From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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, "Helge Deller" , "Dmitry V. Levin" Date: Sun, 12 Jun 2016 22:34:42 +0100 Message-ID: Subject: [PATCH 3.2 41/46] parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.2.81-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: "Dmitry V. Levin" commit f0b22d1bb2a37a665a969e95785c75a4f49d1499 upstream. Do not load one entry beyond the end of the syscall table when the syscall number of a traced process equals to __NR_Linux_syscalls. Similar bug with regular processes was fixed by commit 3bb457af4fa8 ("[PARISC] Fix bug when syscall nr is __NR_Linux_syscalls"). This bug was found by strace test suite. Signed-off-by: Dmitry V. Levin Acked-by: Helge Deller Signed-off-by: Helge Deller [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- arch/parisc/kernel/syscall.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -314,7 +314,7 @@ tracesys_next: ldo -16(%r30),%r29 /* Reference param save area */ #endif - comiclr,>>= __NR_Linux_syscalls, %r20, %r0 + comiclr,>> __NR_Linux_syscalls, %r20, %r0 b,n .Lsyscall_nosys LDREGX %r20(%r19), %r19