Markus Boehme [Tue, 20 Jul 2021 23:26:19 +0000 (16:26 -0700)]
ixgbe: Fix packet corruption due to missing DMA sync
When receiving a packet with multiple fragments, hardware may still
touch the first fragment until the entire packet has been received. The
driver therefore keeps the first fragment mapped for DMA until end of
packet has been asserted, and delays its dma_sync call until then.
The driver tries to fit multiple receive buffers on one page. When using
3K receive buffers (e.g. using Jumbo frames and legacy-rx is turned
off/build_skb is being used) on an architecture with 4K pages, the
driver allocates an order 1 compound page and uses one page per receive
buffer. To determine the correct offset for a delayed DMA sync of the
first fragment of a multi-fragment packet, the driver then cannot just
use PAGE_MASK on the DMA address but has to construct a mask based on
the actual size of the backing page.
Using PAGE_MASK in the 3K RX buffer/4K page architecture configuration
will always sync the first page of a compound page. With the SWIOTLB
enabled this can lead to corrupted packets (zeroed out first fragment,
re-used garbage from another packet) and various consequences, such as
slow/stalling data transfers and connection resets. For example, testing
on a link with MTU exceeding 3058 bytes on a host with SWIOTLB enabled
(e.g. "iommu=soft swiotlb=262144,force") TCP transfers quickly fizzle
out without this patch.
Cc: stable@vger.kernel.org
Fixes:
0c5661ecc5dd7 ("ixgbe: fix crash in build_skb Rx code path")
Signed-off-by: Markus Boehme <markubo@amazon.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jia He [Tue, 20 Jul 2021 13:26:55 +0000 (21:26 +0800)]
Revert "qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()"
This reverts commit
6206b7981a36476f4695d661ae139f7db36a802d.
That patch added additional spin_{un}lock_bh(), which was harmless
but pointless. The orginal code path has guaranteed the pair of
spin_{un}lock_bh().
We'd better revert it before we find the exact root cause of the
bug_on mentioned in that patch.
Fixes:
6206b7981a36 ("qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()")
Cc: David S. Miller <davem@davemloft.net>
Cc: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Jia He <justin.he@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Tue, 20 Jul 2021 13:08:40 +0000 (15:08 +0200)]
ipv6: fix another slab-out-of-bounds in fib6_nh_flush_exceptions
While running the self-tests on a KASAN enabled kernel, I observed a
slab-out-of-bounds splat very similar to the one reported in
commit
821bbf79fe46 ("ipv6: Fix KASAN: slab-out-of-bounds Read in
fib6_nh_flush_exceptions").
We additionally need to take care of fib6_metrics initialization
failure when the caller provides an nh.
The fix is similar, explicitly free the route instead of calling
fib6_info_release on a half-initialized object.
Fixes:
f88d8ea67fbdb ("ipv6: Plumb support for nexthop object in a fib6_info")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Maxim Kochetkov [Tue, 20 Jul 2021 05:08:38 +0000 (08:08 +0300)]
fsl/fman: Add fibre support
Set SUPPORTED_FIBRE to mac_dev->if_support. It allows proper usage of
PHYs with optical/fiber support.
Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Acked-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Peilin Ye [Mon, 19 Jul 2021 23:41:24 +0000 (16:41 -0700)]
net/sched: act_skbmod: Skip non-Ethernet packets
Currently tcf_skbmod_act() assumes that packets use Ethernet as their L2
protocol, which is not always the case. As an example, for CAN devices:
$ ip link add dev vcan0 type vcan
$ ip link set up vcan0
$ tc qdisc add dev vcan0 root handle 1: htb
$ tc filter add dev vcan0 parent 1: protocol ip prio 10 \
matchall action skbmod swap mac
Doing the above silently corrupts all the packets. Do not perform skbmod
actions for non-Ethernet packets.
Fixes:
86da71b57383 ("net_sched: Introduce skbmod action")
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Woudstra [Mon, 19 Jul 2021 18:23:57 +0000 (20:23 +0200)]
mt7530 mt7530_fdb_write only set ivl bit vid larger than 1
Fixes my earlier patch which broke vlan unaware bridges.
The IVL bit now only gets set for vid's larger than 1.
Fixes:
11d8d98cbeef ("mt7530 fix mt7530_fdb_write vid missing ivl bit")
Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 20 Jul 2021 14:00:45 +0000 (07:00 -0700)]
Merge branch 'octeon-DMAC'
Subbaraya Sundeep says:
====================
octeontx2-af: Introduce DMAC based switching
With this patch set packets can be switched between
all CGX mapped PFs and VFs in the system based on
the DMAC addresses. To implement this:
AF allocates high priority rules from top entry(0) in MCAM.
Rules are allocated for all the CGX mapped PFs and VFs though
they are not active and with no NIXLFs attached.
Rules for a PF/VF will be enabled only after they are brought up.
Two rules one for TX and one for RX are allocated for each PF/VF.
A packet sent from a PF/VF with a destination mac of another
PF/VF will be hit by TX rule and sent to LBK channel 63. The
same returned packet will be hit by RX rule whose action is
to forward packet to PF/VF with that destination mac.
Implementation of this for 98xx is tricky since there are
two NIX blocks and till now a PF/VF can install rule for
an NIX0/1 interface only if it is mapped to corresponding NIX0/1 block.
Hence Tx rules are modified such that TX interface in MCAM
entry can be either NIX0-TX or NIX1-TX.
Testing:
1. Create two VFs over PF1(on NIX0) and assign two VFs to two VMs
2. Assign ip addresses to two VFs in VMs and PF2(on NIX1) in host.
3. Assign static arp entries in two VMs and PF2.
4. Ping between VMs and host PF2.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski [Tue, 20 Jul 2021 11:12:50 +0000 (13:12 +0200)]
Merge branch 'net-hns3-fixes-for-net'
Guangbin Huang says:
====================
net: hns3: fixes for -net
This series includes some bugfixes for the HNS3 ethernet driver.
====================
Link: https://lore.kernel.org/r/1626685988-25869-1-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jian Shen [Mon, 19 Jul 2021 09:13:08 +0000 (17:13 +0800)]
net: hns3: fix rx VLAN offload state inconsistent issue
Currently, VF doesn't enable rx VLAN offload when initializating,
and PF does it for VFs. If user disable the rx VLAN offload for
VF with ethtool -K, and reload the VF driver, it may cause the
rx VLAN offload state being inconsistent between hardware and
software.
Fixes it by enabling rx VLAN offload when VF initializing.
Fixes:
e2cb1dec9779 ("net: hns3: Add HNS3 VF HCL(Hardware Compatibility Layer) Support")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jian Shen [Mon, 19 Jul 2021 09:13:07 +0000 (17:13 +0800)]
net: hns3: disable port VLAN filter when support function level VLAN filter control
For hardware limitation, port VLAN filter is port level, and
effective for all the functions of the port. So if not support
port VLAN bypass, it's necessary to disable the port VLAN filter,
in order to support function level VLAN filter control.
Fixes:
2ba306627f59 ("net: hns3: add support for modify VLAN filter state")
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Peng Li [Mon, 19 Jul 2021 09:13:06 +0000 (17:13 +0800)]
net: hns3: add match_id to check mailbox response from PF to VF
When VF need response from PF, VF will wait (1us - 1s) to receive
the response, or it will wait timeout and the VF action fails.
If VF do not receive response in 1st action because timeout,
the 2nd action may receive response for the 1st action, and get
incorrect response data.VF must reciveve the right response from
PF,or it will cause unexpected error.
This patch adds match_id to check mailbox response from PF to VF,
to make sure VF get the right response:
1. The message sent from VF was labelled with match_id which was a
unique 16-bit non-zero value.
2. The response sent from PF will label with match_id which got from
the request.
3. The VF uses the match_id to match request and response message.
This scheme depends on PF driver supports match_id, if PF driver doesn't
support then VF will uses the original scheme.
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Chengwen Feng [Mon, 19 Jul 2021 09:13:05 +0000 (17:13 +0800)]
net: hns3: fix possible mismatches resp of mailbox
Currently, the mailbox synchronous communication between VF and PF use
the following fields to maintain communication:
1. Origin_mbx_msg which was combined by message code and subcode, used
to match request and response.
2. Received_resp which means whether received response.
There may possible mismatches of the following situation:
1. VF sends message A with code=1 subcode=1.
2. PF was blocked about 500ms when processing the message A.
3. VF will detect message A timeout because it can't get the response
within 500ms.
4. VF sends message B with code=1 subcode=1 which equal message A.
5. PF processes the first message A and send the response message to
VF.
6. VF will identify the response matched the message B because the
code/subcode is the same. This will lead to mismatch of request and
response.
To fix the above bug, we use the following scheme:
1. The message sent from VF was labelled with match_id which was a
unique 16-bit non-zero value.
2. The response sent from PF will label with match_id which got from
the request.
3. The VF uses the match_id to match request and response message.
As for PF driver, it only needs to copy the match_id from request to
response.
Fixes:
dde1a86e93ca ("net: hns3: Add mailbox support to PF driver")
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Mon, 19 Jul 2021 09:39:16 +0000 (12:39 +0300)]
net: bridge: do not replay fdb entries pointing towards the bridge twice
This simple script:
ip link add br0 type bridge
ip link set swp2 master br0
ip link set br0 address 00:01:02:03:04:05
ip link del br0
produces this result on a DSA switch:
[ 421.306399] br0: port 1(swp2) entered blocking state
[ 421.311445] br0: port 1(swp2) entered disabled state
[ 421.472553] device swp2 entered promiscuous mode
[ 421.488986] device swp2 left promiscuous mode
[ 421.493508] br0: port 1(swp2) entered disabled state
[ 421.886107] sja1105 spi0.1: port 1 failed to delete 00:01:02:03:04:05 vid 1 from fdb: -ENOENT
[ 421.894374] sja1105 spi0.1: port 1 failed to delete 00:01:02:03:04:05 vid 0 from fdb: -ENOENT
[ 421.943982] br0: port 1(swp2) entered blocking state
[ 421.949030] br0: port 1(swp2) entered disabled state
[ 422.112504] device swp2 entered promiscuous mode
A very simplified view of what happens is:
(1) the bridge port is created, and the bridge device inherits its MAC
address
(2) when joining, the bridge port (DSA) requests a replay of the
addition of all FDB entries towards this bridge port and towards the
bridge device itself. In fact, DSA calls br_fdb_replay() twice:
br_fdb_replay(br, brport_dev);
br_fdb_replay(br, br);
DSA uses reference counting for the FDB entries. So the MAC address
of the bridge is simply kept with refcount 2. When the bridge port
leaves under normal circumstances, everything cancels out since the
replay of the FDB entry deletion is also done twice per VLAN.
(3) when the bridge MAC address changes, switchdev is notified of the
deletion of the old address and of the insertion of the new one.
But the old address does not really go away, since it had refcount
2, and the new address is added "only" with refcount 1.
(4) when the bridge port leaves now, it will replay a deletion of the
FDB entries pointing towards the bridge twice. Then DSA will
complain that it can't delete something that no longer exists.
It is clear that the problem is that the FDB entries towards the bridge
are replayed too many times, so let's fix that problem.
Fixes:
63c51453c82c ("net: dsa: replay the local bridge FDB entries pointing to the bridge dev too")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210719093916.4099032-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Landen Chao [Tue, 20 Jul 2021 03:50:07 +0000 (11:50 +0800)]
net: Update MAINTAINERS for MediaTek switch driver
Update maintainers for MediaTek switch driver with Deng Qingfang who has
contributed many high-quality patches (interrupt, VLAN, GPIO, and etc.)
and will help maintenance.
Signed-off-by: Landen Chao <landen.chao@mediatek.com>
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/49e1aa8aac58dcbf1b5e036d09b3fa3bbb1d94d0.1626751861.git.landen.chao@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Eric Dumazet [Mon, 19 Jul 2021 09:20:28 +0000 (02:20 -0700)]
net/tcp_fastopen: remove obsolete extern
After cited commit, sysctl_tcp_fastopen_blackhole_timeout is no longer
a global variable.
Fixes:
3733be14a32b ("ipv4: Namespaceify tcp_fastopen_blackhole_timeout knob")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Haishuang Yan <yanhaishuang@cmss.chinamobile.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Link: https://lore.kernel.org/r/20210719092028.3016745-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vasily Averin [Mon, 19 Jul 2021 07:55:14 +0000 (10:55 +0300)]
ipv6: ip6_finish_output2: set sk into newly allocated nskb
skb_set_owner_w() should set sk not to old skb but to new nskb.
Fixes:
5796015fa968 ("ipv6: allocate enough headroom in ip6_finish_output2()")
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Link: https://lore.kernel.org/r/70c0744f-89ae-1869-7e3e-4fa292158f4b@virtuozzo.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Subbaraya Sundeep [Mon, 19 Jul 2021 08:59:34 +0000 (14:29 +0530)]
octeontx2-af: Introduce internal packet switching
As of now any communication between CGXs PFs and
their VFs within the system is possible only by
external switches sending packets back to the
system. This patch adds internal switching support.
Broadcast packet replication is not covered here.
RVU admin function (AF) maintains MAC addresses
of all interfaces in the system. When switching is
enabled, MCAM entries are allocated to install rules
such that packets with DMAC matching any of the
internal interface MAC addresses is punted back
into the system via the loopback channel.
On the receive side the default unicast rules
are modified to not check for ingress channel.
So any packet with matching DMAC irrespective of
which interface it is coming from will be forwarded
to the respective PF/VF interface.
The transmit side rules and default unicast rules
are updated if user changes MAC address of an interface.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Subbaraya Sundeep [Mon, 19 Jul 2021 08:59:33 +0000 (14:29 +0530)]
octeontx2-af: Prepare for allocating MCAM rules for AF
AF till now only manages the allocation and freeing of
MCAM rules for other PF/VFs in system. To implement
L2 switching between all CGX mapped PF and VFs, AF
requires MCAM entries for DMAC rules for each PF and VF.
This patch modifies AF driver such that AF can also
allocate MCAM rules and install rules for other
PFs and VFs. All the checks like channel verification
for RX rules and PF_FUNC verification for TX rules are
relaxed in case AF is allocating or installing rules.
Also all the entry and counter to owner mappings are
set to NPC_MCAM_INVALID_MAP when they are free indicating
those are not allocated to AF nor PF/VFs.
This patch also ensures that AF allocated and installed
entries are displayed in debugfs.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Subbaraya Sundeep [Mon, 19 Jul 2021 08:59:32 +0000 (14:29 +0530)]
octeontx2-af: Enable transmit side LBK link
For enabling VF-VF switching the packets egressing
out of CGX mapped VFs needed to be sent to LBK
so that same packets are received back to the system.
But the LBK link also needs to be enabled in addition
to a VF's mapped CGX_LMAC link otherwise hardware
raises send error interrupt indicating selected LBK
link is not enabled in NIX_AF_TL3_TL2X_LINKX_CFG register.
Hence this patch enables all LBK links in
TL3_TL2_LINKX_CFG registers.
Also to enable packet flow between PFs/VFs of NIX0
to PFs/VFs of NIX1(in 98xx silicon) the NPC TX DMAC
rules has to be installed such that rules must be hit
for any TX interface i.e., NIX0-TX or NIX1-TX provided
DMAC match creteria is met. Hence this patch changes the
behavior such that MCAM is programmed to match with any
NIX0/1-TX interface for TX rules.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Mon, 19 Jul 2021 09:12:18 +0000 (02:12 -0700)]
net/tcp_fastopen: fix data races around tfo_active_disable_stamp
tfo_active_disable_stamp is read and written locklessly.
We need to annotate these accesses appropriately.
Then, we need to perform the atomic_inc(tfo_active_disable_times)
after the timestamp has been updated, and thus add barriers
to make sure tcp_fastopen_active_should_disable() wont read
a stale timestamp.
Fixes:
cf1ef3f0719b ("net/tcp_fastopen: Disable active side TFO in certain scenarios")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Wei Wang <weiwan@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 19 Jul 2021 17:08:06 +0000 (10:08 -0700)]
Merge branch 'dt-bindinga-dwmac'
Joakim Zhang says:
====================
dt-bindings: net: dwmac-imx: convert
This patch set intends to convert imx dwmac binding to schema, and fixes
found by dt_binding_check and dtbs_check.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Joakim Zhang [Mon, 19 Jul 2021 07:18:21 +0000 (15:18 +0800)]
arm64: dts: imx8mp: change interrupt order per dt-binding
This patch changs interrupt order which found by dtbs_check.
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
arch/arm64/boot/dts/freescale/imx8mp-evk.dt.yaml: ethernet@
30bf0000: interrupt-names:0: 'macirq' was expected
arch/arm64/boot/dts/freescale/imx8mp-evk.dt.yaml: ethernet@
30bf0000: interrupt-names:1: 'eth_wake_irq' was expected
According to Documentation/devicetree/bindings/net/snps,dwmac.yaml, we
should list interrupt in it's order.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Joakim Zhang [Mon, 19 Jul 2021 07:18:20 +0000 (15:18 +0800)]
dt-bindings: net: imx-dwmac: convert imx-dwmac bindings to yaml
In order to automate the verification of DT nodes covert imx-dwmac to
nxp,dwmac-imx.yaml, and pass below checking.
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dtbs_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Joakim Zhang [Mon, 19 Jul 2021 07:18:19 +0000 (15:18 +0800)]
dt-bindings: net: snps,dwmac: add missing DWMAC IP version
Add missing DWMAC IP version in snps,dwmac.yaml which found by below
command, as NXP i.MX8 families support SNPS DWMAC 5.10a IP.
$ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- dt_binding_check DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/nxp,dwmac-imx.yaml
Documentation/devicetree/bindings/net/nxp,dwmac-imx.example.dt.yaml:
ethernet@
30bf0000: compatible: None of ['nxp,imx8mp-dwmac-eqos', 'snps,dwmac-5.10a'] are valid under the given schema
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Sun, 18 Jul 2021 20:38:34 +0000 (13:38 -0700)]
net: hisilicon: rename CACHE_LINE_MASK to avoid redefinition
Building on ARCH=arc causes a "redefined" warning, so rename this
driver's CACHE_LINE_MASK to avoid the warning.
../drivers/net/ethernet/hisilicon/hip04_eth.c:134: warning: "CACHE_LINE_MASK" redefined
134 | #define CACHE_LINE_MASK 0x3F
In file included from ../include/linux/cache.h:6,
from ../include/linux/printk.h:9,
from ../include/linux/kernel.h:19,
from ../include/linux/list.h:9,
from ../include/linux/module.h:12,
from ../drivers/net/ethernet/hisilicon/hip04_eth.c:7:
../arch/arc/include/asm/cache.h:17: note: this is the location of the previous definition
17 | #define CACHE_LINE_MASK (~(L1_CACHE_BYTES - 1))
Fixes:
d413779cdd93 ("net: hisilicon: Add an tx_desc to adapt HI13X1_GMAC")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 19 Jul 2021 15:50:35 +0000 (08:50 -0700)]
Merge branch 'bnxt_en-fixes'
Michael Chan says:
====================
bnxt_en: Bug fixes
Most of the fixes in this series have to do with error recovery. They
include error path handling when the error recovery has to abort, and
the rediscovery of capabilities (PTP and RoCE) after firmware reset
that may result in capability changes.
Two other fixes are to reject invalid ETS settings and to validate
VLAN protocol in the RX path.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Sun, 18 Jul 2021 19:36:33 +0000 (15:36 -0400)]
bnxt_en: Fix PTP capability discovery
The current PTP initialization logic does not account for firmware
reset that may cause PTP capability to change. The valid pointer
bp->ptp_cfg is used to indicate that the device is capable of PTP
and that it has been initialized. So we must clean up bp->ptp_cfg
and free it if the firmware after reset does not support PTP.
Fixes:
93cb62d98e9c ("bnxt_en: Enable hardware PTP support")
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Sun, 18 Jul 2021 19:36:32 +0000 (15:36 -0400)]
bnxt_en: Move bnxt_ptp_init() to bnxt_open()
The device needs to be in ifup state for PTP to function, so move
bnxt_ptp_init() to bnxt_open(). This means that the PHC will be
registered during bnxt_open().
This also makes firmware reset work correctly. PTP configurations
may change after firmware upgrade or downgrade. bnxt_open() will
be called after firmware reset, so it will work properly.
bnxt_ptp_start() is now incorporated into bnxt_ptp_init(). We now
also need to call bnxt_ptp_clear() in bnxt_close().
Fixes:
93cb62d98e9c ("bnxt_en: Enable hardware PTP support")
Cc: Richard Cochran <richardcochran@gmail.com>
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Somnath Kotur [Sun, 18 Jul 2021 19:36:31 +0000 (15:36 -0400)]
bnxt_en: Check abort error state in bnxt_half_open_nic()
bnxt_half_open_nic() is called during during ethtool self test and is
protected by rtnl_lock. Firmware reset can be happening at the same
time. Only critical portions of the entire firmware reset sequence
are protected by the rtnl_lock. It is possible that bnxt_half_open_nic()
can be called when the firmware reset sequence is aborting. In that
case, bnxt_half_open_nic() needs to check if the ABORT_ERR flag is set
and abort if it is. The ethtool self test will fail but the NIC will be
brought to a consistent IF_DOWN state.
Without this patch, if bnxt_half_open_nic() were to continue in this
error state, it may crash like this:
bnxt_en 0000:82:00.1 enp130s0f1np1: FW reset in progress during close, FW reset will be aborted
Unable to handle kernel NULL pointer dereference at virtual address
0000000000000000
...
Process ethtool (pid: 333327, stack limit = 0x0000000046476577)
Call trace:
bnxt_alloc_mem+0x444/0xef0 [bnxt_en]
bnxt_half_open_nic+0x24/0xb8 [bnxt_en]
bnxt_self_test+0x2dc/0x390 [bnxt_en]
ethtool_self_test+0xe0/0x1f8
dev_ethtool+0x1744/0x22d0
dev_ioctl+0x190/0x3e0
sock_ioctl+0x238/0x480
do_vfs_ioctl+0xc4/0x758
ksys_ioctl+0x84/0xb8
__arm64_sys_ioctl+0x28/0x38
el0_svc_handler+0xb0/0x180
el0_svc+0x8/0xc
Fixes:
a1301f08c5ac ("bnxt_en: Check abort error state in bnxt_open_nic().")
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Sun, 18 Jul 2021 19:36:30 +0000 (15:36 -0400)]
bnxt_en: Validate vlan protocol ID on RX packets
Only pass supported VLAN protocol IDs for stripped VLAN tags to the
stack. The stack will hit WARN() if the protocol ID is unsupported.
Existing firmware sets up the chip to strip 0x8100, 0x88a8, 0x9100.
Only the 1st two protocols are supported by the kernel.
Fixes:
a196e96bb68f ("bnxt_en: clean up VLAN feature bit handling")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Somnath Kotur [Sun, 18 Jul 2021 19:36:29 +0000 (15:36 -0400)]
bnxt_en: fix error path of FW reset
When bnxt_open() fails in the firmware reset path, the driver needs to
gracefully abort, but it is executing code that should be invoked only
in the success path. Define a function to abort FW reset and
consolidate all error paths to call this new function.
Fixes:
dab62e7c2de7 ("bnxt_en: Implement faster recovery for firmware fatal error.")
Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Sun, 18 Jul 2021 19:36:28 +0000 (15:36 -0400)]
bnxt_en: Add missing check for BNXT_STATE_ABORT_ERR in bnxt_fw_rset_task()
In the BNXT_FW_RESET_STATE_POLL_VF state in bnxt_fw_reset_task() after all
VFs have unregistered, we need to check for BNXT_STATE_ABORT_ERR after
we acquire the rtnl_lock. If the flag is set, we need to abort.
Fixes:
230d1f0de754 ("bnxt_en: Handle firmware reset.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Chan [Sun, 18 Jul 2021 19:36:27 +0000 (15:36 -0400)]
bnxt_en: Refresh RoCE capabilities in bnxt_ulp_probe()
The capabilities can change after firmware upgrade/downgrade, so we
should get the up-to-date RoCE capabilities everytime bnxt_ulp_probe()
is called.
Fixes:
2151fe0830fd ("bnxt_en: Handle RESET_NOTIFY async event from firmware.")
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Edwin Peer [Sun, 18 Jul 2021 19:36:26 +0000 (15:36 -0400)]
bnxt_en: reject ETS settings that will starve a TC
ETS proportions are presented to HWRM_QUEUE_COS2BW_CFG as minimum
bandwidth constraints. Thus, zero is a legal value for a given TC.
However, if all the other TCs sum up to 100%, then at least one
hardware queue will starve, resulting in guaranteed TX timeouts.
Reject such nonsensical configurations.
Reviewed-by: Pavan Chebbi <pavan.chebbi@broadcom.com>
Signed-off-by: Edwin Peer <edwin.peer@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kalesh AP [Sun, 18 Jul 2021 19:36:25 +0000 (15:36 -0400)]
bnxt_en: don't disable an already disabled PCI device
If device is already disabled in reset path and PCI io error is
detected before the device could be enabled, driver could
call pci_disable_device() for already disabled device. Fix this
problem by calling pci_disable_device() only if the device is already
enabled.
Fixes:
6316ea6db93d ("bnxt_en: Enable AER support.")
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nguyen Dinh Phi [Sun, 18 Jul 2021 14:40:13 +0000 (22:40 +0800)]
netrom: Decrease sock refcount when sock timers expire
Commit
63346650c1a9 ("netrom: switch to sock timer API") switched to use
sock timer API. It replaces mod_timer() by sk_reset_timer(), and
del_timer() by sk_stop_timer().
Function sk_reset_timer() will increase the refcount of sock if it is
called on an inactive timer, hence, in case the timer expires, we need to
decrease the refcount ourselves in the handler, otherwise, the sock
refcount will be unbalanced and the sock will never be freed.
Signed-off-by: Nguyen Dinh Phi <phind.uet@gmail.com>
Reported-by: syzbot+10f1194569953b72f1ae@syzkaller.appspotmail.com
Fixes:
63346650c1a9 ("netrom: switch to sock timer API")
Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Sat, 17 Jul 2021 21:19:19 +0000 (17:19 -0400)]
sctp: trim optlen when it's a huge value in sctp_setsockopt
After commit
ca84bd058dae ("sctp: copy the optval from user space in
sctp_setsockopt"), it does memory allocation in sctp_setsockopt with
the optlen, and it would fail the allocation and return error if the
optlen from user space is a huge value.
This breaks some sockopts, like SCTP_HMAC_IDENT, SCTP_RESET_STREAMS and
SCTP_AUTH_KEY, as when processing these sockopts before, optlen would
be trimmed to a biggest value it needs when optlen is a huge value,
instead of failing the allocation and returning error.
This patch is to fix the allocation failure when it's a huge optlen from
user space by trimming it to the biggest size sctp sockopt may need when
necessary, and this biggest size is from sctp_setsockopt_reset_streams()
for SCTP_RESET_STREAMS, which is bigger than those for SCTP_HMAC_IDENT
and SCTP_AUTH_KEY.
Fixes:
ca84bd058dae ("sctp: copy the optval from user space in sctp_setsockopt")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Skripkin [Sat, 17 Jul 2021 11:29:33 +0000 (14:29 +0300)]
net: sched: fix memory leak in tcindex_partial_destroy_work
Syzbot reported memory leak in tcindex_set_parms(). The problem was in
non-freed perfect hash in tcindex_partial_destroy_work().
In tcindex_set_parms() new tcindex_data is allocated and some fields from
old one are copied to new one, but not the perfect hash. Since
tcindex_partial_destroy_work() is the destroy function for old
tcindex_data, we need to free perfect hash to avoid memory leak.
Reported-and-tested-by: syzbot+f0bbb2287b8993d4fa74@syzkaller.appspotmail.com
Fixes:
331b72922c5f ("net: sched: RCU cls_tcindex")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pravin B Shelar [Thu, 15 Jul 2021 23:59:00 +0000 (16:59 -0700)]
net: Fix zero-copy head len calculation.
In some cases skb head could be locked and entire header
data is pulled from skb. When skb_zerocopy() called in such cases,
following BUG is triggered. This patch fixes it by copying entire
skb in such cases.
This could be optimized incase this is performance bottleneck.
---8<---
kernel BUG at net/core/skbuff.c:2961!
invalid opcode: 0000 [#1] SMP PTI
CPU: 2 PID: 0 Comm: swapper/2 Tainted: G OE 5.4.0-77-generic #86-Ubuntu
Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.13.0-1ubuntu1.1 04/01/2014
RIP: 0010:skb_zerocopy+0x37a/0x3a0
RSP: 0018:
ffffbcc70013ca38 EFLAGS:
00010246
Call Trace:
<IRQ>
queue_userspace_packet+0x2af/0x5e0 [openvswitch]
ovs_dp_upcall+0x3d/0x60 [openvswitch]
ovs_dp_process_packet+0x125/0x150 [openvswitch]
ovs_vport_receive+0x77/0xd0 [openvswitch]
netdev_port_receive+0x87/0x130 [openvswitch]
netdev_frame_hook+0x4b/0x60 [openvswitch]
__netif_receive_skb_core+0x2b4/0xc90
__netif_receive_skb_one_core+0x3f/0xa0
__netif_receive_skb+0x18/0x60
process_backlog+0xa9/0x160
net_rx_action+0x142/0x390
__do_softirq+0xe1/0x2d6
irq_exit+0xae/0xb0
do_IRQ+0x5a/0xf0
common_interrupt+0xf/0xf
Code that triggered BUG:
int
skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len, int hlen)
{
int i, j = 0;
int plen = 0; /* length of skb->head fragment */
int ret;
struct page *page;
unsigned int offset;
BUG_ON(!from->head_frag && !hlen);
Signed-off-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mahesh Bandewar [Fri, 16 Jul 2021 23:09:41 +0000 (16:09 -0700)]
bonding: fix build issue
The commit
9a5605505d9c (" bonding: Add struct bond_ipesc to manage SA") is causing
following build error when XFRM is not selected in kernel config.
lld: error: undefined symbol: xfrm_dev_state_flush
>>> referenced by bond_main.c:3453 (drivers/net/bonding/bond_main.c:3453)
>>> net/bonding/bond_main.o:(bond_netdev_event) in archive drivers/built-in.a
Fixes:
9a5605505d9c (" bonding: Add struct bond_ipesc to manage SA")
Signed-off-by: Mahesh Bandewar <maheshb@google.com>
CC: Taehee Yoo <ap420073@gmail.com>
CC: Jay Vosburgh <jay.vosburgh@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yajun Deng [Wed, 14 Jul 2021 09:13:20 +0000 (17:13 +0800)]
net: decnet: Fix sleeping inside in af_decnet
The release_sock() is blocking function, it would change the state
after sleeping. use wait_woken() instead.
Fixes:
1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Woudstra [Fri, 16 Jul 2021 15:36:39 +0000 (17:36 +0200)]
mt7530 fix mt7530_fdb_write vid missing ivl bit
According to reference guides mt7530 (mt7620) and mt7531:
NOTE: When IVL is reset, MAC[47:0] and FID[2:0] will be used to
read/write the address table. When IVL is set, MAC[47:0] and CVID[11:0]
will be used to read/write the address table.
Since the function only fills in CVID and no FID, we need to set the
IVL bit. The existing code does not set it.
This is a fix for the issue I dropped here earlier:
http://lists.infradead.org/pipermail/linux-mediatek/2021-June/025697.html
With this patch, it is now possible to delete the 'self' fdb entry
manually. However, wifi roaming still has the same issue, the entry
does not get deleted automatically. Wifi roaming also needs a fix
somewhere else to function correctly in combination with vlan.
Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ilias Apalodimas [Fri, 16 Jul 2021 07:02:18 +0000 (10:02 +0300)]
skbuff: Fix a potential race while recycling page_pool packets
As Alexander points out, when we are trying to recycle a cloned/expanded
SKB we might trigger a race. The recycling code relies on the
pp_recycle bit to trigger, which we carry over to cloned SKBs.
If that cloned SKB gets expanded or if we get references to the frags,
call skb_release_data() and overwrite skb->head, we are creating separate
instances accessing the same page frags. Since the skb_release_data()
will first try to recycle the frags, there's a potential race between
the original and cloned SKB, since both will have the pp_recycle bit set.
Fix this by explicitly those SKBs not recyclable.
The atomic_sub_return effectively limits us to a single release case,
and when we are calling skb_release_data we are also releasing the
option to perform the recycling, or releasing the pages from the page pool.
Fixes:
6a5bcd84e886 ("page_pool: Allow drivers to hint on SKB recycling")
Reported-by: Alexander Duyck <alexanderduyck@fb.com>
Suggested-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 15 Jul 2021 21:39:45 +0000 (14:39 -0700)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf
Andrii Nakryiko says:
====================
pull-request: bpf 2021-07-15
The following pull-request contains BPF updates for your *net* tree.
We've added 9 non-merge commits during the last 5 day(s) which contain
a total of 9 files changed, 37 insertions(+), 15 deletions(-).
The main changes are:
1) Fix NULL pointer dereference in BPF_TEST_RUN for BPF_XDP_DEVMAP and
BPF_XDP_CPUMAP programs, from Xuan Zhuo.
2) Fix use-after-free of net_device in XDP bpf_link, from Xuan Zhuo.
3) Follow-up fix to subprog poke descriptor use-after-free problem, from
Daniel Borkmann and John Fastabend.
4) Fix out-of-range array access in s390 BPF JIT backend, from Colin Ian King.
5) Fix memory leak in BPF sockmap, from John Fastabend.
6) Fix for sockmap to prevent proc stats reporting bug, from John Fastabend
and Jakub Sitnicki.
7) Fix NULL pointer dereference in bpftool, from Tobias Klauser.
8) AF_XDP documentation fixes, from Baruch Siach.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Dongliang Mu [Wed, 14 Jul 2021 09:13:22 +0000 (17:13 +0800)]
usb: hso: fix error handling code of hso_create_net_device
The current error handling code of hso_create_net_device is
hso_free_net_device, no matter which errors lead to. For example,
WARNING in hso_free_net_device [1].
Fix this by refactoring the error handling code of
hso_create_net_device by handling different errors by different code.
[1] https://syzkaller.appspot.com/bug?id=
66eff8d49af1b28370ad342787413e35bbe76efe
Reported-by: syzbot+44d53c7255bb1aea22d2@syzkaller.appspotmail.com
Fixes:
5fcfb6d0bfcd ("hso: fix bailout in error case of probe")
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jia He [Thu, 15 Jul 2021 08:08:21 +0000 (16:08 +0800)]
qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()
Liajian reported a bug_on hit on a ThunderX2 arm64 server with FastLinQ
QL41000 ethernet controller:
BUG: scheduling while atomic: kworker/0:4/531/0x00000200
[qed_probe:488()]hw prepare failed
kernel BUG at mm/vmalloc.c:2355!
Internal error: Oops - BUG: 0 [#1] SMP
CPU: 0 PID: 531 Comm: kworker/0:4 Tainted: G W 5.4.0-77-generic #86-Ubuntu
pstate:
00400009 (nzcv daif +PAN -UAO)
Call trace:
vunmap+0x4c/0x50
iounmap+0x48/0x58
qed_free_pci+0x60/0x80 [qed]
qed_probe+0x35c/0x688 [qed]
__qede_probe+0x88/0x5c8 [qede]
qede_probe+0x60/0xe0 [qede]
local_pci_probe+0x48/0xa0
work_for_cpu_fn+0x24/0x38
process_one_work+0x1d0/0x468
worker_thread+0x238/0x4e0
kthread+0xf0/0x118
ret_from_fork+0x10/0x18
In this case, qed_hw_prepare() returns error due to hw/fw error, but in
theory work queue should be in process context instead of interrupt.
The root cause might be the unpaired spin_{un}lock_bh() in
_qed_mcp_cmd_and_union(), which causes botton half is disabled incorrectly.
Reported-by: Lijian Zhang <Lijian.Zhang@arm.com>
Signed-off-by: Jia He <justin.he@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ziyang Xuan [Thu, 15 Jul 2021 12:22:04 +0000 (20:22 +0800)]
net: fix uninit-value in caif_seqpkt_sendmsg
When nr_segs equal to zero in iovec_from_user, the object
msg->msg_iter.iov is uninit stack memory in caif_seqpkt_sendmsg
which is defined in ___sys_sendmsg. So we cann't just judge
msg->msg_iter.iov->base directlly. We can use nr_segs to judge
msg in caif_seqpkt_sendmsg whether has data buffers.
=====================================================
BUG: KMSAN: uninit-value in caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1c9/0x220 lib/dump_stack.c:118
kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
caif_seqpkt_sendmsg+0x693/0xf60 net/caif/caif_socket.c:542
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0x12b6/0x1350 net/socket.c:2343
___sys_sendmsg net/socket.c:2397 [inline]
__sys_sendmmsg+0x808/0xc90 net/socket.c:2480
__compat_sys_sendmmsg net/compat.c:656 [inline]
Reported-by: syzbot+09a5d591c1f98cf5efcb@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?id=1ace85e8fc9b0d5a45c08c2656c3e91762daa9b8
Fixes:
bece7b2398d0 ("caif: Rewritten socket implementation")
Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Tobias Klauser [Thu, 15 Jul 2021 11:06:09 +0000 (13:06 +0200)]
bpftool: Check malloc return value in mount_bpffs_for_pin
Fix and add a missing NULL check for the prior malloc() call.
Fixes:
49a086c201a9 ("bpftool: implement prog load command")
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Roman Gushchin <guro@fb.com>
Link: https://lore.kernel.org/bpf/20210715110609.29364-1-tklauser@distanz.ch
Jakub Sitnicki [Wed, 14 Jul 2021 15:47:50 +0000 (17:47 +0200)]
bpf, sockmap, udp: sk_prot needs inuse_idx set for proc stats
The proc socket stats use sk_prot->inuse_idx value to record inuse sock
stats. We currently do not set this correctly from sockmap side. The
result is reading sock stats '/proc/net/sockstat' gives incorrect values.
The socket counter is incremented correctly, but because we don't set the
counter correctly when we replace sk_prot we may omit the decrement.
To get the correct inuse_idx value move the core_initcall that initializes
the UDP proto handlers to late_initcall. This way it is initialized after
UDP has the chance to assign the inuse_idx value from the register protocol
handler.
Fixes:
edc6741cc660 ("bpf: Add sockmap hooks for UDP sockets")
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210714154750.528206-1-jakub@cloudflare.com
John Fastabend [Mon, 12 Jul 2021 19:55:46 +0000 (12:55 -0700)]
bpf, sockmap, tcp: sk_prot needs inuse_idx set for proc stats
The proc socket stats use sk_prot->inuse_idx value to record inuse sock
stats. We currently do not set this correctly from sockmap side. The
result is reading sock stats '/proc/net/sockstat' gives incorrect values.
The socket counter is incremented correctly, but because we don't set the
counter correctly when we replace sk_prot we may omit the decrement.
To get the correct inuse_idx value move the core_initcall that initializes
the TCP proto handlers to late_initcall. This way it is initialized after
TCP has the chance to assign the inuse_idx value from the register protocol
handler.
Fixes:
604326b41a6fb ("bpf, sockmap: convert to generic sk_msg interface")
Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Link: https://lore.kernel.org/bpf/20210712195546.423990-3-john.fastabend@gmail.com
John Fastabend [Mon, 12 Jul 2021 19:55:45 +0000 (12:55 -0700)]
bpf, sockmap: Fix potential memory leak on unlikely error case
If skb_linearize is needed and fails we could leak a msg on the error
handling. To fix ensure we kfree the msg block before returning error.
Found during code review.
Fixes:
4363023d2668e ("bpf, sockmap: Avoid failures from skb_to_sgvec when skb has frag_list")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Link: https://lore.kernel.org/bpf/20210712195546.423990-2-john.fastabend@gmail.com
Colin Ian King [Thu, 15 Jul 2021 12:57:12 +0000 (13:57 +0100)]
s390/bpf: Perform r1 range checking before accessing jit->seen_reg[r1]
Currently array jit->seen_reg[r1] is being accessed before the range
checking of index r1. The range changing on r1 should be performed
first since it will avoid any potential out-of-range accesses on the
array seen_reg[] and also it is more optimal to perform checks on r1
before fetching data from the array. Fix this by swapping the order
of the checks before the array access.
Fixes:
054623105728 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/bpf/20210715125712.24690-1-colin.king@canonical.com
Qitao Xu [Thu, 15 Jul 2021 06:03:24 +0000 (23:03 -0700)]
net_sched: introduce tracepoint trace_qdisc_enqueue()
Tracepoint trace_qdisc_enqueue() is introduced to trace skb at
the entrance of TC layer on TX side. This is similar to
trace_qdisc_dequeue():
1. For both we only trace successful cases. The failure cases
can be traced via trace_kfree_skb().
2. They are called at entrance or exit of TC layer, not for each
->enqueue() or ->dequeue(). This is intentional, because
we want to make trace_qdisc_enqueue() symmetric to
trace_qdisc_dequeue(), which is easier to use.
The return value of qdisc_enqueue() is not interesting here,
we have Qdisc's drop packets in ->dequeue(), it is impossible to
trace them even if we have the return value, the only way to trace
them is tracing kfree_skb().
We only add information we need to trace ring buffer. If any other
information is needed, it is easy to extend it without breaking ABI,
see commit
3dd344ea84e1 ("net: tracepoint: exposing sk_family in all
tcp:tracepoints").
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Qitao Xu <qitao.xu@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Qitao Xu [Thu, 15 Jul 2021 06:00:21 +0000 (23:00 -0700)]
net_sched: use %px to print skb address in trace_qdisc_dequeue()
Print format of skbaddr is changed to %px from %p, because we want
to use skb address as a quick way to identify a packet.
Note, trace ring buffer is only accessible to privileged users,
it is safe to use a real kernel address here.
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Qitao Xu <qitao.xu@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Qitao Xu [Thu, 15 Jul 2021 05:59:23 +0000 (22:59 -0700)]
net: use %px to print skb address in trace_netif_receive_skb
The print format of skb adress in tracepoint class net_dev_template
is changed to %px from %p, because we want to use skb address
as a quick way to identify a packet.
Note, trace ring buffer is only accessible to privileged users,
it is safe to use a real kernel address here.
Reviewed-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Qitao Xu <qitao.xu@bytedance.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Wed, 14 Jul 2021 15:23:43 +0000 (16:23 +0100)]
liquidio: Fix unintentional sign extension issue on left shift of u16
Shifting the u16 integer oct->pcie_port by CN23XX_PKT_INPUT_CTL_MAC_NUM_POS
(29) bits will be promoted to a 32 bit signed int and then sign-extended
to a u64. In the cases where oct->pcie_port where bit 2 is set (e.g. 3..7)
the shifted value will be sign extended and the top 32 bits of the result
will be set.
Fix this by casting the u16 values to a u64 before the 29 bit left shift.
Addresses-Coverity: ("Unintended sign extension")
Fixes:
3451b97cce2d ("liquidio: CN23XX register setup")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Geert Uytterhoeven [Wed, 14 Jul 2021 09:58:12 +0000 (11:58 +0200)]
net: dsa: mv88e6xxx: NET_DSA_MV88E6XXX_PTP should depend on NET_DSA_MV88E6XXX
Making global2 support mandatory removed the Kconfig symbol
NET_DSA_MV88E6XXX_GLOBAL2. This symbol also served as an intermediate
symbol to make NET_DSA_MV88E6XXX_PTP depend on NET_DSA_MV88E6XXX. With
the symbol removed, the user is always asked about PTP support for
Marvell 88E6xxx switches, even if the latter support is not enabled.
Fix this by reinstating the dependency.
Fixes:
63368a7416df144b ("net: dsa: mv88e6xxx: Make global2 support mandatory")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 14 Jul 2021 21:57:55 +0000 (14:57 -0700)]
Merge branch 'r8152-pm-fixxes'
Takashi Iwai says:
====================
r8152: Fix a couple of PM problems
it seems that r8152 driver suffers from the deadlock at both runtime
and system PM. Formerly, it was seen more often at hibernation
resume, but now it's triggered more frequently, as reported in SUSE
Bugzilla:
https://bugzilla.suse.com/show_bug.cgi?id=1186194
While debugging the problem, I stumbled on a few obvious bugs and here
is the results with two patches for addressing the resume problem.
***
However, the story doesn't end here, unfortunately, and those patches
don't seem sufficing. The rest major problem is that the driver calls
napi_disable() and napi_enable() in the PM suspend callbacks. This
makes the system stalling at (runtime-)suspend. If we drop
napi_disable() and napi_enable() calls in the PM suspend callbacks, it
starts working (that was the result in Bugzilla comment 13):
https://bugzilla.suse.com/show_bug.cgi?id=1186194#c13
So, my patches aren't enough and we still need to investigate
further. It'd be appreciated if anyone can give a fix or a hint for
more debugging. The usage of napi_disable() at PM callbacks is unique
in this driver and looks rather suspicious to me; but I'm no expert in
this area so I might be wrong...
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Takashi Iwai [Wed, 14 Jul 2021 17:00:22 +0000 (19:00 +0200)]
r8152: Fix a deadlock by doubly PM resume
r8152 driver sets up the MAC address at reset-resume, while
rtl8152_set_mac_address() has the temporary autopm get/put. This may
lead to a deadlock as the PM lock has been already taken for the
execution of the runtime PM callback.
This patch adds the workaround to avoid the superfluous autpm when
called from rtl8152_reset_resume().
Link: https://bugzilla.suse.com/show_bug.cgi?id=1186194
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Takashi Iwai [Wed, 14 Jul 2021 17:00:21 +0000 (19:00 +0200)]
r8152: Fix potential PM refcount imbalance
rtl8152_close() takes the refcount via usb_autopm_get_interface() but
it doesn't release when RTL8152_UNPLUG test hits. This may lead to
the imbalance of PM refcount. This patch addresses it.
Link: https://bugzilla.suse.com/show_bug.cgi?id=1186194
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 14 Jul 2021 16:24:32 +0000 (09:24 -0700)]
Merge tag 'net-5.14-rc2' of git://git./linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski.
"Including fixes from bpf and netfilter.
Current release - regressions:
- sock: fix parameter order in sock_setsockopt()
Current release - new code bugs:
- netfilter: nft_last:
- fix incorrect arithmetic when restoring last used
- honor NFTA_LAST_SET on restoration
Previous releases - regressions:
- udp: properly flush normal packet at GRO time
- sfc: ensure correct number of XDP queues; don't allow enabling the
feature if there isn't sufficient resources to Tx from any CPU
- dsa: sja1105: fix address learning getting disabled on the CPU port
- mptcp: addresses a rmem accounting issue that could keep packets in
subflow receive buffers longer than necessary, delaying MPTCP-level
ACKs
- ip_tunnel: fix mtu calculation for ETHER tunnel devices
- do not reuse skbs allocated from skbuff_fclone_cache in the napi
skb cache, we'd try to return them to the wrong slab cache
- tcp: consistently disable header prediction for mptcp
Previous releases - always broken:
- bpf: fix subprog poke descriptor tracking use-after-free
- ipv6:
- allocate enough headroom in ip6_finish_output2() in case
iptables TEE is used
- tcp: drop silly ICMPv6 packet too big messages to avoid
expensive and pointless lookups (which may serve as a DDOS
vector)
- make sure fwmark is copied in SYNACK packets
- fix 'disable_policy' for forwarded packets (align with IPv4)
- netfilter: conntrack:
- do not renew entry stuck in tcp SYN_SENT state
- do not mark RST in the reply direction coming after SYN packet
for an out-of-sync entry
- mptcp: cleanly handle error conditions with MP_JOIN and syncookies
- mptcp: fix double free when rejecting a join due to port mismatch
- validate lwtstate->data before returning from skb_tunnel_info()
- tcp: call sk_wmem_schedule before sk_mem_charge in zerocopy path
- mt76: mt7921: continue to probe driver when fw already downloaded
- bonding: fix multiple issues with offloading IPsec to (thru?) bond
- stmmac: ptp: fix issues around Qbv support and setting time back
- bcmgenet: always clear wake-up based on energy detection
Misc:
- sctp: move 198 addresses from unusable to private scope
- ptp: support virtual clocks and timestamping
- openvswitch: optimize operation for key comparison"
* tag 'net-5.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (158 commits)
net: dsa: properly check for the bridge_leave methods in dsa_switch_bridge_leave()
sfc: add logs explaining XDP_TX/REDIRECT is not available
sfc: ensure correct number of XDP queues
sfc: fix lack of XDP TX queues - error XDP TX failed (-22)
net: fddi: fix UAF in fza_probe
net: dsa: sja1105: fix address learning getting disabled on the CPU port
net: ocelot: fix switchdev objects synced for wrong netdev with LAG offload
net: Use nlmsg_unicast() instead of netlink_unicast()
octeontx2-pf: Fix uninitialized boolean variable pps
ipv6: allocate enough headroom in ip6_finish_output2()
net: hdlc: rename 'mod_init' & 'mod_exit' functions to be module-specific
net: bridge: multicast: fix MRD advertisement router port marking race
net: bridge: multicast: fix PIM hello router port marking race
net: phy: marvell10g: fix differentiation of 88X3310 from 88X3340
dsa: fix for_each_child.cocci warnings
virtio_net: check virtqueue_add_sgs() return value
mptcp: properly account bulk freed memory
selftests: mptcp: fix case multiple subflows limited by server
mptcp: avoid processing packet if a subflow reset
mptcp: fix syncookie process if mptcp can not_accept new subflow
...
Christian Brauner [Wed, 14 Jul 2021 13:47:50 +0000 (15:47 +0200)]
fs: add vfs_parse_fs_param_source() helper
Add a simple helper that filesystems can use in their parameter parser
to parse the "source" parameter. A few places open-coded this function
and that already caused a bug in the cgroup v1 parser that we fixed.
Let's make it harder to get this wrong by introducing a helper which
performs all necessary checks.
Link: https://syzkaller.appspot.com/bug?id=6312526aba5beae046fdae8f00399f87aab48b12
Cc: Christoph Hellwig <hch@lst.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Christian Brauner [Wed, 14 Jul 2021 13:47:49 +0000 (15:47 +0200)]
cgroup: verify that source is a string
The following sequence can be used to trigger a UAF:
int fscontext_fd = fsopen("cgroup");
int fd_null = open("/dev/null, O_RDONLY);
int fsconfig(fscontext_fd, FSCONFIG_SET_FD, "source", fd_null);
close_range(3, ~0U, 0);
The cgroup v1 specific fs parser expects a string for the "source"
parameter. However, it is perfectly legitimate to e.g. specify a file
descriptor for the "source" parameter. The fs parser doesn't know what
a filesystem allows there. So it's a bug to assume that "source" is
always of type fs_value_is_string when it can reasonably also be
fs_value_is_file.
This assumption in the cgroup code causes a UAF because struct
fs_parameter uses a union for the actual value. Access to that union is
guarded by the param->type member. Since the cgroup paramter parser
didn't check param->type but unconditionally moved param->string into
fc->source a close on the fscontext_fd would trigger a UAF during
put_fs_context() which frees fc->source thereby freeing the file stashed
in param->file causing a UAF during a close of the fd_null.
Fix this by verifying that param->type is actually a string and report
an error if not.
In follow up patches I'll add a new generic helper that can be used here
and by other filesystems instead of this error-prone copy-pasta fix.
But fixing it in here first makes backporting a it to stable a lot
easier.
Fixes:
8d2451f4994f ("cgroup1: switch to option-by-option parsing")
Reported-by: syzbot+283ce5a46486d6acdbaf@syzkaller.appspotmail.com
Cc: Christoph Hellwig <hch@lst.de>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: <stable@kernel.org>
Cc: syzkaller-bugs <syzkaller-bugs@googlegroups.com>
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Vladimir Oltean [Tue, 13 Jul 2021 09:40:21 +0000 (12:40 +0300)]
net: dsa: properly check for the bridge_leave methods in dsa_switch_bridge_leave()
This was not caught because there is no switch driver which implements
the .port_bridge_join but not .port_bridge_leave method, but it should
nonetheless be fixed, as in certain conditions (driver development) it
might lead to NULL pointer dereference.
Fixes:
f66a6a69f97a ("net: dsa: permit cross-chip bridging between all trees in the system")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 13 Jul 2021 19:07:18 +0000 (12:07 -0700)]
Merge tag 'vboxsf-v5.14-1' of git://git./linux/kernel/git/hansg/linux
Pull vboxsf fixes from Hans de Goede:
"This adds support for the atomic_open directory-inode op to vboxsf.
Note this is not just an enhancement this also fixes an actual issue
which users are hitting, see the commit message of the "boxsf: Add
support for the atomic_open directory-inode" patch"
* tag 'vboxsf-v5.14-1' of git://git.kernel.org/pub/scm/linux/kernel/git/hansg/linux:
vboxsf: Add support for the atomic_open directory-inode op
vboxsf: Add vboxsf_[create|release]_sf_handle() helpers
vboxsf: Make vboxsf_dir_create() return the handle for the created file
vboxsf: Honor excl flag to the dir-inode create op
Linus Torvalds [Tue, 13 Jul 2021 19:02:07 +0000 (12:02 -0700)]
Merge tag 'for-5.14-rc1-tag' of git://git./linux/kernel/git/kdave/linux
Pull btrfs zoned mode fixes from David Sterba:
- fix deadlock when allocating system chunk
- fix wrong mutex unlock on an error path
- fix extent map splitting for append operation
- update and fix message reporting unusable chunk space
- don't block when background zone reclaim runs with balance in
parallel
* tag 'for-5.14-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: zoned: fix wrong mutex unlock on failure to allocate log root tree
btrfs: don't block if we can't acquire the reclaim lock
btrfs: properly split extent_map for REQ_OP_ZONE_APPEND
btrfs: rework chunk allocation to avoid exhaustion of the system chunk array
btrfs: fix deadlock with concurrent chunk allocations involving system chunks
btrfs: zoned: print unusable percentage when reclaiming block groups
btrfs: zoned: fix types for u64 division in btrfs_reclaim_bgs_work
David S. Miller [Tue, 13 Jul 2021 17:02:41 +0000 (10:02 -0700)]
Merge branch 'sfc-tx-queues'
Íñigo Huguet says:
====================
sfc: Fix lack of XDP TX queues
A change introduced in commit
e26ca4b53582 ("sfc: reduce the number of
requested xdp ev queues") created a bug in XDP_TX and XDP_REDIRECT
because it unintentionally reduced the number of XDP TX queues, letting
not enough queues to have one per CPU, which leaded to errors if XDP
TX/REDIRECT was done from a high numbered CPU.
This patchs make the following changes:
- Fix the bug mentioned above
- Revert commit
99ba0ea616aa ("sfc: adjust efx->xdp_tx_queue_count with
the real number of initialized queues") which intended to fix a related
problem, created by mentioned bug, but it's no longer necessary
- Add a new error log message if there are not enough resources to make
XDP_TX/REDIRECT work
V1 -> V2: keep the calculation of how many tx queues can handle a single
event queue, but apply the "max. tx queues per channel" upper limit.
V2 -> V3: WARN_ON if the number of initialized XDP TXQs differs from the
expected.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Íñigo Huguet [Tue, 13 Jul 2021 14:21:29 +0000 (16:21 +0200)]
sfc: add logs explaining XDP_TX/REDIRECT is not available
If it's not possible to allocate enough channels for XDP, XDP_TX and
XDP_REDIRECT don't work. However, only a message saying that not enough
channels were available was shown, but not saying what are the
consequences in that case. The user didn't know if he/she can use XDP
or not, if the performance is reduced, or what.
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Íñigo Huguet [Tue, 13 Jul 2021 14:21:28 +0000 (16:21 +0200)]
sfc: ensure correct number of XDP queues
Commit
99ba0ea616aa ("sfc: adjust efx->xdp_tx_queue_count with the real
number of initialized queues") intended to fix a problem caused by a
round up when calculating the number of XDP channels and queues.
However, this was not the real problem. The real problem was that the
number of XDP TX queues had been reduced to half in
commit
e26ca4b53582 ("sfc: reduce the number of requested xdp ev queues"),
but the variable xdp_tx_queue_count had remained the same.
Once the correct number of XDP TX queues is created again in the
previous patch of this series, this also can be reverted since the error
doesn't actually exist.
Only in the case that there is a bug in the code we can have different
values in xdp_queue_number and efx->xdp_tx_queue_count. Because of this,
and per Edward Cree's suggestion, I add instead a WARN_ON to catch if it
happens again in the future.
Note that the number of allocated queues can be higher than the number
of used ones due to the round up, as explained in the existing comment
in the code. That's why we also have to stop increasing xdp_queue_number
beyond efx->xdp_tx_queue_count.
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Íñigo Huguet [Tue, 13 Jul 2021 14:21:27 +0000 (16:21 +0200)]
sfc: fix lack of XDP TX queues - error XDP TX failed (-22)
Fixes:
e26ca4b53582 sfc: reduce the number of requested xdp ev queues
The buggy commit intended to allocate less channels for XDP in order to
be more unlikely to reach the limit of 32 channels of the driver.
The idea was to use each IRQ/eventqeue for more XDP TX queues than
before, calculating which is the maximum number of TX queues that one
event queue can handle. For example, in EF10 each event queue could
handle up to 8 queues, better than the 4 they were handling before the
change. This way, it would have to allocate half of channels than before
for XDP TX.
The problem is that the TX queues are also contained inside the channel
structs, and there are only 4 queues per channel. Reducing the number of
channels means also reducing the number of queues, resulting in not
having the desired number of 1 queue per CPU.
This leads to getting errors on XDP_TX and XDP_REDIRECT if they're
executed from a high numbered CPU, because there only exist queues for
the low half of CPUs, actually. If XDP_TX/REDIRECT is executed in a low
numbered CPU, the error doesn't happen. This is the error in the logs
(repeated many times, even rate limited):
sfc 0000:5e:00.0 ens3f0np0: XDP TX failed (-22)
This errors happens in function efx_xdp_tx_buffers, where it expects to
have a dedicated XDP TX queue per CPU.
Reverting the change makes again more likely to reach the limit of 32
channels in machines with many CPUs. If this happen, no XDP_TX/REDIRECT
will be possible at all, and we will have this log error messages:
At interface probe:
sfc 0000:5e:00.0: Insufficient resources for 12 XDP event queues (24 other channels, max 32)
At every subsequent XDP_TX/REDIRECT failure, rate limited:
sfc 0000:5e:00.0 ens3f0np0: XDP TX failed (-22)
However, without reverting the change, it makes the user to think that
everything is OK at probe time, but later it fails in an unpredictable
way, depending on the CPU that handles the packet.
It is better to restore the predictable behaviour. If the user sees the
error message at probe time, he/she can try to configure the best way it
fits his/her needs. At least, he/she will have 2 options:
- Accept that XDP_TX/REDIRECT is not available (he/she may not need it)
- Load sfc module with modparam 'rss_cpus' with a lower number, thus
creating less normal RX queues/channels, letting more free resources
for XDP, with some performance penalty.
Anyway, let the calculation of maximum TX queues that can be handled by
a single event queue, and use it only if it's less than the number of TX
queues per channel. This doesn't happen in practice, but could happen if
some constant values are tweaked in the future, such us
EFX_MAX_TXQ_PER_CHANNEL, EFX_MAX_EVQ_SIZE or EFX_MAX_DMAQ_SIZE.
Related mailing list thread:
https://lore.kernel.org/bpf/
20201215104327.
2be76156@carbon/
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pavel Skripkin [Tue, 13 Jul 2021 10:58:53 +0000 (13:58 +0300)]
net: fddi: fix UAF in fza_probe
fp is netdev private data and it cannot be
used after free_netdev() call. Using fp after free_netdev()
can cause UAF bug. Fix it by moving free_netdev() after error message.
Fixes:
61414f5ec983 ("FDDI: defza: Add support for DEC FDDIcontroller 700
TURBOchannel adapter")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Tue, 13 Jul 2021 09:37:19 +0000 (12:37 +0300)]
net: dsa: sja1105: fix address learning getting disabled on the CPU port
In May 2019 when commit
640f763f98c2 ("net: dsa: sja1105: Add support
for Spanning Tree Protocol") was introduced, the comment that "STP does
not get called for the CPU port" was true. This changed after commit
0394a63acfe2 ("net: dsa: enable and disable all ports") in August 2019
and went largely unnoticed, because the sja1105_bridge_stp_state_set()
method did nothing different compared to the static setup done by
sja1105_init_mac_settings().
With the ability to turn address learning off introduced by the blamed
commit, there is a new priv->learn_ena port mask in the driver. When
sja1105_bridge_stp_state_set() gets called and we are in
BR_STATE_LEARNING or later, address learning is enabled or not depending
on priv->learn_ena & BIT(port).
So what happens is that priv->learn_ena is not being set from anywhere
for the CPU port, and the static configuration done by
sja1105_init_mac_settings() is being overwritten.
To solve this, acknowledge that the static configuration of STP state is
no longer necessary because the STP state is being set by the DSA core
now, but what is necessary is to set priv->learn_ena for the CPU port.
Fixes:
4d9423549501 ("net: dsa: sja1105: offload bridge port flags to device")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vladimir Oltean [Tue, 13 Jul 2021 09:33:50 +0000 (12:33 +0300)]
net: ocelot: fix switchdev objects synced for wrong netdev with LAG offload
The point with a *dev and a *brport_dev is that when we have a LAG net
device that is a bridge port, *dev is an ocelot net device and
*brport_dev is the bonding/team net device. The ocelot net device
beneath the LAG does not exist from the bridge's perspective, so we need
to sync the switchdev objects belonging to the brport_dev and not to the
dev.
Fixes:
e4bd44e89dcf ("net: ocelot: replay switchdev events when joining bridge")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yajun Deng [Tue, 13 Jul 2021 02:48:24 +0000 (10:48 +0800)]
net: Use nlmsg_unicast() instead of netlink_unicast()
It has 'if (err >0 )' statement in nlmsg_unicast(), so use nlmsg_unicast()
instead of netlink_unicast(), this looks more concise.
v2: remove the change in netfilter.
Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Xuan Zhuo [Sat, 10 Jul 2021 03:16:35 +0000 (11:16 +0800)]
xdp, net: Fix use-after-free in bpf_xdp_link_release
The problem occurs between dev_get_by_index() and dev_xdp_attach_link().
At this point, dev_xdp_uninstall() is called. Then xdp link will not be
detached automatically when dev is released. But link->dev already
points to dev, when xdp link is released, dev will still be accessed,
but dev has been released.
dev_get_by_index() |
link->dev = dev |
| rtnl_lock()
| unregister_netdevice_many()
| dev_xdp_uninstall()
| rtnl_unlock()
rtnl_lock(); |
dev_xdp_attach_link() |
rtnl_unlock(); |
| netdev_run_todo() // dev released
bpf_xdp_link_release() |
/* access dev. |
use-after-free */ |
[ 45.966867] BUG: KASAN: use-after-free in bpf_xdp_link_release+0x3b8/0x3d0
[ 45.967619] Read of size 8 at addr
ffff00000f9980c8 by task a.out/732
[ 45.968297]
[ 45.968502] CPU: 1 PID: 732 Comm: a.out Not tainted 5.13.0+ #22
[ 45.969222] Hardware name: linux,dummy-virt (DT)
[ 45.969795] Call trace:
[ 45.970106] dump_backtrace+0x0/0x4c8
[ 45.970564] show_stack+0x30/0x40
[ 45.970981] dump_stack_lvl+0x120/0x18c
[ 45.971470] print_address_description.constprop.0+0x74/0x30c
[ 45.972182] kasan_report+0x1e8/0x200
[ 45.972659] __asan_report_load8_noabort+0x2c/0x50
[ 45.973273] bpf_xdp_link_release+0x3b8/0x3d0
[ 45.973834] bpf_link_free+0xd0/0x188
[ 45.974315] bpf_link_put+0x1d0/0x218
[ 45.974790] bpf_link_release+0x3c/0x58
[ 45.975291] __fput+0x20c/0x7e8
[ 45.975706] ____fput+0x24/0x30
[ 45.976117] task_work_run+0x104/0x258
[ 45.976609] do_notify_resume+0x894/0xaf8
[ 45.977121] work_pending+0xc/0x328
[ 45.977575]
[ 45.977775] The buggy address belongs to the page:
[ 45.978369] page:
fffffc00003e6600 refcount:0 mapcount:0 mapping:
0000000000000000 index:0x0 pfn:0x4f998
[ 45.979522] flags: 0x7fffe0000000000(node=0|zone=0|lastcpupid=0x3ffff)
[ 45.980349] raw:
07fffe0000000000 fffffc00003e6708 ffff0000dac3c010 0000000000000000
[ 45.981309] raw:
0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
[ 45.982259] page dumped because: kasan: bad access detected
[ 45.982948]
[ 45.983153] Memory state around the buggy address:
[ 45.983753]
ffff00000f997f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 45.984645]
ffff00000f998000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 45.985533] >
ffff00000f998080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 45.986419] ^
[ 45.987112]
ffff00000f998100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 45.988006]
ffff00000f998180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[ 45.988895] ==================================================================
[ 45.989773] Disabling lock debugging due to kernel taint
[ 45.990552] Kernel panic - not syncing: panic_on_warn set ...
[ 45.991166] CPU: 1 PID: 732 Comm: a.out Tainted: G B 5.13.0+ #22
[ 45.991929] Hardware name: linux,dummy-virt (DT)
[ 45.992448] Call trace:
[ 45.992753] dump_backtrace+0x0/0x4c8
[ 45.993208] show_stack+0x30/0x40
[ 45.993627] dump_stack_lvl+0x120/0x18c
[ 45.994113] dump_stack+0x1c/0x34
[ 45.994530] panic+0x3a4/0x7d8
[ 45.994930] end_report+0x194/0x198
[ 45.995380] kasan_report+0x134/0x200
[ 45.995850] __asan_report_load8_noabort+0x2c/0x50
[ 45.996453] bpf_xdp_link_release+0x3b8/0x3d0
[ 45.997007] bpf_link_free+0xd0/0x188
[ 45.997474] bpf_link_put+0x1d0/0x218
[ 45.997942] bpf_link_release+0x3c/0x58
[ 45.998429] __fput+0x20c/0x7e8
[ 45.998833] ____fput+0x24/0x30
[ 45.999247] task_work_run+0x104/0x258
[ 45.999731] do_notify_resume+0x894/0xaf8
[ 46.000236] work_pending+0xc/0x328
[ 46.000697] SMP: stopping secondary CPUs
[ 46.001226] Dumping ftrace buffer:
[ 46.001663] (ftrace buffer empty)
[ 46.002110] Kernel Offset: disabled
[ 46.002545] CPU features: 0x00000001,
23202c00
[ 46.003080] Memory Limit: none
Fixes:
aa8d3a716b59db6c ("bpf, xdp: Add bpf_link-based XDP attachment API")
Reported-by: Abaci <abaci@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20210710031635.41649-1-xuanzhuo@linux.alibaba.com
Daniel Borkmann [Mon, 12 Jul 2021 20:57:35 +0000 (22:57 +0200)]
bpf: Fix tail_call_reachable rejection for interpreter when jit failed
During testing of
f263a81451c1 ("bpf: Track subprog poke descriptors correctly
and fix use-after-free") under various failure conditions, for example, when
jit_subprogs() fails and tries to clean up the program to be run under the
interpreter, we ran into the following freeze:
[...]
#127/8 tailcall_bpf2bpf_3:FAIL
[...]
[ 92.041251] BUG: KASAN: slab-out-of-bounds in ___bpf_prog_run+0x1b9d/0x2e20
[ 92.042408] Read of size 8 at addr
ffff88800da67f68 by task test_progs/682
[ 92.043707]
[ 92.044030] CPU: 1 PID: 682 Comm: test_progs Tainted: G O 5.13.0-53301-ge6c08cb33a30-dirty #87
[ 92.045542] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1 04/01/2014
[ 92.046785] Call Trace:
[ 92.047171] ? __bpf_prog_run_args64+0xc0/0xc0
[ 92.047773] ? __bpf_prog_run_args32+0x8b/0xb0
[ 92.048389] ? __bpf_prog_run_args64+0xc0/0xc0
[ 92.049019] ? ktime_get+0x117/0x130
[...] // few hundred [similar] lines more
[ 92.659025] ? ktime_get+0x117/0x130
[ 92.659845] ? __bpf_prog_run_args64+0xc0/0xc0
[ 92.660738] ? __bpf_prog_run_args32+0x8b/0xb0
[ 92.661528] ? __bpf_prog_run_args64+0xc0/0xc0
[ 92.662378] ? print_usage_bug+0x50/0x50
[ 92.663221] ? print_usage_bug+0x50/0x50
[ 92.664077] ? bpf_ksym_find+0x9c/0xe0
[ 92.664887] ? ktime_get+0x117/0x130
[ 92.665624] ? kernel_text_address+0xf5/0x100
[ 92.666529] ? __kernel_text_address+0xe/0x30
[ 92.667725] ? unwind_get_return_address+0x2f/0x50
[ 92.668854] ? ___bpf_prog_run+0x15d4/0x2e20
[ 92.670185] ? ktime_get+0x117/0x130
[ 92.671130] ? __bpf_prog_run_args64+0xc0/0xc0
[ 92.672020] ? __bpf_prog_run_args32+0x8b/0xb0
[ 92.672860] ? __bpf_prog_run_args64+0xc0/0xc0
[ 92.675159] ? ktime_get+0x117/0x130
[ 92.677074] ? lock_is_held_type+0xd5/0x130
[ 92.678662] ? ___bpf_prog_run+0x15d4/0x2e20
[ 92.680046] ? ktime_get+0x117/0x130
[ 92.681285] ? __bpf_prog_run32+0x6b/0x90
[ 92.682601] ? __bpf_prog_run64+0x90/0x90
[ 92.683636] ? lock_downgrade+0x370/0x370
[ 92.684647] ? mark_held_locks+0x44/0x90
[ 92.685652] ? ktime_get+0x117/0x130
[ 92.686752] ? lockdep_hardirqs_on+0x79/0x100
[ 92.688004] ? ktime_get+0x117/0x130
[ 92.688573] ? __cant_migrate+0x2b/0x80
[ 92.689192] ? bpf_test_run+0x2f4/0x510
[ 92.689869] ? bpf_test_timer_continue+0x1c0/0x1c0
[ 92.690856] ? rcu_read_lock_bh_held+0x90/0x90
[ 92.691506] ? __kasan_slab_alloc+0x61/0x80
[ 92.692128] ? eth_type_trans+0x128/0x240
[ 92.692737] ? __build_skb+0x46/0x50
[ 92.693252] ? bpf_prog_test_run_skb+0x65e/0xc50
[ 92.693954] ? bpf_prog_test_run_raw_tp+0x2d0/0x2d0
[ 92.694639] ? __fget_light+0xa1/0x100
[ 92.695162] ? bpf_prog_inc+0x23/0x30
[ 92.695685] ? __sys_bpf+0xb40/0x2c80
[ 92.696324] ? bpf_link_get_from_fd+0x90/0x90
[ 92.697150] ? mark_held_locks+0x24/0x90
[ 92.698007] ? lockdep_hardirqs_on_prepare+0x124/0x220
[ 92.699045] ? finish_task_switch+0xe6/0x370
[ 92.700072] ? lockdep_hardirqs_on+0x79/0x100
[ 92.701233] ? finish_task_switch+0x11d/0x370
[ 92.702264] ? __switch_to+0x2c0/0x740
[ 92.703148] ? mark_held_locks+0x24/0x90
[ 92.704155] ? __x64_sys_bpf+0x45/0x50
[ 92.705146] ? do_syscall_64+0x35/0x80
[ 92.706953] ? entry_SYSCALL_64_after_hwframe+0x44/0xae
[...]
Turns out that the program rejection from
e411901c0b77 ("bpf: allow for tailcalls
in BPF subprograms for x64 JIT") is buggy since env->prog->aux->tail_call_reachable
is never true. Commit
ebf7d1f508a7 ("bpf, x64: rework pro/epilogue and tailcall
handling in JIT") added a tracker into check_max_stack_depth() which propagates
the tail_call_reachable condition throughout the subprograms. This info is then
assigned to the subprogram's func[i]->aux->tail_call_reachable. However, in the
case of the rejection check upon JIT failure, env->prog->aux->tail_call_reachable
is used. func[0]->aux->tail_call_reachable which represents the main program's
information did not propagate this to the outer env->prog->aux, though. Add this
propagation into check_max_stack_depth() where it needs to belong so that the
check can be done reliably.
Fixes:
ebf7d1f508a7 ("bpf, x64: rework pro/epilogue and tailcall handling in JIT")
Fixes:
e411901c0b77 ("bpf: allow for tailcalls in BPF subprograms for x64 JIT")
Co-developed-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Link: https://lore.kernel.org/bpf/618c34e3163ad1a36b1e82377576a6081e182f25.1626123173.git.daniel@iogearbox.net
Christoph Hellwig [Mon, 12 Jul 2021 15:50:01 +0000 (17:50 +0200)]
sd: don't mess with SD_MINORS for CONFIG_DEBUG_BLOCK_EXT_DEVT
No need to give up the original sd minor even with this option,
and if we did we'd also need to fix the number of minors for
this configuration to actually work.
Fixes:
7c3f828b522b0 ("block: refactor device number setup in __device_add_disk")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Matthew Wilcox (Oracle) [Mon, 12 Jul 2021 15:32:07 +0000 (16:32 +0100)]
mm: Make copy_huge_page() always available
Rewrite copy_huge_page() and move it into mm/util.c so it's always
available. Fixes an exposure of uninitialised memory on configurations
with HUGETLB and UFFD enabled and MIGRATION disabled.
Fixes:
8cc5fcbb5be8 ("mm, hugetlb: fix racy resv_huge_pages underflow on UFFDIO_COPY")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Mon, 12 Jul 2021 03:10:49 +0000 (20:10 -0700)]
mm/rmap: fix munlocking Anon THP with mlocked ptes
Many thanks to Kirill for reminding that PageDoubleMap cannot be relied on
to warn of pte mappings in the Anon THP case; and a scan of subpages does
not seem appropriate here. Note how follow_trans_huge_pmd() does not even
mark an Anon THP as mlocked when compound_mapcount != 1: multiple mlocking
of Anon THP is avoided, so simply return from page_mlock() in this case.
Link: https://lore.kernel.org/lkml/cfa154c-d595-406-eb7d-eb9df730f944@google.com/
Fixes:
d9770fcc1c0c ("mm/rmap: fix old bug: munlocking THP missed other mlocks")
Reported-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Colin Ian King [Mon, 12 Jul 2021 14:37:50 +0000 (15:37 +0100)]
octeontx2-pf: Fix uninitialized boolean variable pps
In the case where act->id is FLOW_ACTION_POLICE and also
act->police.rate_bytes_ps > 0 or act->police.rate_pkt_ps is not > 0
the boolean variable pps contains an uninitialized value when
function otx2_tc_act_set_police is called. Fix this by initializing
pps to false.
Addresses-Coverity: ("Uninitialized scalar variable)"
Fixes:
68fbff68dbea ("octeontx2-pf: Add police action for TC flower")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Vasily Averin [Mon, 12 Jul 2021 06:45:06 +0000 (09:45 +0300)]
ipv6: allocate enough headroom in ip6_finish_output2()
When TEE target mirrors traffic to another interface, sk_buff may
not have enough headroom to be processed correctly.
ip_finish_output2() detect this situation for ipv4 and allocates
new skb with enogh headroom. However ipv6 lacks this logic in
ip_finish_output2 and it leads to skb_under_panic:
skbuff: skb_under_panic: text:
ffffffffc0866ad4 len:96 put:24
head:
ffff97be85e31800 data:
ffff97be85e317f8 tail:0x58 end:0xc0 dev:gre0
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:110!
invalid opcode: 0000 [#1] SMP PTI
CPU: 2 PID: 393 Comm: kworker/2:2 Tainted: G OE 5.13.0 #13
Hardware name: Virtuozzo KVM, BIOS 1.11.0-2.vz7.4 04/01/2014
Workqueue: ipv6_addrconf addrconf_dad_work
RIP: 0010:skb_panic+0x48/0x4a
Call Trace:
skb_push.cold.111+0x10/0x10
ipgre_header+0x24/0xf0 [ip_gre]
neigh_connected_output+0xae/0xf0
ip6_finish_output2+0x1a8/0x5a0
ip6_output+0x5c/0x110
nf_dup_ipv6+0x158/0x1000 [nf_dup_ipv6]
tee_tg6+0x2e/0x40 [xt_TEE]
ip6t_do_table+0x294/0x470 [ip6_tables]
nf_hook_slow+0x44/0xc0
nf_hook.constprop.34+0x72/0xe0
ndisc_send_skb+0x20d/0x2e0
ndisc_send_ns+0xd1/0x210
addrconf_dad_work+0x3c8/0x540
process_one_work+0x1d1/0x370
worker_thread+0x30/0x390
kthread+0x116/0x130
ret_from_fork+0x22/0x30
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Randy Dunlap [Sun, 11 Jul 2021 22:31:47 +0000 (15:31 -0700)]
net: hdlc: rename 'mod_init' & 'mod_exit' functions to be module-specific
Rename module_init & module_exit functions that are named
"mod_init" and "mod_exit" so that they are unique in both the
System.map file and in initcall_debug output instead of showing
up as almost anonymous "mod_init".
This is helpful for debugging and in determining how long certain
module_init calls take to execute.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Cc: netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Martin Schiller <ms@dev.tdt.de>
Cc: linux-x25@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Xuan Zhuo [Thu, 8 Jul 2021 08:04:09 +0000 (16:04 +0800)]
bpf, test: fix NULL pointer dereference on invalid expected_attach_type
These two types of XDP progs (BPF_XDP_DEVMAP, BPF_XDP_CPUMAP) will not be
executed directly in the driver, therefore we should also not directly
run them from here. To run in these two situations, there must be further
preparations done, otherwise these may cause a kernel panic.
For more details, see also dev_xdp_attach().
[ 46.982479] BUG: kernel NULL pointer dereference, address:
0000000000000000
[ 46.984295] #PF: supervisor read access in kernel mode
[ 46.985777] #PF: error_code(0x0000) - not-present page
[ 46.987227] PGD
800000010dca4067 P4D
800000010dca4067 PUD
10dca6067 PMD 0
[ 46.989201] Oops: 0000 [#1] SMP PTI
[ 46.990304] CPU: 7 PID: 562 Comm: a.out Not tainted 5.13.0+ #44
[ 46.992001] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/24
[ 46.995113] RIP: 0010:___bpf_prog_run+0x17b/0x1710
[ 46.996586] Code: 49 03 14 cc e8 76 f6 fe ff e9 ad fe ff ff 0f b6 43 01 48 0f bf 4b 02 48 83 c3 08 89 c2 83 e0 0f c0 ea 04 02
[ 47.001562] RSP: 0018:
ffffc900005afc58 EFLAGS:
00010246
[ 47.003115] RAX:
0000000000000000 RBX:
ffffc9000023f068 RCX:
0000000000000000
[ 47.005163] RDX:
0000000000000000 RSI:
0000000000000079 RDI:
ffffc900005afc98
[ 47.007135] RBP:
0000000000000000 R08:
ffffc9000023f048 R09:
c0000000ffffdfff
[ 47.009171] R10:
0000000000000001 R11:
ffffc900005afb40 R12:
ffffc900005afc98
[ 47.011172] R13:
0000000000000001 R14:
0000000000000001 R15:
ffffffff825258a8
[ 47.013244] FS:
00007f04a5207580(0000) GS:
ffff88842fdc0000(0000) knlGS:
0000000000000000
[ 47.015705] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 47.017475] CR2:
0000000000000000 CR3:
0000000100182005 CR4:
0000000000770ee0
[ 47.019558] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 47.021595] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 47.023574] PKRU:
55555554
[ 47.024571] Call Trace:
[ 47.025424] __bpf_prog_run32+0x32/0x50
[ 47.026296] ? printk+0x53/0x6a
[ 47.027066] ? ktime_get+0x39/0x90
[ 47.027895] bpf_test_run.cold.28+0x23/0x123
[ 47.028866] ? printk+0x53/0x6a
[ 47.029630] bpf_prog_test_run_xdp+0x149/0x1d0
[ 47.030649] __sys_bpf+0x1305/0x23d0
[ 47.031482] __x64_sys_bpf+0x17/0x20
[ 47.032316] do_syscall_64+0x3a/0x80
[ 47.033165] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 47.034254] RIP: 0033:0x7f04a51364dd
[ 47.035133] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 48
[ 47.038768] RSP: 002b:
00007fff8f9fc518 EFLAGS:
00000213 ORIG_RAX:
0000000000000141
[ 47.040344] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007f04a51364dd
[ 47.041749] RDX:
0000000000000048 RSI:
0000000020002a80 RDI:
000000000000000a
[ 47.043171] RBP:
00007fff8f9fc530 R08:
0000000002049300 R09:
0000000020000100
[ 47.044626] R10:
0000000000000004 R11:
0000000000000213 R12:
0000000000401070
[ 47.046088] R13:
0000000000000000 R14:
0000000000000000 R15:
0000000000000000
[ 47.047579] Modules linked in:
[ 47.048318] CR2:
0000000000000000
[ 47.049120] ---[ end trace
7ad34443d5be719a ]---
[ 47.050273] RIP: 0010:___bpf_prog_run+0x17b/0x1710
[ 47.051343] Code: 49 03 14 cc e8 76 f6 fe ff e9 ad fe ff ff 0f b6 43 01 48 0f bf 4b 02 48 83 c3 08 89 c2 83 e0 0f c0 ea 04 02
[ 47.054943] RSP: 0018:
ffffc900005afc58 EFLAGS:
00010246
[ 47.056068] RAX:
0000000000000000 RBX:
ffffc9000023f068 RCX:
0000000000000000
[ 47.057522] RDX:
0000000000000000 RSI:
0000000000000079 RDI:
ffffc900005afc98
[ 47.058961] RBP:
0000000000000000 R08:
ffffc9000023f048 R09:
c0000000ffffdfff
[ 47.060390] R10:
0000000000000001 R11:
ffffc900005afb40 R12:
ffffc900005afc98
[ 47.061803] R13:
0000000000000001 R14:
0000000000000001 R15:
ffffffff825258a8
[ 47.063249] FS:
00007f04a5207580(0000) GS:
ffff88842fdc0000(0000) knlGS:
0000000000000000
[ 47.065070] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 47.066307] CR2:
0000000000000000 CR3:
0000000100182005 CR4:
0000000000770ee0
[ 47.067747] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 47.069217] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 47.070652] PKRU:
55555554
[ 47.071318] Kernel panic - not syncing: Fatal exception
[ 47.072854] Kernel Offset: disabled
[ 47.073683] ---[ end Kernel panic - not syncing: Fatal exception ]---
Fixes:
9216477449f3 ("bpf: cpumap: Add the possibility to attach an eBPF program to cpumap")
Fixes:
fbee97feed9b ("bpf: Add support to attach bpf program to a devmap entry")
Reported-by: Abaci <abaci@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: David Ahern <dsahern@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20210708080409.73525-1-xuanzhuo@linux.alibaba.com
Baruch Siach [Tue, 6 Jul 2021 05:44:00 +0000 (08:44 +0300)]
doc, af_xdp: Fix bind flags option typo
Fix XDP_ZERO_COPY flag typo since it is actually named XDP_ZEROCOPY
instead as per if_xdp.h uapi header.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Magnus Karlsson <magnus.karlsson@intel.com>
Link: https://lore.kernel.org/bpf/1656fdf94704e9e735df0f8b97667d8f26dd098b.1625550240.git.baruch@tkos.co.il
Linus Torvalds [Sun, 11 Jul 2021 22:07:40 +0000 (15:07 -0700)]
Linux 5.14-rc1
Hugh Dickins [Wed, 7 Jul 2021 20:13:33 +0000 (13:13 -0700)]
mm/rmap: try_to_migrate() skip zone_device !device_private
I know nothing about zone_device pages and !device_private pages; but if
try_to_migrate_one() will do nothing for them, then it's better that
try_to_migrate() filter them first, than trawl through all their vmas.
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Link: https://lore.kernel.org/lkml/1241d356-8ec9-f47b-a5ec-9b2bf66d242@google.com/
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Wed, 7 Jul 2021 20:11:24 +0000 (13:11 -0700)]
mm/rmap: fix new bug: premature return from page_mlock_one()
In the unlikely race case that page_mlock_one() finds VM_LOCKED has been
cleared by the time it got page table lock, page_vma_mapped_walk_done()
must be called before returning, either explicitly, or by a final call
to page_vma_mapped_walk() - otherwise the page table remains locked.
Fixes:
cd62734ca60d ("mm/rmap: split try_to_munlock from try_to_unmap")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://lore.kernel.org/lkml/20210711151446.GB4070@xsang-OptiPlex-9020/
Link: https://lore.kernel.org/lkml/f71f8523-cba7-3342-40a7-114abc5d1f51@google.com/
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Wed, 7 Jul 2021 20:08:53 +0000 (13:08 -0700)]
mm/rmap: fix old bug: munlocking THP missed other mlocks
The kernel recovers in due course from missing Mlocked pages: but there
was no point in calling page_mlock() (formerly known as
try_to_munlock()) on a THP, because nothing got done even when it was
found to be mapped in another VM_LOCKED vma.
It's true that we need to be careful: Mlocked accounting of pte-mapped
THPs is too difficult (so consistently avoided); but Mlocked accounting
of only-pmd-mapped THPs is supposed to work, even when multiple mappings
are mlocked and munlocked or munmapped. Refine the tests.
There is already a VM_BUG_ON_PAGE(PageDoubleMap) in page_mlock(), so
page_mlock_one() does not even have to worry about that complication.
(I said the kernel recovers: but would page reclaim be likely to split
THP before rediscovering that it's VM_LOCKED? I've not followed that up)
Fixes:
9a73f61bdb8a ("thp, mlock: do not mlock PTE-mapped file huge pages")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Link: https://lore.kernel.org/lkml/cfa154c-d595-406-eb7d-eb9df730f944@google.com/
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Yang Shi <shy828301@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Wed, 7 Jul 2021 20:06:17 +0000 (13:06 -0700)]
mm/rmap: fix comments left over from recent changes
Parallel developments in mm/rmap.c have left behind some out-of-date
comments: try_to_migrate_one() also accepts TTU_SYNC (already commented
in try_to_migrate() itself), and try_to_migrate() returns nothing at
all.
TTU_SPLIT_FREEZE has just been deleted, so reword the comment about it
in mm/huge_memory.c; and TTU_IGNORE_ACCESS was removed in 5.11, so
delete the "recently referenced" comment from try_to_unmap_one() (once
upon a time the comment was near the removed codeblock, but they drifted
apart).
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Link: https://lore.kernel.org/lkml/563ce5b2-7a44-5b4d-1dfd-59a0e65932a9@google.com/
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David S. Miller [Sun, 11 Jul 2021 19:11:06 +0000 (12:11 -0700)]
Merge branch 'bridge-mc-fixes'
Nikolay Aleksandrov says:
====================
net: bridge: multicast: fix automatic router port marking races
While working on per-vlan multicast snooping I found two race conditions
when multicast snooping is enabled. They're identical and happen when
the router port list is modified without the multicast lock. One requires
a PIM hello message to be received on a port and the other an MRD
advertisement. To fix them we just need to take the multicast_lock when
adding the ports to the router port list (marking them as router ports).
Tested on an affected setup by generating the required packets while
modifying the port list in parallel.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Sun, 11 Jul 2021 09:56:29 +0000 (12:56 +0300)]
net: bridge: multicast: fix MRD advertisement router port marking race
When an MRD advertisement is received on a bridge port with multicast
snooping enabled, we mark it as a router port automatically, that
includes adding that port to the router port list. The multicast lock
protects that list, but it is not acquired in the MRD advertisement case
leading to a race condition, we need to take it to fix the race.
Cc: stable@vger.kernel.org
Cc: linus.luessing@c0d3.blue
Fixes:
4b3087c7e37f ("bridge: Snoop Multicast Router Advertisements")
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nikolay Aleksandrov [Sun, 11 Jul 2021 09:56:28 +0000 (12:56 +0300)]
net: bridge: multicast: fix PIM hello router port marking race
When a PIM hello packet is received on a bridge port with multicast
snooping enabled, we mark it as a router port automatically, that
includes adding that port the router port list. The multicast lock
protects that list, but it is not acquired in the PIM message case
leading to a race condition, we need to take it to fix the race.
Cc: stable@vger.kernel.org
Fixes:
91b02d3d133b ("bridge: mcast: add router port on PIM hello message")
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 11 Jul 2021 18:17:57 +0000 (11:17 -0700)]
Merge tag 'irq-urgent-2021-07-11' of git://git./linux/kernel/git/tip/tip
Pull irq fixes from Ingo Molnar:
"Two fixes:
- Fix a MIPS IRQ handling RCU bug
- Remove a DocBook annotation for a parameter that doesn't exist
anymore"
* tag 'irq-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/mips: Fix RCU violation when using irqdomain lookup on interrupt entry
genirq/irqdesc: Drop excess kernel-doc entry @lookup
Linus Torvalds [Sun, 11 Jul 2021 18:13:57 +0000 (11:13 -0700)]
Merge tag 'sched-urgent-2021-07-11' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Three fixes:
- Fix load tracking bug/inconsistency
- Fix a sporadic CFS bandwidth constraints enforcement bug
- Fix a uclamp utilization tracking bug for newly woken tasks"
* tag 'sched-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/uclamp: Ignore max aggregation if rq is idle
sched/fair: Fix CFS bandwidth hrtimer expiry type
sched/fair: Sync load_sum with load_avg after dequeue
Linus Torvalds [Sun, 11 Jul 2021 18:10:48 +0000 (11:10 -0700)]
Merge tag 'perf-urgent-2021-07-11' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"A fix and a hardware-enablement addition:
- Robustify uncore_snbep's skx_iio_set_mapping()'s error cleanup
- Add cstate event support for Intel ICELAKE_X and ICELAKE_D"
* tag 'perf-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Clean up error handling path of iio mapping
perf/x86/cstate: Add ICELAKE_X and ICELAKE_D support
Linus Torvalds [Sun, 11 Jul 2021 18:06:09 +0000 (11:06 -0700)]
Merge tag 'locking-urgent-2021-07-11' of git://git./linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
- Fix a Sparc crash
- Fix a number of objtool warnings
- Fix /proc/lockdep output on certain configs
- Restore a kprobes fail-safe
* tag 'locking-urgent-2021-07-11' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/atomic: sparc: Fix arch_cmpxchg64_local()
kprobe/static_call: Restore missing static_call_text_reserved()
static_call: Fix static_call_text_reserved() vs __init
jump_label: Fix jump_label_text_reserved() vs __init
locking/lockdep: Fix meaningless /proc/lockdep output of lock classes on !CONFIG_PROVE_LOCKING
Linus Torvalds [Sun, 11 Jul 2021 17:59:53 +0000 (10:59 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"This is a set of minor fixes and clean ups in the core and various
drivers.
The only core change in behaviour is the I/O retry for spinup notify,
but that shouldn't impact anything other than the failing case"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (23 commits)
scsi: virtio_scsi: Add validation for residual bytes from response
scsi: ipr: System crashes when seeing type 20 error
scsi: core: Retry I/O for Notify (Enable Spinup) Required error
scsi: mpi3mr: Fix warnings reported by smatch
scsi: qedf: Add check to synchronize abort and flush
scsi: MAINTAINERS: Add mpi3mr driver maintainers
scsi: libfc: Fix array index out of bound exception
scsi: mvsas: Use DEVICE_ATTR_RO()/RW() macro
scsi: megaraid_mbox: Use DEVICE_ATTR_ADMIN_RO() macro
scsi: qedf: Use DEVICE_ATTR_RO() macro
scsi: qedi: Use DEVICE_ATTR_RO() macro
scsi: message: mptfc: Switch from pci_ to dma_ API
scsi: be2iscsi: Fix some missing space in some messages
scsi: be2iscsi: Fix an error handling path in beiscsi_dev_probe()
scsi: ufs: Fix build warning without CONFIG_PM
scsi: bnx2fc: Remove meaningless bnx2fc_abts_cleanup() return value assignment
scsi: qla2xxx: Add heartbeat check
scsi: virtio_scsi: Do not overwrite SCSI status
scsi: libsas: Add LUN number check in .slave_alloc callback
scsi: core: Inline scsi_mq_alloc_queue()
...
Linus Torvalds [Sun, 11 Jul 2021 17:54:24 +0000 (10:54 -0700)]
Merge tag 'perf-tools-for-v5.14-2021-07-10' of git://git./linux/kernel/git/acme/linux
Pull more perf tool updates from Arnaldo Carvalho de Melo:
"New features:
- Enable use of BPF counters with 'perf stat --for-each-cgroup',
using per-CPU 'cgroup-switch' events with an attached BPF program
that does aggregation per-cgroup in the kernel instead of using
per-cgroup perf events.
- Add Topdown metrics L2 events as default events in 'perf stat' for
systems having those events.
Hardware tracing:
- Add a config for max loops without consuming a packet in the Intel
PT packet decoder, set via 'perf config intel-pt.max-loops=N'
Hardware enablement:
- Disable misleading NMI watchdog message in 'perf stat' on hybrid
systems such as Intel Alder Lake.
- Add a dummy event on hybrid systems to collect metadata records.
- Add 24x7 nest metric events for the Power10 platform.
Fixes:
- Fix event parsing for PMUs starting with the same prefix.
- Fix the 'perf trace' 'trace' alias installation dir.
- Fix buffer size to report iregs in perf script python scripts,
supporting the extended registers in PowerPC.
- Fix overflow in elf_sec__is_text().
- Fix 's' on source line when disasm is empty in the annotation TUI,
accessible via 'perf annotate', 'perf report' and 'perf top'.
- Plug leaks in scandir() returned dirent entries in 'perf test' when
sorting the shell tests.
- Fix --task and --stat with pipe input in 'perf report'.
- Fix 'perf probe' use of debuginfo files by build id.
- If a DSO has both dynsym and symtab ELF sections, read from both
when loading the symbol table, fixing a problem processing Fedora
32 glibc DSOs.
Libraries:
- Add grouping of events to libperf, from code in tools/perf,
allowing libperf users to use that mode.
Misc:
- Filter plt stubs from the 'perf probe --functions' output.
- Update UAPI header copies for asound, DRM, mman-common.h and the
ones affected by the quotactl_fd syscall"
* tag 'perf-tools-for-v5.14-2021-07-10' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (29 commits)
perf test: Add free() calls for scandir() returned dirent entries
libperf: Add tests for perf_evlist__set_leader()
libperf: Remove BUG_ON() from library code in get_group_fd()
libperf: Add group support to perf_evsel__open()
perf tools: Fix pattern matching for same substring in different PMU type
perf record: Add a dummy event on hybrid systems to collect metadata records
perf stat: Add Topdown metrics L2 events as default events
libperf: Adopt evlist__set_leader() from tools/perf as perf_evlist__set_leader()
libperf: Move 'nr_groups' from tools/perf to evlist::nr_groups
libperf: Move 'leader' from tools/perf to perf_evsel::leader
libperf: Move 'idx' from tools/perf to perf_evsel::idx
libperf: Change tests to single static and shared binaries
perf intel-pt: Add a config for max loops without consuming a packet
perf stat: Disable the NMI watchdog message on hybrid
perf vendor events power10: Adds 24x7 nest metric events for power10 platform
perf script python: Fix buffer size to report iregs in perf script
perf trace: Fix the perf trace link location
perf top: Fix overflow in elf_sec__is_text()
perf annotate: Fix 's' on source line when disasm is empty
perf probe: Do not show @plt function by default
...
Marek Behún [Sun, 11 Jul 2021 16:38:15 +0000 (18:38 +0200)]
net: phy: marvell10g: fix differentiation of 88X3310 from 88X3340
It seems that we cannot differentiate 88X3310 from 88X3340 by simply
looking at bit 3 of revision ID. This only works on revisions A0 and A1.
On revision B0, this bit is always 1.
Instead use the 3.d00d register for differentiation, since this register
contains information about number of ports on the device.
Fixes:
9885d016ffa9 ("net: phy: marvell10g: add separate structure for 88X3340")
Signed-off-by: Marek Behún <kabel@kernel.org>
Reported-by: Matteo Croce <mcroce@linux.microsoft.com>
Tested-by: Matteo Croce <mcroce@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
kernel test robot [Sun, 11 Jul 2021 16:12:56 +0000 (18:12 +0200)]
dsa: fix for_each_child.cocci warnings
For_each_available_child_of_node should have of_node_put() before
return around line 423.
Generated by: scripts/coccinelle/iterators/for_each_child.cocci
CC: Alexander Lobakin <alobakin@pm.me>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>