platform/kernel/linux-starfive.git
6 years agoibmvnic: Free coherent DMA memory if FW map failed
Thomas Falcon [Wed, 16 May 2018 20:49:03 +0000 (15:49 -0500)]
ibmvnic: Free coherent DMA memory if FW map failed

If the firmware map fails for whatever reason, remember to free
up the memory after.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/ipv4: Initialize proto and ports in flow struct
David Ahern [Wed, 16 May 2018 20:36:40 +0000 (13:36 -0700)]
net/ipv4: Initialize proto and ports in flow struct

Updating the FIB tracepoint for the recent change to allow rules using
the protocol and ports exposed a few places where the entries in the flow
struct are not initialized.

For __fib_validate_source add the call to fib4_rules_early_flow_dissect
since it is invoked for the input path. For netfilter, add the memset on
the flow struct to avoid future problems like this. In ip_route_input_slow
need to set the fields if the skb dissection does not happen.

Fixes: bfff4862653b ("net: fib_rules: support for match on ip_proto, sport and dport")
Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotls: don't use stack memory in a scatterlist
Matt Mullins [Wed, 16 May 2018 17:48:40 +0000 (10:48 -0700)]
tls: don't use stack memory in a scatterlist

scatterlist code expects virt_to_page() to work, which fails with
CONFIG_VMAP_STACK=y.

Fixes: c46234ebb4d1e ("tls: RX path for ktls")
Signed-off-by: Matt Mullins <mmullins@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotuntap: fix use after free during release
Jason Wang [Wed, 16 May 2018 12:39:33 +0000 (20:39 +0800)]
tuntap: fix use after free during release

After commit b196d88aba8a ("tun: fix use after free for ptr_ring") we
need clean up tx ring during release(). But unfortunately, it tries to
do the cleanup blindly after socket were destroyed which will lead
another use-after-free. Fix this by doing the cleanup before dropping
the last reference of the socket in __tun_detach().

Reported-by: Andrei Vagin <avagin@virtuozzo.com>
Acked-by: Andrei Vagin <avagin@virtuozzo.com>
Fixes: b196d88aba8a ("tun: fix use after free for ptr_ring")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'qed-LL2-fixes'
David S. Miller [Wed, 16 May 2018 18:52:30 +0000 (14:52 -0400)]
Merge branch 'qed-LL2-fixes'

Michal Kalderon says:

====================
qed: LL2 fixes

This series fixes some issues in ll2 related to synchronization
and resource freeing
====================

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: Fix LL2 race during connection terminate
Michal Kalderon [Wed, 16 May 2018 11:44:40 +0000 (14:44 +0300)]
qed: Fix LL2 race during connection terminate

Stress on qedi/qedr load unload lead to list_del corruption.
This is due to ll2 connection terminate freeing resources without
verifying that no more ll2 processing will occur.

This patch unregisters the ll2 status block before terminating
the connection to assure this race does not occur.

Fixes: 1d6cff4fca4366 ("qed: Add iSCSI out of order packet handling")
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: Fix possibility of list corruption during rmmod flows
Michal Kalderon [Wed, 16 May 2018 11:44:39 +0000 (14:44 +0300)]
qed: Fix possibility of list corruption during rmmod flows

The ll2 flows of flushing the txq/rxq need to be synchronized with the
regular fp processing. Caused list corruption during load/unload stress
tests.

Fixes: 0a7fb11c23c0f ("qed: Add Light L2 support")
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: LL2 flush isles when connection is closed
Michal Kalderon [Wed, 16 May 2018 11:44:38 +0000 (14:44 +0300)]
qed: LL2 flush isles when connection is closed

Driver should free all pending isles once it gets a FLUSH cqe from FW.
Part of iSCSI out of order flow.

Fixes: 1d6cff4fca4366 ("qed: Add iSCSI out of order packet handling")
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/sched: fix refcnt leak in the error path of tcf_vlan_init()
Davide Caratti [Wed, 16 May 2018 10:54:29 +0000 (12:54 +0200)]
net/sched: fix refcnt leak in the error path of tcf_vlan_init()

Similarly to what was done with commit a52956dfc503 ("net sched actions:
fix refcnt leak in skbmod"), fix the error path of tcf_vlan_init() to avoid
refcnt leaks when wrong value of TCA_VLAN_PUSH_VLAN_PROTOCOL is given.

Fixes: 5026c9b1bafc ("net sched: vlan action fix late binding")
CC: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: 8390: ne: Fix accidentally removed RBTX4927 support
Geert Uytterhoeven [Wed, 16 May 2018 09:18:01 +0000 (11:18 +0200)]
net: 8390: ne: Fix accidentally removed RBTX4927 support

The configuration settings for RBTX4927 were accidentally removed,
leading to a silently broken network interface.

Re-add the missing settings to fix this.

Fixes: 8eb97ff5a4ec941d ("net: 8390: remove m32r specific bits")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'dsa-bcm_sf2-CFP-fixes'
David S. Miller [Wed, 16 May 2018 18:11:23 +0000 (14:11 -0400)]
Merge branch 'dsa-bcm_sf2-CFP-fixes'

Florian Fainelli says:

====================
net: dsa: bcm_sf2: CFP fixes

This patch series fixes a number of usability issues with the SF2 Compact Field
Processor code:

- we would not be properly bound checking the location when we let the kernel
  automatically place rules with RX_CLS_LOC_ANY

- when using IPv6 rules and user space specifies a location identifier we
  would be off by one in what the chain ID (within the Broadcom tag) indicates

- it would be possible to delete one of the two slices of an IPv6 while leaving
  the other one programming leading to various problems
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: bcm_sf2: Fix IPv6 rule half deletion
Florian Fainelli [Tue, 15 May 2018 23:01:25 +0000 (16:01 -0700)]
net: dsa: bcm_sf2: Fix IPv6 rule half deletion

It was possible to delete only one half of an IPv6, which would leave
the second half still programmed and possibly in use. Instead of
checking for the unused bitmap, we need to check the unique bitmap, and
refuse any deletion that does not match that criteria. We also need to
move that check from bcm_sf2_cfp_rule_del_one() into its caller:
bcm_sf2_cfp_rule_del() otherwise we would not be able to delete second
halves anymore that would not pass the first test.

Fixes: ba0696c22e7c ("net: dsa: bcm_sf2: Add support for IPv6 CFP rules")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: bcm_sf2: Fix IPv6 rules and chain ID
Florian Fainelli [Tue, 15 May 2018 23:01:24 +0000 (16:01 -0700)]
net: dsa: bcm_sf2: Fix IPv6 rules and chain ID

We had several issues that would make the programming of IPv6 rules both
inconsistent and error prone:

- the chain ID that we would be asking the hardware to put in the
  packet's Broadcom tag would be off by one, it would return one of the
  two indexes, but not the one user-space specified

- when an user specified a particular location to insert a CFP rule at,
  we would not be returning the same index, which would be confusing if
  nothing else

- finally, like IPv4, it would be possible to overflow the last entry by
  re-programming it

Fix this by swapping the usage of rule_index[0] and rule_index[1] where
relevant in order to return a consistent and correct user-space
experience.

Fixes: ba0696c22e7c ("net: dsa: bcm_sf2: Add support for IPv6 CFP rules")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: dsa: bcm_sf2: Fix RX_CLS_LOC_ANY overwrite for last rule
Florian Fainelli [Tue, 15 May 2018 23:01:23 +0000 (16:01 -0700)]
net: dsa: bcm_sf2: Fix RX_CLS_LOC_ANY overwrite for last rule

When we let the kernel pick up a rule location with RX_CLS_LOC_ANY, we
would be able to overwrite the last rules because of a number of issues.

The IPv4 code path would not be checking that rule_index is within
bounds, and it would also only be allowed to pick up rules from range
0..126 instead of the full 0..127 range. This would lead us to allow
overwriting the last rule when we let the kernel pick-up the location.

Fixes: 3306145866b6 ("net: dsa: bcm_sf2: Move IPv4 CFP processing to specific functions")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet: phy: micrel: add 125MHz reference clock workaround
Markus Niebel [Tue, 15 May 2018 08:18:56 +0000 (10:18 +0200)]
net: phy: micrel: add 125MHz reference clock workaround

The micrel KSZ9031 phy has a optional clock pin (CLK125_NDO) which can be
used as reference clock for the MAC unit. The clock signal must meet the
RGMII requirements to ensure the correct data transmission between the
MAC and the PHY. The KSZ9031 phy does not fulfill the duty cycle
requirement if the phy is configured as slave. For a complete
describtion look at the errata sheets: DS80000691D or DS80000692D.

The errata sheet recommends to force the phy into master mode whenever
there is a 1000Base-T link-up as work around. Only set the
"micrel,force-master" property if you use the phy reference clock provided
by CLK125_NDO pin as MAC reference clock in your application.

Attenation, this workaround is only usable if the link partner can
be configured to slave mode for 1000Base-T.

Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
[m.felsch@pengutronix.de: fix dt-binding documentation]
[m.felsch@pengutronix.de: use already existing result var for read/write]
[m.felsch@pengutronix.de: add error handling]
[m.felsch@pengutronix.de: add more comments]
Signed-off-by: Marco Felsch <m.felsch@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotcp: purge write queue in tcp_connect_init()
Eric Dumazet [Tue, 15 May 2018 04:14:26 +0000 (21:14 -0700)]
tcp: purge write queue in tcp_connect_init()

syzkaller found a reliable way to crash the host, hitting a BUG()
in __tcp_retransmit_skb()

Malicous MSG_FASTOPEN is the root cause. We need to purge write queue
in tcp_connect_init() at the point we init snd_una/write_seq.

This patch also replaces the BUG() by a less intrusive WARN_ON_ONCE()

kernel BUG at net/ipv4/tcp_output.c:2837!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 5276 Comm: syz-executor0 Not tainted 4.17.0-rc3+ #51
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__tcp_retransmit_skb+0x2992/0x2eb0 net/ipv4/tcp_output.c:2837
RSP: 0000:ffff8801dae06ff8 EFLAGS: 00010206
RAX: ffff8801b9fe61c0 RBX: 00000000ffc18a16 RCX: ffffffff864e1a49
RDX: 0000000000000100 RSI: ffffffff864e2e12 RDI: 0000000000000005
RBP: ffff8801dae073a0 R08: ffff8801b9fe61c0 R09: ffffed0039c40dd2
R10: ffffed0039c40dd2 R11: ffff8801ce206e93 R12: 00000000421eeaad
R13: ffff8801ce206d4e R14: ffff8801ce206cc0 R15: ffff8801cd4f4a80
FS:  0000000000000000(0000) GS:ffff8801dae00000(0063) knlGS:00000000096bc900
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000020000000 CR3: 00000001c47b6000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 tcp_retransmit_skb+0x2e/0x250 net/ipv4/tcp_output.c:2923
 tcp_retransmit_timer+0xc50/0x3060 net/ipv4/tcp_timer.c:488
 tcp_write_timer_handler+0x339/0x960 net/ipv4/tcp_timer.c:573
 tcp_write_timer+0x111/0x1d0 net/ipv4/tcp_timer.c:593
 call_timer_fn+0x230/0x940 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x79e/0xc50 kernel/time/timer.c:1666
 run_timer_softirq+0x4c/0x70 kernel/time/timer.c:1692
 __do_softirq+0x2e0/0xaf5 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x1d1/0x200 kernel/softirq.c:405
 exiting_irq arch/x86/include/asm/apic.h:525 [inline]
 smp_apic_timer_interrupt+0x17e/0x710 arch/x86/kernel/apic/apic.c:1052
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863

Fixes: cf60af03ca4e ("net-tcp: Fast Open client - sendmsg(MSG_FASTOPEN)")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx5: Fix build break when CONFIG_SMP=n
Saeed Mahameed [Mon, 14 May 2018 22:38:10 +0000 (15:38 -0700)]
net/mlx5: Fix build break when CONFIG_SMP=n

Avoid using the kernel's irq_descriptor and return IRQ vector affinity
directly from the driver.

This fixes the following build break when CONFIG_SMP=n

include/linux/mlx5/driver.h: In function ‘mlx5_get_vector_affinity_hint’:
include/linux/mlx5/driver.h:1299:13: error:
        ‘struct irq_desc’ has no member named ‘affinity_hint’

Fixes: 6082d9c9c94a ("net/mlx5: Fix mlx5_get_vector_affinity function")
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
CC: Randy Dunlap <rdunlap@infradead.org>
CC: Guenter Roeck <linux@roeck-us.net>
CC: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Israel Rukshin <israelr@mellanox.com>
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipvlan: call netdevice notifier when master mac address changed
Keefe Liu [Mon, 14 May 2018 11:38:09 +0000 (19:38 +0800)]
ipvlan: call netdevice notifier when master mac address changed

When master device's mac has been changed, the commit
32c10bbfe914 ("ipvlan: always use the current L2 addr of the
master") makes the IPVlan devices's mac changed also, but it
doesn't do related works such as flush the IPVlan devices's
arp table.

Signed-off-by: Keefe Liu <liuqifa@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agovmxnet3: use DMA memory barriers where required
hpreg@vmware.com [Mon, 14 May 2018 12:14:49 +0000 (08:14 -0400)]
vmxnet3: use DMA memory barriers where required

The gen bits must be read first from (resp. written last to) DMA memory.
The proper way to enforce this on Linux is to call dma_rmb() (resp.
dma_wmb()).

Signed-off-by: Regis Duchesne <hpreg@vmware.com>
Acked-by: Ronak Doshi <doshir@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agovmxnet3: set the DMA mask before the first DMA map operation
hpreg@vmware.com [Mon, 14 May 2018 12:14:34 +0000 (08:14 -0400)]
vmxnet3: set the DMA mask before the first DMA map operation

The DMA mask must be set before, not after, the first DMA map operation, or
the first DMA map operation could in theory fail on some systems.

Fixes: b0eb57cb97e78 ("VMXNET3: Add support for virtual IOMMU")
Signed-off-by: Regis Duchesne <hpreg@vmware.com>
Acked-by: Ronak Doshi <doshir@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: Correct ntuple mask validation for hash filters
Kumar Sanghvi [Mon, 14 May 2018 10:57:34 +0000 (16:27 +0530)]
cxgb4: Correct ntuple mask validation for hash filters

Earlier code of doing bitwise AND with field width bits was wrong.
Instead, simplify code to calculate ntuple_mask based on supplied
fields and then compare with mask configured in hw - which is the
correct and simpler way to validate ntuple mask.

Fixes: 3eb8b62d5a26 ("cxgb4: add support to create hash-filters via tc-flower offload")
Signed-off-by: Kumar Sanghvi <kumaras@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/smc: check for missing nlattrs in SMC_PNETID messages
Eric Biggers [Mon, 14 May 2018 00:01:30 +0000 (17:01 -0700)]
net/smc: check for missing nlattrs in SMC_PNETID messages

It's possible to crash the kernel in several different ways by sending
messages to the SMC_PNETID generic netlink family that are missing the
expected attributes:

- Missing SMC_PNETID_NAME => null pointer dereference when comparing
  names.
- Missing SMC_PNETID_ETHNAME => null pointer dereference accessing
  smc_pnetentry::ndev.
- Missing SMC_PNETID_IBNAME => null pointer dereference accessing
  smc_pnetentry::smcibdev.
- Missing SMC_PNETID_IBPORT => out of bounds array access to
  smc_ib_device::pattr[-1].

Fix it by validating that all expected attributes are present and that
SMC_PNETID_IBPORT is nonzero.

Reported-by: syzbot+5cd61039dc9b8bfa6e47@syzkaller.appspotmail.com
Fixes: 6812baabf24d ("smc: establish pnet table management")
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_core: Fix error handling in mlx4_init_port_info.
Tarick Bedeir [Sun, 13 May 2018 23:38:45 +0000 (16:38 -0700)]
net/mlx4_core: Fix error handling in mlx4_init_port_info.

Avoid exiting the function with a lingering sysfs file (if the first
call to device_create_file() fails while the second succeeds), and avoid
calling devlink_port_unregister() twice.

In other words, either mlx4_init_port_info() succeeds and returns zero, or
it fails, returns non-zero, and requires no cleanup.

Fixes: 096335b3f983 ("mlx4_core: Allow dynamic MTU configuration for IB ports")
Signed-off-by: Tarick Bedeir <tarick@google.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotun: fix use after free for ptr_ring
Jason Wang [Fri, 11 May 2018 02:49:25 +0000 (10:49 +0800)]
tun: fix use after free for ptr_ring

We used to initialize ptr_ring during TUNSETIFF, this is because its
size depends on the tx_queue_len of netdevice. And we try to clean it
up when socket were detached from netdevice. A race were spotted when
trying to do uninit during a read which will lead a use after free for
pointer ring. Solving this by always initialize a zero size ptr_ring
in open() and do resizing during TUNSETIFF, and then we can safely do
cleanup during close(). With this, there's no need for the workaround
that was introduced by commit 4df0bfc79904 ("tun: fix a memory leak
for tfile->tx_array").

Reported-by: syzbot+e8b902c3c3fadf0a9dba@syzkaller.appspotmail.com
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Fixes: 1576d9860599 ("tun: switch to use skb array for tx")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
David S. Miller [Mon, 14 May 2018 01:07:02 +0000 (21:07 -0400)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2018-05-14

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

The main changes are:

1) Fix nfp to allow zero-length BPF capabilities, meaning the nfp
   capability parsing loop will otherwise exit early if the last
   capability is zero length and therefore driver will fail to probe
   with an error such as:

     nfp: BPF capabilities left after parsing, parsed:92 total length:100
     nfp: invalid BPF capabilities at offset:92

   Fix from Jakub.

2) libbpf's bpf_object__open() may return IS_ERR_OR_NULL() and not
   just an error. Fix libbpf's bpf_prog_load_xattr() to handle that
   case as well, also from Jakub.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Mon, 14 May 2018 00:28:47 +0000 (20:28 -0400)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter/IPVS fixes for net

The following patchset contains Netfilter/IPVS fixes for your net tree,
they are:

1) Fix handling of simultaneous open TCP connection in conntrack,
   from Jozsef Kadlecsik.

2) Insufficient sanitify check of xtables extension names, from
   Florian Westphal.

3) Skip unnecessary synchronize_rcu() call when transaction log
   is already empty, from Florian Westphal.

4) Incorrect destination mac validation in ebt_stp, from Stephen
   Hemminger.

5) xtables module reference counter leak in nft_compat, from
   Florian Westphal.

6) Incorrect connection reference counting logic in IPVS
   one-packet scheduler, from Julian Anastasov.

7) Wrong stats for 32-bits CPU in IPVS, also from Julian.

8) Calm down sparse error in netfilter core, also from Florian.

9) Use nla_strlcpy to fix compilation warning in nfnetlink_acct
   and nfnetlink_cthelper, again from Florian.

10) Missing module alias in icmp and icmp6 xtables extensions,
    from Florian Westphal.

11) Base chain statistics in nf_tables may be unset/null, from Florian.

12) Fix handling of large matchinfo size in nft_compat, this includes
    one preparation for before this fix. From Florian.

13) Fix bogus EBUSY error when deleting chains due to incorrect reference
    counting from the preparation phase of the two-phase commit protocol.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqede: Fix ref-cnt usage count
Michal Kalderon [Sun, 13 May 2018 17:54:06 +0000 (20:54 +0300)]
qede: Fix ref-cnt usage count

Rebooting while qedr is loaded with a VLAN interface present
results in unregister_netdevice waiting for the usage count
to become free.
The fix is that rdma devices should be removed before unregistering
the netdevice, to assure all references to ndev are decreased.

Fixes: cee9fbd8e2e9 ("qede: Add qedr framework")
Signed-off-by: Ariel Elior <ariel.elior@cavium.com>
Signed-off-by: Michal Kalderon <michal.kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years ago3c59x: convert to generic DMA API
Christoph Hellwig [Sat, 12 May 2018 10:16:50 +0000 (12:16 +0200)]
3c59x: convert to generic DMA API

This driver supports EISA devices in addition to PCI devices, and relied
on the legacy behavior of the pci_dma* shims to pass on a NULL pointer
to the DMA API, and the DMA API being able to handle that.  When the
NULL forwarding broke the EISA support got broken.  Fix this by converting
to the DMA API instead of the legacy PCI shims.

Fixes: 4167b2ad ("PCI: Remove NULL device handling from PCI DMA API")
Reported-by: tedheadster <tedheadster@gmail.com>
Tested-by: tedheadster <tedheadster@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agopacket: in packet_snd start writing at link layer allocation
Willem de Bruijn [Fri, 11 May 2018 17:24:25 +0000 (13:24 -0400)]
packet: in packet_snd start writing at link layer allocation

Packet sockets allow construction of packets shorter than
dev->hard_header_len to accommodate protocols with variable length
link layer headers. These packets are padded to dev->hard_header_len,
because some device drivers interpret that as a minimum packet size.

packet_snd reserves dev->hard_header_len bytes on allocation.
SOCK_DGRAM sockets call skb_push in dev_hard_header() to ensure that
link layer headers are stored in the reserved range. SOCK_RAW sockets
do the same in tpacket_snd, but not in packet_snd.

Syzbot was able to send a zero byte packet to a device with massive
116B link layer header, causing padding to cross over into skb_shinfo.
Fix this by writing from the start of the llheader reserved range also
in the case of packet_snd/SOCK_RAW.

Update skb_set_network_header to the new offset. This also corrects
it for SOCK_DGRAM, where it incorrectly double counted reserve due to
the skb_push in dev_hard_header.

Fixes: 9ed988cd5915 ("packet: validate variable length ll headers")
Reported-by: syzbot+71d74a5406d02057d559@syzkaller.appspotmail.com
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonetfilter: nf_tables: fix memory leak on error exit return
Colin Ian King [Wed, 9 May 2018 12:22:56 +0000 (13:22 +0100)]
netfilter: nf_tables: fix memory leak on error exit return

Currently the -EBUSY error return path is not free'ing resources
allocated earlier, leaving a memory leak. Fix this by exiting via the
error exit label err5 that performs the necessary resource clean
up.

Detected by CoverityScan, CID#1432975 ("Resource leak")

Fixes: 9744a6fcefcb ("netfilter: nf_tables: check if same extensions are set when adding elements")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
6 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 11 May 2018 21:14:46 +0000 (14:14 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Verify lengths of keys provided by the user is AF_KEY, from Kevin
    Easton.

 2) Add device ID for BCM89610 PHY. Thanks to Bhadram Varka.

 3) Add Spectre guards to some ATM code, courtesy of Gustavo A. R.
    Silva.

 4) Fix infinite loop in NSH protocol code. To Eric Dumazet we are most
    grateful for this fix.

 5) Line up /proc/net/netlink headers properly. This fix from YU Bo, we
    do appreciate.

 6) Use after free in TLS code. Once again we are blessed by the
    honorable Eric Dumazet with this fix.

 7) Fix regression in TLS code causing stalls on partial TLS records.
    This fix is bestowed upon us by Andrew Tomt.

 8) Deal with too small MTUs properly in LLC code, another great gift
    from Eric Dumazet.

 9) Handle cached route flushing properly wrt. MTU locking in ipv4, to
    Hangbin Liu we give thanks for this.

10) Fix regression in SO_BINDTODEVIC handling wrt. UDP socket demux.
    Paolo Abeni, he gave us this.

11) Range check coalescing parameters in mlx4 driver, thank you Moshe
    Shemesh.

12) Some ipv6 ICMP error handling fixes in rxrpc, from our good brother
    David Howells.

13) Fix kexec on mlx5 by freeing IRQs in shutdown path. Daniel Juergens,
    you're the best!

14) Don't send bonding RLB updates to invalid MAC addresses. Debabrata
    Benerjee saved us!

15) Uh oh, we were leaking in udp_sendmsg and ping_v4_sendmsg. The ship
    is now water tight, thanks to Andrey Ignatov.

16) IPSEC memory leak in ixgbe from Colin Ian King, man we've got holes
    everywhere!

17) Fix error path in tcf_proto_create, Jiri Pirko what would we do
    without you!

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (92 commits)
  net sched actions: fix refcnt leak in skbmod
  net: sched: fix error path in tcf_proto_create() when modules are not configured
  net sched actions: fix invalid pointer dereferencing if skbedit flags missing
  ixgbe: fix memory leak on ipsec allocation
  ixgbevf: fix ixgbevf_xmit_frame()'s return type
  ixgbe: return error on unsupported SFP module when resetting
  ice: Set rq_last_status when cleaning rq
  ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
  mlxsw: core: Fix an error handling path in 'mlxsw_core_bus_device_register()'
  bonding: send learning packets for vlans on slave
  bonding: do not allow rlb updates to invalid mac
  net/mlx5e: Err if asked to offload TC match on frag being first
  net/mlx5: E-Switch, Include VF RDMA stats in vport statistics
  net/mlx5: Free IRQs in shutdown path
  rxrpc: Trace UDP transmission failure
  rxrpc: Add a tracepoint to log ICMP/ICMP6 and error messages
  rxrpc: Fix the min security level for kernel calls
  rxrpc: Fix error reception on AF_INET6 sockets
  rxrpc: Fix missing start of call timeout
  qed: fix spelling mistake: "taskelt" -> "tasklet"
  ...

6 years agoMerge tag 'nfs-for-4.17-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Fri, 11 May 2018 20:56:43 +0000 (13:56 -0700)]
Merge tag 'nfs-for-4.17-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client fixes from Anna Schumaker:
 "These patches fix both a possible corruption during NFSoRDMA MR
  recovery, and a sunrpc tracepoint crash.

  Additionally, Trond has a new email address to put in the MAINTAINERS
  file"

* tag 'nfs-for-4.17-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  Change Trond's email address in MAINTAINERS
  sunrpc: Fix latency trace point crashes
  xprtrdma: Fix list corruption / DMAR errors during MR recovery

6 years agonet sched actions: fix refcnt leak in skbmod
Roman Mashak [Fri, 11 May 2018 18:35:33 +0000 (14:35 -0400)]
net sched actions: fix refcnt leak in skbmod

When application fails to pass flags in netlink TLV when replacing
existing skbmod action, the kernel will leak refcnt:

$ tc actions get action skbmod index 1
total acts 0

        action order 0: skbmod pipe set smac 00:11:22:33:44:55
         index 1 ref 1 bind 0

For example, at this point a buggy application replaces the action with
index 1 with new smac 00:aa:22:33:44:55, it fails because of zero flags,
however refcnt gets bumped:

$ tc actions get actions skbmod index 1
total acts 0

        action order 0: skbmod pipe set smac 00:11:22:33:44:55
         index 1 ref 2 bind 0
$

Tha patch fixes this by calling tcf_idr_release() on existing actions.

Fixes: 86da71b57383d ("net_sched: Introduce skbmod action")
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'ceph-for-4.17-rc5' of git://github.com/ceph/ceph-client
Linus Torvalds [Fri, 11 May 2018 20:36:06 +0000 (13:36 -0700)]
Merge tag 'ceph-for-4.17-rc5' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "These patches fix two long-standing bugs in the DIO code path, one of
  which is a crash trivially triggerable with splice()"

* tag 'ceph-for-4.17-rc5' of git://github.com/ceph/ceph-client:
  ceph: fix iov_iter issues in ceph_direct_read_write()
  libceph: add osd_req_op_extent_osd_data_bvecs()
  ceph: fix rsize/wsize capping in ceph_direct_read_write()

6 years agonet: sched: fix error path in tcf_proto_create() when modules are not configured
Jiri Pirko [Fri, 11 May 2018 15:45:32 +0000 (17:45 +0200)]
net: sched: fix error path in tcf_proto_create() when modules are not configured

In case modules are not configured, error out when tp->ops is null
and prevent later null pointer dereference.

Fixes: 33a48927c193 ("sched: push TC filter protocol creation into a separate function")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'sh-for-4.17-fixes' of git://git.libc.org/linux-sh
Linus Torvalds [Fri, 11 May 2018 20:14:24 +0000 (13:14 -0700)]
Merge tag 'sh-for-4.17-fixes' of git://git.libc.org/linux-sh

Pull arch/sh fixes from Rich Felker:
 "Fixes for critical regressions and a build failure.

  The regressions were introduced in 4.15 and 4.17-rc1 and prevented
  booting on affected systems"

* tag 'sh-for-4.17-fixes' of git://git.libc.org/linux-sh:
  sh: switch to NO_BOOTMEM
  sh: mm: Fix unprotected access to struct device
  sh: fix build failure for J2 cpu with SMP disabled

6 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Fri, 11 May 2018 20:09:04 +0000 (13:09 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "There's a small memblock accounting problem when freeing the initrd
  and a Spectre-v2 mitigation for NVIDIA Denver CPUs which just requires
  a match on the CPU ID register.

  Summary:

   - Mitigate Spectre-v2 for NVIDIA Denver CPUs

   - Free memblocks corresponding to freed initrd area"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: capabilities: Add NVIDIA Denver CPU to bp_harden list
  arm64: Add MIDR encoding for NVIDIA CPUs
  arm64: To remove initrd reserved area entry from memblock

6 years agoMerge tag 'powerpc-4.17-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Fri, 11 May 2018 20:07:22 +0000 (13:07 -0700)]
Merge tag 'powerpc-4.17-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "One fix for an actual regression, the change to the SYSCALL_DEFINE
  wrapper broke FTRACE_SYSCALLS for us due to a name mismatch. There's
  also another commit to the same code to make sure we match all our
  syscalls with various prefixes.

  And then just one minor build fix, and the removal of an unused
  variable that was removed and then snuck back in due to some rebasing.

  Thanks to: Naveen N. Rao"

* tag 'powerpc-4.17-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: Fix CONFIG_NUMA=n build
  powerpc/trace/syscalls: Update syscall name matching logic to account for ppc_ prefix
  powerpc/trace/syscalls: Update syscall name matching logic
  powerpc/64: Remove unused paca->soft_enabled

6 years agoMerge tag 'trace-v4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Fri, 11 May 2018 20:04:35 +0000 (13:04 -0700)]
Merge tag 'trace-v4.17-rc4' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Working on some new updates to trace filtering, I noticed that the
  regex_match_front() test was updated to be limited to the size of the
  pattern instead of the full test string.

  But as the test string is not guaranteed to be nul terminated, it
  still needs to consider the size of the test string"

* tag 'trace-v4.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix regex_match_front() to not over compare the test string

6 years agoMerge branch '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Fri, 11 May 2018 19:57:23 +0000 (15:57 -0400)]
Merge branch '10GbE' of git://git./linux/kernel/git/jkirsher/net-queue

Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2018-05-11

This series contains fixes to the ice, ixgbe and ixgbevf drivers.

Jeff Shaw provides a fix to ensure rq_last_status gets set, whether or
not the hardware responds with an error in the ice driver.

Emil adds a check for unsupported module during the reset routine for
ixgbe.

Luc Van Oostenryck fixes ixgbevf_xmit_frame() where it was not using the
correct return value (int).

Colin Ian King fixes a potential resource leak in ixgbe, where we were
not freeing ipsec in our cleanup path.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'rxrpc-fixes-20180510' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Fri, 11 May 2018 19:55:57 +0000 (15:55 -0400)]
Merge tag 'rxrpc-fixes-20180510' of git://git./linux/kernel/git/dhowells/linux-fs

David Howells says:

====================
rxrpc: Fixes

Here are three fixes for AF_RXRPC and two tracepoints that were useful for
finding them:

 (1) Fix missing start of expect-Rx-by timeout on initial packet
     transmission so that calls will time out if the peer doesn't respond.

 (2) Fix error reception on AF_INET6 sockets by using the correct family of
     sockopts on the UDP transport socket.

 (3) Fix setting the minimum security level on kernel calls so that they
     can be encrypted.

 (4) Add a tracepoint to log ICMP/ICMP6 and other error reports from the
     transport socket.

 (5) Add a tracepoint to log UDP sendmsg failure so that we can find out if
     transmission failure occurred on the UDP socket.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet sched actions: fix invalid pointer dereferencing if skbedit flags missing
Roman Mashak [Fri, 11 May 2018 14:55:09 +0000 (10:55 -0400)]
net sched actions: fix invalid pointer dereferencing if skbedit flags missing

When application fails to pass flags in netlink TLV for a new skbedit action,
the kernel results in the following oops:

[    8.307732] BUG: unable to handle kernel paging request at 0000000000021130
[    8.309167] PGD 80000000193d1067 P4D 80000000193d1067 PUD 180e0067 PMD 0
[    8.310595] Oops: 0000 [#1] SMP PTI
[    8.311334] Modules linked in: kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd cryptd glue_helper serio_raw
[    8.314190] CPU: 1 PID: 397 Comm: tc Not tainted 4.17.0-rc3+ #357
[    8.315252] RIP: 0010:__tcf_idr_release+0x33/0x140
[    8.316203] RSP: 0018:ffffa0718038f840 EFLAGS: 00010246
[    8.317123] RAX: 0000000000000001 RBX: 0000000000021100 RCX: 0000000000000000
[    8.319831] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000021100
[    8.321181] RBP: 0000000000000000 R08: 000000000004adf8 R09: 0000000000000122
[    8.322645] R10: 0000000000000000 R11: ffffffff9e5b01ed R12: 0000000000000000
[    8.324157] R13: ffffffff9e0d3cc0 R14: 0000000000000000 R15: 0000000000000000
[    8.325590] FS:  00007f591292e700(0000) GS:ffff8fcf5bc40000(0000) knlGS:0000000000000000
[    8.327001] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    8.327987] CR2: 0000000000021130 CR3: 00000000180e6004 CR4: 00000000001606a0
[    8.329289] Call Trace:
[    8.329735]  tcf_skbedit_init+0xa7/0xb0
[    8.330423]  tcf_action_init_1+0x362/0x410
[    8.331139]  ? try_to_wake_up+0x44/0x430
[    8.331817]  tcf_action_init+0x103/0x190
[    8.332511]  tc_ctl_action+0x11a/0x220
[    8.333174]  rtnetlink_rcv_msg+0x23d/0x2e0
[    8.333902]  ? _cond_resched+0x16/0x40
[    8.334569]  ? __kmalloc_node_track_caller+0x5b/0x2c0
[    8.335440]  ? rtnl_calcit.isra.31+0xf0/0xf0
[    8.336178]  netlink_rcv_skb+0xdb/0x110
[    8.336855]  netlink_unicast+0x167/0x220
[    8.337550]  netlink_sendmsg+0x2a7/0x390
[    8.338258]  sock_sendmsg+0x30/0x40
[    8.338865]  ___sys_sendmsg+0x2c5/0x2e0
[    8.339531]  ? pagecache_get_page+0x27/0x210
[    8.340271]  ? filemap_fault+0xa2/0x630
[    8.340943]  ? page_add_file_rmap+0x108/0x200
[    8.341732]  ? alloc_set_pte+0x2aa/0x530
[    8.342573]  ? finish_fault+0x4e/0x70
[    8.343332]  ? __handle_mm_fault+0xbc1/0x10d0
[    8.344337]  ? __sys_sendmsg+0x53/0x80
[    8.345040]  __sys_sendmsg+0x53/0x80
[    8.345678]  do_syscall_64+0x4f/0x100
[    8.346339]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    8.347206] RIP: 0033:0x7f591191da67
[    8.347831] RSP: 002b:00007fff745abd48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[    8.349179] RAX: ffffffffffffffda RBX: 00007fff745abe70 RCX: 00007f591191da67
[    8.350431] RDX: 0000000000000000 RSI: 00007fff745abdc0 RDI: 0000000000000003
[    8.351659] RBP: 000000005af35251 R08: 0000000000000001 R09: 0000000000000000
[    8.352922] R10: 00000000000005f1 R11: 0000000000000246 R12: 0000000000000000
[    8.354183] R13: 00007fff745afed0 R14: 0000000000000001 R15: 00000000006767c0
[    8.355400] Code: 41 89 d4 53 89 f5 48 89 fb e8 aa 20 fd ff 85 c0 0f 84 ed 00
00 00 48 85 db 0f 84 cf 00 00 00 40 84 ed 0f 85 cd 00 00 00 45 84 e4 <8b> 53 30
74 0d 85 d2 b8 ff ff ff ff 0f 8f b3 00 00 00 8b 43 2c
[    8.358699] RIP: __tcf_idr_release+0x33/0x140 RSP: ffffa0718038f840
[    8.359770] CR2: 0000000000021130
[    8.360438] ---[ end trace 60c66be45dfc14f0 ]---

The caller calls action's ->init() and passes pointer to "struct tc_action *a",
which later may be initialized to point at the existing action, otherwise
"struct tc_action *a" is still invalid, and therefore dereferencing it is an
error as happens in tcf_idr_release, where refcnt is decremented.

So in case of missing flags tcf_idr_release must be called only for
existing actions.

v2:
    - prepare patch for net tree

Fixes: 5e1567aeb7fe ("net sched: skbedit action fix late binding")
Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'for-linus-4.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 11 May 2018 19:30:34 +0000 (12:30 -0700)]
Merge tag 'for-linus-4.17-rc5-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "One fix for the kernel running as a fully virtualized guest using PV
  drivers on old Xen hypervisor versions"

* tag 'for-linus-4.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: Reset VCPU0 info pointer after shared_info remap

6 years agoixgbe: fix memory leak on ipsec allocation
Colin Ian King [Wed, 9 May 2018 13:58:48 +0000 (14:58 +0100)]
ixgbe: fix memory leak on ipsec allocation

The error clean up path kfree's adapter->ipsec and should be
instead kfree'ing ipsec. Fix this.  Also, the err1 error exit path
does not need to kfree ipsec because this failure path was for
the failed allocation of ipsec.

Detected by CoverityScan, CID#146424 ("Resource Leak")

Fixes: 63a67fe229ea ("ixgbe: add ipsec offload add and remove SA")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoixgbevf: fix ixgbevf_xmit_frame()'s return type
Luc Van Oostenryck [Tue, 24 Apr 2018 13:16:48 +0000 (15:16 +0200)]
ixgbevf: fix ixgbevf_xmit_frame()'s return type

The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, but the implementation in this
driver returns an 'int'.

Fix this by returning 'netdev_tx_t' in this driver too.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoixgbe: return error on unsupported SFP module when resetting
Emil Tantilov [Fri, 20 Apr 2018 00:06:57 +0000 (17:06 -0700)]
ixgbe: return error on unsupported SFP module when resetting

Add check for unsupported module and return the error code.
This fixes a Coverity hit due to unused return status from setup_sfp.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoice: Set rq_last_status when cleaning rq
Jeff Shaw [Wed, 18 Apr 2018 18:23:27 +0000 (11:23 -0700)]
ice: Set rq_last_status when cleaning rq

Prior to this commit, the rq_last_status was only set when hardware
responded with an error. This leads to rq_last_status being invalid
in the future when hardware eventually responds without error. This
commit resolves the issue by unconditionally setting rq_last_status
with the value returned in the descriptor.

Fixes: 940b61af02f4 ("ice: Initialize PF and setup miscellaneous
interrupt")

Signed-off-by: Jeff Shaw <jeffrey.b.shaw@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
6 years agoChange Trond's email address in MAINTAINERS
Trond Myklebust [Fri, 11 May 2018 18:13:57 +0000 (14:13 -0400)]
Change Trond's email address in MAINTAINERS

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
6 years agosh: switch to NO_BOOTMEM
Rob Herring [Fri, 11 May 2018 13:45:59 +0000 (08:45 -0500)]
sh: switch to NO_BOOTMEM

Commit 0fa1c579349f ("of/fdt: use memblock_virt_alloc for early alloc")
inadvertently switched the DT unflattening allocations from memblock to
bootmem which doesn't work because the unflattening happens before
bootmem is initialized. Swapping the order of bootmem init and
unflattening could also fix this, but removing bootmem is desired. So
enable NO_BOOTMEM on SH like other architectures have done.

Fixes: 0fa1c579349f ("of/fdt: use memblock_virt_alloc for early alloc")
Reported-by: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Rich Felker <dalias@libc.org>
6 years agommap: introduce sane default mmap limits
Linus Torvalds [Fri, 11 May 2018 16:52:01 +0000 (09:52 -0700)]
mmap: introduce sane default mmap limits

The internal VM "mmap()" interfaces are based on the mmap target doing
everything using page indexes rather than byte offsets, because
traditionally (ie 32-bit) we had the situation that the byte offset
didn't fit in a register.  So while the mmap virtual address was limited
by the word size of the architecture, the backing store was not.

So we're basically passing "pgoff" around as a page index, in order to
be able to describe backing store locations that are much bigger than
the word size (think files larger than 4GB etc).

But while this all makes a ton of sense conceptually, we've been dogged
by various drivers that don't really understand this, and internally
work with byte offsets, and then try to work with the page index by
turning it into a byte offset with "pgoff << PAGE_SHIFT".

Which obviously can overflow.

Adding the size of the mapping to it to get the byte offset of the end
of the backing store just exacerbates the problem, and if you then use
this overflow-prone value to check various limits of your device driver
mmap capability, you're just setting yourself up for problems.

The correct thing for drivers to do is to do their limit math in page
indices, the way the interface is designed.  Because the generic mmap
code _does_ test that the index doesn't overflow, since that's what the
mmap code really cares about.

HOWEVER.

Finding and fixing various random drivers is a sisyphean task, so let's
just see if we can just make the core mmap() code do the limiting for
us.  Realistically, the only "big" backing stores we need to care about
are regular files and block devices, both of which are known to do this
properly, and which have nice well-defined limits for how much data they
can access.

So let's special-case just those two known cases, and then limit other
random mmap users to a backing store that still fits in "unsigned long".
Realistically, that's not much of a limit at all on 64-bit, and on
32-bit architectures the only worry might be the GPU drivers, which can
have big physical address spaces.

To make it possible for drivers like that to say that they are 64-bit
clean, this patch does repurpose the "FMODE_UNSIGNED_OFFSET" bit in the
file flags to allow drivers to mark their file descriptors as safe in
the full 64-bit mmap address space.

[ The timing for doing this is less than optimal, and this should really
  go in a merge window. But realistically, this needs wide testing more
  than it needs anything else, and being main-line is the only way to do
  that.

  So the earlier the better, even if it's outside the proper development
  cycle        - Linus ]

Cc: Kees Cook <keescook@chromium.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Willy Tarreau <w@1wt.eu>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge tag 'pm-4.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 11 May 2018 16:49:02 +0000 (09:49 -0700)]
Merge tag 'pm-4.17-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix two PCI power management regressions from the 4.13 cycle and
  one cpufreq schedutil governor bug introduced during the 4.12 cycle,
  drop a stale comment from the schedutil code and fix two mistakes in
  docs.

  Specifics:

   - Restore device_may_wakeup() check in pci_enable_wake() removed
     inadvertently during the 4.13 cycle to prevent systems from drawing
     excessive power when suspended or off, among other things (Rafael
     Wysocki).

   - Fix pci_dev_run_wake() to properly handle devices that only can
     signal PME# when in the D3cold power state (Kai Heng Feng).

   - Fix the schedutil cpufreq governor to avoid using UINT_MAX as the
     new CPU frequency in some cases due to a missing check (Rafael
     Wysocki).

   - Remove a stale comment regarding worker kthreads from the schedutil
     cpufreq governor (Juri Lelli).

   - Fix a copy-paste mistake in the intel_pstate driver documentation
     (Juri Lelli).

   - Fix a typo in the system sleep states documentation (Jonathan
     Neuschäfer)"

* tag 'pm-4.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PCI / PM: Check device_may_wakeup() in pci_enable_wake()
  PCI / PM: Always check PME wakeup capability for runtime wakeup support
  cpufreq: schedutil: Avoid using invalid next_freq
  cpufreq: schedutil: remove stale comment
  PM: docs: intel_pstate: fix Active Mode w/o HWP paragraph
  PM: docs: sleep-states: Fix a typo ("includig")

6 years agoMerge tag 'mtd/fixes-for-4.17-rc5' of git://git.infradead.org/linux-mtd
Linus Torvalds [Fri, 11 May 2018 16:46:14 +0000 (09:46 -0700)]
Merge tag 'mtd/fixes-for-4.17-rc5' of git://git.infradead.org/linux-mtd

Pull mtd fixes from Boris Brezillon:

 - make nand_soft_waitrdy() wait tWB before polling the status REG

 - fix BCH write in the the Marvell NAND controller driver

 - fix wrong picosec to msec conversion in the Marvell NAND controller
   driver

 - fix DMA handling in the TI OneNAND controllre driver

* tag 'mtd/fixes-for-4.17-rc5' of git://git.infradead.org/linux-mtd:
  mtd: rawnand: Make sure we wait tWB before polling the STATUS reg
  mtd: rawnand: marvell: fix command xtype in BCH write hook
  mtd: rawnand: marvell: pass ms delay to wait_op
  mtd: onenand: omap2: Disable DMA for HIGHMEM buffers

6 years agoMerge tag 'mlx5-fixes-2018-05-10' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Fri, 11 May 2018 16:26:29 +0000 (12:26 -0400)]
Merge tag 'mlx5-fixes-2018-05-10' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
Mellanox, mlx5 fixes 2018-05-10

the following series includes some fixes for mlx5 core driver.
Please pull and let me know if there's any problem.

For -stable v4.5
("net/mlx5: E-Switch, Include VF RDMA stats in vport statistics")

For -stable v4.10
("net/mlx5e: Err if asked to offload TC match on frag being first")
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'drm-fixes-for-v4.17-rc5' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 11 May 2018 16:18:02 +0000 (09:18 -0700)]
Merge tag 'drm-fixes-for-v4.17-rc5' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "nouveau, amdgpu, i915, vc4, omap, exynos and atomic fixes.

  As last week seemed a bit slow, we got a few more fixes this week.

  The main stuff is two weeks of fixes for amdgpu, some missing bits of
  vega12 atom firmware support were added, and some power management
  fixes.

  Nouveau got two regression fixes for an DP MST deadlock and a random
  oops fix.

  i915 got an LVDS panel timeout fix 2 WARN fixes.

  exynos fixed a pagefault issue in the mixer driver.

  vc4 has an oops fix.

  omap had a bunch of uninit var and error-checking fixes. Two atomic
  modesetting state fixes.

  One minor agp cleanup patch"

* tag 'drm-fixes-for-v4.17-rc5' of git://people.freedesktop.org/~airlied/linux: (30 commits)
  drm/amd/pp: Fix performance drop on Fiji
  drm/nouveau: Fix deadlock in nv50_mstm_register_connector()
  drm/nouveau/ttm: don't dereference nvbo::cli, it can outlive client
  agp: uninorth: make two functions static
  drm/amd/pp: Refine the output of pp_power_profile_mode on VI
  drm/amdgpu: Switch to interruptable wait to recover from ring hang.
  drm/ttm: Use GFP_TRANSHUGE_LIGHT for allocating huge pages
  drm/amd/display: Use kvzalloc for potentially large allocations
  drm/amd/display: Don't return ddc result and read_bytes in same return value
  drm/amd/display: Add get_firmware_info_v3_2 for VG12
  drm/amd: Add BIOS smu_info v3_3 required struct def.
  drm/amd/display: Add VG12 ASIC IDs
  drm/vc4: Fix scaling of uni-planar formats
  drm/exynos: hdmi: avoid duplicating drm_bridge_attach
  drm/i915: Fix drm:intel_enable_lvds ERROR message in kernel log
  drm/i915: Correctly populate user mode h/vdisplay with pipe src size during readout
  drm/i915: Adjust eDP's logical vco in a reliable place.
  drm/bridge/sii8620: add Kconfig dependency on extcon
  drm/omap: handle alloc failures in omap_connector
  drm/omap: add missing linefeeds to prints
  ...

6 years agoipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
Andrey Ignatov [Thu, 10 May 2018 17:59:34 +0000 (10:59 -0700)]
ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg

Fix more memory leaks in ip_cmsg_send() callers. Part of them were fixed
earlier in 919483096bfe.

* udp_sendmsg one was there since the beginning when linux sources were
  first added to git;
* ping_v4_sendmsg one was copy/pasted in c319b4d76b9e.

Whenever return happens in udp_sendmsg() or ping_v4_sendmsg() IP options
have to be freed if they were allocated previously.

Add label so that future callers (if any) can use it instead of kfree()
before return that is easy to forget.

Fixes: c319b4d76b9e (net: ipv4: add IPPROTO_ICMP socket kind)
Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agomlxsw: core: Fix an error handling path in 'mlxsw_core_bus_device_register()'
Christophe JAILLET [Thu, 10 May 2018 11:26:16 +0000 (13:26 +0200)]
mlxsw: core: Fix an error handling path in 'mlxsw_core_bus_device_register()'

Resources are not freed in the reverse order of the allocation.
Labels are also mixed-up.

Fix it and reorder code and labels in the error handling path of
'mlxsw_core_bus_device_register()'

Fixes: ef3116e5403e ("mlxsw: spectrum: Register KVD resources with devlink")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'bonding-bug-fixes-and-regressions'
David S. Miller [Fri, 11 May 2018 15:50:41 +0000 (11:50 -0400)]
Merge branch 'bonding-bug-fixes-and-regressions'

Debabrata Banerjee says:

====================
bonding: bug fixes and regressions

Fixes to bonding driver for balance-alb mode, suitable for stable.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobonding: send learning packets for vlans on slave
Debabrata Banerjee [Wed, 9 May 2018 23:32:11 +0000 (19:32 -0400)]
bonding: send learning packets for vlans on slave

There was a regression at some point from the intended functionality of
commit f60c3704e87d ("bonding: Fix alb mode to only use first level
vlans.")

Given the return value vlan_get_encap_level() we need to store the nest
level of the bond device, and then compare the vlan's encap level to
this. Without this, this check always fails and learning packets are
never sent.

In addition, this same commit caused a regression in the behavior of
balance_alb, which requires learning packets be sent for all interfaces
using the slave's mac in order to load balance properly. For vlan's
that have not set a user mac, we can send after checking one bit.
Otherwise we need send the set mac, albeit defeating rx load balancing
for that vlan.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agobonding: do not allow rlb updates to invalid mac
Debabrata Banerjee [Wed, 9 May 2018 23:32:10 +0000 (19:32 -0400)]
bonding: do not allow rlb updates to invalid mac

Make sure multicast, broadcast, and zero mac's cannot be the output of rlb
updates, which should all be directed arps. Receive load balancing will be
collapsed if any of these happen, as the switch will broadcast.

Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotracing: Fix regex_match_front() to not over compare the test string
Steven Rostedt (VMware) [Wed, 9 May 2018 15:59:32 +0000 (11:59 -0400)]
tracing: Fix regex_match_front() to not over compare the test string

The regex match function regex_match_front() in the tracing filter logic,
was fixed to test just the pattern length from testing the entire test
string. That is, it went from strncmp(str, r->pattern, len) to
strcmp(str, r->pattern, r->len).

The issue is that str is not guaranteed to be nul terminated, and if r->len
is greater than the length of str, it can access more memory than is
allocated.

The solution is to add a simple test if (len < r->len) return 0.

Cc: stable@vger.kernel.org
Fixes: 285caad415f45 ("tracing/filters: Fix MATCH_FRONT_ONLY filter matching")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
6 years agoMerge branches 'pm-pci' and 'pm-docs'
Rafael J. Wysocki [Fri, 11 May 2018 13:17:18 +0000 (15:17 +0200)]
Merge branches 'pm-pci' and 'pm-docs'

* pm-pci:
  PCI / PM: Check device_may_wakeup() in pci_enable_wake()
  PCI / PM: Always check PME wakeup capability for runtime wakeup support

* pm-docs:
  PM: docs: intel_pstate: fix Active Mode w/o HWP paragraph
  PM: docs: sleep-states: Fix a typo ("includig")

6 years agocompat: fix 4-byte infoleak via uninitialized struct field
Jann Horn [Fri, 11 May 2018 00:19:01 +0000 (02:19 +0200)]
compat: fix 4-byte infoleak via uninitialized struct field

Commit 3a4d44b61625 ("ntp: Move adjtimex related compat syscalls to
native counterparts") removed the memset() in compat_get_timex().  Since
then, the compat adjtimex syscall can invoke do_adjtimex() with an
uninitialized ->tai.

If do_adjtimex() doesn't write to ->tai (e.g.  because the arguments are
invalid), compat_put_timex() then copies the uninitialized ->tai field
to userspace.

Fix it by adding the memset() back.

Fixes: 3a4d44b61625 ("ntp: Move adjtimex related compat syscalls to native counterparts")
Signed-off-by: Jann Horn <jannh@google.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
6 years agoMerge branch 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 11 May 2018 00:37:07 +0000 (10:37 +1000)]
Merge branch 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Single amdgpu regression fix

* 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux:
  drm/amd/pp: Fix performance drop on Fiji

6 years agonet/mlx5e: Err if asked to offload TC match on frag being first
Roi Dayan [Thu, 22 Mar 2018 16:51:37 +0000 (18:51 +0200)]
net/mlx5e: Err if asked to offload TC match on frag being first

The HW doesn't support matching on frag first/later, return error if we are
asked to offload that.

Fixes: 3f7d0eb42d59 ("net/mlx5e: Offload TC matching on packets being IP fragments")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: E-Switch, Include VF RDMA stats in vport statistics
Adi Nissim [Wed, 25 Apr 2018 08:21:32 +0000 (11:21 +0300)]
net/mlx5: E-Switch, Include VF RDMA stats in vport statistics

The host side reporting of VF vport statistics didn't include the VF
RDMA traffic.

Fixes: 3b751a2a418a ("net/mlx5: E-Switch, Introduce get vf statistics")
Signed-off-by: Adi Nissim <adin@mellanox.com>
Reported-by: Ariel Almog <ariela@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agonet/mlx5: Free IRQs in shutdown path
Daniel Jurgens [Mon, 26 Mar 2018 18:35:29 +0000 (13:35 -0500)]
net/mlx5: Free IRQs in shutdown path

Some platforms require IRQs to be free'd in the shutdown path. Otherwise
they will fail to be reallocated after a kexec.

Fixes: 8812c24d28f4 ("net/mlx5: Add fast unload support in shutdown flow")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
6 years agorxrpc: Trace UDP transmission failure
David Howells [Thu, 10 May 2018 22:26:01 +0000 (23:26 +0100)]
rxrpc: Trace UDP transmission failure

Add a tracepoint to log transmission failure from the UDP transport socket
being used by AF_RXRPC.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Add a tracepoint to log ICMP/ICMP6 and error messages
David Howells [Thu, 10 May 2018 22:26:01 +0000 (23:26 +0100)]
rxrpc: Add a tracepoint to log ICMP/ICMP6 and error messages

Add a tracepoint to log received ICMP/ICMP6 events and other error
messages.

Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Fix the min security level for kernel calls
David Howells [Thu, 10 May 2018 22:26:01 +0000 (23:26 +0100)]
rxrpc: Fix the min security level for kernel calls

Fix the kernel call initiation to set the minimum security level for kernel
initiated calls (such as from kAFS) from the sockopt value.

Fixes: 19ffa01c9c45 ("rxrpc: Use structs to hold connection params and protocol info")
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Fix error reception on AF_INET6 sockets
David Howells [Thu, 10 May 2018 22:26:00 +0000 (23:26 +0100)]
rxrpc: Fix error reception on AF_INET6 sockets

AF_RXRPC tries to turn on IP_RECVERR and IP_MTU_DISCOVER on the UDP socket
it just opened for communications with the outside world, regardless of the
type of socket.  Unfortunately, this doesn't work with an AF_INET6 socket.

Fix this by turning on IPV6_RECVERR and IPV6_MTU_DISCOVER instead if the
socket is of the AF_INET6 family.

Without this, kAFS server and address rotation doesn't work correctly
because the algorithm doesn't detect received network errors.

Fixes: 75b54cb57ca3 ("rxrpc: Add IPv6 support")
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agorxrpc: Fix missing start of call timeout
David Howells [Thu, 10 May 2018 22:26:00 +0000 (23:26 +0100)]
rxrpc: Fix missing start of call timeout

The expect_rx_by call timeout is supposed to be set when a call is started
to indicate that we need to receive a packet by that point.  This is
currently put back every time we receive a packet, but it isn't started
when we first send a packet.  Without this, the call may wait forever if
the server doesn't deign to reply.

Fix this by setting the timeout upon a successful UDP sendmsg call for the
first DATA packet.  The timeout is initiated only for initial transmission
and not for subsequent retries as we don't want the retry mechanism to
extend the timeout indefinitely.

Fixes: a158bdd3247b ("rxrpc: Fix call timeouts")
Reported-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
6 years agotools: bpf: handle NULL return in bpf_prog_load_xattr()
Jakub Kicinski [Thu, 10 May 2018 17:09:34 +0000 (10:09 -0700)]
tools: bpf: handle NULL return in bpf_prog_load_xattr()

bpf_object__open() can return error pointer as well as NULL.
Fix error handling in bpf_prog_load_xattr() (and indirectly
bpf_prog_load()).

Fixes: 6f6d33f3b3d0 ("bpf: selftests add sockmap tests")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
6 years agoMerge tag 'linux-can-fixes-for-4.17-20180510' of ssh://gitolite.kernel.org/pub/scm...
David S. Miller [Thu, 10 May 2018 21:57:11 +0000 (17:57 -0400)]
Merge tag 'linux-can-fixes-for-4.17-20180510' of ssh://gitolite./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
this is a pull request for net/master consisting of 2 patches.

Both patches are from Lukas Wunner and fix two problems found in the
hi311x CAN driver under high load situations.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: fix spelling mistake: "taskelt" -> "tasklet"
Colin Ian King [Thu, 10 May 2018 14:03:27 +0000 (15:03 +0100)]
qed: fix spelling mistake: "taskelt" -> "tasklet"

Trivial fix to spelling mistake in DP_VERBOSE message text

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg
Xin Long [Thu, 10 May 2018 09:34:13 +0000 (17:34 +0800)]
sctp: remove sctp_chunk_put from fail_mark err path in sctp_ulpevent_make_rcvmsg

In Commit 1f45f78f8e51 ("sctp: allow GSO frags to access the chunk too"),
it held the chunk in sctp_ulpevent_make_rcvmsg to access it safely later
in recvmsg. However, it also added sctp_chunk_put in fail_mark err path,
which is only triggered before holding the chunk.

syzbot reported a use-after-free crash happened on this err path, where
it shouldn't call sctp_chunk_put.

This patch simply removes this call.

Fixes: 1f45f78f8e51 ("sctp: allow GSO frags to access the chunk too")
Reported-by: syzbot+141d898c5f24489db4aa@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_en: Fix an error handling path in 'mlx4_en_init_netdev()'
Christophe JAILLET [Thu, 10 May 2018 07:06:04 +0000 (09:06 +0200)]
net/mlx4_en: Fix an error handling path in 'mlx4_en_init_netdev()'

If an error occurs, 'mlx4_en_destroy_netdev()' is called.
It then calls 'mlx4_en_free_resources()' which does the needed resources
cleanup.

So, doing some explicit kfree in the error handling path would lead to
some double kfree.

Simplify code to avoid such a case.

Fixes: 67f8b1dcb9ee ("net/mlx4_en: Refactor the XDP forwarding rings scheme")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohv_netvsc: set master device
Stephen Hemminger [Wed, 9 May 2018 21:09:04 +0000 (14:09 -0700)]
hv_netvsc: set master device

The hyper-v transparent bonding should have used master_dev_link.
The netvsc device should look like a master bond device not
like the upper side of a tunnel.

This makes the semantics the same so that userspace applications
looking at network devices see the correct master relationshipship.

Fixes: 0c195567a8f6 ("netvsc: transparent VF management")
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'mac80211-for-davem-2018-05-09' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Thu, 10 May 2018 21:34:50 +0000 (17:34 -0400)]
Merge tag 'mac80211-for-davem-2018-05-09' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
We only have a few fixes this time:
 * WMM element validation
 * SAE timeout
 * add-BA timeout
 * docbook parsing
 * a few memory leaks in error paths
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotipc: fix one byte leak in tipc_sk_set_orig_addr()
Eric Dumazet [Wed, 9 May 2018 16:50:22 +0000 (09:50 -0700)]
tipc: fix one byte leak in tipc_sk_set_orig_addr()

sysbot/KMSAN reported an uninit-value in recvmsg() that
I tracked down to tipc_sk_set_orig_addr(), missing
srcaddr->member.scope initialization.

This patches moves srcaddr->sock.scope init to follow
fields order and ease future verifications.

BUG: KMSAN: uninit-value in copy_to_user include/linux/uaccess.h:184 [inline]
BUG: KMSAN: uninit-value in move_addr_to_user+0x32e/0x530 net/socket.c:226
CPU: 0 PID: 4549 Comm: syz-executor287 Not tainted 4.17.0-rc3+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 kmsan_internal_check_memory+0x135/0x1e0 mm/kmsan/kmsan.c:1157
 kmsan_copy_to_user+0x69/0x160 mm/kmsan/kmsan.c:1199
 copy_to_user include/linux/uaccess.h:184 [inline]
 move_addr_to_user+0x32e/0x530 net/socket.c:226
 ___sys_recvmsg+0x4e2/0x810 net/socket.c:2285
 __sys_recvmsg net/socket.c:2328 [inline]
 __do_sys_recvmsg net/socket.c:2338 [inline]
 __se_sys_recvmsg net/socket.c:2335 [inline]
 __x64_sys_recvmsg+0x325/0x460 net/socket.c:2335
 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4455e9
RSP: 002b:00007fe3bd36ddb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004455e9
RDX: 0000000000002002 RSI: 0000000020000400 RDI: 0000000000000003
RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff98ce4b6f R14: 00007fe3bd36e9c0 R15: 0000000000000003

Local variable description: ----addr@___sys_recvmsg
Variable was created at:
 ___sys_recvmsg+0xd5/0x810 net/socket.c:2246
 __sys_recvmsg net/socket.c:2328 [inline]
 __do_sys_recvmsg net/socket.c:2338 [inline]
 __se_sys_recvmsg net/socket.c:2335 [inline]
 __x64_sys_recvmsg+0x325/0x460 net/socket.c:2335

Byte 19 of 32 is uninitialized

Fixes: 31c82a2d9d51 ("tipc: add second source address to recvmsg()/recvfrom()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agotc-testing: fix tdc tests for 'bpf' action
Davide Caratti [Wed, 9 May 2018 16:45:42 +0000 (18:45 +0200)]
tc-testing: fix tdc tests for 'bpf' action

- correct a typo in the value of 'matchPattern' of test 282d, potentially
 causing false negative
- allow errors when 'teardown' executes '$TC action flush action bpf' in
 test 282d, to fix false positive when it is run with act_bpf unloaded
- correct the value of 'matchPattern' in test e939, causing false positive
 in case the BPF JIT is enabled

Fixes: 440ea4ae1828 ("tc-testing: add selftests for 'bpf' action")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Lucas Bates <lucasb@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/mlx4_en: Verify coalescing parameters are in range
Moshe Shemesh [Wed, 9 May 2018 15:35:13 +0000 (18:35 +0300)]
net/mlx4_en: Verify coalescing parameters are in range

Add check of coalescing parameters received through ethtool are within
range of values supported by the HW.
Driver gets the coalescing rx/tx-usecs and rx/tx-frames as set by the
users through ethtool. The ethtool support up to 32 bit value for each.
However, mlx4 modify cq limits the coalescing time parameter and
coalescing frames parameters to 16 bits.
Return out of range error if user tries to set these parameters to
higher values.
Change type of sample-interval and adaptive_rx_coal parameters in mlx4
driver to u32 as the ethtool holds them as u32 and these parameters are
not limited due to mlx4 HW.

Fixes: c27a02cd94d6 ('mlx4_en: Add driver for Mellanox ConnectX 10GbE NIC')
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: copy mbox log size to PF0-3 adap instances
Ganesh Goudar [Wed, 9 May 2018 13:30:35 +0000 (19:00 +0530)]
cxgb4: copy mbox log size to PF0-3 adap instances

copy mbox size to adapter instances of PF0-3 to avoid
mbox log overflow. This fixes the possible protection
fault.

Fixes: baf5086840ab ("cxgb4: restructure VF mgmt code")
Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agocxgb4: zero the HMA memory
Ganesh Goudar [Wed, 9 May 2018 13:10:09 +0000 (18:40 +0530)]
cxgb4: zero the HMA memory

firmware expects HMA memory to be zeroed, use __GFP_ZERO
for HMA memory allocation.

Fixes: 8b4e6b3ca2ed ("cxgb4: Add HMA support")
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoudp: fix SO_BINDTODEVICE
Paolo Abeni [Wed, 9 May 2018 10:42:34 +0000 (12:42 +0200)]
udp: fix SO_BINDTODEVICE

Damir reported a breakage of SO_BINDTODEVICE for UDP sockets.
In absence of VRF devices, after commit fb74c27735f0 ("net:
ipv4: add second dif to udp socket lookups") the dif mismatch
isn't fatal anymore for UDP socket lookup with non null
sk_bound_dev_if, breaking SO_BINDTODEVICE semantics.

This changeset addresses the issue making the dif match mandatory
again in the above scenario.

Reported-by: Damir Mansurov <dnman@oktetlabs.ru>
Fixes: fb74c27735f0 ("net: ipv4: add second dif to udp socket lookups")
Fixes: 1801b570dd2a ("net: ipv6: add second dif to udp socket lookups")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoipv4: reset fnhe_mtu_locked after cache route flushed
Hangbin Liu [Wed, 9 May 2018 10:06:44 +0000 (18:06 +0800)]
ipv4: reset fnhe_mtu_locked after cache route flushed

After route cache is flushed via ipv4_sysctl_rtcache_flush(), we forget
to reset fnhe_mtu_locked in rt_bind_exception(). When pmtu is updated
in __ip_rt_update_pmtu(), it will return directly since the pmtu is
still locked. e.g.

+ ip netns exec client ping 10.10.1.1 -c 1 -s 1400 -M do
PING 10.10.1.1 (10.10.1.1) 1400(1428) bytes of data.
>From 10.10.0.254 icmp_seq=1 Frag needed and DF set (mtu = 0)

Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agohv_netvsc: Fix net device attach on older Windows hosts
Mohammed Gamal [Wed, 9 May 2018 08:17:34 +0000 (10:17 +0200)]
hv_netvsc: Fix net device attach on older Windows hosts

On older windows hosts the net_device instance is returned to
the caller of rndis_filter_device_add() without having the presence
bit set first. This would cause any subsequent calls to network device
operations (e.g. MTU change, channel change) to fail after the device
is detached once, returning -ENODEV.

Instead of returning the device instabce, we take the exit path where
we call netif_device_attach()

Fixes: 7b2ee50c0cd5 ("hv_netvsc: common detach logic")
Signed-off-by: Mohammed Gamal <mgamal@redhat.com>
Reviewed-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonfp: flower: remove headroom from max MTU calculation
Pieter Jansen van Vuuren [Wed, 9 May 2018 07:18:58 +0000 (00:18 -0700)]
nfp: flower: remove headroom from max MTU calculation

Since commit 29a5dcae2790 ("nfp: flower: offload phys port MTU change") we
take encapsulation headroom into account when calculating the max allowed
MTU.  This is unnecessary as the max MTU advertised by firmware should have
already accounted for encap headroom.

Subtracting headroom twice brings the max MTU below what's necessary for
some deployments.

Fixes: 29a5dcae2790 ("nfp: flower: offload phys port MTU change")
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agonet/9p: fix spelling mistake: "suspsend" -> "suspend"
Colin Ian King [Wed, 9 May 2018 09:48:33 +0000 (10:48 +0100)]
net/9p: fix spelling mistake: "suspsend" -> "suspend"

Trivial fix to spelling mistake in dev_warn message text

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agosctp: fix spelling mistake: "max_retans" -> "max_retrans"
Colin Ian King [Tue, 8 May 2018 22:24:28 +0000 (23:24 +0100)]
sctp: fix spelling mistake: "max_retans" -> "max_retrans"

Trivial fix to spelling mistake in error string

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agofirestream: fix spelling mistake: "reseverd" -> "reserved"
Colin Ian King [Tue, 8 May 2018 22:01:51 +0000 (23:01 +0100)]
firestream: fix spelling mistake: "reseverd" -> "reserved"

Trivial fix to spelling mistake in res_strings string array

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge branch 'qed-rdma-fixes'
David S. Miller [Thu, 10 May 2018 19:22:36 +0000 (15:22 -0400)]
Merge branch 'qed-rdma-fixes'

Michal Kalderon says:

====================
qed*: Rdma fixes

This patch series include two fixes for bugs related to rdma.
The first has to do with loading the driver over an iWARP
device.
The second fixes a previous commit that added proper link
indication for iWARP / RoCE.
====================

Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
6 years agoqede: Fix gfp flags sent to rdma event node allocation
Michal Kalderon [Tue, 8 May 2018 18:29:19 +0000 (21:29 +0300)]
qede: Fix gfp flags sent to rdma event node allocation

A previous commit 4609adc27175 ("qede: Fix qedr link update")
added a flow that could allocate rdma event objects from an
interrupt path (link notification). Therefore the kzalloc call
should be done with GFP_ATOMIC.

fixes: 4609adc27175 ("qede: Fix qedr link update")
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoqed: Fix l2 initializations over iWARP personality
Michal Kalderon [Tue, 8 May 2018 18:29:18 +0000 (21:29 +0300)]
qed: Fix l2 initializations over iWARP personality

If qede driver was loaded on a device configured for iWARP
the l2 mutex wouldn't be allocated, and some l2 related
resources wouldn't be freed.

fixes: c851a9dc4359 ("qed: Introduce iWARP personality")
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Sudarsana Kalluru <Sudarsana.Kalluru@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
6 years agoMerge tag 'for-4.17/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device...
Linus Torvalds [Thu, 10 May 2018 18:42:01 +0000 (11:42 -0700)]
Merge tag 'for-4.17/dm-fixes' of git://git./linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - a stable fix for DM integrity to use kvfree

 - fix for a 4.17-rc1 change to dm-bufio's buffer alignment

 - fixes for a few sparse warnings

 - remove VLA usage in DM mirror target

 - improve DM thinp Documentation for the "read_only" feature

* tag 'for-4.17/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm thin: update Documentation to clarify when "read_only" is valid
  dm mirror: remove VLA usage
  dm: fix some sparse warnings and whitespace in dax methods
  dm cache background tracker: fix sparse warning
  dm bufio: fix buffer alignment
  dm integrity: use kvfree for kvmalloc'd memory

6 years agocan: hi311x: Work around TX complete interrupt erratum
Lukas Wunner [Wed, 9 May 2018 12:43:43 +0000 (14:43 +0200)]
can: hi311x: Work around TX complete interrupt erratum

When sending packets as fast as possible using "cangen -g 0 -i -x", the
HI-3110 occasionally latches the interrupt pin high on completion of a
packet, but doesn't set the TXCPLT bit in the INTF register.  The INTF
register contains 0x00 as if no interrupt has occurred.  Even waiting
for a few milliseconds after the interrupt doesn't help.

Work around this apparent erratum by instead checking the TXMTY bit in
the STATF register ("TX FIFO empty").  We know that we've queued up a
packet for transmission if priv->tx_len is nonzero.  If the TX FIFO is
empty, transmission of that packet must have completed.

Note that this is congruent with our handling of received packets, which
likewise gleans from the STATF register whether a packet is waiting in
the RX FIFO, instead of looking at the INTF register.

Cc: Mathias Duckeck <m.duckeck@kunbus.de>
Cc: Akshay Bhat <akshay.bhat@timesys.com>
Cc: Casey Fitzpatrick <casey.fitzpatrick@timesys.com>
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
6 years agocan: hi311x: Acquire SPI lock on ->do_get_berr_counter
Lukas Wunner [Wed, 9 May 2018 12:38:43 +0000 (14:38 +0200)]
can: hi311x: Acquire SPI lock on ->do_get_berr_counter

hi3110_get_berr_counter() may run concurrently to the rest of the driver
but neglects to acquire the lock protecting access to the SPI device.
As a result, it and the rest of the driver may clobber each other's tx
and rx buffers.

We became aware of this issue because transmission of packets with
"cangen -g 0 -i -x" frequently hung.  It turns out that agetty executes
->do_get_berr_counter every few seconds via the following call stack:

    CPU: 2 PID: 1605 Comm: agetty
    [<7f3f7500>] (hi3110_get_berr_counter [hi311x])
    [<7f130204>] (can_fill_info [can_dev])
    [<80693bc0>] (rtnl_fill_ifinfo)
    [<806949ec>] (rtnl_dump_ifinfo)
    [<806b4834>] (netlink_dump)
    [<806b4bc8>] (netlink_recvmsg)
    [<8065f180>] (sock_recvmsg)
    [<80660f90>] (___sys_recvmsg)
    [<80661e7c>] (__sys_recvmsg)
    [<80661ec0>] (SyS_recvmsg)
    [<80108b20>] (ret_fast_syscall+0x0/0x1c)

agetty listens to netlink messages in order to update the login prompt
when IP addresses change (if /etc/issue contains \4 or \6 escape codes):
https://git.kernel.org/pub/scm/utils/util-linux/util-linux.git/commit/?id=e36deb6424e8

It's a useful feature, though it seems questionable that it causes CAN
bit error statistics to be queried.

Be that as it may, if hi3110_get_berr_counter() is invoked while a frame
is sent by hi3110_hw_tx(), bogus SPI transfers like the following may
occur:

    => 12 00             (hi3110_get_berr_counter() wanted to transmit
                          EC 00 to query the transmit error counter,
                          but the first byte was overwritten by
                          hi3110_hw_tx_frame())

    => EA 00 3E 80 01 FB (hi3110_hw_tx_frame() wanted to transmit a
                          frame, but the first byte was overwritten by
                          hi3110_get_berr_counter() because it wanted
                          to query the receive error counter)

This sequence hangs the transmission because the driver believes it has
sent a frame and waits for the interrupt signaling completion, but in
reality the chip has never sent away the frame since the commands it
received were malformed.

Fix by acquiring the SPI lock in hi3110_get_berr_counter().

I've scrutinized the entire driver for further unlocked SPI accesses but
found no others.

Cc: Mathias Duckeck <m.duckeck@kunbus.de>
Cc: Akshay Bhat <akshay.bhat@timesys.com>
Cc: Casey Fitzpatrick <casey.fitzpatrick@timesys.com>
Cc: Stef Walter <stefw@redhat.com>
Cc: Karel Zak <kzak@redhat.com>
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Akshay Bhat <akshay.bhat@timesys.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
6 years agodm thin: update Documentation to clarify when "read_only" is valid
Mike Snitzer [Thu, 10 May 2018 15:18:49 +0000 (11:18 -0400)]
dm thin: update Documentation to clarify when "read_only" is valid

Due to user confusion, clarify that it doesn't make sense to try to
create a thin-pool with "read_only" mode enabled.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
6 years agoPCI / PM: Check device_may_wakeup() in pci_enable_wake()
Rafael J. Wysocki [Tue, 8 May 2018 22:18:32 +0000 (00:18 +0200)]
PCI / PM: Check device_may_wakeup() in pci_enable_wake()

Commit 0847684cfc5f0 (PCI / PM: Simplify device wakeup settings code)
went too far and dropped the device_may_wakeup() check from
pci_enable_wake() which causes wakeup to be enabled during system
suspend, hibernation or shutdown for some PCI devices that are not
allowed by user space to wake up the system from sleep (or power off).

As a result of this, excessive power is drawn by some of the affected
systems while in sleep states or off.

Restore the device_may_wakeup() check in pci_enable_wake(), but make
sure that the PCI bus type's runtime suspend callback will not call
device_may_wakeup() which is about system wakeup from sleep and not
about device wakeup from runtime suspend.

Fixes: 0847684cfc5f0 (PCI / PM: Simplify device wakeup settings code)
Reported-by: Joseph Salisbury <joseph.salisbury@canonical.com>
Cc: 4.13+ <stable@vger.kernel.org> # 4.13+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
6 years agodrm/amd/pp: Fix performance drop on Fiji
Rex Zhu [Thu, 10 May 2018 11:51:09 +0000 (19:51 +0800)]
drm/amd/pp: Fix performance drop on Fiji

The performance drop if the default TDP more than 256 Watt

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
6 years agotipc: eliminate KMSAN uninit-value in strcmp complaint
Ying Xue [Tue, 8 May 2018 13:44:06 +0000 (21:44 +0800)]
tipc: eliminate KMSAN uninit-value in strcmp complaint

When we get link properties through netlink interface with
tipc_nl_node_get_link(), we don't validate TIPC_NLA_LINK_NAME
attribute at all, instead we directly use it. As a consequence,
KMSAN detected the TIPC_NLA_LINK_NAME attribute was an uninitialized
value, and then posted the following complaint:

==================================================================
BUG: KMSAN: uninit-value in strcmp+0xf7/0x160 lib/string.c:329
CPU: 1 PID: 4527 Comm: syz-executor655 Not tainted 4.16.0+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
  __dump_stack lib/dump_stack.c:17 [inline]
  dump_stack+0x185/0x1d0 lib/dump_stack.c:53
  kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
  __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683
  strcmp+0xf7/0x160 lib/string.c:329
  tipc_nl_node_get_link+0x220/0x6f0 net/tipc/node.c:1881
  genl_family_rcv_msg net/netlink/genetlink.c:599 [inline]
  genl_rcv_msg+0x1686/0x1810 net/netlink/genetlink.c:624
  netlink_rcv_skb+0x378/0x600 net/netlink/af_netlink.c:2447
  genl_rcv+0x63/0x80 net/netlink/genetlink.c:635
  netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
  netlink_unicast+0x166b/0x1740 net/netlink/af_netlink.c:1337
  netlink_sendmsg+0x1048/0x1310 net/netlink/af_netlink.c:1900
  sock_sendmsg_nosec net/socket.c:630 [inline]
  sock_sendmsg net/socket.c:640 [inline]
  ___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
  __sys_sendmsg net/socket.c:2080 [inline]
  SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
  SyS_sendmsg+0x54/0x80 net/socket.c:2087
  do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x445589
RSP: 002b:00007fb7ee66cdb8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445589
RDX: 0000000000000000 RSI: 0000000020023000 RDI: 0000000000000003
RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa2bf3f3f R14: 00007fb7ee66d9c0 R15: 0000000000000001

Uninit was created at:
  kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
  kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
  kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
  kmsan_slab_alloc+0x11/0x20 mm/kmsan/kmsan.c:321
  slab_post_alloc_hook mm/slab.h:445 [inline]
  slab_alloc_node mm/slub.c:2737 [inline]
  __kmalloc_node_track_caller+0xaed/0x11c0 mm/slub.c:4369
  __kmalloc_reserve net/core/skbuff.c:138 [inline]
  __alloc_skb+0x2cf/0x9f0 net/core/skbuff.c:206
  alloc_skb include/linux/skbuff.h:984 [inline]
  netlink_alloc_large_skb net/netlink/af_netlink.c:1183 [inline]
  netlink_sendmsg+0x9a6/0x1310 net/netlink/af_netlink.c:1875
  sock_sendmsg_nosec net/socket.c:630 [inline]
  sock_sendmsg net/socket.c:640 [inline]
  ___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
  __sys_sendmsg net/socket.c:2080 [inline]
  SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
  SyS_sendmsg+0x54/0x80 net/socket.c:2087
  do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
  entry_SYSCALL_64_after_hwframe+0x3d/0xa2
==================================================================

To quiet the complaint, TIPC_NLA_LINK_NAME attribute has been
validated in tipc_nl_node_get_link() before it's used.

Reported-by: syzbot+df0257c92ffd4fcc58cd@syzkaller.appspotmail.com
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>