threads / bug / 21539

[BUG]

Subject: [BUG]

## tl;dr

4 messages between Nov 8, 2009 and Nov 9, 2009.

replies: 3people: 2as markdown or json

Matthieu Moy· Nov 8, 2009, 20:36 UTC · lore

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,

Initialized empty Git repository in /perms/moy/prive/source/.git/
Initialized empty Git repository in /perms/moy/prive/dest/
[master (root-commit) e14141d] init
 1 files changed, 1 insertions(+), 0 deletions(-)
 create mode 100644 bar.txt
Counting objects: 3, done.
Writing objects:  33% (1/3)   
Writing objects:  66% (2/3)   
Writing objects: 100% (3/3)   
Writing objects: 100% (3/3), 209 bytes, done.
Total 3 (delta 0), reused 0 (delta 0)
To ssh://localhost//home/perms/moy/prive/dest
 * [new branch]      master -> master
--2009-11-08 21:15:27--  http://www-verimag.imag.fr/~moy/tmp/git-bug/Conception%20Manual.docx
Resolving www-verimag.imag.fr... 129.88.43.46
Connecting to www-verimag.imag.fr|129.88.43.46|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1064912 (1.0M) [application/x-zip]
Saving to: `Conception Manual.docx'

     0K .......... .......... .......... .......... ..........  4% 42.9M 0s
    50K .......... .......... .......... .......... ..........  9% 38.1M 0s
   100K .......... .......... .......... .......... .......... 14% 51.4M 0s
   150K .......... .......... .......... .......... .......... 19% 47.1M 0s
   200K .......... .......... .......... .......... .......... 24% 54.5M 0s
   250K .......... .......... .......... .......... .......... 28% 58.4M 0s
   300K .......... .......... .......... .......... .......... 33% 53.5M 0s
   350K .......... .......... .......... .......... .......... 38% 64.5M 0s
   400K .......... .......... .......... .......... .......... 43% 42.0M 0s
   450K .......... .......... .......... .......... .......... 48% 55.7M 0s
   500K .......... .......... .......... .......... .......... 52% 61.9M 0s
   550K .......... .......... .......... .......... .......... 57% 54.4M 0s
   600K .......... .......... .......... .......... .......... 62% 56.3M 0s
   650K .......... .......... .......... .......... .......... 67% 58.8M 0s
   700K .......... .......... .......... .......... .......... 72% 61.6M 0s
   750K .......... .......... .......... .......... .......... 76% 53.5M 0s
   800K .......... .......... .......... .......... .......... 81% 44.3M 0s
   850K .......... .......... .......... .......... .......... 86% 54.4M 0s
   900K .......... .......... .......... .......... .......... 91% 63.9M 0s
   950K .......... .......... .......... .......... .......... 96% 75.0M 0s
  1000K .......... .......... .......... .........            100% 89.8M=0.02s

2009-11-08 21:15:27 (54.1 MB/s) - `Conception Manual.docx' saved [1064912/1064912]

--2009-11-08 21:15:27--  http://www-verimag.imag.fr/~moy/tmp/git-bug/Extreme%20Programming.doc
Resolving www-verimag.imag.fr... 129.88.43.46
Connecting to www-verimag.imag.fr|129.88.43.46|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 521216 (509K) [application/msword]
Saving to: `Extreme Programming.doc'

     0K .......... .......... .......... .......... ..........  9% 42.7M 0s
    50K .......... .......... .......... .......... .......... 19% 38.3M 0s
   100K .......... .......... .......... .......... .......... 29% 51.4M 0s
   150K .......... .......... .......... .......... .......... 39% 48.9M 0s
   200K .......... .......... .......... .......... .......... 49% 51.9M 0s
   250K .......... .......... .......... .......... .......... 58% 57.0M 0s
   300K .......... .......... .......... .......... .......... 68% 54.6M 0s
   350K .......... .......... .......... .......... .......... 78% 56.1M 0s
   400K .......... .......... .......... .......... .......... 88% 52.5M 0s
   450K .......... .......... .......... .......... .......... 98% 75.4M 0s
   500K .........                                             100% 17.6M=0.01s

2009-11-08 21:15:27 (52.3 MB/s) - `Extreme Programming.doc' saved [521216/521216]

[master c0fa75f] bug
 2 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 Conception Manual.docx
 create mode 100644 Extreme Programming.doc
Counting objects: 5, done.
Delta compression using up to 16 threads.
Compressing objects:  25% (1/4)   
Compressing objects:  50% (2/4)   
Compressing objects:  75% (3/4)   
Compressing objects: 100% (4/4)   
Compressing objects: 100% (4/4), done.
Writing objects:  25% (1/4)   
Writing objects:  50% (2/4)   
Writing objects:  75% (3/4)   
Writing objects: 100% (4/4)   
Writing objects: 100% (4/4), 1.38 MiB, done.
Total 4 (delta 0), reused 0 (delta 0)
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))
error: failed to push some refs to 'ssh://localhost//home/perms/moy/prive/dest'

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

Matthieu Moy· Nov 8, 2009, 21:28 UTC · re: Matthieu Moy · lore

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

Hi,

Sorry, I forgot to set the subject before sending. The bug report still holds:

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/

Matthieu Moy· Nov 9, 2009, 11:56 UTC · re: Matthieu Moy · lore

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

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/

Junio C Hamano· Nov 9, 2009, 16:56 UTC · re: Matthieu Moy · lore

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

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

Show 10 quoted lines

> 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.

Yuck; that sounds scary.