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[PATCH] avoid resursive oopses 

Prevent recursive faults in do_exit() by leaving the task alone and wait
for reboot.  This may allow a more graceful shutdown and possibly save the
original oops.

Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alexander Nyberg 2005-06-23 00:09:13 -07:00 committed by Linus Torvalds
parent 5f45f1a78f
commit df164db5fd
1 changed files with 11 additions and 0 deletions
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kernel/exit.c
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@ -793,6 +793,17 @@ fastcall NORET_TYPE void do_exit(long code)
ptrace_notify((PTRACE_EVENT_EXIT << 8) | SIGTRAP);
}
/*
* We're taking recursive faults here in do_exit. Safest is to just
* leave this task alone and wait for reboot.
*/
if (unlikely(tsk->flags & PF_EXITING)) {
printk(KERN_ALERT
"Fixing recursive fault but reboot is needed!\n");
set_current_state(TASK_UNINTERRUPTIBLE);
schedule();
}
tsk->flags |= PF_EXITING;
/*