From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7C4CC43218 for ; Sat, 27 Apr 2019 15:22:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B1A2F206A3 for ; Sat, 27 Apr 2019 15:22:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728205AbfD0PVt (ORCPT ); Sat, 27 Apr 2019 11:21:49 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:33830 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727561AbfD0PPc (ORCPT ); Sat, 27 Apr 2019 11:15:32 -0400 Received: from [192.168.4.242] (helo=deadeye) by shadbolt.decadent.org.uk with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hKP32-0000zA-E2; Sat, 27 Apr 2019 16:15:28 +0100 Received: from ben by deadeye with local (Exim 4.92) (envelope-from ) id 1hKP2l-0004Xj-5G; Sat, 27 Apr 2019 16:15:11 +0100 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, Denis Kirjanov , "Richard Weinberger" Date: Sat, 27 Apr 2019 16:13:09 +0100 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) X-Patchwork-Hint: ignore Subject: [PATCH 3.16 116/202] m32r: Use get_signal() signal_setup_done() In-Reply-To: X-SA-Exim-Connect-IP: 192.168.4.242 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.66-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Richard Weinberger commit 0f5bef660a7c3b030eb60ceb29e3b2d89f894f56 upstream. Use the more generic functions get_signal() signal_setup_done() for signal delivery. Signed-off-by: Richard Weinberger [bwh: Backported to 3.16 as dependency of commit 35634ffa1751 "signal: Always notice exiting tasks"] Signed-off-by: Ben Hutchings --- arch/m32r/kernel/signal.c | 47 +++++++++++++++++---------------------- 1 file changed, 20 insertions(+), 27 deletions(-) --- a/arch/m32r/kernel/signal.c +++ b/arch/m32r/kernel/signal.c @@ -173,17 +173,17 @@ get_sigframe(struct k_sigaction *ka, uns return (void __user *)((sp - frame_size) & -8ul); } -static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) +static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, + struct pt_regs *regs) { struct rt_sigframe __user *frame; int err = 0; - int signal; + int signal, sig = ksig->sig; - frame = get_sigframe(ka, regs->spu, sizeof(*frame)); + frame = get_sigframe(&ksig->ka, regs->spu, sizeof(*frame)); if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) - goto give_sigsegv; + return -EFAULT; signal = current_thread_info()->exec_domain && current_thread_info()->exec_domain->signal_invmap @@ -193,13 +193,13 @@ static int setup_rt_frame(int sig, struc err |= __put_user(signal, &frame->sig); if (err) - goto give_sigsegv; + return -EFAULT; err |= __put_user(&frame->info, &frame->pinfo); err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); + err |= copy_siginfo_to_user(&frame->info, &ksig->info); if (err) - goto give_sigsegv; + return -EFAULT; /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); @@ -208,17 +208,17 @@ static int setup_rt_frame(int sig, struc err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); if (err) - goto give_sigsegv; + return -EFAULT; /* Set up to return from userspace. */ - regs->lr = (unsigned long)ka->sa.sa_restorer; + regs->lr = (unsigned long)ksig->ka.sa.sa_restorer; /* Set up registers for signal handler */ regs->spu = (unsigned long)frame; regs->r0 = signal; /* Arg for signal handler */ regs->r1 = (unsigned long)&frame->info; regs->r2 = (unsigned long)&frame->uc; - regs->bpc = (unsigned long)ka->sa.sa_handler; + regs->bpc = (unsigned long)ksig->ka.sa.sa_handler; set_fs(USER_DS); @@ -228,10 +228,6 @@ static int setup_rt_frame(int sig, struc #endif return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return -EFAULT; } static int prev_insn(struct pt_regs *regs) @@ -252,9 +248,10 @@ static int prev_insn(struct pt_regs *reg */ static void -handle_signal(unsigned long sig, struct k_sigaction *ka, siginfo_t *info, - struct pt_regs *regs) +handle_signal(struct ksignal *ksig, struct pt_regs *regs) { + int ret; + /* Are we from a system call? */ if (regs->syscall_nr >= 0) { /* If so, check system call restarting.. */ @@ -265,7 +262,7 @@ handle_signal(unsigned long sig, struct break; case -ERESTARTSYS: - if (!(ka->sa.sa_flags & SA_RESTART)) { + if (!(ksig->ka.sa.sa_flags & SA_RESTART)) { regs->r0 = -EINTR; break; } @@ -278,10 +275,9 @@ handle_signal(unsigned long sig, struct } /* Set up the stack frame */ - if (setup_rt_frame(sig, ka, info, sigmask_to_save(), regs)) - return; + ret = setup_rt_frame(ksig, sigmask_to_save(), regs); - signal_delivered(sig, info, ka, regs, 0); + signal_setup_done(ret, ksig, 0); } /* @@ -291,9 +287,7 @@ handle_signal(unsigned long sig, struct */ static void do_signal(struct pt_regs *regs) { - siginfo_t info; - int signr; - struct k_sigaction ka; + struct ksignal ksig; /* * We want the common case to go fast, which @@ -304,8 +298,7 @@ static void do_signal(struct pt_regs *re if (!user_mode(regs)) return; - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { + if (get_signal(&ksig)) { /* Re-enable any watchpoints before delivering the * signal to user space. The processor register will * have been cleared if the watchpoint triggered @@ -313,7 +306,7 @@ static void do_signal(struct pt_regs *re */ /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, regs); + handle_signal(&ksig, regs); return; }