sukadev@xxxxxxxxxxxxxxxxxx writes: >>From d92b4befe07c6a1e852e4462126a5443342448cd Mon Sep 17 00:00:00 2001 > From: Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx> > Date: Tue, 21 Oct 2008 18:00:01 -0700 > Subject: [PATCH] kill sig -1 must only apply to callers namespace > > Currently "kill <sig> -1" kills processes in all namespaces and breaks the > isolation of namespaces. Earlier attempt to fix this is discussed at: > > http://lkml.org/lkml/2008/7/23/148 > > but nothing seems to have happened since then. Ugh. I thought that conversation had resolved the problem and gotten a patch in. This patch works because pid_vnr returns 0 for processes outside of the current pid namespace. > This patch uses the simple fix suggested by Oleg Nesterov. > > Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxx> Acked-by: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> > --- > kernel/signal.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deletions(-) > > diff --git a/kernel/signal.c b/kernel/signal.c > index 105217d..4530fc6 100644 > --- a/kernel/signal.c > +++ b/kernel/signal.c > @@ -1144,7 +1144,8 @@ static int kill_something_info(int sig, struct siginfo > *info, pid_t pid) > struct task_struct * p; > > for_each_process(p) { > - if (p->pid > 1 && !same_thread_group(p, current)) { > + if (task_pid_vnr(p) > 1 && > + !same_thread_group(p, current)) { > int err = group_send_sig_info(sig, info, p); > ++count; > if (err != -EPERM) > -- > 1.5.2.5 _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers