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 CAA6819E005C for ; Fri, 18 Dec 2015 18:44:43 +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 05CA9B5D86F for ; Fri, 18 Dec 2015 19:16:51 +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 8DC8118CC7CC for ; Fri, 18 Dec 2015 19:16:51 +0900 (JST) Received: from [221.186.184.76] (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id 8474112058F; Fri, 18 Dec 2015 19:16:51 +0900 (JST) X-Original-To: ruby-core@ruby-lang.org Delivered-To: ruby-core@ruby-lang.org Received: from o2.heroku.sendgrid.net (o2.heroku.sendgrid.net [67.228.50.55]) by neon.ruby-lang.org (Postfix) with ESMTPS id B3E3E120582 for ; Fri, 18 Dec 2015 19:16:47 +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=I2T7M/fWXckMbj5QSTKgD8TQ/iY=; b=r+nd7tHNJZg3xwSsEy 90YakRpqrtn5q0xQpndBvxVUtmU4zwqQu6XGENkwNl4MyoNdV6rBY7LEAdg17Ppe /jdbQXDHCt2kiGZ1OnGSmMUbEQjd3ZlAXhucOHnHToYuWB1cTDsnn6TWT0gp5kM2 ArNuwyv6l8Lf3h3hI6QmnY954= Received: by filter0557p1mdw1.sendgrid.net with SMTP id filter0557p1mdw1.2968.5673DD0A4 2015-12-18 10:16:42.08772754 +0000 UTC Received: from herokuapp.com (ec2-54-159-2-169.compute-1.amazonaws.com [54.159.2.169]) by ismtpd0001p1iad1.sendgrid.net (SG) with ESMTP id AAQ-qw4HQ46hJvcWigg2kQ Fri, 18 Dec 2015 10:16:42.163 +0000 (UTC) Date: Fri, 18 Dec 2015 10:16:42 +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: 46957 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 11692 X-Redmine-Issue-Author: gazay X-Redmine-Issue-Assignee: ko1 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/Ymy4QrNMhiuLXJG8OTL2vJD1yS5f++8ux+4CItkbsAMEYjaPOr1r8UGTP//2yo SC2GWUlUXgxLzCWtWE30mEVweGae2Zit5JCSRcJzwJcLzIcnCzp0vB8Y4Lg2QTDWhmviMZj93rEgZi FQRHG5WldyAElETOEbe4I/XKRIBItsHSdQQwu+8UE5Y4cq7reWNPCiU8Mw== X-ML-Name: ruby-core X-Mail-Count: 72362 Subject: [ruby-core:72362] [Ruby trunk - Bug #11692] [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 updated by Alex Gaziev. Thank you, didn't know that ---------------------------------------- Bug #11692: [PATCH] Re-enable GC if stack overflow was caught from signal handler https://bugs.ruby-lang.org/issues/11692#change-55655 * Author: Alex Gaziev * Status: Closed * Priority: Normal * Assignee: Koichi Sasada * ruby -v: * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: REQUIRED ---------------------------------------- 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) gc_threads_issue.rb (1.53 KB) re-enable-GC-if-stack-overflow-was-caught-from.patch (1.5 KB) -- https://bugs.ruby-lang.org/