tree 104c7b01768acd7e152cbf66e4868a73804e8af9
parent fc09561d6392771a392dea55c287de7e849b6b63
author Kirill Korotaev <dev@sw.ru> 1159520405 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1159546692 -0700

[PATCH] Fix unserialized task->files changing

Fixed race on put_files_struct on exec with proc.  Restoring files on
current on error path may lead to proc having a pointer to already kfree-d
files_struct.

->files changing at exit.c and khtread.c are safe as exit_files() makes all
things under lock.

Found during OpenVZ stress testing.

[akpm@osdl.org: add export]
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>