From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS4713 221.184.0.0/13 X-Spam-Status: No, score=-3.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from neon.ruby-lang.org (neon.ruby-lang.org [221.186.184.75]) by dcvr.yhbt.net (Postfix) with ESMTP id 003D51F461 for ; Wed, 4 Sep 2019 00:50:48 +0000 (UTC) Received: from neon.ruby-lang.org (localhost [IPv6:::1]) by neon.ruby-lang.org (Postfix) with ESMTP id CC1AB120A14; Wed, 4 Sep 2019 09:50:38 +0900 (JST) Received: from o1678948x4.outbound-mail.sendgrid.net (o1678948x4.outbound-mail.sendgrid.net [167.89.48.4]) by neon.ruby-lang.org (Postfix) with ESMTPS id 44D4D120A21 for ; Wed, 4 Sep 2019 09:50:36 +0900 (JST) Received: by filter0088p3iad2.sendgrid.net with SMTP id filter0088p3iad2-23992-5D6F0A5B-32 2019-09-04 00:50:35.698727853 +0000 UTC m=+30023.301629302 Received: from herokuapp.com (unknown [35.153.73.163]) by ismtpd0050p1iad1.sendgrid.net (SG) with ESMTP id jqO1zi2sTLu3_B3rOYLv2Q for ; Wed, 04 Sep 2019 00:50:35.639 +0000 (UTC) Date: Wed, 04 Sep 2019 00:50:35 +0000 (UTC) From: kevin@vcsjones.com Message-ID: References: Mime-Version: 1.0 X-Redmine-MailingListIntegration-Message-Ids: 70320 X-Redmine-Project: ruby-trunk X-Redmine-Issue-Id: 16136 X-Redmine-Issue-Author: deivid X-Redmine-Sender: vcsjones 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: =?us-ascii?Q?wvHzwynZJiwWwDN9JCeLUtbgfa=2FDmPDNgmweYP576edORPiiMC0M9ul50lJkKt?= =?us-ascii?Q?zyDGCifIVn0QLjZ3sUxUQUHcw8Y+cqE3n3R7wT1?= =?us-ascii?Q?jr7eAajcyDjjI9CPc5VdDllM81=2F2tc=2Fg5etrQhi?= =?us-ascii?Q?WCzIzFPxmYvlSyrRGGc1ZCaejGi0QeyAO=2FzePm9?= =?us-ascii?Q?J2pg66ve2LwwC+aVTFIQdU3f1nNBWFxlAFA=3D=3D?= To: ruby-core@ruby-lang.org X-ML-Name: ruby-core X-Mail-Count: 94766 Subject: [ruby-core:94766] [Ruby master Bug#16136] String corruption in 2.6.4 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: , Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: ruby-core-bounces@ruby-lang.org Sender: "ruby-core" Issue #16136 has been updated by vcsjones (Kevin Jones). Hello, We started running in to this issue as well with Ruby 2.6.4. We are seeing = consistent but non-deterministic string corruption in one of our applicatio= ns. As an example, we see something like: ``` undefined method `"defense_profile_extension_id\x00eq"' ``` Note the `\x00` in the string does not belong there, it should be a `_`. Ho= wever these results are not consistent. Another run of the application with= zero code changes produced this error: ``` undefined method `"\x00\x00\x00\x00\x00\x00\x00\x00f_profile_extension_id_e= q" ``` Unfortunately, we have yet to be able to create a small reproduction of thi= s issue. We can make it happen consistently in a very large code base thoug= h. I did manage to run `git bisect` on a locally compiled ruby and determin= ed that the change that introduced is https://github.com/ruby/ruby/commit/d= a36d5700d9e0e66411d93595b6f654c85853fa1. When we revert that change, the issue can no longer be reproduced. ---------------------------------------- Bug #16136: String corruption in 2.6.4 https://bugs.ruby-lang.org/issues/16136#change-81379 * Author: deivid (David Rodr=EDguez) * Status: Open * Priority: Normal * Assignee: = * Target version: = * ruby -v: ruby 2.6.4p104 (2019-08-28 revision 67798) [x86_64-linux] * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN ---------------------------------------- When trying to upgrade activeadmin's tests to use ruby 2.6.4, I got some ve= ry weird failures where some strings would end up containing random content= . See https://circleci.com/gh/activeadmin/activeadmin/20329 for an example = of those failures. Failures are somewhat random but the test suite seems to= consistently fail on 2.6.4 and pass on 2.6.3. I also managed to reproduce = the failures locally, sometimes very consistently, but now it's hardly ever= happening... :/ I looked at the changes in 2.6.4 and it looks like https://bugs.ruby-lang.o= rg/issues/16105 and/or https://bugs.ruby-lang.org/issues/15946 could be rel= ated, because the region of the Rails code where the corrupted string is cr= eated seems to be doing something similar to the reported issues: https://g= ithub.com/rails/rails/blob/b7e591a55f4de5f1511c3b9255b3b25159b8ba41/actionp= ack/lib/action_dispatch/routing/mapper.rb#L404-L412. Sorry I'm not really sure how to create a reproducible example, or how to d= ebug this issue. Just opening this in case it could help noticing something= obviously wrong with the mentioned patches. -- = https://bugs.ruby-lang.org/ Unsubscribe: