From patchwork Tue Mar 8 13:51:02 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nix X-Patchwork-Id: 11260 Received: (qmail 31567 invoked by alias); 8 Mar 2016 13:54:12 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 31511 invoked by uid 89); 8 Mar 2016 13:54:11 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=1.4 required=5.0 tests=AWL, BAYES_50, KAM_LAZY_DOMAIN_SECURITY, RP_MATCHES_RCVD autolearn=no version=3.3.2 spammy=669, 66, 7, Hx-spam-relays-external:sk:mail.es, H*r:sk:mail.es X-HELO: mail.esperi.org.uk From: Nix To: libc-alpha@sourceware.org Subject: [PATCH 16/18] sparc: do not stack-protect the sigreturn handler. Date: Tue, 8 Mar 2016 13:51:02 +0000 Message-Id: <1457445064-7107-17-git-send-email-nix@esperi.org.uk> In-Reply-To: <1457445064-7107-1-git-send-email-nix@esperi.org.uk> References: <1457445064-7107-1-git-send-email-nix@esperi.org.uk> X-DCC--Metrics: spindle 1282; Body=2 Fuz1=2 From: Nick Alcock This is called from the kernel and must not have a canary. v2: New. v3: Use $(no-stack-protector). v4: Use inhibit_stack_protector. * sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c: (__rt_sigreturn_stub): Use inhibit_stack_protector. * sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c (__rt_sigreturn_stub): Likewise. (__sigreturn_stub): Likewise. --- sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c | 8 ++++++-- sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c | 4 +++- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c b/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c index 5aa3c35..b75142f 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c +++ b/sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c @@ -65,7 +65,9 @@ libc_hidden_def (__libc_sigaction) #include -static void +static +inhibit_stack_protector +void __rt_sigreturn_stub (void) { __asm__ ("mov %0, %%g1\n\t" @@ -74,7 +76,9 @@ __rt_sigreturn_stub (void) : "i" (__NR_rt_sigreturn)); } -static void +static +inhibit_stack_protector +void __sigreturn_stub (void) { __asm__ ("mov %0, %%g1\n\t" diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c b/sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c index 50c444c..058c011 100644 --- a/sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c +++ b/sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c @@ -66,7 +66,9 @@ libc_hidden_def (__libc_sigaction) #include -static void +static +inhibit_stack_protector +void __rt_sigreturn_stub (void) { __asm__ ("mov %0, %%g1\n\t"