-stable review patch. If anyone has any objections, please let us know.
------------------
This bug is quite subtle and only happens in a very interesting
situation where a real-time threaded process is in the middle of a
coredump when someone whacks it with a SIGKILL. However, this deadlock
leaves the system pretty hosed and you have to reboot to recover.
Not good for real-time priority-preemption applications like our
telephony application, with 90+ real-time (SCHED_FIFO and SCHED_RR)
processes, many of them multi-threaded, interacting with each other for
high volume call processing.
Acked-by: Roland McGrath <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Chris Wright <[email protected]>
---
kernel/signal.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.12.y/kernel/signal.c
===================================================================
--- linux-2.6.12.y.orig/kernel/signal.c
+++ linux-2.6.12.y/kernel/signal.c
@@ -686,7 +686,7 @@ static void handle_stop_signal(int sig,
{
struct task_struct *t;
- if (p->flags & SIGNAL_GROUP_EXIT)
+ if (p->signal->flags & SIGNAL_GROUP_EXIT)
/*
* The process is in the middle of dying already.
*/
--
-
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