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Date: Sun, 28 Mar 2010 16:23:43 +0200
From: Matthias Andree <matthias DOT andree AT gmx DOT de>
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Subject: Re: "svn --version" halts in 1.7.2-2
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Am 27.03.2010 00:15, schrieb David Rothenberger:
> On 3/26/2010 2:07 PM, Corinna Vinschen wrote:
>> On Mar 26 11:12, David Rothenberger wrote:
>>> On 3/26/2010 2:32 AM, Corinna Vinschen wrote:
>>>> On Mar 26 15:40, Nayuta Taga wrote:
>>>>> "svn --version" hals in 1.7.2-2 on both Windows7 and XP.
>>> [snip]
>>>>
>>>> Works for me.  BLODA?
>>>
>>> I'm able to reproduce this on one of my three Windows XP machines.
>>> Ironically, the only one without a Symantec product installed.
>>>
>>> On 3/26/2010 4:23 AM, Dave Korn wrote:
>>>>   I had mysterious problems with svn once which didn't go away until I got rid
>>>> of all the sasl2 stuff from my installation, so this theory is worth pursuing.
>>>
>>> I recompiled without sasl2 support directly in svn and that fixed the
>>> problem for me. This didn't require disabling serf, by the way.
>>>
>>> I'm not sure why this is hanging on some machines and not others. I see
>>> in Process Explorer there's a UDP connection related to sasl2 open when
>>> the process is hanging, but I haven't had time to investigate further.
>> 
>> There's an open UDP connection when calling `svn --version'???
> 
> Yup. Here's the thread stack at the time the connection was created:
> 
> !connect+0x53
> !cygwin_internal+0x2b0d5
> !setlogmask+0xce8
> !setlogmask+0xdff
> !aclcheck+0x11836
> !sasl_log+0x123
> !sasl_get_plugin+0xa6
> !sasl_load_plugins+0x2e3
> !sasl_client_init+0xdf
> !svn_ra_svn__sasl_init+0x9c
> !svn_atomic__init_once+0x49
> !svn_ra_svn__sasl_init+0x22
> !svn_ra_print_modules+0x5d
> 
> The sasl_log thing caused me to check /var/log/messages. Here's what
> I found:
> 
> Mar 26 15:53:28 localhost unable: to dlopen /usr/lib/sasl2/cygdigestmd5-2.dll: No such file or directory
> Mar 26 15:53:28 localhost unable: to dlopen /usr/lib/sasl2/cygotp-2.dll: No such file or directory
> 
> Which is weird, because those DLLs are there. So, next I tried an
> strace. I noticed that the /usr/lib/sasl2/*.la files were being
> opened, which also seemed weird.
> 
> So I tried uninstalling libsasl2-devel. It worked! No hang!  This
> seems to be the key. The sasl2 initialization appears to hang if the
> -devel package is installed, otherwise it works fine.
> 
>> I just tested on an up-to-date XP SP3 machine and it also works fine
>> there, no hangs.
> 
> Works fine for me on all machines without libsasl2-devel. BTW, it
> appears Matthias also had the -devel package installed, because his
> strace also shows attempts to open the .la files in /usr/lib/sasl2.
> 

Indeed I used to have libsasl2-devel installed.  For me, too, removing
libsasl2-devel has fixed the hang.

-- 
Matthias Andree

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