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| author | Thomas Gleixner <[email protected]> | 2017-07-24 10:52:56 +0000 |
|---|---|---|
| committer | Martin K. Petersen <[email protected]> | 2017-07-27 01:51:24 +0000 |
| commit | 8addebc14a322fa8ca67cd57c6038069acde8ddc (patch) | |
| tree | 3fb5ee2628099fb5a7159e61d1acbcff180002ed /tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py | |
| parent | scsi: qedi: Fix return code in qedi_ep_connect() (diff) | |
| download | kernel-8addebc14a322fa8ca67cd57c6038069acde8ddc.tar.gz kernel-8addebc14a322fa8ca67cd57c6038069acde8ddc.zip | |
scsi: bnx2fc: Plug CPU hotplug race
bnx2fc_process_new_cqes() has protection against CPU hotplug, which relies
on the per cpu thread pointer. This protection is racy because it happens
only partially with the per cpu fp_work_lock held.
If the CPU is unplugged after the lock is dropped, the wakeup code can
dereference a NULL pointer or access freed and potentially reused memory.
Restructure the code so the thread check and wakeup happens with the
fp_work_lock held.
Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Chad Dupuis <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/EventClass.py')
0 files changed, 0 insertions, 0 deletions