Re: [BUG] unpack-objects abnormal exit when pushing

From: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Date: Nov 9, 2009, 11:56 UTC
Message-ID: <vpqhbt3ap3w.fsf@bauges.imag.fr>
In-Reply-To: <vpqeio8eou4.fsf@bauges.imag.fr>

Hi again,

I just found a way to reproduce the problem using plain SSH, and not Git:

$ ssh localhost cat < random.bin | wc
    249    1460   65536
$ cat < random.bin | wc
    796    4545  204800

So, sshd is broken on this machine, and I don't think Git is the one to blame.

Matthieu Moy <Matthieu.Moy@grenoble-inp.fr> writes:

Show 63 quoted lines

> Hi,
>
> I'm hitting a bug when git-push-ing to a Linux PPC machine. In
> general, pushing works well, but pushing some particular commits
> breaks reproducibly with :
>
> fatal: early EOF
> error: unpack failed: unpack-objects abnormal exit
> To ssh://localhost//home/perms/moy/prive/dest
>  ! [remote rejected] master -> master (n/a (unpacker error))
>
> I've put the guilty files on my website and wrote a reproduction
> script:
>
> #!/bin/sh
>
> rm -fr source dest
> git init source
> git init --bare dest
> dest=$PWD/dest
> cd source
> echo foo > bar.txt
> git add .
> git commit -m init
> git push ssh://localhost/$dest master
> wget 'http://www-verimag.imag.fr/~moy/tmp/git-bug/Conception Manual.docx'
> wget 'http://www-verimag.imag.fr/~moy/tmp/git-bug/Extreme Programming.doc'
> git add .
> git commit -m "bug"
> git push ssh://localhost/$dest master
>
> The full output is attached (the error message for the last push is
> given above). The machine on which I get this (let's call it "A")
> says :
>
> $ ssh -Version
> OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
> $ uname -a
> Linux A 2.6.18-128.7.1.el5 #1 SMP Wed Aug 19 04:08:13 EDT 2009 ppc64 ppc64 ppc64 GNU/Linux
> $ cat /etc/redhat-release                                                                                                                                           
> Red Hat Enterprise Linux Server release 5.4 (Tikanga)
> (it's a 32-bit distribution although the machine is 64bits)
> $ git --version
> git version 1.6.5.2
> (compiled myself, "make test" passes)
>
> According to my experiments, the problem is on the receiver side. If I
> do the same as above, with source/ and dest/ directories on two
> different machines, then if source/ in on A and dest/ anywhere else,
> it works, and if dest/ is on machine A, I get the same error.
>
> If I push using "file://" instead of "ssh://", then everything works
> well.
>
> If instead of push-ing, I go to dest/ and do a fetch, then it works
> well too.
>
> Does anyone have any idea on what's going on?
>
> If anyone has a machine similar to mine (ppc64), can he/she run my
> reproduction script and tell me if the bug happens?
>
> Thanks a lot,

-- 
Matthieu Moy
http://www-verimag.imag.fr/~moy/