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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 D5A86C433DF for ; Sat, 30 May 2020 10:40:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7730820842 for ; Sat, 30 May 2020 10:40:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=jguk.org header.i=@jguk.org header.b="FWhPXwhx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727947AbgE3KkD (ORCPT ); Sat, 30 May 2020 06:40:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59552 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725813AbgE3KkC (ORCPT ); Sat, 30 May 2020 06:40:02 -0400 Received: from mail-wr1-x42c.google.com (mail-wr1-x42c.google.com [IPv6:2a00:1450:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1950FC03E969 for ; Sat, 30 May 2020 03:40:02 -0700 (PDT) Received: by mail-wr1-x42c.google.com with SMTP id x14so6701000wrp.2 for ; Sat, 30 May 2020 03:40:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jguk.org; s=google; h=from:subject:to:message-id:date:user-agent:mime-version :content-language:content-transfer-encoding; bh=c9jek56u3Je/Pi7hOshBLp5DuO3IFZTJ/zOXPc57l0o=; b=FWhPXwhxgZkB7jGumFJRkHKwIVVJFky7ZiMkkKAVOCapuYkPWJjIPmMjjrZ/Gl8HiX KZZdNFP/rs1tUzh03kZOM2z6eivl7cqAAko/fqhx0mcX/lbw4YldOhj7/vw1hyZESauO gUE8UxagnyCQY7A6D5FJmUaauyKmXomgz8mqWNENMiiY7YvUh2vEQugLObPKRZddTitM yIAsy/70nEAyOeU021gJsqRamtrCLtirIfUSX2BNZksErjUr9LoW2htzEs8Q3xVfQHMI gyU0NMS0FqeYk6y+8yMj0gqAg5wbSi7FFdawEsnRqn4S9pWevC1nN3peHiE5FMZkGpld /+Ug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:subject:to:message-id:date:user-agent :mime-version:content-language:content-transfer-encoding; bh=c9jek56u3Je/Pi7hOshBLp5DuO3IFZTJ/zOXPc57l0o=; b=YK8l1SDWzBUiTqYPq+bSTUkQKy/ejBKVTgNGwePljsnnPsd5ZsNQmGdP7raVMRTjLX WoWQHW5jQzSOKMA/0eIqwIMknug7UlYOTMip5RS1JwKuaGAKs6voCJVjXuITImvG8hyg Hcy14kJGTEa/S1uCx81r8wdJwxIjzwgN+bhnGJ6ukw1YAKToSaS0Zy7AHk6pkjbm/AmG Fz5Q5MADpHl9aHMabPIKMOv6WS5ekGGA14yJs0WbEZOGJ6kc4Ng3J0OatUAaj6gfq7f8 b6NgatCpZFByYiYTWqMBJU3oDGIftKVMUUKcR75NhuuJot9yKZ08jt8kj8LYQCv3Q2dq 7qPA== X-Gm-Message-State: AOAM533yg410bAkjwJHv1CzkV4j31Ru09ns4h566tMMoaiB1ezbejwwq 7iupe4LFPZg8Xw3oq155Z7lZdRx0wkk= X-Google-Smtp-Source: ABdhPJyaPxf9bbOLvZRPlo7F+fSi87yAu2YldoGHNL3dGMQfnpKN47ZI6s+PencthnRxj4+XimtCQQ== X-Received: by 2002:a5d:5112:: with SMTP id s18mr12588337wrt.160.1590835199067; Sat, 30 May 2020 03:39:59 -0700 (PDT) Received: from [192.168.0.12] (cpc87281-slou4-2-0-cust47.17-4.cable.virginm.net. [92.236.12.48]) by smtp.gmail.com with ESMTPSA id o10sm13241923wrq.40.2020.05.30.03.39.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 30 May 2020 03:39:57 -0700 (PDT) From: Jonny Grant Subject: core man page %e To: Michael Kerrisk , linux-man Message-ID: Date: Sat, 30 May 2020 11:39:57 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-man-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Hello mtk I've noticed "%e-%s.core" often gives something other than the filename and the name is truncated to 16 bytes:- ThreadPoolServi-5.core Chrome_InProcUt-5.core This was set: sysctl -w kernel.core_pattern="%e-%s.core" In multithreaded applications it looks like %e is giving something other than the filename, perhaps a thread entry-point symbol name. https://www.man7.org/linux/man-pages/man5/core.5.html %e executable filename (without path prefix) Could this be updated to: %e executable filename or thread name truncated to 16 bytes Cheers, Jonny