platform/kernel/linux-rpi.git
3 years agothermal: Update information in MAINTAINERS
Rafael J. Wysocki [Fri, 1 Oct 2021 17:14:28 +0000 (19:14 +0200)]
thermal: Update information in MAINTAINERS

Because Rui is now going to focus on work that is not related to the
maintenance of the thermal subsystem in the kernel, Rafael will start
to help Daniel with handling the development process as a new member
of the thermal maintainers team.  Rui will continue to review patches
in that area.

The thermal development process flow will change so that the material
from the thermal git tree will be merged into the thermal branch of
the linux-pm.git tree before going into the mainline.

Update the information in MAINTAINERS accordingly.

Signed-off-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Fri, 1 Oct 2021 18:08:07 +0000 (11:08 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull more kvm fixes from Paolo Bonzini:
 "Small x86 fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: selftests: Ensure all migrations are performed when test is affined
  KVM: x86: Swap order of CPUID entry "index" vs. "significant flag" checks
  ptp: Fix ptp_kvm_getcrosststamp issue for x86 ptp_kvm
  x86/kvmclock: Move this_cpu_pvti into kvmclock.h
  selftests: KVM: Don't clobber XMM register when read
  KVM: VMX: Fix a TSX_CTRL_CPUID_CLEAR field mask issue

3 years agoMerge tag 'drm-fixes-2021-10-01' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 1 Oct 2021 17:27:44 +0000 (10:27 -0700)]
Merge tag 'drm-fixes-2021-10-01' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Daniel Vetter:
 "Dave is out on a long w/e, should be back next week.

  Nothing nefarious, just a bunch of driver fixes: amdgpu, i915, tegra,
  and one exynos driver fix"

* tag 'drm-fixes-2021-10-01' of git://anongit.freedesktop.org/drm/drm:
  drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix
  drm/amdgpu: check tiling flags when creating FB on GFX8-
  drm/amd/display: Pass PCI deviceid into DC
  drm/amd/display: initialize backlight_ramping_override to false
  drm/amdgpu: correct initial cp_hqd_quantum for gfx9
  drm/amd/display: Fix Display Flicker on embedded panels
  drm/amdgpu: fix gart.bo pin_count leak
  drm/i915: Remove warning from the rps worker
  drm/i915/request: fix early tracepoints
  drm/i915/guc, docs: Fix pdfdocs build error by removing nested grid
  gpu: host1x: Plug potential memory leak
  gpu/host1x: fence: Make spinlock static
  drm/tegra: uapi: Fix wrong mapping end address in case of disabled IOMMU
  drm/tegra: dc: Remove unused variables
  drm/exynos: Make use of the helper function devm_platform_ioremap_resource()
  drm/i915/gvt: fix the usage of ww lock in gvt scheduler.

3 years agoMerge tag 'iommu-fixes-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 1 Oct 2021 17:14:29 +0000 (10:14 -0700)]
Merge tag 'iommu-fixes-v5.15-rc3' of git://git./linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:

 - Two fixes for the new Apple DART driver to fix a kernel panic and a
   stale data usage issue

 - Intel VT-d fix for how PCI device ids are printed

* tag 'iommu-fixes-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/dart: Clear sid2group entry when a group is freed
  iommu/vt-d: Drop "0x" prefix from PCI bus & device addresses
  iommu/dart: Remove iommu_flush_ops

3 years agoMerge tag 'exynos-drm-fixes-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux...
Daniel Vetter [Fri, 1 Oct 2021 16:14:38 +0000 (18:14 +0200)]
Merge tag 'exynos-drm-fixes-for-v5.15-rc4' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-fixes

One cleanup
- Use devm_platform_ioremap_resource() helper function instead of old
one.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210928074158.2942-1-inki.dae@samsung.com
3 years agoMerge tag 'amd-drm-fixes-5.15-2021-09-29' of https://gitlab.freedesktop.org/agd5f...
Daniel Vetter [Fri, 1 Oct 2021 14:59:21 +0000 (16:59 +0200)]
Merge tag 'amd-drm-fixes-5.15-2021-09-29' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-5.15-2021-09-29:

amdgpu:
- gart pin count fix
- eDP flicker fix
- GFX9 MQD fix
- Display fixes
- Tiling flags fix for pre-GFX9
- SDMA resume fix for S0ix

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210930023013.5207-1-alexander.deucher@amd.com
3 years agoMerge tag 'drm-intel-fixes-2021-09-30' of git://anongit.freedesktop.org/drm/drm-intel...
Daniel Vetter [Fri, 1 Oct 2021 14:47:18 +0000 (16:47 +0200)]
Merge tag 'drm-intel-fixes-2021-09-30' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.15-rc4:
- Fix GVT scheduler ww lock usage
- Fix pdfdocs documentation build
- Fix request early tracepoints
- Fix an invalid warning from rps worker

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87lf3ev44z.fsf@intel.com
3 years agoMerge tag 'net-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 30 Sep 2021 21:28:05 +0000 (14:28 -0700)]
Merge tag 'net-5.15-rc4' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Networking fixes, including fixes from mac80211, netfilter and bpf.

  Current release - regressions:

   - bpf, cgroup: assign cgroup in cgroup_sk_alloc when called from
     interrupt

   - mdio: revert mechanical patches which broke handling of optional
     resources

   - dev_addr_list: prevent address duplication

  Previous releases - regressions:

   - sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
     (NULL deref)

   - Revert "mac80211: do not use low data rates for data frames with no
     ack flag", fixing broadcast transmissions

   - mac80211: fix use-after-free in CCMP/GCMP RX

   - netfilter: include zone id in tuple hash again, minimize collisions

   - netfilter: nf_tables: unlink table before deleting it (race -> UAF)

   - netfilter: log: work around missing softdep backend module

   - mptcp: don't return sockets in foreign netns

   - sched: flower: protect fl_walk() with rcu (race -> UAF)

   - ixgbe: fix NULL pointer dereference in ixgbe_xdp_setup

   - smsc95xx: fix stalled rx after link change

   - enetc: fix the incorrect clearing of IF_MODE bits

   - ipv4: fix rtnexthop len when RTA_FLOW is present

   - dsa: mv88e6xxx: 6161: use correct MAX MTU config method for this
     SKU

   - e100: fix length calculation & buffer overrun in ethtool::get_regs

  Previous releases - always broken:

   - mac80211: fix using stale frag_tail skb pointer in A-MSDU tx

   - mac80211: drop frames from invalid MAC address in ad-hoc mode

   - af_unix: fix races in sk_peer_pid and sk_peer_cred accesses (race
     -> UAF)

   - bpf, x86: Fix bpf mapping of atomic fetch implementation

   - bpf: handle return value of BPF_PROG_TYPE_STRUCT_OPS prog

   - netfilter: ip6_tables: zero-initialize fragment offset

   - mhi: fix error path in mhi_net_newlink

   - af_unix: return errno instead of NULL in unix_create1() when over
     the fs.file-max limit

  Misc:

   - bpf: exempt CAP_BPF from checks against bpf_jit_limit

   - netfilter: conntrack: make max chain length random, prevent
     guessing buckets by attackers

   - netfilter: nf_nat_masquerade: make async masq_inet6_event handling
     generic, defer conntrack walk to work queue (prevent hogging RTNL
     lock)"

* tag 'net-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (77 commits)
  af_unix: fix races in sk_peer_pid and sk_peer_cred accesses
  net: stmmac: fix EEE init issue when paired with EEE capable PHYs
  net: dev_addr_list: handle first address in __hw_addr_add_ex
  net: sched: flower: protect fl_walk() with rcu
  net: introduce and use lock_sock_fast_nested()
  net: phy: bcm7xxx: Fixed indirect MMD operations
  net: hns3: disable firmware compatible features when uninstall PF
  net: hns3: fix always enable rx vlan filter problem after selftest
  net: hns3: PF enable promisc for VF when mac table is overflow
  net: hns3: fix show wrong state when add existing uc mac address
  net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE
  net: hns3: don't rollback when destroy mqprio fail
  net: hns3: remove tc enable checking
  net: hns3: do not allow call hns3_nic_net_open repeatedly
  ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup
  net: bridge: mcast: Associate the seqcount with its protecting lock.
  net: mdio-ipq4019: Fix the error for an optional regs resource
  net: hns3: fix hclge_dbg_dump_tm_pg() stack usage
  net: mdio: mscc-miim: Fix the mdio controller
  af_unix: Return errno instead of NULL in unix_create1().
  ...

3 years agoMerge tag 'gpio-fixes-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 30 Sep 2021 19:11:35 +0000 (12:11 -0700)]
Merge tag 'gpio-fixes-for-v5.15-rc4' of git://git./linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:
 "A single fix for the gpio-pca953x driver and two commits updating the
  MAINTAINERS entries for Mun Yew Tham (GPIO specific) and myself
  (treewide after a change in professional situation).

  Summary:

   - don't ignore I2C errors in gpio-pca953x

   - update MAINTAINERS entries for Mun Yew Tham and myself"

* tag 'gpio-fixes-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  MAINTAINERS: Update Mun Yew Tham as Altera Pio Driver maintainer
  MAINTAINERS: update my email address
  gpio: pca953x: do not ignore i2c errors

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Linus Torvalds [Thu, 30 Sep 2021 19:00:46 +0000 (12:00 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "Not much too exciting here, although two syzkaller bugs that seem to
  have 9 lives may have finally been squashed.

  Several core bugs and a batch of driver bug fixes:

   - Fix compilation problems in qib and hfi1

   - Do not corrupt the joined multicast group state when using
     SEND_ONLY

   - Several CMA bugs, a reference leak for listening and two syzkaller
     crashers

   - Various bug fixes for irdma

   - Fix a Sleeping while atomic bug in usnic

   - Properly sanitize kernel pointers in dmesg

   - Two bugs in the 64b CQE support for hns"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/hns: Add the check of the CQE size of the user space
  RDMA/hns: Fix the size setting error when copying CQE in clean_cq()
  RDMA/hfi1: Fix kernel pointer leak
  RDMA/usnic: Lock VF with mutex instead of spinlock
  RDMA/hns: Work around broken constant propagation in gcc 8
  RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests
  RDMA/cma: Do not change route.addr.src_addr.ss_family
  RDMA/irdma: Report correct WC error when there are MW bind errors
  RDMA/irdma: Report correct WC error when transport retry counter is exceeded
  RDMA/irdma: Validate number of CQ entries on create CQ
  RDMA/irdma: Skip CQP ring during a reset
  MAINTAINERS: Update Broadcom RDMA maintainers
  RDMA/cma: Fix listener leak in rdma_cma_listen_on_all() failure
  IB/cma: Do not send IGMP leaves for sendonly Multicast groups
  IB/qib: Fix clang confusion of NULL pointer comparison

3 years agoaf_unix: fix races in sk_peer_pid and sk_peer_cred accesses
Eric Dumazet [Wed, 29 Sep 2021 22:57:50 +0000 (15:57 -0700)]
af_unix: fix races in sk_peer_pid and sk_peer_cred accesses

Jann Horn reported that SO_PEERCRED and SO_PEERGROUPS implementations
are racy, as af_unix can concurrently change sk_peer_pid and sk_peer_cred.

In order to fix this issue, this patch adds a new spinlock that needs
to be used whenever these fields are read or written.

Jann also pointed out that l2cap_sock_get_peer_pid_cb() is currently
reading sk->sk_peer_pid which makes no sense, as this field
is only possibly set by AF_UNIX sockets.
We will have to clean this in a separate patch.
This could be done by reverting b48596d1dc25 "Bluetooth: L2CAP: Add get_peer_pid callback"
or implementing what was truly expected.

Fixes: 109f6e39fa07 ("af_unix: Allow SO_PEERCRED to work across namespaces.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jann Horn <jannh@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: stmmac: fix EEE init issue when paired with EEE capable PHYs
Wong Vee Khee [Thu, 30 Sep 2021 06:44:36 +0000 (14:44 +0800)]
net: stmmac: fix EEE init issue when paired with EEE capable PHYs

When STMMAC is paired with Energy-Efficient Ethernet(EEE) capable PHY,
and the PHY is advertising EEE by default, we need to enable EEE on the
xPCS side too, instead of having user to manually trigger the enabling
config via ethtool.

Fixed this by adding xpcs_config_eee() call in stmmac_eee_init().

Fixes: 7617af3d1a5e ("net: pcs: Introducing support for DWC xpcs Energy Efficient Ethernet")
Cc: Michael Sit Wei Hong <michael.wei.hong.sit@intel.com>
Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: dev_addr_list: handle first address in __hw_addr_add_ex
Jakub Kicinski [Wed, 29 Sep 2021 15:32:24 +0000 (08:32 -0700)]
net: dev_addr_list: handle first address in __hw_addr_add_ex

struct dev_addr_list is used for device addresses, unicast addresses
and multicast addresses. The first of those needs special handling
of the main address - netdev->dev_addr points directly the data
of the entry and drivers write to it freely, so we can't maintain
it in the rbtree (for now, at least, to be fixed in net-next).

Current work around sprinkles special handling of the first
address on the list throughout the code but it missed the case
where address is being added. First address will not be visible
during subsequent adds.

Syzbot found a warning where unicast addresses are modified
without holding the rtnl lock, tl;dr is that team generates
the same modification multiple times, not necessarily when
right locks are held.

In the repro we have:

  macvlan -> team -> veth

macvlan adds a unicast address to the team. Team then pushes
that address down to its memebers (veths). Next something unrelated
makes team sync member addrs again, and because of the bug
the addr entries get duplicated in the veths. macvlan gets
removed, removes its addr from team which removes only one
of the duplicated addresses from veths. This removal is done
under rtnl. Next syzbot uses iptables to add a multicast addr
to team (which does not hold rtnl lock). Team syncs veth addrs,
but because veths' unicast list still has the duplicate it will
also get sync, even though this update is intended for mc addresses.
Again, uc address updates need rtnl lock, boom.

Reported-by: syzbot+7a2ab2cdc14d134de553@syzkaller.appspotmail.com
Fixes: 406f42fa0d3c ("net-next: When a bond have a massive amount of VLANs with IPv6 addresses, performance of changing link state, attaching a VRF, changing an IPv6 address, etc. go down dramtically.")
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: sched: flower: protect fl_walk() with rcu
Vlad Buslov [Wed, 29 Sep 2021 15:08:49 +0000 (18:08 +0300)]
net: sched: flower: protect fl_walk() with rcu

Patch that refactored fl_walk() to use idr_for_each_entry_continue_ul()
also removed rcu protection of individual filters which causes following
use-after-free when filter is deleted concurrently. Fix fl_walk() to obtain
rcu read lock while iterating and taking the filter reference and temporary
release the lock while calling arg->fn() callback that can sleep.

KASAN trace:

[  352.773640] ==================================================================
[  352.775041] BUG: KASAN: use-after-free in fl_walk+0x159/0x240 [cls_flower]
[  352.776304] Read of size 4 at addr ffff8881c8251480 by task tc/2987

[  352.777862] CPU: 3 PID: 2987 Comm: tc Not tainted 5.15.0-rc2+ #2
[  352.778980] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014
[  352.781022] Call Trace:
[  352.781573]  dump_stack_lvl+0x46/0x5a
[  352.782332]  print_address_description.constprop.0+0x1f/0x140
[  352.783400]  ? fl_walk+0x159/0x240 [cls_flower]
[  352.784292]  ? fl_walk+0x159/0x240 [cls_flower]
[  352.785138]  kasan_report.cold+0x83/0xdf
[  352.785851]  ? fl_walk+0x159/0x240 [cls_flower]
[  352.786587]  kasan_check_range+0x145/0x1a0
[  352.787337]  fl_walk+0x159/0x240 [cls_flower]
[  352.788163]  ? fl_put+0x10/0x10 [cls_flower]
[  352.789007]  ? __mutex_unlock_slowpath.constprop.0+0x220/0x220
[  352.790102]  tcf_chain_dump+0x231/0x450
[  352.790878]  ? tcf_chain_tp_delete_empty+0x170/0x170
[  352.791833]  ? __might_sleep+0x2e/0xc0
[  352.792594]  ? tfilter_notify+0x170/0x170
[  352.793400]  ? __mutex_unlock_slowpath.constprop.0+0x220/0x220
[  352.794477]  tc_dump_tfilter+0x385/0x4b0
[  352.795262]  ? tc_new_tfilter+0x1180/0x1180
[  352.796103]  ? __mod_node_page_state+0x1f/0xc0
[  352.796974]  ? __build_skb_around+0x10e/0x130
[  352.797826]  netlink_dump+0x2c0/0x560
[  352.798563]  ? netlink_getsockopt+0x430/0x430
[  352.799433]  ? __mutex_unlock_slowpath.constprop.0+0x220/0x220
[  352.800542]  __netlink_dump_start+0x356/0x440
[  352.801397]  rtnetlink_rcv_msg+0x3ff/0x550
[  352.802190]  ? tc_new_tfilter+0x1180/0x1180
[  352.802872]  ? rtnl_calcit.isra.0+0x1f0/0x1f0
[  352.803668]  ? tc_new_tfilter+0x1180/0x1180
[  352.804344]  ? _copy_from_iter_nocache+0x800/0x800
[  352.805202]  ? kasan_set_track+0x1c/0x30
[  352.805900]  netlink_rcv_skb+0xc6/0x1f0
[  352.806587]  ? rht_deferred_worker+0x6b0/0x6b0
[  352.807455]  ? rtnl_calcit.isra.0+0x1f0/0x1f0
[  352.808324]  ? netlink_ack+0x4d0/0x4d0
[  352.809086]  ? netlink_deliver_tap+0x62/0x3d0
[  352.809951]  netlink_unicast+0x353/0x480
[  352.810744]  ? netlink_attachskb+0x430/0x430
[  352.811586]  ? __alloc_skb+0xd7/0x200
[  352.812349]  netlink_sendmsg+0x396/0x680
[  352.813132]  ? netlink_unicast+0x480/0x480
[  352.813952]  ? __import_iovec+0x192/0x210
[  352.814759]  ? netlink_unicast+0x480/0x480
[  352.815580]  sock_sendmsg+0x6c/0x80
[  352.816299]  ____sys_sendmsg+0x3a5/0x3c0
[  352.817096]  ? kernel_sendmsg+0x30/0x30
[  352.817873]  ? __ia32_sys_recvmmsg+0x150/0x150
[  352.818753]  ___sys_sendmsg+0xd8/0x140
[  352.819518]  ? sendmsg_copy_msghdr+0x110/0x110
[  352.820402]  ? ___sys_recvmsg+0xf4/0x1a0
[  352.821110]  ? __copy_msghdr_from_user+0x260/0x260
[  352.821934]  ? _raw_spin_lock+0x81/0xd0
[  352.822680]  ? __handle_mm_fault+0xef3/0x1b20
[  352.823549]  ? rb_insert_color+0x2a/0x270
[  352.824373]  ? copy_page_range+0x16b0/0x16b0
[  352.825209]  ? perf_event_update_userpage+0x2d0/0x2d0
[  352.826190]  ? __fget_light+0xd9/0xf0
[  352.826941]  __sys_sendmsg+0xb3/0x130
[  352.827613]  ? __sys_sendmsg_sock+0x20/0x20
[  352.828377]  ? do_user_addr_fault+0x2c5/0x8a0
[  352.829184]  ? fpregs_assert_state_consistent+0x52/0x60
[  352.830001]  ? exit_to_user_mode_prepare+0x32/0x160
[  352.830845]  do_syscall_64+0x35/0x80
[  352.831445]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[  352.832331] RIP: 0033:0x7f7bee973c17
[  352.833078] Code: 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
[  352.836202] RSP: 002b:00007ffcbb368e28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  352.837524] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7bee973c17
[  352.838715] RDX: 0000000000000000 RSI: 00007ffcbb368e50 RDI: 0000000000000003
[  352.839838] RBP: 00007ffcbb36d090 R08: 00000000cea96d79 R09: 00007f7beea34a40
[  352.841021] R10: 00000000004059bb R11: 0000000000000246 R12: 000000000046563f
[  352.842208] R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffcbb36d088

[  352.843784] Allocated by task 2960:
[  352.844451]  kasan_save_stack+0x1b/0x40
[  352.845173]  __kasan_kmalloc+0x7c/0x90
[  352.845873]  fl_change+0x282/0x22db [cls_flower]
[  352.846696]  tc_new_tfilter+0x6cf/0x1180
[  352.847493]  rtnetlink_rcv_msg+0x471/0x550
[  352.848323]  netlink_rcv_skb+0xc6/0x1f0
[  352.849097]  netlink_unicast+0x353/0x480
[  352.849886]  netlink_sendmsg+0x396/0x680
[  352.850678]  sock_sendmsg+0x6c/0x80
[  352.851398]  ____sys_sendmsg+0x3a5/0x3c0
[  352.852202]  ___sys_sendmsg+0xd8/0x140
[  352.852967]  __sys_sendmsg+0xb3/0x130
[  352.853718]  do_syscall_64+0x35/0x80
[  352.854457]  entry_SYSCALL_64_after_hwframe+0x44/0xae

[  352.855830] Freed by task 7:
[  352.856421]  kasan_save_stack+0x1b/0x40
[  352.857139]  kasan_set_track+0x1c/0x30
[  352.857854]  kasan_set_free_info+0x20/0x30
[  352.858609]  __kasan_slab_free+0xed/0x130
[  352.859348]  kfree+0xa7/0x3c0
[  352.859951]  process_one_work+0x44d/0x780
[  352.860685]  worker_thread+0x2e2/0x7e0
[  352.861390]  kthread+0x1f4/0x220
[  352.862022]  ret_from_fork+0x1f/0x30

[  352.862955] Last potentially related work creation:
[  352.863758]  kasan_save_stack+0x1b/0x40
[  352.864378]  kasan_record_aux_stack+0xab/0xc0
[  352.865028]  insert_work+0x30/0x160
[  352.865617]  __queue_work+0x351/0x670
[  352.866261]  rcu_work_rcufn+0x30/0x40
[  352.866917]  rcu_core+0x3b2/0xdb0
[  352.867561]  __do_softirq+0xf6/0x386

[  352.868708] Second to last potentially related work creation:
[  352.869779]  kasan_save_stack+0x1b/0x40
[  352.870560]  kasan_record_aux_stack+0xab/0xc0
[  352.871426]  call_rcu+0x5f/0x5c0
[  352.872108]  queue_rcu_work+0x44/0x50
[  352.872855]  __fl_put+0x17c/0x240 [cls_flower]
[  352.873733]  fl_delete+0xc7/0x100 [cls_flower]
[  352.874607]  tc_del_tfilter+0x510/0xb30
[  352.886085]  rtnetlink_rcv_msg+0x471/0x550
[  352.886875]  netlink_rcv_skb+0xc6/0x1f0
[  352.887636]  netlink_unicast+0x353/0x480
[  352.888285]  netlink_sendmsg+0x396/0x680
[  352.888942]  sock_sendmsg+0x6c/0x80
[  352.889583]  ____sys_sendmsg+0x3a5/0x3c0
[  352.890311]  ___sys_sendmsg+0xd8/0x140
[  352.891019]  __sys_sendmsg+0xb3/0x130
[  352.891716]  do_syscall_64+0x35/0x80
[  352.892395]  entry_SYSCALL_64_after_hwframe+0x44/0xae

[  352.893666] The buggy address belongs to the object at ffff8881c8251000
                which belongs to the cache kmalloc-2k of size 2048
[  352.895696] The buggy address is located 1152 bytes inside of
                2048-byte region [ffff8881c8251000ffff8881c8251800)
[  352.897640] The buggy address belongs to the page:
[  352.898492] page:00000000213bac35 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1c8250
[  352.900110] head:00000000213bac35 order:3 compound_mapcount:0 compound_pincount:0
[  352.901541] flags: 0x2ffff800010200(slab|head|node=0|zone=2|lastcpupid=0x1ffff)
[  352.902908] raw: 002ffff800010200 0000000000000000 dead000000000122 ffff888100042f00
[  352.904391] raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
[  352.905861] page dumped because: kasan: bad access detected

[  352.907323] Memory state around the buggy address:
[  352.908218]  ffff8881c8251380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  352.909471]  ffff8881c8251400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  352.910735] >ffff8881c8251480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  352.912012]                    ^
[  352.912642]  ffff8881c8251500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  352.913919]  ffff8881c8251580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[  352.915185] ==================================================================

Fixes: d39d714969cd ("idr: introduce idr_for_each_entry_continue_ul()")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Acked-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: introduce and use lock_sock_fast_nested()
Paolo Abeni [Wed, 29 Sep 2021 09:59:17 +0000 (11:59 +0200)]
net: introduce and use lock_sock_fast_nested()

Syzkaller reported a false positive deadlock involving
the nl socket lock and the subflow socket lock:

MPTCP: kernel_bind error, err=-98
============================================
WARNING: possible recursive locking detected
5.15.0-rc1-syzkaller #0 Not tainted
--------------------------------------------
syz-executor998/6520 is trying to acquire lock:
ffff8880795718a0 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x267/0x7b0 net/mptcp/protocol.c:2738

but task is already holding lock:
ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1612 [inline]
ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x23/0x7b0 net/mptcp/protocol.c:2720

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(k-sk_lock-AF_INET);
  lock(k-sk_lock-AF_INET);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

3 locks held by syz-executor998/6520:
 #0: ffffffff8d176c50 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
 #1: ffffffff8d176d08 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
 #1: ffffffff8d176d08 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x3e0/0x580 net/netlink/genetlink.c:790
 #2: ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1612 [inline]
 #2: ffff8880787c8c60 (k-sk_lock-AF_INET){+.+.}-{0:0}, at: mptcp_close+0x23/0x7b0 net/mptcp/protocol.c:2720

stack backtrace:
CPU: 1 PID: 6520 Comm: syz-executor998 Not tainted 5.15.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2944 [inline]
 check_deadlock kernel/locking/lockdep.c:2987 [inline]
 validate_chain kernel/locking/lockdep.c:3776 [inline]
 __lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5015
 lock_acquire kernel/locking/lockdep.c:5625 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590
 lock_sock_fast+0x36/0x100 net/core/sock.c:3229
 mptcp_close+0x267/0x7b0 net/mptcp/protocol.c:2738
 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
 __sock_release net/socket.c:649 [inline]
 sock_release+0x87/0x1b0 net/socket.c:677
 mptcp_pm_nl_create_listen_socket+0x238/0x2c0 net/mptcp/pm_netlink.c:900
 mptcp_nl_cmd_add_addr+0x359/0x930 net/mptcp/pm_netlink.c:1170
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:731
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:792
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340
 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:724
 sock_no_sendpage+0x101/0x150 net/core/sock.c:2980
 kernel_sendpage.part.0+0x1a0/0x340 net/socket.c:3504
 kernel_sendpage net/socket.c:3501 [inline]
 sock_sendpage+0xe5/0x140 net/socket.c:1003
 pipe_to_sendpage+0x2ad/0x380 fs/splice.c:364
 splice_from_pipe_feed fs/splice.c:418 [inline]
 __splice_from_pipe+0x43e/0x8a0 fs/splice.c:562
 splice_from_pipe fs/splice.c:597 [inline]
 generic_splice_sendpage+0xd4/0x140 fs/splice.c:746
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x110/0x180 fs/splice.c:936
 splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
 do_splice_direct+0x1b3/0x280 fs/splice.c:979
 do_sendfile+0xae9/0x1240 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1314 [inline]
 __se_sys_sendfile64 fs/read_write.c:1300 [inline]
 __x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1300
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f215cb69969
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc96bb3868 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f215cbad072 RCX: 00007f215cb69969
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 0000000000000000 R08: 00007ffc96bb3a08 R09: 00007ffc96bb3a08
R10: 0000000100000002 R11: 0000000000000246 R12: 00007ffc96bb387c
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000

the problem originates from uncorrect lock annotation in the mptcp
code and is only visible since commit 2dcb96bacce3 ("net: core: Correct
the sock::sk_lock.owned lockdep annotations"), but is present since
the port-based endpoint support initial implementation.

This patch addresses the issue introducing a nested variant of
lock_sock_fast() and using it in the relevant code path.

Fixes: 1729cf186d8a ("mptcp: create the listening socket for new port")
Fixes: 2dcb96bacce3 ("net: core: Correct the sock::sk_lock.owned lockdep annotations")
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Reported-and-tested-by: syzbot+1dd53f7a89b299d59eaf@syzkaller.appspotmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoKVM: selftests: Ensure all migrations are performed when test is affined
Sean Christopherson [Wed, 29 Sep 2021 23:41:12 +0000 (16:41 -0700)]
KVM: selftests: Ensure all migrations are performed when test is affined

Rework the CPU selection in the migration worker to ensure the specified
number of migrations are performed when the test iteslf is affined to a
subset of CPUs.  The existing logic skips iterations if the target CPU is
not in the original set of possible CPUs, which causes the test to fail
if too many iterations are skipped.

  ==== Test Assertion Failure ====
  rseq_test.c:228: i > (NR_TASK_MIGRATIONS / 2)
  pid=10127 tid=10127 errno=4 - Interrupted system call
     1  0x00000000004018e5: main at rseq_test.c:227
     2  0x00007fcc8fc66bf6: ?? ??:0
     3  0x0000000000401959: _start at ??:?
  Only performed 4 KVM_RUNs, task stalled too much?

Calculate the min/max possible CPUs as a cheap "best effort" to avoid
high runtimes when the test is affined to a small percentage of CPUs.
Alternatively, a list or xarray of the possible CPUs could be used, but
even in a horrendously inefficient setup, such optimizations are not
needed because the runtime is completely dominated by the cost of
migrating the task, and the absolute runtime is well under a minute in
even truly absurd setups, e.g. running on a subset of vCPUs in a VM that
is heavily overcommited (16 vCPUs per pCPU).

Fixes: 61e52f1630f5 ("KVM: selftests: Add a test for KVM_RUN+rseq to detect task migration bugs")
Reported-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210929234112.1862848-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoKVM: x86: Swap order of CPUID entry "index" vs. "significant flag" checks
Sean Christopherson [Wed, 29 Sep 2021 22:24:25 +0000 (15:24 -0700)]
KVM: x86: Swap order of CPUID entry "index" vs. "significant flag" checks

Check whether a CPUID entry's index is significant before checking for a
matching index to hack-a-fix an undefined behavior bug due to consuming
uninitialized data.  RESET/INIT emulation uses kvm_cpuid() to retrieve
CPUID.0x1, which does _not_ have a significant index, and fails to
initialize the dummy variable that doubles as EBX/ECX/EDX output _and_
ECX, a.k.a. index, input.

Practically speaking, it's _extremely_  unlikely any compiler will yield
code that causes problems, as the compiler would need to inline the
kvm_cpuid() call to detect the uninitialized data, and intentionally hose
the kernel, e.g. insert ud2, instead of simply ignoring the result of
the index comparison.

Although the sketchy "dummy" pattern was introduced in SVM by commit
66f7b72e1171 ("KVM: x86: Make register state after reset conform to
specification"), it wasn't actually broken until commit 7ff6c0350315
("KVM: x86: Remove stateful CPUID handling") arbitrarily swapped the
order of operations such that "index" was checked before the significant
flag.

Avoid consuming uninitialized data by reverting to checking the flag
before the index purely so that the fix can be easily backported; the
offending RESET/INIT code has been refactored, moved, and consolidated
from vendor code to common x86 since the bug was introduced.  A future
patch will directly address the bad RESET/INIT behavior.

The undefined behavior was detected by syzbot + KernelMemorySanitizer.

  BUG: KMSAN: uninit-value in cpuid_entry2_find arch/x86/kvm/cpuid.c:68
  BUG: KMSAN: uninit-value in kvm_find_cpuid_entry arch/x86/kvm/cpuid.c:1103
  BUG: KMSAN: uninit-value in kvm_cpuid+0x456/0x28f0 arch/x86/kvm/cpuid.c:1183
   cpuid_entry2_find arch/x86/kvm/cpuid.c:68 [inline]
   kvm_find_cpuid_entry arch/x86/kvm/cpuid.c:1103 [inline]
   kvm_cpuid+0x456/0x28f0 arch/x86/kvm/cpuid.c:1183
   kvm_vcpu_reset+0x13fb/0x1c20 arch/x86/kvm/x86.c:10885
   kvm_apic_accept_events+0x58f/0x8c0 arch/x86/kvm/lapic.c:2923
   vcpu_enter_guest+0xfd2/0x6d80 arch/x86/kvm/x86.c:9534
   vcpu_run+0x7f5/0x18d0 arch/x86/kvm/x86.c:9788
   kvm_arch_vcpu_ioctl_run+0x245b/0x2d10 arch/x86/kvm/x86.c:10020

  Local variable ----dummy@kvm_vcpu_reset created at:
   kvm_vcpu_reset+0x1fb/0x1c20 arch/x86/kvm/x86.c:10812
   kvm_apic_accept_events+0x58f/0x8c0 arch/x86/kvm/lapic.c:2923

Reported-by: syzbot+f3985126b746b3d59c9d@syzkaller.appspotmail.com
Reported-by: Alexander Potapenko <glider@google.com>
Fixes: 2a24be79b6b7 ("KVM: VMX: Set EDX at INIT with CPUID.0x1, Family-Model-Stepping")
Fixes: 7ff6c0350315 ("KVM: x86: Remove stateful CPUID handling")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Message-Id: <20210929222426.1855730-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoptp: Fix ptp_kvm_getcrosststamp issue for x86 ptp_kvm
Zelin Deng [Wed, 29 Sep 2021 05:13:49 +0000 (13:13 +0800)]
ptp: Fix ptp_kvm_getcrosststamp issue for x86 ptp_kvm

hv_clock is preallocated to have only HVC_BOOT_ARRAY_SIZE (64) elements;
if the PTP_SYS_OFFSET_PRECISE ioctl is executed on vCPUs whose index is
64 of higher, retrieving the struct pvclock_vcpu_time_info pointer with
"src = &hv_clock[cpu].pvti" will result in an out-of-bounds access and
a wild pointer.  Change it to "this_cpu_pvti()" which is guaranteed to
be valid.

Fixes: 95a3d4454bb1 ("Switch kvmclock data to a PER_CPU variable")
Signed-off-by: Zelin Deng <zelin.deng@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Message-Id: <1632892429-101194-3-git-send-email-zelin.deng@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agox86/kvmclock: Move this_cpu_pvti into kvmclock.h
Zelin Deng [Wed, 29 Sep 2021 05:13:48 +0000 (13:13 +0800)]
x86/kvmclock: Move this_cpu_pvti into kvmclock.h

There're other modules might use hv_clock_per_cpu variable like ptp_kvm,
so move it into kvmclock.h and export the symbol to make it visiable to
other modules.

Signed-off-by: Zelin Deng <zelin.deng@linux.alibaba.com>
Cc: <stable@vger.kernel.org>
Message-Id: <1632892429-101194-2-git-send-email-zelin.deng@linux.alibaba.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoMAINTAINERS: Update Mun Yew Tham as Altera Pio Driver maintainer
Mun Yew Tham [Wed, 29 Sep 2021 00:49:11 +0000 (08:49 +0800)]
MAINTAINERS: Update Mun Yew Tham as Altera Pio Driver maintainer

Update Altera Pio Driver maintainer's email from <joyce.ooi@intel.com> to <mun.yew.tham@intel.com>

Signed-off-by: Mun Yew Tham <mun.yew.tham@intel.com>
Acked-by: Joyce Ooi <joyce.ooi@intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
3 years agoMAINTAINERS: update my email address
Bartosz Golaszewski [Mon, 20 Sep 2021 07:18:37 +0000 (09:18 +0200)]
MAINTAINERS: update my email address

My professional situation changes soon. Update my email address.

Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
3 years agogpio: pca953x: do not ignore i2c errors
Andrey Gusakov [Thu, 23 Sep 2021 17:22:16 +0000 (20:22 +0300)]
gpio: pca953x: do not ignore i2c errors

Per gpio_chip interface, error shall be proparated to the caller.

Attempt to silent diagnostics by returning zero (as written in the
comment) is plain wrong, because the zero return can be interpreted by
the caller as the gpio value.

Cc: stable@vger.kernel.org
Signed-off-by: Andrey Gusakov <andrey.gusakov@cogentembedded.com>
Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
3 years agoMerge tag 'sound-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Wed, 29 Sep 2021 14:48:00 +0000 (07:48 -0700)]
Merge tag 'sound-5.15-rc4' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This became a slightly large collection of changes, partly because
  I've been off in the last weeks. Most of changes are small and
  scattered while a bit big change is found in HD-audio Realtek codec
  driver; it's a very device-specific fix that has been long wanted, so
  I decided to pick up although it's in the middle RC.

  Some highlights:

   - A new guard ioctl for ALSA rawmidi API to avoid the misuse of the
     new timestamp framing mode; it's for a regression fix

   - HD-audio: a revert of the 5.15 change that might work badly, new
     quirks for Lenovo Legion & co, a follow-up fix for CS8409

   - ASoC: lots of SOF-related fixes, fsl component fixes, corrections
     of mediatek drivers

   - USB-audio: fix for the PM resume

   - FireWire: oxfw and motu fixes"

* tag 'sound-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (25 commits)
  ALSA: pcsp: Make hrtimer forwarding more robust
  ALSA: rawmidi: introduce SNDRV_RAWMIDI_IOCTL_USER_PVERSION
  ALSA: firewire-motu: fix truncated bytes in message tracepoints
  ASoC: SOF: trace: Omit error print when waking up trace sleepers
  ASoC: mediatek: mt8195: remove wrong fixup assignment on HDMITX
  ASoC: SOF: loader: Re-phrase the missing firmware error to avoid duplication
  ASoC: SOF: loader: release_firmware() on load failure to avoid batching
  ALSA: hda/cs8409: Setup Dolphin Headset Mic as Phantom Jack
  ALSA: pcxhr: "fix" PCXHR_REG_TO_PORT definition
  ASoC: SOF: imx: imx8m: Bar index is only valid for IRAM and SRAM types
  ASoC: SOF: imx: imx8: Bar index is only valid for IRAM and SRAM types
  ASoC: SOF: Fix DSP oops stack dump output contents
  ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops.
  ALSA: usb-audio: Unify mixer resume and reset_resume procedure
  Revert "ALSA: hda: Drop workaround for a hang at shutdown again"
  ALSA: oxfw: fix transmission method for Loud models based on OXFW971
  ASoC: mediatek: common: handle NULL case in suspend/resume function
  ASoC: fsl_xcvr: register platform component before registering cpu dai
  ASoC: fsl_spdif: register platform component before registering cpu dai
  ASoC: fsl_micfil: register platform component before registering cpu dai
  ...

3 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Wed, 29 Sep 2021 14:37:46 +0000 (07:37 -0700)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This contains fixes for a resource leak in ccp as well as stack
  corruption in x86/sm4"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: x86/sm4 - Fix frame pointer stack corruption
  crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd()

3 years agonet: phy: bcm7xxx: Fixed indirect MMD operations
Florian Fainelli [Tue, 28 Sep 2021 20:32:33 +0000 (13:32 -0700)]
net: phy: bcm7xxx: Fixed indirect MMD operations

When EEE support was added to the 28nm EPHY it was assumed that it would
be able to support the standard clause 45 over clause 22 register access
method. It turns out that the PHY does not support that, which is the
very reason for using the indirect shadow mode 2 bank 3 access method.

Implement {read,write}_mmd to allow the standard PHY library routines
pertaining to EEE querying and configuration to work correctly on these
PHYs. This forces us to implement a __phy_set_clr_bits() function that
does not grab the MDIO bus lock since the PHY driver's {read,write}_mmd
functions are always called with that lock held.

Fixes: 83ee102a6998 ("net: phy: bcm7xxx: add support for 28nm EPHY")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch 'hns3-fixes'
David S. Miller [Wed, 29 Sep 2021 10:03:54 +0000 (11:03 +0100)]
Merge branch 'hns3-fixes'

Guangbin Huang says:

====================
net: hns3: add some fixes for -net

This series adds some fixes for the HNS3 ethernet driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: disable firmware compatible features when uninstall PF
Guangbin Huang [Wed, 29 Sep 2021 09:35:56 +0000 (17:35 +0800)]
net: hns3: disable firmware compatible features when uninstall PF

Currently, the firmware compatible features are enabled in PF driver
initialization process, but they are not disabled in PF driver
deinitialization process and firmware keeps these features in enabled
status.

In this case, if load an old PF driver (for example, in VM) which not
support the firmware compatible features, firmware will still send mailbox
message to PF when link status changed and PF will print
"un-supported mailbox message, code = 201".

To fix this problem, disable these firmware compatible features in PF
driver deinitialization process.

Fixes: ed8fb4b262ae ("net: hns3: add link change event report")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: fix always enable rx vlan filter problem after selftest
Guangbin Huang [Wed, 29 Sep 2021 09:35:55 +0000 (17:35 +0800)]
net: hns3: fix always enable rx vlan filter problem after selftest

Currently, the rx vlan filter will always be disabled before selftest and
be enabled after selftest as the rx vlan filter feature is fixed on in
old device earlier than V3.

However, this feature is not fixed in some new devices and it can be
disabled by user. In this case, it is wrong if rx vlan filter is enabled
after selftest. So fix it.

Fixes: bcc26e8dc432 ("net: hns3: remove unused code in hns3_self_test()")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: PF enable promisc for VF when mac table is overflow
Guangbin Huang [Wed, 29 Sep 2021 09:35:54 +0000 (17:35 +0800)]
net: hns3: PF enable promisc for VF when mac table is overflow

If unicast mac address table is full, and user add a new mac address, the
unicast promisc needs to be enabled for the new unicast mac address can be
used. So does the multicast promisc.

Now this feature has been implemented for PF, and VF should be implemented
too. When the mac table of VF is overflow, PF will enable promisc for this
VF.

Fixes: 1e6e76101fd9 ("net: hns3: configure promisc mode for VF asynchronously")
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: fix show wrong state when add existing uc mac address
Jian Shen [Wed, 29 Sep 2021 09:35:53 +0000 (17:35 +0800)]
net: hns3: fix show wrong state when add existing uc mac address

Currently, if function adds an existing unicast mac address, eventhough
driver will not add this address into hardware, but it will return 0 in
function hclge_add_uc_addr_common(). It will cause the state of this
unicast mac address is ACTIVE in driver, but it should be in TO-ADD state.

To fix this problem, function hclge_add_uc_addr_common() returns -EEXIST
if mac address is existing, and delete two error log to avoid printing
them all the time after this modification.

Fixes: 72110b567479 ("net: hns3: return 0 and print warning when hit duplicate MAC")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE
Jian Shen [Wed, 29 Sep 2021 09:35:52 +0000 (17:35 +0800)]
net: hns3: fix mixed flag HCLGE_FLAG_MQPRIO_ENABLE and HCLGE_FLAG_DCB_ENABLE

HCLGE_FLAG_MQPRIO_ENABLE is supposed to set when enable
multiple TCs with tc mqprio, and HCLGE_FLAG_DCB_ENABLE is
supposed to set when enable multiple TCs with ets. But
the driver mixed the flags when updating the tm configuration.

Furtherly, PFC should be available when HCLGE_FLAG_MQPRIO_ENABLE
too, so remove the unnecessary limitation.

Fixes: 5a5c90917467 ("net: hns3: add support for tc mqprio offload")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: don't rollback when destroy mqprio fail
Jian Shen [Wed, 29 Sep 2021 09:35:51 +0000 (17:35 +0800)]
net: hns3: don't rollback when destroy mqprio fail

For destroy mqprio is irreversible in stack, so it's unnecessary
to rollback the tc configuration when destroy mqprio failed.
Otherwise, it may cause the configuration being inconsistent
between driver and netstack.

As the failure is usually caused by reset, and the driver will
restore the configuration after reset, so it can keep the
configuration being consistent between driver and hardware.

Fixes: 5a5c90917467 ("net: hns3: add support for tc mqprio offload")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: remove tc enable checking
Jian Shen [Wed, 29 Sep 2021 09:35:50 +0000 (17:35 +0800)]
net: hns3: remove tc enable checking

Currently, in function hns3_nic_set_real_num_queue(), the
driver doesn't report the queue count and offset for disabled
tc. If user enables multiple TCs, but only maps user
priorities to partial of them, it may cause the queue range
of the unmapped TC being displayed abnormally.

Fix it by removing the tc enable checking, ensure the queue
count is not zero.

With this change, the tc_en is useless now, so remove it.

Fixes: a75a8efa00c5 ("net: hns3: Fix tc setup when netdev is first up")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: hns3: do not allow call hns3_nic_net_open repeatedly
Jian Shen [Wed, 29 Sep 2021 09:35:49 +0000 (17:35 +0800)]
net: hns3: do not allow call hns3_nic_net_open repeatedly

hns3_nic_net_open() is not allowed to called repeatly, but there
is no checking for this. When doing device reset and setup tc
concurrently, there is a small oppotunity to call hns3_nic_net_open
repeatedly, and cause kernel bug by calling napi_enable twice.

The calltrace information is like below:
[ 3078.222780] ------------[ cut here ]------------
[ 3078.230255] kernel BUG at net/core/dev.c:6991!
[ 3078.236224] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[ 3078.243431] Modules linked in: hns3 hclgevf hclge hnae3 vfio_iommu_type1 vfio_pci vfio_virqfd vfio pv680_mii(O)
[ 3078.258880] CPU: 0 PID: 295 Comm: kworker/u8:5 Tainted: G           O      5.14.0-rc4+ #1
[ 3078.269102] Hardware name:  , BIOS KpxxxFPGA 1P B600 V181 08/12/2021
[ 3078.276801] Workqueue: hclge hclge_service_task [hclge]
[ 3078.288774] pstate: 60400009 (nZCv daif +PAN -UAO -TCO BTYPE=--)
[ 3078.296168] pc : napi_enable+0x80/0x84
tc qdisc sho[w  3d0e7v8 .e3t0h218 79] lr : hns3_nic_net_open+0x138/0x510 [hns3]

[ 3078.314771] sp : ffff8000108abb20
[ 3078.319099] x29: ffff8000108abb20 x28: 0000000000000000 x27: ffff0820a8490300
[ 3078.329121] x26: 0000000000000001 x25: ffff08209cfc6200 x24: 0000000000000000
[ 3078.339044] x23: ffff0820a8490300 x22: ffff08209cd76000 x21: ffff0820abfe3880
[ 3078.349018] x20: 0000000000000000 x19: ffff08209cd76900 x18: 0000000000000000
[ 3078.358620] x17: 0000000000000000 x16: ffffc816e1727a50 x15: 0000ffff8f4ff930
[ 3078.368895] x14: 0000000000000000 x13: 0000000000000000 x12: 0000259e9dbeb6b4
[ 3078.377987] x11: 0096a8f7e764eb40 x10: 634615ad28d3eab5 x9 : ffffc816ad8885b8
[ 3078.387091] x8 : ffff08209cfc6fb8 x7 : ffff0820ac0da058 x6 : ffff0820a8490344
[ 3078.396356] x5 : 0000000000000140 x4 : 0000000000000003 x3 : ffff08209cd76938
[ 3078.405365] x2 : 0000000000000000 x1 : 0000000000000010 x0 : ffff0820abfe38a0
[ 3078.414657] Call trace:
[ 3078.418517]  napi_enable+0x80/0x84
[ 3078.424626]  hns3_reset_notify_up_enet+0x78/0xd0 [hns3]
[ 3078.433469]  hns3_reset_notify+0x64/0x80 [hns3]
[ 3078.441430]  hclge_notify_client+0x68/0xb0 [hclge]
[ 3078.450511]  hclge_reset_rebuild+0x524/0x884 [hclge]
[ 3078.458879]  hclge_reset_service_task+0x3c4/0x680 [hclge]
[ 3078.467470]  hclge_service_task+0xb0/0xb54 [hclge]
[ 3078.475675]  process_one_work+0x1dc/0x48c
[ 3078.481888]  worker_thread+0x15c/0x464
[ 3078.487104]  kthread+0x160/0x170
[ 3078.492479]  ret_from_fork+0x10/0x18
[ 3078.498785] Code: c8027c81 35ffffa2 d50323bf d65f03c0 (d4210000)
[ 3078.506889] ---[ end trace 8ebe0340a1b0fb44 ]---

Once hns3_nic_net_open() is excute success, the flag
HNS3_NIC_STATE_DOWN will be cleared. So add checking for this
flag, directly return when HNS3_NIC_STATE_DOWN is no set.

Fixes: e888402789b9 ("net: hns3: call hns3_nic_net_open() while doing HNAE3_UP_CLIENT")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup
Feng Zhou [Tue, 28 Sep 2021 22:23:59 +0000 (15:23 -0700)]
ixgbe: Fix NULL pointer dereference in ixgbe_xdp_setup

The ixgbe driver currently generates a NULL pointer dereference with
some machine (online cpus < 63). This is due to the fact that the
maximum value of num_xdp_queues is nr_cpu_ids. Code is in
"ixgbe_set_rss_queues"".

Here's how the problem repeats itself:
Some machine (online cpus < 63), And user set num_queues to 63 through
ethtool. Code is in the "ixgbe_set_channels",
adapter->ring_feature[RING_F_FDIR].limit = count;

It becomes 63.

When user use xdp, "ixgbe_set_rss_queues" will set queues num.
adapter->num_rx_queues = rss_i;
adapter->num_tx_queues = rss_i;
adapter->num_xdp_queues = ixgbe_xdp_queues(adapter);

And rss_i's value is from
f = &adapter->ring_feature[RING_F_FDIR];
rss_i = f->indices = f->limit;

So "num_rx_queues" > "num_xdp_queues", when run to "ixgbe_xdp_setup",
for (i = 0; i < adapter->num_rx_queues; i++)
if (adapter->xdp_ring[i]->xsk_umem)

It leads to panic.

Call trace:
[exception RIP: ixgbe_xdp+368]
RIP: ffffffffc02a76a0  RSP: ffff9fe16202f8d0  RFLAGS: 00010297
RAX: 0000000000000000  RBX: 0000000000000020  RCX: 0000000000000000
RDX: 0000000000000000  RSI: 000000000000001c  RDI: ffffffffa94ead90
RBP: ffff92f8f24c0c18   R8: 0000000000000000   R9: 0000000000000000
R10: ffff9fe16202f830  R11: 0000000000000000  R12: ffff92f8f24c0000
R13: ffff9fe16202fc01  R14: 000000000000000a  R15: ffffffffc02a7530
ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 7 [ffff9fe16202f8f0] dev_xdp_install at ffffffffa89fbbcc
 8 [ffff9fe16202f920] dev_change_xdp_fd at ffffffffa8a08808
 9 [ffff9fe16202f960] do_setlink at ffffffffa8a20235
10 [ffff9fe16202fa88] rtnl_setlink at ffffffffa8a20384
11 [ffff9fe16202fc78] rtnetlink_rcv_msg at ffffffffa8a1a8dd
12 [ffff9fe16202fcf0] netlink_rcv_skb at ffffffffa8a717eb
13 [ffff9fe16202fd40] netlink_unicast at ffffffffa8a70f88
14 [ffff9fe16202fd80] netlink_sendmsg at ffffffffa8a71319
15 [ffff9fe16202fdf0] sock_sendmsg at ffffffffa89df290
16 [ffff9fe16202fe08] __sys_sendto at ffffffffa89e19c8
17 [ffff9fe16202ff30] __x64_sys_sendto at ffffffffa89e1a64
18 [ffff9fe16202ff38] do_syscall_64 at ffffffffa84042b9
19 [ffff9fe16202ff50] entry_SYSCALL_64_after_hwframe at ffffffffa8c0008c

So I fix ixgbe_max_channels so that it will not allow a setting of queues
to be higher than the num_online_cpus(). And when run to ixgbe_xdp_setup,
take the smaller value of num_rx_queues and num_xdp_queues.

Fixes: 4a9b32f30f80 ("ixgbe: fix potential RX buffer starvation for AF_XDP")
Signed-off-by: Feng Zhou <zhoufeng.zf@bytedance.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: bridge: mcast: Associate the seqcount with its protecting lock.
Thomas Gleixner [Tue, 28 Sep 2021 14:10:49 +0000 (16:10 +0200)]
net: bridge: mcast: Associate the seqcount with its protecting lock.

The sequence count bridge_mcast_querier::seq is protected by
net_bridge::multicast_lock but seqcount_init() does not associate the
seqcount with the lock. This leads to a warning on PREEMPT_RT because
preemption is still enabled.

Let seqcount_init() associate the seqcount with lock that protects the
write section. Remove lockdep_assert_held_once() because lockdep already checks
whether the associated lock is held.

Fixes: 67b746f94ff39 ("net: bridge: mcast: make sure querier port/address updates are consistent")
Reported-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Mike Galbraith <efault@gmx.de>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Link: https://lore.kernel.org/r/20210928141049.593833-1-bigeasy@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mdio-ipq4019: Fix the error for an optional regs resource
Cai Huoqing [Tue, 28 Sep 2021 13:48:49 +0000 (21:48 +0800)]
net: mdio-ipq4019: Fix the error for an optional regs resource

The second resource is optional which is only provided on the chipset
IPQ5018. But the blamed commit ignores that and if the resource is
not there it just fails.

the resource is used like this,
if (priv->eth_ldo_rdy) {
val = readl(priv->eth_ldo_rdy);
val |= BIT(0);
writel(val, priv->eth_ldo_rdy);
fsleep(IPQ_PHY_SET_DELAY_US);
}

This patch reverts that to still allow the second resource to be optional
because other SoC have the some MDIO controller and doesn't need to
second resource.

Fixes: fa14d03e014a ("net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()")
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210928134849.2092-1-caihuoqing@baidu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge tag 'pinctrl-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Tue, 28 Sep 2021 23:10:42 +0000 (16:10 -0700)]
Merge tag 'pinctrl-v5.15-2' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "Some few pin control fixes for the v5.15 kernel cycle. The most
  critical is the AMD fixes.

   - Fix wakeup interrupts in the AMD driver affecting AMD laptops.

   - Fix parent irqspec translation in the Qualcomm SPMI GPIO driver.

   - Fix deferred probe handling in the Rockchip driver, this is a
     stopgap solution while we look for something more elegant.

   - Add PM suspend callbacks to the Qualcomm SC7280 driver.

   - Some minor doc fix (should have come in earlier, sorry)"

* tag 'pinctrl-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: qcom: sc7280: Add PM suspend callbacks
  gpio/rockchip: fetch deferred output settings on probe
  pinctrl/rockchip: add a queue for deferred pin output settings on probe
  pinctrl: qcom: spmi-gpio: correct parent irqspec translation
  pinctrl: amd: Handle wake-up interrupt
  pinctrl: amd: Add irq field data
  pinctrl: core: Remove duplicated word from devm_pinctrl_unregister()

3 years agoMerge tag 'vfio-v5.15-rc4' of git://github.com/awilliam/linux-vfio
Linus Torvalds [Tue, 28 Sep 2021 23:06:31 +0000 (16:06 -0700)]
Merge tag 'vfio-v5.15-rc4' of git://github.com/awilliam/linux-vfio

Pull VFIO fixes from Alex Williamson:

 - Fix vfio-ap leak on uninit (Jason Gunthorpe)

 - Add missing prototype arg name (Colin Ian King)

* tag 'vfio-v5.15-rc4' of git://github.com/awilliam/linux-vfio:
  vfio/ap_ops: Add missed vfio_uninit_group_dev()
  vfio/pci: add missing identifier name in argument of function prototype

3 years agoMerge tag 'm68k-for-v5.15-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 28 Sep 2021 20:24:43 +0000 (13:24 -0700)]
Merge tag 'm68k-for-v5.15-tag3' of git://git./linux/kernel/git/geert/linux-m68k

Pull more m68k updates from Geert Uytterhoeven:

 - signal handling fixes

 - removal of set_fs()

[ The set_fs removal isn't strictly a fix, but it's been pending for a
  while and is very welcome. The signal handling fixes resolved an issue
  that was incorrectly attributed to the set_fs changes    - Linus ]

* tag 'm68k-for-v5.15-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Remove set_fs()
  m68k: Provide __{get,put}_kernel_nofault
  m68k: Factor the 8-byte lowlevel {get,put}_user code into helpers
  m68k: Use BUILD_BUG for passing invalid sizes to get_user/put_user
  m68k: Remove the 030 case in virt_to_phys_slow
  m68k: Document that access_ok is broken for !CONFIG_CPU_HAS_ADDRESS_SPACES
  m68k: Leave stack mangling to asm wrapper of sigreturn()
  m68k: Update ->thread.esp0 before calling syscall_trace() in ret_from_signal
  m68k: Handle arrivals of multiple signals correctly

3 years agoMerge tag 'nios2_fixes_for_v5.15_part1' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 28 Sep 2021 20:16:52 +0000 (13:16 -0700)]
Merge tag 'nios2_fixes_for_v5.15_part1' of git://git./linux/kernel/git/dinguyen/linux

Pull nios2 fixes from Dinh Nguyen:

 - Fix build warning for unmet dependency for EARLY_PRINTK

 - Remove unused dram_start() function

* tag 'nios2_fixes_for_v5.15_part1' of git://git.kernel.org/pub/scm/linux/kernel/git/dinguyen/linux:
  NIOS2: setup.c: drop unused variable 'dram_start'
  NIOS2: fix kconfig unmet dependency warning for SERIAL_CORE_CONSOLE

3 years agodrm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix
Prike Liang [Wed, 25 Aug 2021 05:36:38 +0000 (13:36 +0800)]
drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix

In the s2idle stress test sdma resume fail occasionally,in the
failed case GPU is in the gfxoff state.This issue may introduce
by firmware miss handle doorbell S/R and now temporary fix the issue
by forcing exit gfxoff for sdma resume.

Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/amdgpu: check tiling flags when creating FB on GFX8-
Simon Ser [Mon, 27 Sep 2021 15:08:44 +0000 (15:08 +0000)]
drm/amdgpu: check tiling flags when creating FB on GFX8-

On GFX9+, format modifiers are always enabled and ensure the
frame-buffers can be scanned out at ADDFB2 time.

On GFX8-, format modifiers are not supported and no other check
is performed. This means ADDFB2 IOCTLs will succeed even if the
tiling isn't supported for scan-out, and will result in garbage
displayed on screen [1].

Fix this by adding a check for tiling flags for GFX8 and older.
The check is taken from radeonsi in Mesa (see how is_displayable
is populated in gfx6_compute_surface).

Changes in v2: use drm_WARN_ONCE instead of drm_WARN (Michel)

[1]: https://github.com/swaywm/wlroots/issues/3185

Signed-off-by: Simon Ser <contact@emersion.fr>
Acked-by: Michel Dänzer <mdaenzer@redhat.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Cc: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/amd/display: Pass PCI deviceid into DC
Charlene Liu [Mon, 20 Sep 2021 18:30:02 +0000 (14:30 -0400)]
drm/amd/display: Pass PCI deviceid into DC

[why]
pci deviceid not passed to dal dc, without proper break,
dcn2.x falls into dcn3.x code path

[how]
pass in pci deviceid, and break once dal_version initialized.

Reviewed-by: Zhan Liu <Zhan.Liu@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/amd/display: initialize backlight_ramping_override to false
Josip Pavic [Fri, 17 Sep 2021 15:01:47 +0000 (11:01 -0400)]
drm/amd/display: initialize backlight_ramping_override to false

[Why]
Stack variable params.backlight_ramping_override is uninitialized, so it
contains junk data

[How]
Initialize the variable to false

Reviewed-by: Roman Li <Roman.Li@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/amdgpu: correct initial cp_hqd_quantum for gfx9
Hawking Zhang [Sun, 26 Sep 2021 14:19:35 +0000 (22:19 +0800)]
drm/amdgpu: correct initial cp_hqd_quantum for gfx9

didn't read the value of mmCP_HQD_QUANTUM from correct
register offset

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Le Ma <Le.Ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/amd/display: Fix Display Flicker on embedded panels
Praful Swarnakar [Wed, 22 Sep 2021 17:31:29 +0000 (23:01 +0530)]
drm/amd/display: Fix Display Flicker on embedded panels

[Why]
ASSR is dependent on Signed PSP Verstage to enable Content
Protection for eDP panels. Unsigned PSP verstage is used
during development phase causing ASSR to FAIL.
As a result, link training is performed with
DP_PANEL_MODE_DEFAULT instead of DP_PANEL_MODE_EDP for
eDP panels that causes display flicker on some panels.

[How]
- Do not change panel mode, if ASSR is disabled
- Just report and continue to perform eDP link training
with right settings further.

Signed-off-by: Praful Swarnakar <Praful.Swarnakar@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
3 years agodrm/amdgpu: fix gart.bo pin_count leak
Leslie Shi [Thu, 23 Sep 2021 08:05:31 +0000 (16:05 +0800)]
drm/amdgpu: fix gart.bo pin_count leak

gmc_v{9,10}_0_gart_disable() isn't called matched with
correspoding gart_enbale function in SRIOV case. This will
lead to gart.bo pin_count leak on driver unload.

Cc: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Leslie Shi <Yuliang.Shi@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
3 years agoselftests: KVM: Don't clobber XMM register when read
Oliver Upton [Mon, 27 Sep 2021 22:36:21 +0000 (22:36 +0000)]
selftests: KVM: Don't clobber XMM register when read

There is no need to clobber a register that is only being read from.
Oops. Drop the XMM register from the clobbers list.

Signed-off-by: Oliver Upton <oupton@google.com>
Message-Id: <20210927223621.50178-1-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoMerge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt
Linus Torvalds [Tue, 28 Sep 2021 14:53:53 +0000 (07:53 -0700)]
Merge tag 'fsverity-for-linus' of git://git./fs/fscrypt/fscrypt

Pull fsverity fix from Eric Biggers:
 "Fix an integer overflow when computing the Merkle tree layout of
  extremely large files, exposed by btrfs adding support for fs-verity"

* tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt:
  fs-verity: fix signed integer overflow with i_size near S64_MAX

3 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Tue, 28 Sep 2021 14:27:29 +0000 (07:27 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull virtio/vdpa fixes from Michael Tsirkin:
 "Fixes up some issues in rc1"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vdpa: potential uninitialized return in vhost_vdpa_va_map()
  vdpa/mlx5: Avoid executing set_vq_ready() if device is reset
  vdpa/mlx5: Clear ready indication for control VQ
  vduse: Cleanup the old kernel states after reset failure
  vduse: missing error code in vduse_init()
  virtio: don't fail on !of_device_is_compatible

3 years agoMerge tag 'mmc-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Tue, 28 Sep 2021 14:24:47 +0000 (07:24 -0700)]
Merge tag 'mmc-v5.15-2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:

 - renesas_sdhi: Fix regression with hard reset on old SDHIs

 - dw_mmc: Only inject fault before done/error

* tag 'mmc-v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: renesas_sdhi: fix regression with hard reset on old SDHIs
  mmc: dw_mmc: Only inject fault before done/error

3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Tue, 28 Sep 2021 12:52:46 +0000 (13:52 +0100)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2021-09-28

The following pull-request contains BPF updates for your *net* tree.

We've added 10 non-merge commits during the last 14 day(s) which contain
a total of 11 files changed, 139 insertions(+), 53 deletions(-).

The main changes are:

1) Fix MIPS JIT jump code emission for too large offsets, from Piotr Krysiuk.

2) Fix x86 JIT atomic/fetch emission when dst reg maps to rax, from Johan Almbladh.

3) Fix cgroup_sk_alloc corner case when called from interrupt, from Daniel Borkmann.

4) Fix segfault in libbpf's linker for objects without BTF, from Kumar Kartikeya Dwivedi.

5) Fix bpf_jit_charge_modmem for applications with CAP_BPF, from Lorenz Bauer.

6) Fix return value handling for struct_ops BPF programs, from Hou Tao.

7) Various fixes to BPF selftests, from Jiri Benc.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
,

3 years agonet: hns3: fix hclge_dbg_dump_tm_pg() stack usage
Arnd Bergmann [Tue, 28 Sep 2021 08:58:34 +0000 (10:58 +0200)]
net: hns3: fix hclge_dbg_dump_tm_pg() stack usage

This function copies strings around between multiple buffers
including a large on-stack array that causes a build warning
on 32-bit systems:

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c: In function 'hclge_dbg_dump_tm_pg':
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c:782:1: error: the frame size of 1424 bytes is larger than 1400 bytes [-Werror=frame-larger-than=]

The function can probably be cleaned up a lot, to go back to
printing directly into the output buffer, but dynamically allocating
the structure is a simpler workaround for now.

Fixes: 04d96139ddb3 ("net: hns3: refine function hclge_dbg_dump_tm_pri()")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: mdio: mscc-miim: Fix the mdio controller
Horatiu Vultur [Tue, 28 Sep 2021 07:17:20 +0000 (09:17 +0200)]
net: mdio: mscc-miim: Fix the mdio controller

According to the documentation the second resource is optional. But the
blamed commit ignores that and if the resource is not there it just
fails.

This patch reverts that to still allow the second resource to be
optional because other SoC have the some MDIO controller and doesn't
need to second resource.

Fixes: 672a1c394950 ("net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoaf_unix: Return errno instead of NULL in unix_create1().
Kuniyuki Iwashima [Tue, 28 Sep 2021 00:42:27 +0000 (09:42 +0900)]
af_unix: Return errno instead of NULL in unix_create1().

unix_create1() returns NULL on error, and the callers assume that it never
fails for reasons other than out of memory.  So, the callers always return
-ENOMEM when unix_create1() fails.

However, it also returns NULL when the number of af_unix sockets exceeds
twice the limit controlled by sysctl: fs.file-max.  In this case, the
callers should return -ENFILE like alloc_empty_file().

This patch changes unix_create1() to return the correct error value instead
of NULL on error.

Out of curiosity, the assumption has been wrong since 1999 due to this
change introduced in 2.2.4 [0].

  diff -u --recursive --new-file v2.2.3/linux/net/unix/af_unix.c linux/net/unix/af_unix.c
  --- v2.2.3/linux/net/unix/af_unix.c Tue Jan 19 11:32:53 1999
  +++ linux/net/unix/af_unix.c Sun Mar 21 07:22:00 1999
  @@ -388,6 +413,9 @@
   {
    struct sock *sk;

  + if (atomic_read(&unix_nr_socks) >= 2*max_files)
  + return NULL;
  +
    MOD_INC_USE_COUNT;
    sk = sk_alloc(PF_UNIX, GFP_KERNEL, 1);
    if (!sk) {

[0]: https://cdn.kernel.org/pub/linux/kernel/v2.2/patch-2.2.4.gz

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: udp: annotate data race around udp_sk(sk)->corkflag
Eric Dumazet [Tue, 28 Sep 2021 00:29:24 +0000 (17:29 -0700)]
net: udp: annotate data race around udp_sk(sk)->corkflag

up->corkflag field can be read or written without any lock.
Annotate accesses to avoid possible syzbot/KCSAN reports.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: sun: SUNVNET_COMMON should depend on INET
Randy Dunlap [Mon, 27 Sep 2021 21:48:23 +0000 (14:48 -0700)]
net: sun: SUNVNET_COMMON should depend on INET

When CONFIG_INET is not set, there are failing references to IPv4
functions, so make this driver depend on INET.

Fixes these build errors:

sparc64-linux-ld: drivers/net/ethernet/sun/sunvnet_common.o: in function `sunvnet_start_xmit_common':
sunvnet_common.c:(.text+0x1a68): undefined reference to `__icmp_send'
sparc64-linux-ld: drivers/net/ethernet/sun/sunvnet_common.o: in function `sunvnet_poll_common':
sunvnet_common.c:(.text+0x358c): undefined reference to `ip_send_check'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Aaron Young <aaron.young@oracle.com>
Cc: Rashmi Narasimhan <rashmi.narasimhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoionic: fix gathering of debug stats
Shannon Nelson [Mon, 27 Sep 2021 21:07:18 +0000 (14:07 -0700)]
ionic: fix gathering of debug stats

Don't print stats for which we haven't reserved space as it can
cause nasty memory bashing and related bad behaviors.

Fixes: aa620993b1e5 ("ionic: pull per-q stats work out of queue loops")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoMerge branch '1GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/t
David S. Miller [Tue, 28 Sep 2021 12:18:33 +0000 (13:18 +0100)]
Merge branch '1GbE' of git://git./linux/kernel/git/t
nguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2021-09-27

This series contains updates to e100 driver only.

Jake corrects under allocation of register buffer due to incorrect
calculations and fixes buffer overrun of register dump.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodmascc: add CONFIG_VIRT_TO_BUS dependency
Arnd Bergmann [Mon, 27 Sep 2021 14:15:24 +0000 (16:15 +0200)]
dmascc: add CONFIG_VIRT_TO_BUS dependency

Many architectures don't define virt_to_bus() any more, as drivers
should be using the dma-mapping interfaces where possible:

In file included from drivers/net/hamradio/dmascc.c:27:
drivers/net/hamradio/dmascc.c: In function 'tx_on':
drivers/net/hamradio/dmascc.c:976:30: error: implicit declaration of function 'virt_to_bus'; did you mean 'virt_to_fix'? [-Werror=implicit-function-declaration]
  976 |                              virt_to_bus(priv->tx_buf[priv->tx_tail]) + n);
      |                              ^~~~~~~~~~~
arch/arm/include/asm/dma.h:109:52: note: in definition of macro 'set_dma_addr'
  109 |         __set_dma_addr(chan, (void *)__bus_to_virt(addr))
      |                                                    ^~~~

Add the Kconfig dependency to prevent this from being built on
architectures without virt_to_bus().

Fixes: bc1abb9e55ce ("dmascc: use proper 'virt_to_bus()' rather than casting to 'int'")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agonet: ks8851: fix link error
Arnd Bergmann [Mon, 27 Sep 2021 14:13:02 +0000 (16:13 +0200)]
net: ks8851: fix link error

An object file cannot be built for both loadable module and built-in
use at the same time:

arm-linux-gnueabi-ld: drivers/net/ethernet/micrel/ks8851_common.o: in function `ks8851_probe_common':
ks8851_common.c:(.text+0xf80): undefined reference to `__this_module'

Change the ks8851_common code to be a standalone module instead,
and use Makefile logic to ensure this is built-in if at least one
of its two users is.

Fixes: 797047f875b5 ("net: ks8851: Implement Parallel bus operations")
Link: https://lore.kernel.org/netdev/20210125121937.3900988-1-arnd@kernel.org/
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agobpf, x86: Fix bpf mapping of atomic fetch implementation
Johan Almbladh [Mon, 27 Sep 2021 13:11:57 +0000 (13:11 +0000)]
bpf, x86: Fix bpf mapping of atomic fetch implementation

Fix the case where the dst register maps to %rax as otherwise this produces
an incorrect mapping with the implementation in 981f94c3e921 ("bpf: Add
bitwise atomic instructions") as %rax is clobbered given it's part of the
cmpxchg as operand.

The issue is similar to b29dd96b905f ("bpf, x86: Fix BPF_FETCH atomic and/or/
xor with r0 as src") just that the case of dst register was missed.

Before, dst=r0 (%rax) src=r2 (%rsi):

  [...]
  c5:   mov    %rax,%r10
  c8:   mov    0x0(%rax),%rax       <---+ (broken)
  cc:   mov    %rax,%r11                |
  cf:   and    %rsi,%r11                |
  d2:   lock cmpxchg %r11,0x0(%rax) <---+
  d8:   jne    0x00000000000000c8       |
  da:   mov    %rax,%rsi                |
  dd:   mov    %r10,%rax                |
  [...]                                 |
                                        |
After, dst=r0 (%rax) src=r2 (%rsi):     |
                                        |
  [...]                                 |
  da: mov    %rax,%r10                |
  dd: mov    0x0(%r10),%rax       <---+ (fixed)
  e1: mov    %rax,%r11                |
  e4: and    %rsi,%r11                |
  e7: lock cmpxchg %r11,0x0(%r10) <---+
  ed: jne    0x00000000000000dd
  ef: mov    %rax,%rsi
  f2: mov    %r10,%rax
  [...]

The remaining combinations were fine as-is though:

After, dst=r9 (%r15) src=r0 (%rax):

  [...]
  dc: mov    %rax,%r10
  df: mov    0x0(%r15),%rax
  e3: mov    %rax,%r11
  e6: and    %r10,%r11
  e9: lock cmpxchg %r11,0x0(%r15)
  ef: jne    0x00000000000000df      _
  f1: mov    %rax,%r10                | (unneeded, but
  f4: mov    %r10,%rax               _|  not a problem)
  [...]

After, dst=r9 (%r15) src=r4 (%rcx):

  [...]
  de: mov    %rax,%r10
  e1: mov    0x0(%r15),%rax
  e5: mov    %rax,%r11
  e8: and    %rcx,%r11
  eb: lock cmpxchg %r11,0x0(%r15)
  f1: jne    0x00000000000000e1
  f3: mov    %rax,%rcx
  f6: mov    %r10,%rax
  [...]

The case of dst == src register is rejected by the verifier and
therefore not supported, but x86 JIT also handles this case just
fine.

After, dst=r0 (%rax) src=r0 (%rax):

  [...]
  eb: mov    %rax,%r10
  ee: mov    0x0(%r10),%rax
  f2: mov    %rax,%r11
  f5: and    %r10,%r11
  f8: lock cmpxchg %r11,0x0(%r10)
  fe: jne    0x00000000000000ee
 100: mov    %rax,%r10
 103: mov    %r10,%rax
  [...]

Fixes: 981f94c3e921 ("bpf: Add bitwise atomic instructions")
Reported-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Co-developed-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Brendan Jackman <jackmanb@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
3 years agoiommu/dart: Clear sid2group entry when a group is freed
Sven Peter [Fri, 24 Sep 2021 13:45:02 +0000 (15:45 +0200)]
iommu/dart: Clear sid2group entry when a group is freed

sid2groups keeps track of which stream id combinations belong to a
iommu_group to assign those correctly to devices.
When a iommu_group is freed a stale pointer will however remain in
sid2groups. This prevents devices with the same stream id combination
to ever be attached again (see below).
Fix that by creating a shadow copy of the stream id configuration
when a group is allocated for the first time and clear the sid2group
entry when that group is freed.

  # echo 1 >/sys/bus/pci/devices/0000\:03\:00.0/remove
  pci 0000:03:00.0: Removing from iommu group 1
  # echo 1 >/sys/bus/pci/rescan
  [...]
  pci 0000:03:00.0: BAR 0: assigned [mem 0x6a0000000-0x6a000ffff 64bit pref]
  pci 0000:03:00.0: BAR 2: assigned [mem 0x6a0010000-0x6a001ffff 64bit pref]
  pci 0000:03:00.0: BAR 6: assigned [mem 0x6c0100000-0x6c01007ff pref]
  tg3 0000:03:00.0: Failed to add to iommu group 1: -2
  [...]

Fixes: 46d1fb072e76b161 ("iommu/dart: Add DART iommu driver")
Reported-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210924134502.15589-1-sven@svenpeter.dev
Signed-off-by: Joerg Roedel <jroedel@suse.de>
3 years agoiommu/vt-d: Drop "0x" prefix from PCI bus & device addresses
Bjorn Helgaas [Wed, 22 Sep 2021 05:47:26 +0000 (13:47 +0800)]
iommu/vt-d: Drop "0x" prefix from PCI bus & device addresses

719a19335692 ("iommu/vt-d: Tweak the description of a DMA fault") changed
the DMA fault reason from hex to decimal.  It also added "0x" prefixes to
the PCI bus/device, e.g.,

  - DMAR: [INTR-REMAP] Request device [00:00.5]
  + DMAR: [INTR-REMAP] Request device [0x00:0x00.5]

These no longer match dev_printk() and other similar messages in
dmar_match_pci_path() and dmar_acpi_insert_dev_scope().

Drop the "0x" prefixes from the bus and device addresses.

Fixes: 719a19335692 ("iommu/vt-d: Tweak the description of a DMA fault")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20210903193711.483999-1-helgaas@kernel.org
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210922054726.499110-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
3 years agoiommu/dart: Remove iommu_flush_ops
Sven Peter [Tue, 21 Sep 2021 15:39:34 +0000 (17:39 +0200)]
iommu/dart: Remove iommu_flush_ops

apple_dart_tlb_flush_{all,walk} expect to get a struct apple_dart_domain
but instead get a struct iommu_domain right now. This breaks those two
functions and can lead to kernel panics like the one below.
DART can only invalidate the entire TLB and apple_dart_iotlb_sync will
already flush everything. There's no need to do that again inside those
two functions. Let's just drop them.

  pci 0000:03:00.0: Removing from iommu group 1
  Unable to handle kernel paging request at virtual address 0000000100000023
  [...]
  Call trace:
   _raw_spin_lock_irqsave+0x54/0xbc
   apple_dart_hw_stream_command.constprop.0+0x2c/0x130
   apple_dart_tlb_flush_all+0x48/0x90
   free_io_pgtable_ops+0x40/0x70
   apple_dart_domain_free+0x2c/0x44
   iommu_group_release+0x68/0xac
   kobject_cleanup+0x4c/0x1fc
   kobject_cleanup+0x14c/0x1fc
   kobject_put+0x64/0x84
   iommu_group_remove_device+0x110/0x180
   iommu_release_device+0x50/0xa0
  [...]

Fixes: 46d1fb072e76b161 ("iommu/dart: Add DART iommu driver")
Reported-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Acked-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210921153934.35647-1-sven@svenpeter.dev
Signed-off-by: Joerg Roedel <jroedel@suse.de>
3 years agoALSA: pcsp: Make hrtimer forwarding more robust
Thomas Gleixner [Thu, 23 Sep 2021 16:04:25 +0000 (18:04 +0200)]
ALSA: pcsp: Make hrtimer forwarding more robust

The hrtimer callback pcsp_do_timer() prepares rearming of the timer with
hrtimer_forward(). hrtimer_forward() is intended to provide a mechanism to
forward the expiry time of the hrtimer by a multiple of the period argument
so that the expiry time greater than the time provided in the 'now'
argument.

pcsp_do_timer() invokes hrtimer_forward() with the current timer expiry
time as 'now' argument. That's providing a periodic timer expiry, but is
not really robust when the timer callback is delayed so that the resulting
new expiry time is already in the past which causes the callback to be
invoked immediately again. If the timer is delayed then the back to back
invocation is not really making it better than skipping the missed
periods. Sound is distorted in any case.

Use hrtimer_forward_now() which ensures that the next expiry is in the
future. This prevents hogging the CPU in the timer expiry code and allows
later on to remove hrtimer_forward() from the public interfaces.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: alsa-devel@alsa-project.org
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20210923153339.623208460@linutronix.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
3 years agoselftests, bpf: test_lwt_ip_encap: Really disable rp_filter
Jiri Benc [Thu, 23 Sep 2021 08:40:22 +0000 (10:40 +0200)]
selftests, bpf: test_lwt_ip_encap: Really disable rp_filter

It's not enough to set net.ipv4.conf.all.rp_filter=0, that does not override
a greater rp_filter value on the individual interfaces. We also need to set
net.ipv4.conf.default.rp_filter=0 before creating the interfaces. That way,
they'll also get their own rp_filter value of zero.

Fixes: 0fde56e4385b0 ("selftests: bpf: add test_lwt_ip_encap selftest")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/b1cdd9d469f09ea6e01e9c89a6071c79b7380f89.1632386362.git.jbenc@redhat.com
3 years agoselftests, bpf: Fix makefile dependencies on libbpf
Jiri Benc [Mon, 27 Sep 2021 16:01:36 +0000 (18:01 +0200)]
selftests, bpf: Fix makefile dependencies on libbpf

When building bpf selftest with make -j, I'm randomly getting build failures
such as this one:

  In file included from progs/bpf_flow.c:19:
  [...]/tools/testing/selftests/bpf/tools/include/bpf/bpf_helpers.h:11:10: fatal error: 'bpf_helper_defs.h' file not found
  #include "bpf_helper_defs.h"
           ^~~~~~~~~~~~~~~~~~~

The file that fails the build varies between runs but it's always in the
progs/ subdir.

The reason is a missing make dependency on libbpf for the .o files in
progs/. There was a dependency before commit 3ac2e20fba07e but that commit
removed it to prevent unneeded rebuilds. However, that only works if libbpf
has been built already; the 'wildcard' prerequisite does not trigger when
there's no bpf_helper_defs.h generated yet.

Keep the libbpf as an order-only prerequisite to satisfy both goals. It is
always built before the progs/ objects but it does not trigger unnecessary
rebuilds by itself.

Fixes: 3ac2e20fba07e ("selftests/bpf: BPF object files should depend only on libbpf headers")
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/ee84ab66436fba05a197f952af23c98d90eb6243.1632758415.git.jbenc@redhat.com
3 years agobpf, test, cgroup: Use sk_{alloc,free} for test cases
Daniel Borkmann [Mon, 27 Sep 2021 12:39:21 +0000 (14:39 +0200)]
bpf, test, cgroup: Use sk_{alloc,free} for test cases

BPF test infra has some hacks in place which kzalloc() a socket and perform
minimum init via sock_net_set() and sock_init_data(). As a result, the sk's
skcd->cgroup is NULL since it didn't go through proper initialization as it
would have been the case from sk_alloc(). Rather than re-adding a NULL test
in sock_cgroup_ptr() just for this, use sk_{alloc,free}() pair for the test
socket. The latter also allows to get rid of the bpf_sk_storage_free() special
case.

Fixes: 8520e224f547 ("bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode")
Fixes: b7a1848e8398 ("bpf: add BPF_PROG_TEST_RUN support for flow dissector")
Fixes: 2cb494a36c98 ("bpf: add tests for direct packet access from CGROUP_SKB")
Reported-by: syzbot+664b58e9a40fbb2cec71@syzkaller.appspotmail.com
Reported-by: syzbot+33f36d0754d4c5c0e102@syzkaller.appspotmail.com
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: syzbot+664b58e9a40fbb2cec71@syzkaller.appspotmail.com
Tested-by: syzbot+33f36d0754d4c5c0e102@syzkaller.appspotmail.com
Link: https://lore.kernel.org/bpf/20210927123921.21535-2-daniel@iogearbox.net
3 years agobpf, cgroup: Assign cgroup in cgroup_sk_alloc when called from interrupt
Daniel Borkmann [Mon, 27 Sep 2021 12:39:20 +0000 (14:39 +0200)]
bpf, cgroup: Assign cgroup in cgroup_sk_alloc when called from interrupt

If cgroup_sk_alloc() is called from interrupt context, then just assign the
root cgroup to skcd->cgroup. Prior to commit 8520e224f547 ("bpf, cgroups:
Fix cgroup v2 fallback on v1/v2 mixed mode") we would just return, and later
on in sock_cgroup_ptr(), we were NULL-testing the cgroup in fast-path, and
iff indeed NULL returning the root cgroup (v ?: &cgrp_dfl_root.cgrp). Rather
than re-adding the NULL-test to the fast-path we can just assign it once from
cgroup_sk_alloc() given v1/v2 handling has been simplified. The migration from
NULL test with returning &cgrp_dfl_root.cgrp to assigning &cgrp_dfl_root.cgrp
directly does /not/ change behavior for callers of sock_cgroup_ptr().

syzkaller was able to trigger a splat in the legacy netrom code base, where
the RX handler in nr_rx_frame() calls nr_make_new() which calls sk_alloc()
and therefore cgroup_sk_alloc() with in_interrupt() condition. Thus the NULL
skcd->cgroup, where it trips over on cgroup_sk_free() side given it expects
a non-NULL object. There are a few other candidates aside from netrom which
have similar pattern where in their accept-like implementation, they just call
to sk_alloc() and thus cgroup_sk_alloc() instead of sk_clone_lock() with the
corresponding cgroup_sk_clone() which then inherits the cgroup from the parent
socket. None of them are related to core protocols where BPF cgroup programs
are running from. However, in future, they should follow to implement a similar
inheritance mechanism.

Additionally, with a !CONFIG_CGROUP_NET_PRIO and !CONFIG_CGROUP_NET_CLASSID
configuration, the same issue was exposed also prior to 8520e224f547 due to
commit e876ecc67db8 ("cgroup: memcg: net: do not associate sock with unrelated
cgroup") which added the early in_interrupt() return back then.

Fixes: 8520e224f547 ("bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode")
Fixes: e876ecc67db8 ("cgroup: memcg: net: do not associate sock with unrelated cgroup")
Reported-by: syzbot+df709157a4ecaf192b03@syzkaller.appspotmail.com
Reported-by: syzbot+533f389d4026d86a2a95@syzkaller.appspotmail.com
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Tested-by: syzbot+df709157a4ecaf192b03@syzkaller.appspotmail.com
Tested-by: syzbot+533f389d4026d86a2a95@syzkaller.appspotmail.com
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/bpf/20210927123921.21535-1-daniel@iogearbox.net
3 years agolibbpf: Fix segfault in static linker for objects without BTF
Kumar Kartikeya Dwivedi [Fri, 24 Sep 2021 02:37:25 +0000 (08:07 +0530)]
libbpf: Fix segfault in static linker for objects without BTF

When a BPF object is compiled without BTF info (without -g),
trying to link such objects using bpftool causes a SIGSEGV due to
btf__get_nr_types accessing obj->btf which is NULL. Fix this by
checking for the NULL pointer, and return error.

Reproducer:
$ cat a.bpf.c
extern int foo(void);
int bar(void) { return foo(); }
$ cat b.bpf.c
int foo(void) { return 0; }
$ clang -O2 -target bpf -c a.bpf.c
$ clang -O2 -target bpf -c b.bpf.c
$ bpftool gen obj out a.bpf.o b.bpf.o
Segmentation fault (core dumped)

After fix:
$ bpftool gen obj out a.bpf.o b.bpf.o
libbpf: failed to find BTF info for object 'a.bpf.o'
Error: failed to link 'a.bpf.o': Unknown error -22 (-22)

Fixes: a46349227cd8 (libbpf: Add linker extern resolution support for functions and global variables)
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210924023725.70228-1-memxor@gmail.com
3 years agoMAINTAINERS: Add btf headers to BPF
Dave Marchevsky [Fri, 24 Sep 2021 19:35:57 +0000 (12:35 -0700)]
MAINTAINERS: Add btf headers to BPF

BPF folks maintain these and they're not picked up by the current
MAINTAINERS entries.

Files caught by the added globs:

  include/linux/btf.h
  include/linux/btf_ids.h
  include/uapi/linux/btf.h

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210924193557.3081469-1-davemarchevsky@fb.com
3 years agobpf: Exempt CAP_BPF from checks against bpf_jit_limit
Lorenz Bauer [Wed, 22 Sep 2021 11:11:52 +0000 (12:11 +0100)]
bpf: Exempt CAP_BPF from checks against bpf_jit_limit

When introducing CAP_BPF, bpf_jit_charge_modmem() was not changed to treat
programs with CAP_BPF as privileged for the purpose of JIT memory allocation.
This means that a program without CAP_BPF can block a program with CAP_BPF
from loading a program.

Fix this by checking bpf_capable() in bpf_jit_charge_modmem().

Fixes: 2c78ee898d8f ("bpf: Implement CAP_BPF")
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20210922111153.19843-1-lmb@cloudflare.com
3 years agoMerge tag 'drm/tegra/for-5.15-rc3' of ssh://git.freedesktop.org/git/tegra/linux into...
Dave Airlie [Tue, 28 Sep 2021 07:05:58 +0000 (17:05 +1000)]
Merge tag 'drm/tegra/for-5.15-rc3' of ssh://git.freedesktop.org/git/tegra/linux into drm-fixes

drm/tegra: Fixes for v5.15-rc3

This contains a fix for an UAPI error that happens when no IOMMU is
enabled, as well as a few build warning fixes and plugs a potential
memory leak.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210924143537.1341882-1-thierry.reding@gmail.com
3 years agoMerge tag 'perf-tools-fixes-for-v5.15-2021-09-27' of git://git.kernel.org/pub/scm...
Linus Torvalds [Mon, 27 Sep 2021 21:06:42 +0000 (14:06 -0700)]
Merge tag 'perf-tools-fixes-for-v5.15-2021-09-27' of git://git./linux/kernel/git/acme/linux

Pull more perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix 'perf test' DWARF unwind for optimized builds.

 - Fix 'perf test' 'Object code reading' when dealing with samples in
   @plt symbols.

 - Fix off-by-one directory paths in the ARM support code.

 - Fix error message to eliminate confusion in 'perf config' when first
   creating a config file.

 - 'perf iostat' fix for system wide operation.

 - Fix printing of metrics when 'perf iostat' is used with one or more
   iio_root_ports and unconnected cpus (using -C).

 - Fix several typos in the documentation files.

 - Fix spelling mistake "icach" -> "icache" in the power8 JSON vendor
   files.

* tag 'perf-tools-fixes-for-v5.15-2021-09-27' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf iostat: Fix Segmentation fault from NULL 'struct perf_counts_values *'
  perf iostat: Use system-wide mode if the target cpu_list is unspecified
  perf config: Refine error message to eliminate confusion
  perf doc: Fix typos all over the place
  perf arm: Fix off-by-one directory paths.
  perf vendor events powerpc: Fix spelling mistake "icach" -> "icache"
  perf tests: Fix flaky test 'Object code reading'
  perf test: Fix DWARF unwind for optimized builds.

3 years agoMerge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Mon, 27 Sep 2021 20:58:23 +0000 (13:58 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:
 "A bit late... I got sidetracked by back-from-vacation routines and
  conferences. But most of these patches are already a few weeks old and
  things look more calm on the mailing list than what this pull request
  would suggest.

  x86:

   - missing TLB flush

   - nested virtualization fixes for SMM (secure boot on nested
     hypervisor) and other nested SVM fixes

   - syscall fuzzing fixes

   - live migration fix for AMD SEV

   - mirror VMs now work for SEV-ES too

   - fixes for reset

   - possible out-of-bounds access in IOAPIC emulation

   - fix enlightened VMCS on Windows 2022

  ARM:

   - Add missing FORCE target when building the EL2 object

   - Fix a PMU probe regression on some platforms

  Generic:

   - KCSAN fixes

  selftests:

   - random fixes, mostly for clang compilation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (43 commits)
  selftests: KVM: Explicitly use movq to read xmm registers
  selftests: KVM: Call ucall_init when setting up in rseq_test
  KVM: Remove tlbs_dirty
  KVM: X86: Synchronize the shadow pagetable before link it
  KVM: X86: Fix missed remote tlb flush in rmap_write_protect()
  KVM: x86: nSVM: don't copy virt_ext from vmcb12
  KVM: x86: nSVM: test eax for 4K alignment for GP errata workaround
  KVM: x86: selftests: test simultaneous uses of V_IRQ from L1 and L0
  KVM: x86: nSVM: restore int_vector in svm_clear_vintr
  kvm: x86: Add AMD PMU MSRs to msrs_to_save_all[]
  KVM: x86: nVMX: re-evaluate emulation_required on nested VM exit
  KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if !from_vmentry
  KVM: x86: VMX: synthesize invalid VM exit when emulating invalid guest state
  KVM: x86: nSVM: refactor svm_leave_smm and smm_enter_smm
  KVM: x86: SVM: call KVM_REQ_GET_NESTED_STATE_PAGES on exit from SMM mode
  KVM: x86: reset pdptrs_from_userspace when exiting smm
  KVM: x86: nSVM: restore the L1 host state prior to resuming nested guest on SMM exit
  KVM: nVMX: Filter out all unsupported controls when eVMCS was activated
  KVM: KVM: Use cpumask_available() to check for NULL cpumask when kicking vCPUs
  KVM: Clean up benign vcpu->cpu data races when kicking vCPUs
  ...

3 years agoMerge tag 'media/v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab...
Linus Torvalds [Mon, 27 Sep 2021 20:05:12 +0000 (13:05 -0700)]
Merge tag 'media/v5.15-2' of git://git./linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:
 "A couple of driver fixes:

   - hantro: Fix check for single irq

   - cedrus: Fix SUNXI tile size calculation

   - s5p-jpeg: rename JPEG marker constants to prevent build warnings

   - ir_toy: prevent device from hanging during transmit"

* tag 'media/v5.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: ir_toy: prevent device from hanging during transmit
  media: s5p-jpeg: rename JPEG marker constants to prevent build warnings
  media: cedrus: Fix SUNXI tile size calculation
  media: hantro: Fix check for single irq

3 years agowatchdog/sb_watchdog: fix compilation problem due to COMPILE_TEST
Jackie Liu [Mon, 13 Sep 2021 07:32:20 +0000 (15:32 +0800)]
watchdog/sb_watchdog: fix compilation problem due to COMPILE_TEST

Compiling sb_watchdog needs to clearly define SIBYTE_HDR_FEATURES.
In arch/mips/sibyte/Platform like:

  cflags-$(CONFIG_SIBYTE_BCM112X) +=                                      \
                -I$(srctree)/arch/mips/include/asm/mach-sibyte          \
                -DSIBYTE_HDR_FEATURES=SIBYTE_HDR_FMASK_1250_112x_ALL

Otherwise, SIBYTE_HDR_FEATURES is SIBYTE_HDR_FMASK_ALL.
SIBYTE_HDR_FMASK_ALL is mean:

 #define SIBYTE_HDR_FMASK_ALL  SIBYTE_HDR_FMASK_1250_ALL | SIBYTE_HDR_FMASK_112x_ALL \
     | SIBYTE_HDR_FMASK_1480_ALL)

So, If not limited to CPU_SB1, we will get such an error:

  arch/mips/include/asm/sibyte/bcm1480_scd.h:261: error: "M_SPC_CFG_CLEAR" redefined [-Werror]
  arch/mips/include/asm/sibyte/bcm1480_scd.h:262: error: "M_SPC_CFG_ENABLE" redefined [-Werror]

Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible")
Signed-off-by: Jackie Liu <liuyun01@kylinos.cn>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agovboxfs: fix broken legacy mount signature checking
Linus Torvalds [Mon, 27 Sep 2021 18:26:21 +0000 (11:26 -0700)]
vboxfs: fix broken legacy mount signature checking

Commit 9d682ea6bcc7 ("vboxsf: Fix the check for the old binary
mount-arguments struct") was meant to fix a build error due to sign
mismatch in 'char' and the use of character constants, but it just moved
the error elsewhere, in that on some architectures characters and signed
and on others they are unsigned, and that's just how the C standard
works.

The proper fix is a simple "don't do that then".  The code was just
being silly and odd, and it should never have cared about signed vs
unsigned characters in the first place, since what it is testing is not
four "characters", but four bytes.

And the way to compare four bytes is by using "memcmp()".

Which compilers will know to just turn into a single 32-bit compare with
a constant, as long as you don't have crazy debug options enabled.

Link: https://lore.kernel.org/lkml/20210927094123.576521-1-arnd@kernel.org/
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
3 years agoRDMA/hns: Add the check of the CQE size of the user space
Wenpeng Liang [Mon, 27 Sep 2021 12:55:57 +0000 (20:55 +0800)]
RDMA/hns: Add the check of the CQE size of the user space

If the CQE size of the user space is not the size supported by the
hardware, the creation of CQ should be stopped.

Fixes: 09a5f210f67e ("RDMA/hns: Add support for CQE in size of 64 Bytes")
Link: https://lore.kernel.org/r/20210927125557.15031-3-liangwenpeng@huawei.com
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/hns: Fix the size setting error when copying CQE in clean_cq()
Wenpeng Liang [Mon, 27 Sep 2021 12:55:56 +0000 (20:55 +0800)]
RDMA/hns: Fix the size setting error when copying CQE in clean_cq()

The size of CQE is different for different versions of hardware, so the
driver needs to specify the size of CQE explicitly.

Fixes: 09a5f210f67e ("RDMA/hns: Add support for CQE in size of 64 Bytes")
Link: https://lore.kernel.org/r/20210927125557.15031-2-liangwenpeng@huawei.com
Signed-off-by: Wenpeng Liang <liangwenpeng@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoRDMA/hfi1: Fix kernel pointer leak
Guo Zhi [Wed, 22 Sep 2021 13:48:57 +0000 (21:48 +0800)]
RDMA/hfi1: Fix kernel pointer leak

Pointers should be printed with %p or %px rather than cast to 'unsigned
long long' and printed with %llx.  Change %llx to %p to print the secured
pointer.

Fixes: 042a00f93aad ("IB/{ipoib,hfi1}: Add a timeout handler for rdma_netdev")
Link: https://lore.kernel.org/r/20210922134857.619602-1-qtxuning1999@sjtu.edu.cn
Signed-off-by: Guo Zhi <qtxuning1999@sjtu.edu.cn>
Acked-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
3 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid
Linus Torvalds [Mon, 27 Sep 2021 16:51:31 +0000 (09:51 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/hid/hid

Pull HID fixes from Jiri Kosina:

 - NULL pointer dereference fixes in amd_sfh driver (Basavaraj Natikar,
   Evgeny Novikov)

 - data processing fix for hid-u2fzero (Andrej Shadura)

 - fix for out-of-bounds write in hid-betop (F.A.Sulaiman)

 - new device IDs / device-specific quirks

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid:
  HID: amd_sfh: Fix potential NULL pointer dereference
  HID: u2fzero: ignore incomplete packets without data
  HID: amd_sfh: Fix potential NULL pointer dereference
  HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs
  HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS
  HID: betop: fix slab-out-of-bounds Write in betop_probe

3 years agoe100: fix buffer overrun in e100_get_regs
Jacob Keller [Wed, 8 Sep 2021 17:52:37 +0000 (10:52 -0700)]
e100: fix buffer overrun in e100_get_regs

The e100_get_regs function is used to implement a simple register dump
for the e100 device. The data is broken into a couple of MAC control
registers, and then a series of PHY registers, followed by a memory dump
buffer.

The total length of the register dump is defined as (1 + E100_PHY_REGS)
* sizeof(u32) + sizeof(nic->mem->dump_buf).

The logic for filling in the PHY registers uses a convoluted inverted
count for loop which counts from E100_PHY_REGS (0x1C) down to 0, and
assigns the slots 1 + E100_PHY_REGS - i. The first loop iteration will
fill in [1] and the final loop iteration will fill in [1 + 0x1C]. This
is actually one more than the supposed number of PHY registers.

The memory dump buffer is then filled into the space at
[2 + E100_PHY_REGS] which will cause that memcpy to assign 4 bytes past
the total size.

The end result is that we overrun the total buffer size allocated by the
kernel, which could lead to a panic or other issues due to memory
corruption.

It is difficult to determine the actual total number of registers
here. The only 8255x datasheet I could find indicates there are 28 total
MDI registers. However, we're reading 29 here, and reading them in
reverse!

In addition, the ethtool e100 register dump interface appears to read
the first PHY register to determine if the device is in MDI or MDIx
mode. This doesn't appear to be documented anywhere within the 8255x
datasheet. I can only assume it must be in register 28 (the extra
register we're reading here).

Lets not change any of the intended meaning of what we copy here. Just
extend the space by 4 bytes to account for the extra register and
continue copying the data out in the same order.

Change the E100_PHY_REGS value to be the correct total (29) so that the
total register dump size is calculated properly. Fix the offset for
where we copy the dump buffer so that it doesn't overrun the total size.

Re-write the for loop to use counting up instead of the convoluted
down-counting. Correct the mdio_read offset to use the 0-based register
offsets, but maintain the bizarre reverse ordering so that we have the
ABI expected by applications like ethtool. This requires and additional
subtraction of 1. It seems a bit odd but it makes the flow of assignment
into the register buffer easier to follow.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Felicitas Hetzelt <felicitashetzelt@gmail.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoe100: fix length calculation in e100_get_regs_len
Jacob Keller [Wed, 8 Sep 2021 17:52:36 +0000 (10:52 -0700)]
e100: fix length calculation in e100_get_regs_len

commit abf9b902059f ("e100: cleanup unneeded math") tried to simplify
e100_get_regs_len and remove a double 'divide and then multiply'
calculation that the e100_reg_regs_len function did.

This change broke the size calculation entirely as it failed to account
for the fact that the numbered registers are actually 4 bytes wide and
not 1 byte. This resulted in a significant under allocation of the
register buffer used by e100_get_regs.

Fix this by properly multiplying the register count by u32 first before
adding the size of the dump buffer.

Fixes: abf9b902059f ("e100: cleanup unneeded math")
Reported-by: Felicitas Hetzelt <felicitashetzelt@gmail.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoKVM: VMX: Fix a TSX_CTRL_CPUID_CLEAR field mask issue
Zhenzhong Duan [Sun, 26 Sep 2021 01:55:45 +0000 (09:55 +0800)]
KVM: VMX: Fix a TSX_CTRL_CPUID_CLEAR field mask issue

When updating the host's mask for its MSR_IA32_TSX_CTRL user return entry,
clear the mask in the found uret MSR instead of vmx->guest_uret_msrs[i].
Modifying guest_uret_msrs directly is completely broken as 'i' does not
point at the MSR_IA32_TSX_CTRL entry.  In fact, it's guaranteed to be an
out-of-bounds accesses as is always set to kvm_nr_uret_msrs in a prior
loop. By sheer dumb luck, the fallout is limited to "only" failing to
preserve the host's TSX_CTRL_CPUID_CLEAR.  The out-of-bounds access is
benign as it's guaranteed to clear a bit in a guest MSR value, which are
always zero at vCPU creation on both x86-64 and i386.

Cc: stable@vger.kernel.org
Fixes: 8ea8b8d6f869 ("KVM: VMX: Use common x86's uret MSR list as the one true list")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20210926015545.281083-1-zhenzhong.duan@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
3 years agoNIOS2: setup.c: drop unused variable 'dram_start'
Randy Dunlap [Fri, 24 Sep 2021 21:05:25 +0000 (14:05 -0700)]
NIOS2: setup.c: drop unused variable 'dram_start'

This is a nuisance when CONFIG_WERROR is set, so drop the variable
declaration since the code that used it was removed.

../arch/nios2/kernel/setup.c: In function 'setup_arch':
../arch/nios2/kernel/setup.c:152:13: warning: unused variable 'dram_start' [-Wunused-variable]
  152 |         int dram_start;

Fixes: 7f7bc20bc41a ("nios2: Don't use _end for calculating min_low_pfn")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Andreas Oetken <andreas.oetken@siemens.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
3 years agonet: phy: enhance GPY115 loopback disable function
Xu Liang [Mon, 27 Sep 2021 07:03:02 +0000 (15:03 +0800)]
net: phy: enhance GPY115 loopback disable function

GPY115 need reset PHY when it comes out from loopback mode if the firmware
version number (lower 8 bits) is equal to or below 0x76.

Fixes: 7d901a1e878a ("net: phy: add Maxlinear GPY115/21x/24x driver")
Signed-off-by: Xu Liang <lxu@maxlinear.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoperf iostat: Fix Segmentation fault from NULL 'struct perf_counts_values *'
Like Xu [Mon, 27 Sep 2021 08:11:15 +0000 (16:11 +0800)]
perf iostat: Fix Segmentation fault from NULL 'struct perf_counts_values *'

If the 'perf iostat' user specifies two or more iio_root_ports and also
specifies the cpu(s) by -C which is not *connected to all* the above iio
ports, the iostat_print_metric() will run into trouble:

For example:

  $ perf iostat list
  S0-uncore_iio_0<0000:16>
  S1-uncore_iio_0<0000:97> # <--- CPU 1 is located in the socket S0

  $ perf iostat 0000:16,0000:97 -C 1 -- ls
  port  Inbound Read(MB) Inbound Write(MB) Outbound Read(MB) Outbound
  Write(MB) ../perf-iostat: line 12: 104418 Segmentation fault
  (core dumped) perf stat --iostat$DELIMITER$*

The core-dump stack says, in the above corner case, the returned
(struct perf_counts_values *) count will be NULL, and the caller
iostat_print_metric() apparently doesn't not handle this case.

  433 struct perf_counts_values *count = perf_counts(evsel->counts, die, 0);
  434
  435 if (count->run && count->ena) {
  (gdb) p count
  $1 = (struct perf_counts_values *) 0x0

The deeper reason is that there are actually no statistics from the user
specified pair "iostat 0000:X, -C (disconnected) Y ", but let's fix it with
minimum cost by adding a NULL check in the user space.

Fixes: f9ed693e8bc0e7de ("perf stat: Enable iostat mode for x86 platforms")
Signed-off-by: Like Xu <likexu@tencent.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210927081115.39568-2-likexu@tencent.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge tag 'mac80211-for-net-2021-09-27' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Mon, 27 Sep 2021 12:39:39 +0000 (13:39 +0100)]
Merge tag 'mac80211-for-net-2021-09-27' of git://git./linux/kernel/git/jberg/mac80211

Johannes berg says:

====================
Some fixes:
 * potential use-after-free in CCMP/GCMP RX processing
 * potential use-after-free in TX A-MSDU processing
 * revert to low data rates for no-ack as the commit
   broke other things
 * limit VHT MCS/NSS in radiotap injection
 * drop frames with invalid addresses in IBSS mode
 * check rhashtable_init() return value in mesh
 * fix potentially unaligned access in mesh
 * fix late beacon hrtimer handling in hwsim (syzbot)
 * fix documentation for PTK0 rekeying
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agoperf iostat: Use system-wide mode if the target cpu_list is unspecified
Like Xu [Mon, 27 Sep 2021 08:11:14 +0000 (16:11 +0800)]
perf iostat: Use system-wide mode if the target cpu_list is unspecified

An iostate use case like "perf iostat 0000:16,0000:97 -- ls" should be
implemented to work in system-wide mode to ensure that the output from
print_header() is consistent with the user documentation perf-iostat.txt,
rather than incorrectly assuming that the kernel does not support it:

 Error:
 The sys_perf_event_open() syscall returned with 22 (Invalid argument) \
 for event (uncore_iio_0/event=0x83,umask=0x04,ch_mask=0xF,fc_mask=0x07/).
 /bin/dmesg | grep -i perf may provide additional information.

This error is easily fixed by assigning system-wide mode by default
for IOSTAT_RUN only when the target cpu_list is unspecified.

Fixes: f07952b179697771 ("perf stat: Basic support for iostat in perf")
Signed-off-by: Like Xu <likexu@tencent.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210927081115.39568-1-likexu@tencent.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf config: Refine error message to eliminate confusion
Like Xu [Fri, 24 Sep 2021 11:58:17 +0000 (19:58 +0800)]
perf config: Refine error message to eliminate confusion

If there is no configuration file at first, the user can write any pair
of "key.subkey=value" to the newly created configuration file, while
value validation against a valid configurable key is *deferred* until
the next execution or the implied execution of "perf config ... ".

For example:

  $ rm ~/.perfconfig
  $ perf config call-graph.dump-size=65529
  $ cat ~/.perfconfig
  # this file is auto-generated.
  [call-graph]
  dump-size = 65529
  $ perf config call-graph.dump-size=2048
  callchain: Incorrect stack dump size (max 65528): 65529
  Error: wrong config key-value pair call-graph.dump-size=65529

The user might expect that the second value 2048 is valid and can be
updated to the configuration file, but the error message is very
confusing because the first value 65529 is not reported as an error
during the last configuration.

It is recommended not to change the current behavior of delayed
validation (as more effort is needed), but to refine the original error
message to *clearly indicate* that the cause of the error is the
configuration file.

Signed-off-by: Like Xu <likexu@tencent.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20210924115817.58689-1-likexu@tencent.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf doc: Fix typos all over the place
Like Xu [Fri, 24 Sep 2021 08:19:42 +0000 (16:19 +0800)]
perf doc: Fix typos all over the place

Considering that perf and its subcommands have so many parameters, the
documentation is always the first stop for perf beginners. Fixing some
spelling errors will relax the eyes of some readers a little bit.

 s/specicfication/specification/
 s/caheline/cacheline/
 s/tranasaction/transaction/
 s/complan/complain/
 s/sched_wakep/sched_wakeup/
 s/possble/possible/
 s/methology/methodology/

Signed-off-by: Like Xu <likexu@tencent.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210924081942.38368-1-likexu@tencent.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf arm: Fix off-by-one directory paths.
Ian Rogers [Thu, 23 Sep 2021 15:42:54 +0000 (08:42 -0700)]
perf arm: Fix off-by-one directory paths.

Relative path include works in the regular build due to -I paths but may
fail in other situations.

v2. Rebase. Comments on v1 were that we should handle include paths
    differently and it is agreed that can be a sensible refactor but
    beyond the scope of this change.
https://lore.kernel.org/lkml/20210504191227.793712-1-irogers@google.com/

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lore.kernel.org/lkml/20210923154254.737657-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf vendor events powerpc: Fix spelling mistake "icach" -> "icache"
Colin Ian King [Thu, 16 Sep 2021 08:13:14 +0000 (09:13 +0100)]
perf vendor events powerpc: Fix spelling mistake "icach" -> "icache"

There is a spelling mistake in the description text, fix it.

Signed-off-by: Colin King <colin.king@canonical.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-janitors@vger.kernel.org
Link: http://lore.kernel.org/lkml/20210916081314.41751-1-colin.king@canonical.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf tests: Fix flaky test 'Object code reading'
James Clark [Mon, 6 Sep 2021 15:22:38 +0000 (16:22 +0100)]
perf tests: Fix flaky test 'Object code reading'

This test occasionally fails on aarch64 when a sample is taken in
free@plt and it fails with "Bytes read differ from those read by
objdump".

This is because that symbol is near a section boundary in the elf file.
Despite the -z option to always output zeros, objdump uses
bfd_map_over_sections() to iterate through the elf file so it doesn't
see outside of the sections where these zeros are and can't print them.

For example this boundary proceeds free@plt in libc with a gap of 48
bytes between .plt and .text:

  objdump -d -z --start-address=0x23cc8 --stop-address=0x23d08 libc-2.30.so

  libc-2.30.so:     file format elf64-littleaarch64

  Disassembly of section .plt:

  0000000000023cc8 <*ABS*+0x7fd00@plt+0x8>:
     23cc8: 91018210  add x16, x16, #0x60
     23ccc: d61f0220  br x17

  Disassembly of section .text:

  0000000000023d00 <abort@@GLIBC_2.17-0x98>:
     23d00: a9bf7bfd  stp x29, x30, [sp, #-16]!
     23d04: 910003fd  mov x29, sp

Taking a sample in free@plt is very rare because it is so small, but the
test can be forced to fail almost every time on any platform by linking
the test with a shared library that has a single empty function and
calling it in a loop.

The fix is to zero the buffers so that when there is a jump in the
addresses output by objdump, zeros are already filled in between.

Signed-off-by: James Clark <james.clark@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20210906152238.3415467-1-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoperf test: Fix DWARF unwind for optimized builds.
Ian Rogers [Wed, 22 Sep 2021 17:38:12 +0000 (10:38 -0700)]
perf test: Fix DWARF unwind for optimized builds.

To ensure the stack frames are on the stack tail calls optimizations
need to be inhibited. If your compiler supports an attribute use it,
otherwise use an asm volatile barrier.

The barrier fix was suggested here:
https://lore.kernel.org/lkml/20201028081123.GT2628@hirez.programming.kicks-ass.net/
Tested with an optimized clang build and by forcing the asm barrier
route with an optimized clang build.

A GCC bug tracking a proper disable_tail_calls is:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97831

Fixes: 9ae1e990f1ab ("perf tools: Remove broken __no_tail_call
       attribute")

v2. is a rebase. The original fix patch generated quite a lot of
    discussion over the right place for the fix:
    https://lore.kernel.org/lkml/20201114000803.909530-1-irogers@google.com/
    The patch reflects my preference of it being near the use, so that
    future code cleanups don't break this somewhat special usage.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: clang-built-linux@googlegroups.com
Link: http://lore.kernel.org/lkml/20210922173812.456348-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
3 years agoMerge branch 'mv88e6xxx-mtu-fixes'
David S. Miller [Mon, 27 Sep 2021 12:31:10 +0000 (13:31 +0100)]
Merge branch 'mv88e6xxx-mtu-fixes'

Andrew Lunn says:

====================
mv88e6xxx: MTU fixes

These three patches fix MTU issues reported by 曹煜.

There are two different ways of configuring the MTU in the hardware.
The 6161 family is using the wrong method. Some of the marvell switch
enforce the MTU when the port is used for CPU/DSA, some don't.
Because of the extra header, the MTU needs increasing with this
overhead.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
3 years agodsa: mv88e6xxx: Include tagger overhead when setting MTU for DSA and CPU ports
Andrew Lunn [Sun, 26 Sep 2021 17:41:26 +0000 (19:41 +0200)]
dsa: mv88e6xxx: Include tagger overhead when setting MTU for DSA and CPU ports

Same members of the Marvell Ethernet switches impose MTU restrictions
on ports used for connecting to the CPU or another switch for DSA. If
the MTU is set too low, tagged frames will be discarded. Ensure the
worst case tagger overhead is included in setting the MTU for DSA and
CPU ports.

Fixes: 1baf0fac10fb ("net: dsa: mv88e6xxx: Use chip-wide max frame size for MTU")
Reported by: 曹煜 <cao88yu@gmail.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>