[PATCH 1/2] signals: sys_ssetmask() uses uninitialized newmask

[Oleg Nesterov]

77097ae5 "most of set_current_blocked() callers want SIGKILL/SIGSTOP
removed from set" removed the initialization of newmask by accident,
restore.

Reported-by: CAI Qian <caiqian@xxxxxxxxxx>
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: stable@xxxxxxxxxx	# v3.5+
---
 kernel/signal.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index 7aaa51d..9692499 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3286,6 +3286,7 @@ SYSCALL_DEFINE1(ssetmask, int, newmask)
 	int old = current->blocked.sig[0];
 	sigset_t newset;
 
+	siginitset(&newset, newmask);
 	set_current_blocked(&newset);
 
 	return old;
-- 
1.5.5.1


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