From 696913609b0e1285bd37964047303dd8d6579cb6 Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Fri, 11 May 2012 10:57:59 +1000 Subject: [PATCH] mn10300: use set_current_blocked() and block_sigmask() As described in 3f85a0fa ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit ccf3ec479ae8 ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Acked-by: Oleg Nesterov Acked-by: David Howells Cc: Koichi Yasutake Cc: Al Viro Signed-off-by: Matt Fleming Signed-off-by: Andrew Morton Signed-off-by: Al Viro --- arch/mn10300/kernel/signal.c | 21 ++++----------------- 1 file changed, 4 insertions(+), 17 deletions(-) diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c index 50eb94a05826b..890cf91767cc8 100644 --- a/arch/mn10300/kernel/signal.c +++ b/arch/mn10300/kernel/signal.c @@ -164,10 +164,7 @@ asmlinkage long sys_sigreturn(void) goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(current_frame(), &frame->sc, &d0)) goto badframe; @@ -195,10 +192,7 @@ asmlinkage long sys_rt_sigreturn(void) goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); if (restore_sigcontext(current_frame(), &frame->uc.uc_mcontext, &d0)) goto badframe; @@ -468,15 +462,8 @@ static int handle_signal(int sig, else ret = setup_frame(sig, ka, oldset, regs); - if (ret == 0) { - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, - &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - } + if (ret == 0) + block_sigmask(ka, sig); return ret; } -- 2.39.5