[PATCH 12/41] microblaze: Don't reimplement force_sigsegv()

[Matt Fleming]

From: Matt Fleming <matt.fleming@xxxxxxxxx>

Instead of open coding the sequence from force_sigsegv() just call
it. This also fixes a race because sa_handler was being modified
without holding ->sighand->siglock.

Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Michal Simek <monstr@xxxxxxxxx>
Signed-off-by: Matt Fleming <matt.fleming@xxxxxxxxx>
---
 arch/microblaze/kernel/signal.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index 5996711..90de06d 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -270,9 +270,7 @@ static void setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
 	return;
 
 give_sigsegv:
-	if (sig == SIGSEGV)
-		ka->sa.sa_handler = SIG_DFL;
-	force_sig(SIGSEGV, current);
+	force_sigsegv(sig, current);
 }
 
 /* Handle restarting system calls */
-- 
1.7.4.4

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