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| author | Max Filippov <jcmvbkbc@gmail.com> | 2018-01-05 14:27:58 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-02-17 13:21:19 +0100 |
| commit | 2d4e295284a9614726cf02b3da1bb2591ec60770 (patch) | |
| tree | 9aaf737678b85c4517e94f03291101e43df09e15 /drivers/clocksource/timer-stm32.c | |
| parent | 71611b37cca4982da64d1807ab54749826628805 (diff) | |
xtensa: fix futex_atomic_cmpxchg_inatomic
commit ca47480921587ae30417dd234a9f79af188e3666 upstream.
Return 0 if the operation was successful, not the userspace memory
value. Check that userspace value equals passed oldval, not itself.
Don't update *uval if the value wasn't read from userspace memory.
This fixes process hang due to infinite loop in futex_lock_pi.
It also fixes a bunch of glibc tests nptl/tst-mutexpi*.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/clocksource/timer-stm32.c')
0 files changed, 0 insertions, 0 deletions