From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751983Ab1HKN5j (ORCPT ); Thu, 11 Aug 2011 09:57:39 -0400 Received: from arkanian.console-pimps.org ([212.110.184.194]:60048 "EHLO arkanian.console-pimps.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751629Ab1HKN51 (ORCPT ); Thu, 11 Aug 2011 09:57:27 -0400 From: Matt Fleming To: Oleg Nesterov Cc: linux-kernel@vger.kernel.org, David Howells , Al Viro Subject: [PATCH 07/41] frv: Use set_current_blocked() Date: Thu, 11 Aug 2011 14:56:41 +0100 Message-Id: <1313071035-12047-8-git-send-email-matt@console-pimps.org> X-Mailer: git-send-email 1.7.4.4 In-Reply-To: <1313071035-12047-1-git-send-email-matt@console-pimps.org> References: <1313071035-12047-1-git-send-email-matt@console-pimps.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Matt Fleming As described in e6fa16ab ("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. Cc: Oleg Nesterov Cc: David Howells Cc: Al Viro Signed-off-by: Matt Fleming --- arch/frv/kernel/signal.c | 32 +++++++++++++------------------- 1 files changed, 13 insertions(+), 19 deletions(-) diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c index bab0129..7f624e4 100644 --- a/arch/frv/kernel/signal.c +++ b/arch/frv/kernel/signal.c @@ -40,12 +40,13 @@ struct fdpic_func_descriptor { */ asmlinkage int sys_sigsuspend(int history0, int history1, old_sigset_t mask) { - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); + sigset_t blocked; + current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + + mask &= _BLOCKABLE; + siginitset(&blocked, mask); + set_current_blocked(&blocked); current->state = TASK_INTERRUPTIBLE; schedule(); @@ -158,10 +159,7 @@ asmlinkage int 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(&frame->sc, &gr8)) goto badframe; @@ -184,10 +182,7 @@ asmlinkage int 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(&frame->uc.uc_mcontext, &gr8)) goto badframe; @@ -475,13 +470,12 @@ static int handle_signal(unsigned long sig, siginfo_t *info, ret = setup_frame(sig, ka, oldset); if (ret == 0) { - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, - &ka->sa.sa_mask); + sigset_t blocked; + + sigorsets(&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); + sigaddset(&blocked, sig); + set_current_blocked(&blocked); } return ret; -- 1.7.4.4