Re: t5541-http-push hanging

From: Shawn O. Pearce <spearce@spearce.org>
Date: Nov 12, 2009, 04:49 UTC
Message-ID: <20091112044906.GQ11919@spearce.org>
In-Reply-To: <B17AB159-E217-4E1F-BEA3-97E5892C13F4@gernhardtsoftware.com>

Brian Gernhardt <brian@gernhardtsoftware.com> wrote:

> My build script for git has been hanging at t5541.2 and I haven't had the tuits to discover why.  Here's what I've gotten so far, in case anyone can figure it out faster:

...

> 	git clone $HTTPD_URL/smart/test_repo.git test_repo_clone

...

> [Wed Nov 11 06:19:39 2009] [error] [client 127.0.0.1] git-http-backend(59490) malloc: *** error for object 0x100200340: incorrect checksum for freed object - object was probably modified after being freed.
> [Wed Nov 11 06:19:39 2009] [error] [client 127.0.0.1] *** set a breakpoint in malloc_error_break to debug

I can't reproduce this on 10.5.8. Can you try running it in the debugger and putting a breakpoint where they suggest? Maybe it will help give us some context information:

  REQUEST_METHOD=GET \
  PATH_TRANSLATED=`pwd`/.git/info/refs \
  QUERY_STRING=service=git-upload-pack \
  gdb ./git-http-backend

  b malloc_error_break
  run

I suspect that's where our failure is, the code path for the actual common negotiation and data transfer is shorter, and less likely to need to do a memory allocation... and therefore a free.

-- 
Shawn.