From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752943AbeC1Mcx (ORCPT ); Wed, 28 Mar 2018 08:32:53 -0400 Received: from out30-131.freemail.mail.aliyun.com ([115.124.30.131]:38863 "EHLO out30-131.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752065AbeC1Mcw (ORCPT ); Wed, 28 Mar 2018 08:32:52 -0400 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R631e4;CH=green;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e07488;MF=yuwang@linux.alibaba.com;NM=1;PH=DS;RN=4;SR=0;TI=SMTPD_---0T-EMcPG_1522240349; From: Wang Yu To: Steven Rostedt , Ingo Molnar Cc: linux-kernel@vger.kernel.org, Wang Yu Subject: [PATCH] ftrace: fix task's invalid comm of <...> when big pid Date: Wed, 28 Mar 2018 20:32:27 +0800 Message-Id: <1522240347-24465-1-git-send-email-yuwang@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org when pid is bigger than PID_MAX_DEFAULT, the comm of task is <...>, it is better use pid_max to compare Signed-off-by: Wang Yu --- kernel/trace/trace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) mode change 100644 => 100755 kernel/trace/trace.c diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c old mode 100644 new mode 100755 index 20a2300..0d4bc7a --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1976,7 +1976,7 @@ static void __trace_find_cmdline(int pid, char comm[]) return; } - if (pid > PID_MAX_DEFAULT) { + if (pid > pid_max) { strcpy(comm, "<...>"); return; } -- 1.8.3.1