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16 September 2024, 20:19:31 UTC
Revision 962b564cf1ec8041e8890a3c3847e3a630a08f42 authored by Oleg Nesterov on 23 November 2005, 21:37:43 UTC, committed by Linus Torvalds on 24 November 2005, 00:08:39 UTC 
[PATCH] fix do_wait() vs exec() race
 
When non-leader thread does exec, de_thread adds old leader to the init's
->children list in EXIT_ZOMBIE state and drops tasklist_lock.

This means that release_task(leader) in de_thread() is racy vs do_wait()
from init task.

I think de_thread() should set old leader's state to EXIT_DEAD instead.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: george anzinger <george@mvista.com>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
1 parent 8bf1101
History
Tip revision: 962b564cf1ec8041e8890a3c3847e3a630a08f42 authored by Oleg Nesterov on 23 November 2005, 21:37:43 UTC
[PATCH] fix do_wait() vs exec() race
Tip revision: 962b564
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