path: root/kernel
diff options
authorOleg Nesterov <>2009-04-02 16:58:16 -0700
committerLinus Torvalds <>2009-04-02 19:04:59 -0700
commitb1442b055c154699a6a2c436f3352f71b6beede3 (patch)
treedda315fddb15936bc74eb9c74bec29b64e65b71c /kernel
parent0a967a044a777e8b9c739120927114ddc0094298 (diff)
reparent_thread: fix the "is it traced" check
reparent_thread() uses ptrace_reparented() to check whether this thread is ptraced, in that case we should not notify the new parent. But ptrace_reparented() is not exactly correct when the reparented thread is traced by /sbin/init, because forget_original_parent() has already changed ->real_parent. Currently, the only problem is the false notification. But with the next patch the kernel crash in this (yes, pathological) case. Signed-off-by: Oleg Nesterov <> Cc: Roland McGrath <> Cc: "Eric W. Biederman" <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'kernel')
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/exit.c b/kernel/exit.c
index 405e6877168b..5be0a406faeb 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -832,7 +832,7 @@ static void reparent_thread(struct task_struct *p, struct task_struct *father)
/* If we'd notified the old parent about this child's death,
* also notify the new parent.
- if (!ptrace_reparented(p) &&
+ if (!p->ptrace &&
p->exit_state == EXIT_ZOMBIE && thread_group_empty(p))
do_notify_parent(p, p->exit_signal);