Received: by 2002:ac0:a5a7:0:0:0:0:0 with SMTP id m36-v6csp5246673imm; Tue, 31 Jul 2018 07:51:52 -0700 (PDT) X-Google-Smtp-Source: AAOMgpddRKt42SJBk98aJEGlalv3qAeVwmS2fEAcm3Kpq9PrI/txE8Qj7LQAdUV4urXkyMb1vvYS X-Received: by 2002:a17:902:694a:: with SMTP id k10-v6mr20979771plt.166.1533048712802; Tue, 31 Jul 2018 07:51:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1533048712; cv=none; d=google.com; s=arc-20160816; b=ciPgcwQV1nGiZYeMuPO++gOdeGmwzQDEDF4QNOiHD8dRpIa2hHcNf+TFzI5cqKuCoG x2bnsCl9X0Jz6u0Ny4C1Es/wvivSz65/JfH7rDx5LhkolT2nZQqa+3EJpGQCo4pzqCYr BVnIZF0+x/HniV6w6sLKIUJ/Z5CDo2gzfONjQZAQOPW6bM5IW4ihzGdqXiJ/A4JZ+CL3 6KmdvkjuvqlFgxBam0EX/UOO9gZhqu+QaQTlgFLdXeaTtFQDx+lJzxrfP6aAnWqT4COQ Eo5Sj06o4fP7uRPnRUremlnUr3bw/jVgpuIwkCn+jS85ok3ceWLz+ezHjcGLLADRb8m8 vyeQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:content-transfer-encoding :mime-version:date:subject:cc:to:from:arc-authentication-results; bh=vRn0QVk0YQARGaBZeCPOdRNNz4BiD7+neL9ZKZHucms=; b=DosdwgwBsRQQ6EyXsXeMYlfSMVQd2Pi1+mbyKC62eTU1dh/kzgiYg3FMAJnPOS7384 S2CeEkAvEVmMojqs7uDLS3qsJg3rgQdFLwluwnz+daC38ceKZiZnUg+YuRsD5EL6ho7l aUC/z42oioXBtzLiF9czpzy9Nmm2lhmcshk5nfld3rBDxQi64adpAcYhzcU6NaQnMIc1 abtaMoW/ouemjuicP9JIKN1l869nBTxsMY9OKgmCtRuksE9aTv3vZ9ME/Er90r8Ngmn8 zO5Tk4mTvN3WTCWfN9E9jD3wX3jrdniNVESVyEGFDSaKzhDBjK7D2DuuonM+IehDTNoB Cklw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ibm.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id x11-v6si11887985plv.360.2018.07.31.07.51.38; Tue, 31 Jul 2018 07:51:52 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ibm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732513AbeGaQbT (ORCPT + 99 others); Tue, 31 Jul 2018 12:31:19 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:55566 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732231AbeGaQbT (ORCPT ); Tue, 31 Jul 2018 12:31:19 -0400 Received: from pps.filterd (m0098404.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w6VE8uJa120635 for ; Tue, 31 Jul 2018 10:50:38 -0400 Received: from e36.co.us.ibm.com (e36.co.us.ibm.com [32.97.110.154]) by mx0a-001b2d01.pphosted.com with ESMTP id 2kjr56n11k-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 31 Jul 2018 10:50:37 -0400 Received: from localhost by e36.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 31 Jul 2018 08:50:36 -0600 Received: from b03cxnp08025.gho.boulder.ibm.com (9.17.130.17) by e36.co.us.ibm.com (192.168.1.136) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 31 Jul 2018 08:50:32 -0600 Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp08025.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w6VEoUjg22479128 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 31 Jul 2018 07:50:30 -0700 Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 79C27BE058; Tue, 31 Jul 2018 08:50:30 -0600 (MDT) Received: from b03ledav005.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 44892BE06F; Tue, 31 Jul 2018 08:50:27 -0600 (MDT) Received: from kermit-br-ibm-com.br.ibm.com (unknown [9.18.235.193]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP; Tue, 31 Jul 2018 08:50:27 -0600 (MDT) From: Murilo Opsfelder Araujo To: linux-kernel@vger.kernel.org Cc: "Alastair D'Silva" , Andrew Donnellan , Balbir Singh , Benjamin Herrenschmidt , Christophe Leroy , Cyril Bur , "Eric W . Biederman" , Joe Perches , Michael Ellerman , Michael Neuling , Murilo Opsfelder Araujo , Nicholas Piggin , Paul Mackerras , Simon Guo , Sukadev Bhattiprolu , "Tobin C . Harding" , linuxppc-dev@lists.ozlabs.org Subject: [PATCH v3 0/9] powerpc: Modernize unhandled signals message Date: Tue, 31 Jul 2018 11:50:11 -0300 X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 18073114-0020-0000-0000-00000E461DFB X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009463; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01068483; UDB=6.00549299; IPR=6.00846683; MB=3.00022427; MTD=3.00000008; XFM=3.00000015; UTC=2018-07-31 14:50:36 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18073114-0021-0000-0000-000062792EA8 Message-Id: <20180731145020.14009-1-muriloo@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-07-31_06:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=657 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807310137 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, everyone. This series was inspired by the need to modernize and display more informative messages about unhandled signals. The "unhandled signal NN" is not very informative. We thought it would be helpful adding a human-readable message describing what the signal number means, printing the VMA address, and dumping the instructions. Before this series: pandafault32[4724]: unhandled signal 11 at 100005e4 nip 10000444 lr 0fe31ef4 code 2 pandafault64[4725]: unhandled signal 11 at 0000000010000718 nip 0000000010000574 lr 00007fff7faa7a6c code 2 After this series: pandafault32[4753]: segfault (11) at 100005e4 nip 10000444 lr fe31ef4 code 2 in pandafault32[10000000+10000] pandafault32[4753]: code: 4bffff3c 60000000 60420000 4bffff30 9421ffd0 93e1002c 7c3f0b78 3d201000 pandafault32[4753]: code: 392905e4 913f0008 813f0008 39400048 <99490000> 39200000 7d234b78 397f0030 pandafault64[4754]: segfault (11) at 10000718 nip 10000574 lr 7fffb0007a6c code 2 in pandafault64[10000000+10000] pandafault64[4754]: code: e8010010 7c0803a6 4bfffef4 4bfffef0 fbe1fff8 f821ffb1 7c3f0b78 3d22fffe pandafault64[4754]: code: 39298818 f93f0030 e93f0030 39400048 <99490000> 39200000 7d234b78 383f0050 Link to v2: https://lore.kernel.org/lkml/20180727145811.12334-1-muriloo@linux.ibm.com/ v2..v3: - Dropped patch 3 - Updated patch 4 to use %lx Cheers! Murilo Opsfelder Araujo (9): powerpc/traps: Print unhandled signals in a separate function powerpc/traps: Return early in show_signal_msg() powerpc/traps: Use %lx format in show_signal_msg() powerpc/traps: Print VMA for unhandled signals powerpc/traps: Print signal name for unhandled signals powerpc: Do not call __kernel_text_address() in show_instructions() powerpc: Add stacktrace.h header powerpc/traps: Show instructions on exceptions powerpc/traps: Add line prefix in show_instructions() arch/powerpc/include/asm/stacktrace.h | 13 +++++ arch/powerpc/kernel/process.c | 13 +++-- arch/powerpc/kernel/traps.c | 72 +++++++++++++++++++++++---- 3 files changed, 83 insertions(+), 15 deletions(-) create mode 100644 arch/powerpc/include/asm/stacktrace.h -- 2.17.1