about summary refs log tree commit diff
path: root/manual
diff options
context:
space:
mode:
authorSiddhesh Poyarekar <siddhesh@redhat.com>2012-10-05 18:52:35 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2012-10-05 18:52:36 +0530
commitc30e8edf7c56e55a81173da39f3e721ab17b9db6 (patch)
treecff2d492fe0d34bf49af97371eb4260cb193ae3d /manual
parentc2b598a94512c5d754b25c77399032e87c1f2dd5 (diff)
downloadglibc-c30e8edf7c56e55a81173da39f3e721ab17b9db6.tar.gz
glibc-c30e8edf7c56e55a81173da39f3e721ab17b9db6.tar.xz
glibc-c30e8edf7c56e55a81173da39f3e721ab17b9db6.zip
Unlock mutex before going back to waiting for PI mutexes
[BZ #14417]
A futex call with FUTEX_WAIT_REQUEUE_PI returns with the mutex locked
on success.  If such a successful thread is pipped to the cond_lock by
another spuriously woken waiter, it could be sent back to wait on the
futex with the mutex lock held, thus causing a deadlock.  So it is
necessary that the thread relinquishes the mutex before going back to
sleep.
Diffstat (limited to 'manual')
0 files changed, 0 insertions, 0 deletions