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| author | Sebastian Andrzej Siewior <[email protected]> | 2019-07-03 09:21:26 +0000 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2019-07-25 13:39:27 +0000 |
| commit | 6c11c6e3d5e9e5caf8686cd6a5e4552cfc3ea326 (patch) | |
| tree | 3c46421fccf883ceb83abb0b2f42a1a0c662a26b /tools/perf/scripts/python/stat-cpi.py | |
| parent | locking/lockdep: Clean up #ifdef checks (diff) | |
| download | kernel-6c11c6e3d5e9e5caf8686cd6a5e4552cfc3ea326.tar.gz kernel-6c11c6e3d5e9e5caf8686cd6a5e4552cfc3ea326.zip | |
locking/mutex: Test for initialized mutex
An uninitialized/ zeroed mutex will go unnoticed because there is no
check for it. There is a magic check in the unlock's slowpath path which
might go unnoticed if the unlock happens in the fastpath.
Add a ->magic check early in the mutex_lock() and mutex_trylock() path.
Signed-off-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Will Deacon <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stat-cpi.py')
0 files changed, 0 insertions, 0 deletions