From patchwork Fri Jun 9 15:35:54 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kristina Martsenko X-Patchwork-Id: 9778843 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E612960350 for ; Fri, 9 Jun 2017 15:38:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BDC2B2864D for ; Fri, 9 Jun 2017 15:38:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AFEE82864C; Fri, 9 Jun 2017 15:38:15 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 5F9A92864C for ; Fri, 9 Jun 2017 15:38:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=bIvTst7CsiI2K70f470nABfBVjHFxDz0sIcAmBMCqp8=; b=VwRT5r9IGhkQLPbEy+ixzIWm9W rESHPJmikO3R8k1sbvmD+S2x+t1tSr200vXcgvQM6vCKTHkI/by6Bi0OphaK3jDlgLSKwXRso/ctD Bc6vsbK7TZWVhapLulK0qQ1UXgAudU94cxNVpu23QXkBmynC4s3x5Y09PGDisf2G3HIRMIhCZqo4m +SezwCXbjt1V0BskL/GxoYmifD1L6CRHEYhYf45eQkZsQswq4KRMLrj4soENawBTZkgk5ELPxSwFW vVb2qKh/pO+U0vakaEH3r3d3lYgSO4EtZ2H/ufygwC0OEZnGW2Pm6G4I1HsggWkMFXyB3k3q8su+R ZFwp/ZvQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dJLzG-0005sN-QP; Fri, 09 Jun 2017 15:38:10 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dJLy1-0004Lz-8W for linux-arm-kernel@lists.infradead.org; Fri, 09 Jun 2017 15:36:55 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 05E6315BF; Fri, 9 Jun 2017 08:36:35 -0700 (PDT) Received: from moonbear.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 46B753F557; Fri, 9 Jun 2017 08:36:34 -0700 (PDT) From: Kristina Martsenko To: Will Deacon , Catalin Marinas Subject: [PATCH v2 3/3] arm64: mm: print file name of faulting vma Date: Fri, 9 Jun 2017 16:35:54 +0100 Message-Id: <1497022554-1451-3-git-send-email-kristina.martsenko@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1497022554-1451-1-git-send-email-kristina.martsenko@arm.com> References: <1497022554-1451-1-git-send-email-kristina.martsenko@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170609_083653_338918_DDC61358 X-CRM114-Status: UNSURE ( 8.74 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Print out the name of the file associated with the vma that faulted. This is usually the executable or shared library name. We already print out the task name, but also printing the library name is useful for pinpointing bugs to libraries. Also print the base address and size of the vma, which together with the PC (printed by __show_regs) gives the offset into the library. Fault prints now look like: test[2361]: unhandled level 2 translation fault (11) at 0x00000012, esr 0x92000006, in libfoo.so[ffffa0145000+1000] This is already done on x86, for more details see commit 03252919b798 ("x86: print which shared library/executable faulted in segfault etc. messages v3"). Signed-off-by: Kristina Martsenko Acked-by: Mark Rutland --- v2: - add this patch arch/arm64/mm/fault.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index b070dcd50ed0..6a2a5dd7cf36 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -256,9 +256,11 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr, if (unhandled_signal(tsk, sig) && show_unhandled_signals_ratelimited()) { inf = esr_to_fault_info(esr); - pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n", + pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x", tsk->comm, task_pid_nr(tsk), inf->name, sig, addr, esr); + print_vma_addr(KERN_CONT ", in ", regs->pc); + pr_cont("\n"); __show_regs(regs); }