tree 09b95edbd9c160962027a9b3dcbf3cb7fc7a2b90
parent 2f51201662b28dbf8c15fb7eb972bc51c6cc3fa5
author Oleg Nesterov <oleg@tv-sign.ru> 1130713337 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> 1130722639 -0800

[PATCH] fix de_thread vs it_real_fn() deadlock

de_thread() calls del_timer_sync(->real_timer) under ->sighand->siglock.
This is deadlockable, it_real_fn sends a signal and needs this lock too.

Also, delete unneeded ->real_timer.data assignment.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>