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Subject: Re: subversion 1.9.3-1 segfault
To: cygwin AT cygwin DOT com
References: <56BA2465 DOT 9040809 AT sbcglobal DOT net>
From: David Rothenberger <daveroth AT acm DOT org>
Message-ID: <56BF78DF.7090000@acm.org>
Date: Sat, 13 Feb 2016 10:41:35 -0800
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Reply-To: cygwin AT cygwin DOT com

On 2/9/2016 9:39 AM, Greg Chicares wrote:
> 'svn' segfaulted on a routine command:
> 
> /lmi/mirror/lmi[0]$svn status --show-updates
> 
> svn: E170013: Unable to connect to a repository at URL 'http://svn.savannah.nongnu.org/svn/lmi/lmi/trunk'
> svn: E000104: Error running context: Connection reset by peer
> svn update
> Updating '.':
> zsh: segmentation fault (core dumped)
> 
> The command worked as expected when I reran it (after 'svn cleanup'):
[snip]
> 
> It's working now, and I can't reproduce the problem, but I thought
> I should report it anyway. I've attached cygcheck -s -v -r output
> and copied 'svn.exe.stackdump' below.
> 
> Exception: STATUS_ACCESS_VIOLATION at eip=00000000
> eax=200C61B8 ebx=200A8DE8 ecx=0022C39C edx=00000000 esi=00000000 edi=00000011
> ebp=200C01A0 esp=0022C35C program=C:\cygwin-lmi\bin\svn.exe, pid 1736, thread main
> cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
> Stack trace:
> Frame     Function  Args
> 200C01A0  00000000 (00000000, 00000000, 6C1D5580, 200A0E90)
> 200A8DE8  00000000 (00000002, 200A8DE8, 2009EDC0, 200AAEC8)
> 2009F5D8  00000000 (6C701180, 6C701160, 00000000, 2009F978)
> 2009EDC0  2009F628 (00000000, 20052794, 200AAF00, 00000000)
> 20052790  200C81B8 (2004D788, 200430F4, 00000000, 20052C08)
> 200430F0  2009EDC0 (2003EF00, 20038D6C, 20054CB0, 00000000)
> 20038D68  20052790 (00000000, 00000000, 20038E88, 00000000)

I wasn't able to get any useful information out of the stack trace.
Running addr2line does not show any functions. I'm not sure if this is
because you don't have the subversion-debuginfo package installed. I
would suggest you install this in case it makes a difference and the
failure happens again.

You did the right thing by reporting it, but I don't think there's
anything I can do if you can't reproduce the problem. Sorry.


-- 
David Rothenberger  ----  daveroth AT acm DOT org
Cygwin Subversion maintainer

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