From: Linus Torvalds <torvalds@osdl.org>
Date: Sat, 18 Jun 2005 20:17:49 +0000 (-0700)
Subject: [PATCH] Clean up subthread exec (CAN-2005-1913)
X-Git-Tag: v2.6.12.1~2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=fe3d5c8793fcaf33c5d3118a7f3ffc135eadaf4d;p=karo-tx-linux.git

[PATCH] Clean up subthread exec (CAN-2005-1913)

Make sure we re-parent itimers.  If subthread exec's with timer pending,
signal is delivered to old group-leader and can panic kernel.

Signed-off-by: Linus Torvalds <torvalds@ppc970.osdl.org>
Signed-off-by: Chris Wright <chrisw@osdl.org>
---

diff --git a/fs/exec.c b/fs/exec.c
index e56ee2437025..422cc0ec5e36 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -649,6 +649,7 @@ static inline int de_thread(struct task_struct *tsk)
 	}
 	sig->group_exit_task = NULL;
 	sig->notify_count = 0;
+	sig->real_timer.data = (unsigned long)current;
 	spin_unlock_irq(lock);
 
 	/*