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authorSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>2009-04-02 16:58:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-02 19:04:58 -0700
commite4da026f980df125a4918c3bb9fe93185c7ef12a (patch)
treebb755bb687bca82feb05ba3bb6962ef57257dd9a /fs/devpts
parent921cf9f63089c7442d44083477620132f4cea066 (diff)
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signals: zap_pid_ns_process() should use force_sig()
send_signal() assumes that signals with SEND_SIG_PRIV are generated from within the same namespace. So any nested container-init processes become immune to the SIGKILL generated by kill_proc_info() in zap_pid_ns_processes(). Use force_sig() in zap_pid_ns_processes() instead - force_sig() clears the SIGNAL_UNKILLABLE flag ensuring the signal is processed by container-inits. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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