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Leonid Ravich fa8a2f3be7 IB/mad: Don't call to function that might sleep while in atomic context 
[ Upstream commit 5c20311d76 ]

Tracepoints are not allowed to sleep, as such the following splat is
generated due to call to ib_query_pkey() in atomic context.

WARNING: CPU: 0 PID: 1888000 at kernel/trace/ring_buffer.c:2492 rb_commit+0xc1/0x220
CPU: 0 PID: 1888000 Comm: kworker/u9:0 Kdump: loaded Tainted: G           OE    --------- -  - 4.18.0-305.3.1.el8.x86_64 #1
 Hardware name: Red Hat KVM, BIOS 1.13.0-2.module_el8.3.0+555+a55c8938 04/01/2014
 Workqueue: ib-comp-unb-wq ib_cq_poll_work [ib_core]
 RIP: 0010:rb_commit+0xc1/0x220
 RSP: 0000:ffffa8ac80f9bca0 EFLAGS: 00010202
 RAX: ffff8951c7c01300 RBX: ffff8951c7c14a00 RCX: 0000000000000246
 RDX: ffff8951c707c000 RSI: ffff8951c707c57c RDI: ffff8951c7c14a00
 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
 R10: ffff8951c7c01300 R11: 0000000000000001 R12: 0000000000000246
 R13: 0000000000000000 R14: ffffffff964c70c0 R15: 0000000000000000
 FS:  0000000000000000(0000) GS:ffff8951fbc00000(0000) knlGS:0000000000000000
 CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 CR2: 00007f20e8f39010 CR3: 000000002ca10005 CR4: 0000000000170ef0
 Call Trace:
  ring_buffer_unlock_commit+0x1d/0xa0
  trace_buffer_unlock_commit_regs+0x3b/0x1b0
  trace_event_buffer_commit+0x67/0x1d0
  trace_event_raw_event_ib_mad_recv_done_handler+0x11c/0x160 [ib_core]
  ib_mad_recv_done+0x48b/0xc10 [ib_core]
  ? trace_event_raw_event_cq_poll+0x6f/0xb0 [ib_core]
  __ib_process_cq+0x91/0x1c0 [ib_core]
  ib_cq_poll_work+0x26/0x80 [ib_core]
  process_one_work+0x1a7/0x360
  ? create_worker+0x1a0/0x1a0
  worker_thread+0x30/0x390
  ? create_worker+0x1a0/0x1a0
  kthread+0x116/0x130
  ? kthread_flush_work_fn+0x10/0x10
  ret_from_fork+0x35/0x40
 ---[ end trace 78ba8509d3830a16 ]---

Fixes: 821bf1de45 ("IB/MAD: Add recv path trace point")
Signed-off-by: Leonid Ravich <lravich@gmail.com>
Link: https://lore.kernel.org/r/Y2t5feomyznrVj7V@leonid-Inspiron-3421
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:32:32 +01:00
..
acpi ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init() 2022-10-13 20:40:09 +02:00
asm-generic 15 hotfixes. 11 marked cc:stable. Only three or four of the latter 2022-12-02 13:39:38 -08:00
clocksource
crypto
drm drm/ttm: fix undefined behavior in bit shift for TTM_TT_FLAG_PRIV_POPULATED 2022-12-31 13:32:06 +01:00
dt-bindings clk: imx: rename video_pll1 to video_pll 2022-12-31 13:32:16 +01:00
keys
kunit
kvm
linux fortify: Do not cast to "unsigned char" 2022-12-31 13:32:31 +01:00
math-emu
media media fixes for v6.1-rc2 2022-10-22 15:30:15 -07:00
memory
misc
net ipvs: use u64_stats_t for the per-cpu counters 2022-12-31 13:32:26 +01:00
pcmcia
ras
rdma
rv
scsi
soc ARM: at91: pm: avoid soft resetting AC DLL 2022-11-01 12:25:19 +02:00
sound ALSA: pcm: fix undefined behavior in bit shift for SNDRV_PCM_RATE_KNOT 2022-12-31 13:32:14 +01:00
target
trace IB/mad: Don't call to function that might sleep while in atomic context 2022-12-31 13:32:32 +01:00
uapi ALSA: seq: fix undefined behavior in bit shift for SNDRV_SEQ_FILTER_USE_EVENT 2022-12-31 13:32:14 +01:00
ufs
vdso
video
xen