tree d8083c3415d540adb7983bd23a80fb8420fa8414
parent ade6648b3b11a5d81f6f28135193ab6d85d621db
author Bhavesh P. Davda <bhavesh@avaya.com> 1124303193 -0600
committer Linus Torvalds <torvalds@g5.osdl.org> 1124308324 -0700

[PATCH] NPTL signal delivery deadlock fix

This bug is quite subtle and only happens in a very interesting
situation where a real-time threaded process is in the middle of a
coredump when someone whacks it with a SIGKILL.  However, this deadlock
leaves the system pretty hosed and you have to reboot to recover.

Not good for real-time priority-preemption applications like our
telephony application, with 90+ real-time (SCHED_FIFO and SCHED_RR)
processes, many of them multi-threaded, interacting with each other for
high volume call processing.

Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>