tree 5a5d88930380da8994525da361c9c8114ebf82fc
parent ecb08d81313a3c015225236775de259d99ab47fe
author Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> 1231281765 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1231286368 -0800

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
Eg: when parent sends the 'pdeath_signal' to a child that is in
a descendant pid namespace, we should set si_pid 0.

Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-By: Roland McGrath <roland@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>