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| author | Yi Zhang <yi.zhang@redhat.com> | 2025-04-23 13:32:28 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-19 15:31:45 +0200 |
| commit | 6589bc3699bcb45b35b3095c44a5af7a4d75ef7e (patch) | |
| tree | d2529a703eb81f0188e81ef5d2c43c0fdfe8de6b /tools/lib/bpf/linker.c | |
| parent | 4248ba53e4712539ecb75e5961c71e85c4bd99ab (diff) | |
scsi: smartpqi: Fix smp_processor_id() call trace for preemptible kernels
[ Upstream commit 42d033cf4b517e91c187ad2fbd7b30fdc6d2d62c ]
Correct kernel call trace when calling smp_processor_id() when called in
preemptible kernels by using raw_smp_processor_id().
smp_processor_id() checks to see if preemption is disabled and if not,
issue an error message followed by a call to dump_stack().
Brief example of call trace:
kernel: check_preemption_disabled: 436 callbacks suppressed
kernel: BUG: using smp_processor_id() in preemptible [00000000]
code: kworker/u1025:0/2354
kernel: caller is pqi_scsi_queue_command+0x183/0x310 [smartpqi]
kernel: CPU: 129 PID: 2354 Comm: kworker/u1025:0
kernel: ...
kernel: Workqueue: writeback wb_workfn (flush-253:0)
kernel: Call Trace:
kernel: <TASK>
kernel: dump_stack_lvl+0x34/0x48
kernel: check_preemption_disabled+0xdd/0xe0
kernel: pqi_scsi_queue_command+0x183/0x310 [smartpqi]
kernel: ...
Fixes: 283dcc1b142e ("scsi: smartpqi: add counter for parity write stream requests")
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com>
Tested-by: Don Brace <don.brace@microchip.com>
Signed-off-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/20250423183229.538572-5-don.brace@microchip.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'tools/lib/bpf/linker.c')
0 files changed, 0 insertions, 0 deletions