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Re: Possible bug: 'git svn fetch' causes perl crash after update to 1.8.0

From: Stefan Sperling <stsp_at_elego.de>
Date: Thu, 11 Jul 2013 18:35:07 +0200

On Thu, Jul 11, 2013 at 07:47:19PM +0400, Pavel Borzenkov wrote:
> Hi,
> after update to svn 1.8.0 I have 100% reproducible perl crash during
> 'git svn fetch' with the following error (full backtrace + link to
> core at the end of the message):
> *** Error in `/usr/bin/perl': double free or corruption (!prev):
> 0x000000000332fc90 ***
> Downgrading to 1.7.10 helps.
> Any advice on what could be the reason?

From the backtrace you provided, it looks like a pool cleanup handler
is trying to free memory that is already freed, or is trying to free
an invalid pointer. It's hard to say where the problem originates
since at the time the pool cleanup handler runs the error has already
happened elsewhere. Off-hand, I don't know what could be going wrong.

This could well be a bug in Subversion 1.8. Or it could be a bug
in the perl script (because, yes, perl scripts need to manage
memory when using the swig bindings -- the bindings are a straight
wrapper around the C API and do not abstract memory management
away from the scripting language).

Can you run this script in Valgrind or a similar analysis tool?
That might help shed more light on the issue.
Received on 2013-07-11 18:35:46 CEST

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