From f6adb9a6aec0ec9540e15f354e5cdec88b2aea33 Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Fri, 23 Mar 2012 15:01:49 -0700 Subject: [PATCH] um: don't restore current->blocked on error If we fail to setup the signal stack frame then we don't need to restore current->blocked because it is not modified by setup_signal_stack_*. Acked-by: Oleg Nesterov Acked-by: Richard Weinberger Tested-by: Richard Weinberger Signed-off-by: Matt Fleming Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/signal.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c index e8b889d3bce7..8382e0b91e8b 100644 --- a/arch/um/kernel/signal.c +++ b/arch/um/kernel/signal.c @@ -65,13 +65,9 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr, #endif err = setup_signal_stack_si(sp, signr, ka, regs, info, oldset); - if (err) { - spin_lock_irq(¤t->sighand->siglock); - current->blocked = *oldset; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + if (err) force_sigsegv(signr, current); - } else { + else { spin_lock_irq(¤t->sighand->siglock); sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask);