From patchwork Fri Aug 7 06:17:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11704697 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3DAEB13B6 for ; Fri, 7 Aug 2020 06:17:39 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 124B2221E5 for ; Fri, 7 Aug 2020 06:17:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="PKsFyyON" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 124B2221E5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8B6B88D000B; Fri, 7 Aug 2020 02:17:37 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 8661A8D0002; Fri, 7 Aug 2020 02:17:37 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 755B98D000B; Fri, 7 Aug 2020 02:17:37 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0167.hostedemail.com [216.40.44.167]) by kanga.kvack.org (Postfix) with ESMTP id 6008F8D0002 for ; Fri, 7 Aug 2020 02:17:37 -0400 (EDT) Received: from smtpin06.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 22A4F82499B9 for ; Fri, 7 Aug 2020 06:17:37 +0000 (UTC) X-FDA: 77122766154.06.dust41_5b0938f26fbe Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin06.hostedemail.com (Postfix) with ESMTP id E7907100513F1 for ; Fri, 7 Aug 2020 06:17:36 +0000 (UTC) X-Spam-Summary: 1,0,0,03c91764c2462318,d41d8cd98f00b204,akpm@linux-foundation.org,,RULES_HIT:41:355:379:800:960:967:973:982:988:989:1260:1263:1345:1359:1381:1431:1437:1534:1541:1711:1730:1747:1777:1792:2197:2199:2393:2525:2559:2563:2682:2685:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3308:3352:3653:3865:3866:3867:3868:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:5007:6119:6261:6653:7576:7904:8599:9025:9207:9545:10004:10913:11473:11658:11914:12043:12048:12114:12297:12517:12519:12555:12679:12783:12986:13069:13161:13229:13311:13357:14181:14384:14721:14849:14915:21080:21221:21451:21627:21939:21990:30003:30029:30054,0,RBL:198.145.29.99:@linux-foundation.org:.lbl8.mailshell.net-62.2.0.100 64.100.201.201;04y8mxoocdzm96aszhqr6fr89afk5yptnmy4az8zzqezmf77r6931gcxbruyjk9.ngfctse7jtbykmh7ycogiyzjrwue9eujocfkzekmr6a59swtfpesnike98m1e1e.k-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not b ulk,SPF: X-HE-Tag: dust41_5b0938f26fbe X-Filterd-Recvd-Size: 2861 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Fri, 7 Aug 2020 06:17:36 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8CAF822C9F; Fri, 7 Aug 2020 06:17:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596781055; bh=D0gGW7zN6emYU3ITObP13wLCAJvpfiCO+L9kgcJ1wCg=; h=Date:From:To:Subject:In-Reply-To:From; b=PKsFyyONcslj0FyYxSkmE+8iGdg1BuDwH7mqGX8SpL44WatKNLzCazBBy3miGxwPW LmBeAufIk5Xp7hr0PrYoc5SlPyFkvvqJVPnu1DXP/Q2jThsXIGujfK0J7pMyR9WKLj MX4aiJqrSjcdUdqsUwh5M/coLMGhZAT9xe5RwpqM= Date: Thu, 06 Aug 2020 23:17:35 -0700 From: Andrew Morton To: akpm@linux-foundation.org, khlebnikov@yandex-team.ru, linux-mm@kvack.org, mm-commits@vger.kernel.org, sashal@kernel.org, torvalds@linux-foundation.org Subject: [patch 010/163] scripts/decode_stacktrace.sh: skip missing symbols Message-ID: <20200807061735.tb6sJM1z7%akpm@linux-foundation.org> In-Reply-To: <20200806231643.a2711a608dd0f18bff2caf2b@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Queue-Id: E7907100513F1 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Konstantin Khlebnikov Subject: scripts/decode_stacktrace.sh: skip missing symbols For now script turns missing symbols into '0' and make bogus decode. Skip them instead. Also simplify parsing output of 'nm'. Before: $ echo 'xxx+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux "" xxx (home/khlebnikov/src/linux/./arch/x86/include/asm/processor.h:398) After: $ echo 'xxx+0x0/0x0' | ./scripts/decode_stacktrace.sh vmlinux "" xxx+0x0/0x0 Link: http://lkml.kernel.org/r/159282922499.248444.4883465570858385250.stgit@buzz Signed-off-by: Konstantin Khlebnikov Cc: Sasha Levin Signed-off-by: Andrew Morton --- scripts/decode_stacktrace.sh | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/scripts/decode_stacktrace.sh~scripts-decode_stacktrace-skip-missing-symbols +++ a/scripts/decode_stacktrace.sh @@ -56,7 +56,11 @@ parse_symbol() { if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then local base_addr=${cache[$module,$name]} else - local base_addr=$(nm "$objfile" | grep -i ' t ' | awk "/ $name\$/ {print \$1}" | head -n1) + local base_addr=$(nm "$objfile" | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}') + if [[ $base_addr == "" ]] ; then + # address not found + return + fi cache[$module,$name]="$base_addr" fi # Let's start doing the math to get the exact address into the