tree b35f29814b46593d864e8c8921e9eccac5a5a173
parent c8e85b4f4b9ee23bf0e79bdeb3da274a0f9c663f
author Oleg Nesterov <oleg@tv-sign.ru> 1211820942 +0400
committer Linus Torvalds <torvalds@linux-foundation.org> 1211823427 -0700

posix timers: discard SI_TIMER signals on exec

Based on Roland's patch. This approach was suggested by Austin Clements
from the very beginning, and then by Linus.

As Austin pointed out, the execing task can be killed by SI_TIMER signal
because exec flushes the signal handlers, but doesn't discard the pending
signals generated by posix timers. Perhaps not a bug, but people find this
surprising. See http://bugzilla.kernel.org/show_bug.cgi?id=10460

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Austin Clements <amdragon+kernelbugzilla@mit.edu>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>