From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx493RMmRHI7AdUYEtWiC/5Jw6p3GNZIUwtlunc4oO4bfuF7/qJNFYIJFiP/ys++lVcWhLGeE ARC-Seal: i=1; a=rsa-sha256; t=1524652948; cv=none; d=google.com; s=arc-20160816; b=GDHavsQ0h7lOBIMul6cYzdcBRux+b7+pFMXU/vgSd2j1TwMLSV1DFFzHvRVyz5aPuq HKAeC+QfeZXqpZ0RXZPeJHJN5BTomNILWzJRLnm0E3VqKJt8nxfxVUMot6oMSU5/c6XS IvJh+dIsFnA+dJobuJb5lGomS4vebRbr3udTZtXKejeyNFx3s2hONTBemXtjqgmUSxgx huio7SdGzAcmFBS+aMAtWNF6ERtOLX7VJM/qchkFOMl9osGpHycH0iWm86pv2y3tKrzS plCScOMU67s6PE8SMw5AJz/BPZ0kxEBVk7jAq4PYgSLhwmIrCOXrqE76o20uyq9JfoCP yZBQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=H3Tjm+pldsUojv9NTuVO8PdhUoLdw7q3+cMg7OzTAB4=; b=Tyd3B7/qL9ZddR2+hPTHQhrotVKR01dK7GTzVSKzb5P9TxmsHexCotxFFHumCHjild PcqmPtNDo1D32HouJ9WfTbf7mTRlvL2gaB7Wzgh4SJ0HmD6V+7DOZ2GDpABwlInbgCw/ dQHWeKQHqawqhT+HebVpIudsOwt8oO0JQGjixS1SjdonTs06mcvyXG0rkp2yISINvAZN H+0q6HrOdYmvcJWKr2V/k2JyKBw8uH1ETSwk0DWa820hnFjf9p1Noz09XX5d+hSJVkyu 0XTUdiErppQgT47s7ZEkz7X7a90dUciraItLaMlV1bNZOGRJhAHR0npw/+rrlRiJXA56 ijLA== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Arnd Bergmann , Thomas Gleixner , Andi Kleen , Nicolas Pitre , Peter Zijlstra , Dave Hansen , Andy Lutomirski , Josh Poimboeuf , Borislav Petkov , Vlastimil Babka , Sasha Levin Subject: [PATCH 4.14 128/183] x86/dumpstack: Avoid uninitlized variable Date: Wed, 25 Apr 2018 12:35:48 +0200 Message-Id: <20180425103247.573344833@linuxfoundation.org> X-Mailer: git-send-email 2.17.0 In-Reply-To: <20180425103242.532713678@linuxfoundation.org> References: <20180425103242.532713678@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1598714489958346277?= X-GMAIL-MSGID: =?utf-8?q?1598714489958346277?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ 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 uninitialized in this function [-Werror=maybe-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 Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/dumpstack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -109,7 +109,7 @@ void show_trace_log_lvl(struct task_stru struct stack_info stack_info = {0}; unsigned long visit_mask = 0; int graph_idx = 0; - bool partial; + bool partial = false; printk("%sCall Trace:\n", log_lvl);