From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754387AbcEJAG3 (ORCPT ); Mon, 9 May 2016 20:06:29 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:57698 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754359AbcEJAG0 (ORCPT ); Mon, 9 May 2016 20:06:26 -0400 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: "Dmitry V . Levin" , Helge Deller , Kamal Mostafa Subject: [PATCH 3.19.y-ckt 47/54] parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls Date: Mon, 9 May 2016 17:05:06 -0700 Message-Id: <1462838713-31343-48-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1462838713-31343-1-git-send-email-kamal@canonical.com> References: <1462838713-31343-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.19 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.19.8-ckt21 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ 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 Signed-off-by: Kamal Mostafa --- arch/parisc/kernel/syscall.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index 0b8d26d..7105610 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S @@ -342,7 +342,7 @@ tracesys_next: stw %r21, -56(%r30) /* 6th argument */ #endif - comiclr,>>= __NR_Linux_syscalls, %r20, %r0 + comiclr,>> __NR_Linux_syscalls, %r20, %r0 b,n .Lsyscall_nosys LDREGX %r20(%r19), %r19 -- 2.7.4