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| H A D | pid_namespace.c | diff d23082257d83e4bc89727d5aedee197e907999d2 Wed Apr 02 10:45:05 CDT 2014 Oleg Nesterov <oleg@redhat.com> pid_namespace: pidns_get() should check task_active_pid_ns() != NULL
pidns_get()->get_pid_ns() can hit ns == NULL. This task_struct can't
go away, but task_active_pid_ns(task) is NULL if release_task(task)
was already called. Alternatively we could change get_pid_ns(ns) to
check ns != NULL, but it seems that other callers are fine.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: Eric W. Biederman ebiederm@xmission.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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