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| author | Eric W. Biederman <ebiederm@xmission.com> | 2018-07-20 16:35:14 -0500 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2018-09-16 16:08:25 +0200 |
| commit | 82058d6684658430cd9b4123d4c3e863fd48f813 (patch) | |
| tree | ed23a1c404f61b6dc0d5408208835817ff335ee9 | |
| parent | a8ebd17160ce364fac6647f223991a8f2f1924b9 (diff) | |
| download | linux-82058d6684658430cd9b4123d4c3e863fd48f813.tar.bz2 | |
signal: Use group_send_sig_info to kill all processes in a pid namespace
Replace send_sig_info in zap_pid_ns_processes with
group_send_sig_info. This makes more sense as the entire process
group is being killed. More importantly this allows the kill of those
processes with PIDTYPE_MAX to indicate all of the process in the pid
namespace are being signaled. This is needed for fork to detect when
signals are sent to a group of processes.
Admittedly fork has another case to catch SIGKILL but the principle remains
that it is desirable to know when a group of processes is being signaled.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
| -rw-r--r-- | kernel/pid_namespace.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index c8d53397bbdd..aa6e72fb7c08 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -216,7 +216,7 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns) idr_for_each_entry_continue(&pid_ns->idr, pid, nr) { task = pid_task(pid, PIDTYPE_PID); if (task && !__fatal_signal_pending(task)) - send_sig_info(SIGKILL, SEND_SIG_PRIV, task); + group_send_sig_info(SIGKILL, SEND_SIG_PRIV, task, PIDTYPE_MAX); } read_unlock(&tasklist_lock); rcu_read_unlock(); |