From: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx> Date: Fri, 12 Dec 2008 17:51:43 -0800 Subject: [PATCH] SEND_SIG_NOINFO: Masquerade si_pid when crossing pid-ns boundary For SEND_SIG_NOINFO, si_pid is currently set to the pid of sender in sender's active pid namespace. But if the receiver is in a different namespace, that given pid number would be incorrect. Eg: when parent sends the 'pdeath_signal' to a child that is in a descendant pid namespace, we should set si_pid 0. Changelog[v2] - Moved change from task_pid() to task_tgid() to separate patch Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx> --- kernel/signal.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/kernel/signal.c b/kernel/signal.c index 2a64304..d11e5f8 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -856,7 +856,8 @@ static int send_signal(int sig, struct siginfo *info, struct task_struct *t, q->info.si_signo = sig; q->info.si_errno = 0; q->info.si_code = SI_USER; - q->info.si_pid = task_pid_vnr(current); + q->info.si_pid = task_pid_nr_ns(current, + task_active_pid_ns(t)); q->info.si_uid = current_uid(); break; case (unsigned long) SEND_SIG_PRIV: -- 1.5.2.5 _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
