From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: poffice@blade.nagaokaut.ac.jp Delivered-To: poffice@blade.nagaokaut.ac.jp Received: from kankan.nagaokaut.ac.jp (kankan.nagaokaut.ac.jp [133.44.2.24]) by blade.nagaokaut.ac.jp (Postfix) with ESMTP id B73B819C0161 for ; Mon, 16 Nov 2015 01:54:26 +0900 (JST) Received: from voscc.nagaokaut.ac.jp (voscc.nagaokaut.ac.jp [133.44.1.100]) by kankan.nagaokaut.ac.jp (Postfix) with ESMTP id 50157B5D86D for ; Mon, 16 Nov 2015 02:24:44 +0900 (JST) Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by voscc.nagaokaut.ac.jp (Postfix) with ESMTP id 2C56E18CC7AF for ; Mon, 16 Nov 2015 02:24:43 +0900 (JST) Received: from [221.186.184.76] (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id D2134120502; Mon, 16 Nov 2015 02:24:41 +0900 (JST) X-Original-To: ruby-core@ruby-lang.org Delivered-To: ruby-core@ruby-lang.org Received: from o10.shared.sendgrid.net (o10.shared.sendgrid.net [173.193.132.135]) by neon.ruby-lang.org (Postfix) with ESMTPS id F24CA1204C4 for ; Mon, 16 Nov 2015 02:24:37 +0900 (JST) DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sendgrid.me; h=from:to:references:subject:mime-version:content-type:content-transfer-encoding:list-id; s=smtpapi; bh=Y39iBaCLbB6MzAe1zd/ra/Slb4M=; b=JKvkPbQ/eeBMeateal haPTBiokxDhDpVe2nzWTS0UdqhfAxmhsTA0m+59e44/4PGawRKJRl7fIZk++eQTF vrsUIwihTvisiMkg1ErUOZMUlz1mQ3A0krAqIf4XOs/FormSIn1wX17ToKnnD0XJ 8tqdgxFGj8YmcZCGkvNdr3rg0= Received: by filter0644p1mdw1.sendgrid.net with SMTP id filter0644p1mdw1.12962.5648BFD0E 2015-11-15 17:24:32.098264117 +0000 UTC Received: from herokuapp.com (ec2-54-161-116-85.compute-1.amazonaws.com [54.161.116.85]) by ismtpd0003p1iad1.sendgrid.net (SG) with ESMTP id xyAwAf4BSlOmvHDlgh2TbQ for ; Sun, 15 Nov 2015 17:24:32.219 +0000 (UTC) Date: Sun, 15 Nov 2015 17:24:32 +0000 From: alex.gaziev@gmail.com To: ruby-core@ruby-lang.org Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Redmine-MailingListIntegration-Message-Ids: 46137 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 11692 X-Redmine-Issue-Author: gazay X-Redmine-Sender: gazay X-Mailer: Redmine X-Redmine-Host: bugs.ruby-lang.org X-Redmine-Site: Ruby Issue Tracking System X-Auto-Response-Suppress: All Auto-Submitted: auto-generated X-SG-EID: ync6xU2WACa70kv/Ymy4QrNMhiuLXJG8OTL2vJD1yS7dOQo+L5UMichE2SxDS/E7lEXqZOvaNKlJ2M VoxloiXDfYiP8XsTvg/5QdcB14AD0hhtRclKI1i7f+5WJlPRmvK82MXtCL5EoLULAH5zys9IOosPkh KZrXXFLxYsTvrY+t2aZ6Guvdq+ZPP5A0KACw X-ML-Name: ruby-core X-Mail-Count: 71497 Subject: [ruby-core:71497] [Ruby trunk - Bug #11692] [Open] [PATCH] Re-enable GC if stack overflow was caught from signal handler X-BeenThere: ruby-core@ruby-lang.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: Ruby developers List-Id: Ruby developers List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #11692 has been reported by Alex Gaziev. ---------------------------------------- Bug #11692: [PATCH] Re-enable GC if stack overflow was caught from signal handler https://bugs.ruby-lang.org/issues/11692 * Author: Alex Gaziev * Status: Open * Priority: Normal * Assignee: * ruby -v: * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN ---------------------------------------- We got ruby application running on our production server and noticed that it regularly crashes with out of memory errors. After months of investigation, I narrowed the case to the examples (1/2). After digging ruby sources and running test code, I found out that GC stopped working after recovering from native stack overflow error. Probably the relevant code appeared in 2.2 https://github.com/ruby/ruby/commit/0c391a55d3ed4637e17462d9b9b8aa21e64e2340 where ruby_disable_gc_stress became ruby_disable_gc. Patches for trunk and 2.2 branches below. ---Files-------------------------------- example1.rb (311 Bytes) example2.rb (333 Bytes) re-enable-gc-after-stackoverflow-trunk.patch (985 Bytes) re-enable-gc-after-stackoverflow-ruby-2-2.patch (985 Bytes) -- https://bugs.ruby-lang.org/