From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-cys01nam02on0123.outbound.protection.outlook.com ([104.47.37.123]:10471 "EHLO NAM02-CY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754237AbeDIAUc (ORCPT ); Sun, 8 Apr 2018 20:20:32 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Arnd Bergmann , Thomas Gleixner , Andi Kleen , Nicolas Pitre , Peter Zijlstra , Dave Hansen , Andy Lutomirski , Josh Poimboeuf , Borislav Petkov , Vlastimil Babka , Sasha Levin Subject: [PATCH AUTOSEL for 4.15 141/189] x86/dumpstack: Avoid uninitlized variable Date: Mon, 9 Apr 2018 00:18:41 +0000 Message-ID: <20180409001637.162453-141-alexander.levin@microsoft.com> References: <20180409001637.162453-1-alexander.levin@microsoft.com> In-Reply-To: <20180409001637.162453-1-alexander.levin@microsoft.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org List-ID: From: Arnd Bergmann [ Upstream commit ebfc15019cfa72496c674ffcb0b8ef10790dcddc ] In some configurations, 'partial' does not get initialized, as shown by this gcc-8 warning: arch/x86/kernel/dumpstack.c: In function 'show_trace_log_lvl': arch/x86/kernel/dumpstack.c:156:4: error: 'partial' may be used uninitializ= ed in this function [-Werror=3Dmaybe-uninitialized] show_regs_if_on_stack(&stack_info, regs, partial); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This initializes it to false, to get the previous behavior in this case. Fixes: a9cdbe72c4e8 ("x86/dumpstack: Fix partial register dumps") Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Gleixner Cc: Andi Kleen Cc: Nicolas Pitre Cc: Peter Zijlstra Cc: Dave Hansen Cc: Andy Lutomirski Cc: Josh Poimboeuf Cc: Borislav Petkov Cc: Vlastimil Babka Link: https://lkml.kernel.org/r/20180202145634.200291-1-arnd@arndb.de Signed-off-by: Sasha Levin --- arch/x86/kernel/dumpstack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index afbecff161d1..a2d8a3908670 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -109,7 +109,7 @@ void show_trace_log_lvl(struct task_struct *task, struc= t pt_regs *regs, struct stack_info stack_info =3D {0}; unsigned long visit_mask =3D 0; int graph_idx =3D 0; - bool partial; + bool partial =3D false; =20 printk("%sCall Trace:\n", log_lvl); =20 --=20 2.15.1