From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AD765C43381 for ; Tue, 12 Mar 2019 17:57:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7FFDC214AF for ; Tue, 12 Mar 2019 17:57:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552413455; bh=XKj66m+DyBjCG7lfEMwPn0WIxoJIiBrLCxnJZ4p5gp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=1CR6oT6GT00fTww1b6GMiFFKbsnfGYBkMBrF4ROI7vLslWHkMdgbiO2Sx6gtflrpf eLKfWd+uky/dOzjajWPmsvHCQNSwyNZ3FhFGKoBp7ZJbgLCJNZglEOHPJg7QPGDW92 A8EPSdZlOhq1doVCGRqROrD4OaR7AWrcg9Bjddlw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727427AbfCLR5e (ORCPT ); Tue, 12 Mar 2019 13:57:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:51214 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728073AbfCLRNr (ORCPT ); Tue, 12 Mar 2019 13:13:47 -0400 Received: from localhost (unknown [104.133.8.98]) (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 91D3B2171F; Tue, 12 Mar 2019 17:13:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552410826; bh=XKj66m+DyBjCG7lfEMwPn0WIxoJIiBrLCxnJZ4p5gp8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MiQKmgABS9/sJOKwSxxteb98fgYBibN+1JRKYl4dw6lDPwy7Vkqr0O+0qFJeh2xDx Z587nv+PWYWYTloXpA+doz1/yd6PCXqc97iwpG3fOLiXkpjeJCklDbFvLHIRhrt1ST 37t5/OHt5OsJ3tDSkzAcUKWDXjr/WSkGP+G5vhXs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andi Kleen , Arnaldo Carvalho de Melo , Jiri Olsa , Sasha Levin Subject: [PATCH 4.19 003/149] perf script: Fix crash with printing mixed trace point and other events Date: Tue, 12 Mar 2019 10:07:01 -0700 Message-Id: <20190312170349.735068011@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190312170349.421581206@linuxfoundation.org> References: <20190312170349.421581206@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 96167167b6e17b25c0e05ecc31119b73baeab094 ] 'perf script' crashes currently when printing mixed trace points and other events because the trace format does not handle events without trace meta data. Add a simple check to avoid that. % cat > test.c main() { printf("Hello world\n"); } ^D % gcc -g -o test test.c % sudo perf probe -x test 'test.c:3' % perf record -e '{cpu/cpu-cycles,period=10000/,probe_test:main}:S' ./test % perf script Committer testing: Before: # perf probe -x /lib64/libc-2.28.so malloc Added new event: probe_libc:malloc (on malloc in /usr/lib64/libc-2.28.so) You can now use it in all perf tools, such as: perf record -e probe_libc:malloc -aR sleep 1 # perf probe -l probe_libc:malloc (on __libc_malloc@malloc/malloc.c in /usr/lib64/libc-2.28.so) # perf record -e '{cpu/cpu-cycles,period=10000/,probe_libc:*}:S' sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.023 MB perf.data (40 samples) ] # perf script Segmentation fault (core dumped) ^C # After: # perf script | head -6 sleep 2888 94796.944981: 16198 cpu/cpu-cycles,period=10000/: ffffffff925dc04f get_random_u32+0x1f (/lib/modules/5.0.0-rc2+/build/vmlinux) sleep 2888 [-01] 94796.944981: probe_libc:malloc: sleep 2888 94796.944983: 4713 cpu/cpu-cycles,period=10000/: ffffffff922763af change_protection+0xcf (/lib/modules/5.0.0-rc2+/build/vmlinux) sleep 2888 [-01] 94796.944983: probe_libc:malloc: sleep 2888 94796.944986: 9934 cpu/cpu-cycles,period=10000/: ffffffff922777e0 move_page_tables+0x0 (/lib/modules/5.0.0-rc2+/build/vmlinux) sleep 2888 [-01] 94796.944986: probe_libc:malloc: # Signed-off-by: Andi Kleen Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Link: http://lkml.kernel.org/r/20190117194834.21940-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/builtin-script.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 6c1e7ceedcf3..ce2aee11e360 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -1658,7 +1658,7 @@ static void process_event(struct perf_script *script, return; } - if (PRINT_FIELD(TRACE)) { + if (PRINT_FIELD(TRACE) && sample->raw_data) { event_format__fprintf(evsel->tp_format, sample->cpu, sample->raw_data, sample->raw_size, fp); } -- 2.19.1