Re: Reproducible, corrupt packfile after fresh git-svn checkout message 3 of 20)

[gitml.jexpert@recursor.net]

Great! Thank you all guys for your extensive instructions!

@Thomas: I only had to add libexpat1-dev to the list.

I checked out Git v1.8.3.4 as this was my used verion and built as
instructed. The error is still reproducible using the "CFLAGS = -O0 -g"
build.

So - now the puzzling thing: With valgrind it seems to work! 
If I run it plain, it doesn't:

/tmp/project.git $ valgrind --track-origins=yes  ~/projects/git.git/git-fsck
==3431== Memcheck, a memory error detector
==3431== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==3431== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==3431== Command: /home/ben/projects/git.git/git-fsck
==3431== 
==3431== Warning: set address range perms: large range [0x70b5000, 0x2b0ff000) (defined)
Checking object directories: 100% (256/256), done.
==3431== Warning: set address range perms: large range [0x3959d000, 0x49d53000) (defined)
Checking objects: 100% (63588/63588), done.
Checking connectivity: 68696, done.
==3431== 
==3431== HEAP SUMMARY:
==3431==     in use at exit: 7,574,911 bytes in 15,428 blocks
==3431==   total heap usage: 422,498 allocs, 407,070 frees, 4,396,939,465 bytes allocated
==3431== 
==3431== LEAK SUMMARY:
==3431==    definitely lost: 0 bytes in 0 blocks
==3431==    indirectly lost: 0 bytes in 0 blocks
==3431==      possibly lost: 0 bytes in 0 blocks
==3431==    still reachable: 7,574,911 bytes in 15,428 blocks
==3431==         suppressed: 0 bytes in 0 blocks
==3431== Rerun with --leak-check=full to see details of leaked memory
==3431== 
==3431== For counts of detected and suppressed errors, rerun with: -v
==3431== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 2 from 2)
/tmp/project.git $ ~/projects/git.git/git-fsck
Checking object directories: 100% (256/256), done.
error: packed 49cdd0b21a351f3366008615d2cf8d03ca943978 from .git/objects/pack/pack-6a6f5355584a5d71215d5fc867ce09602ceab533.pack is corrupt
*** glibc detected *** <unknown>: free(): invalid pointer: 0x00007f8576682010 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x7eb96)[0x7f85ad765b96]
[0x4e727c]


I'm using a i5-3340M on Linux Mint 14 with a offical Linux 3.9.9
gcc (Ubuntu/Linaro 4.7.2-2ubuntu1) 4.7.2

Any further hints?


> Try something like
>
>   # The package names might be wrong and/or you may need additional -dev
>   # packages, I don't know the specifics for ubuntu
>   apt-get install gcc make valgrind libcurl-dev zlib-dev
>   cd
>   git clone git://git.kernel.org/pub/scm/git/git.git
>   cd git
>   echo 'CFLAGS = -O0 -g' >>config.mak
>   make
>   cd /path/to/repo
>   valgrind --track-origins=yes ~/git/git-fsck
>
> It'll be very slow, at least 20x the normal runtime, so don't be
> surprised if it doesn't seem to get anywhere at first.
>