---

yaml --- r: 42800 b: refs/heads/master c: fec1d01 h: refs/heads/master v: v3
git-mirror · Dec 7, 2006 · d53707d · d53707d
1 parent 017aeb3
commit d53707d
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Showing 2 changed files with 11 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 736c4b8572ac24b1e6fd58d00872305a120ac700
+refs/heads/master: fec1d0115240593b39898289e6e1413ea6e44a84
diff --git a/trunk/kernel/fork.c b/trunk/kernel/fork.c
@@ -448,7 +448,16 @@ void mm_release(struct task_struct *tsk, struct mm_struct *mm)
 		tsk->vfork_done = NULL;
 		complete(vfork_done);
 	}
-	if (tsk->clear_child_tid && atomic_read(&mm->mm_users) > 1) {
+
+	/*
+	 * If we're exiting normally, clear a user-space tid field if
+	 * requested.  We leave this alone when dying by signal, to leave
+	 * the value intact in a core dump, and to save the unnecessary
+	 * trouble otherwise.  Userland only wants this done for a sys_exit.
+	 */
+	if (tsk->clear_child_tid
+	    && !(tsk->flags & PF_SIGNALED)
+	    && atomic_read(&mm->mm_users) > 1) {
 		u32 __user * tidptr = tsk->clear_child_tid;
 		tsk->clear_child_tid = NULL;