tree 5e874b98b6f16ca1f376f5e4bd480da7ae5143b6
parent 246bb0b1deb29726990620d8b5e55ca29f331362
author Oleg Nesterov <oleg@tv-sign.ru> 1216975659 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1217008419 -0700

coredump: zap_threads() must skip kernel threads

The main loop in zap_threads() must skip kthreads which may use the same
mm.  Otherwise we "kill" this thread erroneously (for example, it can not
fork or exec after that), and the coredumping task stucks in the
TASK_UNINTERRUPTIBLE state forever because of the wrong ->core_waiters
count.

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