From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 24196 invoked by alias); 16 Jul 2014 20:10:51 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 24002 invoked by uid 89); 16 Jul 2014 20:10:45 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=3.4 required=5.0 tests=AWL,BAYES_00,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-qc0-f195.google.com Received: from mail-qc0-f195.google.com (HELO mail-qc0-f195.google.com) (209.85.216.195) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Wed, 16 Jul 2014 20:10:42 +0000 Received: by mail-qc0-f195.google.com with SMTP id o8so414185qcw.10 for ; Wed, 16 Jul 2014 13:10:40 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.224.92.83 with SMTP id q19mr48310799qam.29.1405541440279; Wed, 16 Jul 2014 13:10:40 -0700 (PDT) Received: by 10.140.100.181 with HTTP; Wed, 16 Jul 2014 13:10:40 -0700 (PDT) Date: Wed, 16 Jul 2014 20:10:00 -0000 Message-ID: Subject: Some programs (vi, ssh) crash when screen buffer height is big From: sous lesquels To: cygwin@cygwin.com Content-Type: text/plain; charset=UTF-8 X-SW-Source: 2014-07/txt/msg00185.txt.bz2 **** Environment CYGWIN_NT-6.1 1.7.29(0.272/5/3) 2014-04-07 13:46 Windows 7 **** Steps to reproduce the issue: - With vi.exe Execute the following bash script: #!/bin/bash for i in {1..123}; do echo -e "\033[5A\033[50C\033[0;35mhello\033[0m" head -n1000 /var/log/setup.log done vi /var/log/setup.log vi breaks with something as: 0 [main] vi 13200 C:\cygwin64\bin\vi.exe: *** fatal error - cmalloc would have returned NULL /4.sh: line 6: 13200 Hangup vi /var/log/setup.log (note 4.sh is the file name I used to put the above script in and run it from there) and leaves a vi.exe.stackdump with the following contents: Stack trace: Frame Function Args 001004D2D08 0018006F26E (001801E8666, 001801E8DD9, 00000000000, 00000229480) 001004D2D08 00180046E32 (0000022A4E8, FF000000808080, FFFF000000FF00, FF00FF000000FF) 001004D2D08 00180046E72 (001801E8643, 00000000000, 00000000000, 00000000000) 001004D2D08 00180043983 (00076D22F7E, 00000000000, 00000000000, 00000000000) 001004D2D08 0018007B781 (FFFF000000FF00, FF00FF000000FF, FFFFFF0000FFFF, 00180000088) 001004D2D08 0018007B91F (00000000000, 00000000000, 00000000000, 00000000000) 001004D2D08 0018007E024 (00000000000, 00000000000, 00000000000, 00000000000) 001004D2D00 001801266FD (00000000000, 00000000000, 1A1311121C011615, 001802E2788) 001004D4160 0018011197B (00000000000, 00000000000, 1A1311121C011615, 001802E2788) End of stack trace - With ssh.exe ssh to some machine (Linux in my case) and execute the following bash script: #!/bin/bash for i in {1..123}; do echo -e "\033[5A\033[50C\033[0;35mhello\033[0m" head -n1000 /var/log/dmesg done vi /var/log/dmesg ssh breaks with: 0 [main] ssh 12464 C:\cygwin64\bin\ssh.exe: *** fatal error - cmalloc would have returned NULL and leaves a ssh.exe.stackdump file in the current working directory with the following contents: Stack trace: Frame Function Args 006000A267F 0018006F26E (001801E8666, 001801E8DD9, 00000000000, 00000226B60) 006000A267F 00180046E32 (00000227BC8, FF000000808080, FFFF000000FF00, FF00FF000000FF) 006000A267F 00180046E72 (001801E8643, 00000000000, 00000000000, 00100000002) 006000A267F 00180043983 (00076D22F7E, 00000000000, 0018007B522, 0000000270E) 006000A267F 0018007B781 (FFFF000000FF00, FF00FF000000FF, FFFFFF0000FFFF, 00180000088) 006000A267F 0018007B91F (000000001DC, 00000000000, 00000000000, 00000000000) 006000A267F 0018007E024 (00600077990, 00000000007, 00600077990, 00000000007) 006000A0490 001801266FD (00100426798, 00000000000, 00000000000, 00000000000) 0060006E850 0018011197B (00000000000, 00000000000, 00000000000, 00000000000) 0060006E850 00000004000 (00000000000, 00000000000, 00000000000, 21EF00000000) 0060006E850 00100426798 (00000000000, 001004928A0, 2BE9E0C5343523AB, 00000228090) 0060006E850 00600068670 (001004928A0, 2BE9E0C5343523AB, 00000228090, 00000000000) 0060006E850 003FEF96000 (001004928A0, 2BE9E0C5343523AB, 00000228090, 00000000000) End of stack trace **** More information: - For both variants, you may need to tweak the number 123 in the for loop above or the location of files if you don't have these - they should be there, but if not pick any file with some log-like text in it (a few hundred lines should be enough) - The variants are just quick and dirty ways to reproduce - crashes happen in regular work in various situations (i.e. real scenarios, not contrived as above) - Crashes can be reproduced always - Taking the same steps as above when running from Cygwin terminal (i.e. the one that comes bundled with Cygwin itself) does not result in a crash -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple