Re: Git core dump checking out main on armv7

Hi Robert,

On Tue, Jun 18, 2024 at 06:43:44PM +0200, Robert Clausecker wrote:
> Hi Bob,
> 
> I'm not sure what the exact experiment would be.  The likely cause is
> that the meta data is too large to fit into the address space available.
> You might be able to make things work by doing shallow fetches / pulls,
> as these don't pull the intermediate commits.
> 
I just tried re-cloning a fresh copy of the archive as an experiment:

# git clone --depth=1 -o freebsd https://git.FreeBSD.org/src.git /usr/src
Cloning into '/usr/src'...
remote: Enumerating objects: 104618, done.
remote: Counting objects: 100% (104618/104618), done.
remote: Compressing objects: 100% (88910/88910), done.
remote: Total 104618 (delta 22080), reused 43680 (delta 11795), pack-reused 0
Receiving objects: 100% (104618/104618), 345.12 MiB | 1.09 MiB/s, done.
fatal: pack is corrupted (SHA1 mismatch)
fatal: fetch-pack: invalid index-pack output

I've been seeing this sort of error repeated over the past weeks.
It doesn't look like a local problem to me.

Thanks for writing,

bob prohaska
 
> Am Tue, Jun 18, 2024 at 09:29:41AM -0700 schrieb bob prohaska:
> > On Tue, Jun 18, 2024 at 05:50:58PM +0200, Robert Clausecker wrote:
> > > Hi Bob,
> > > 
> > > This sounds like an address space exhaustion.  Does this error also
> > > appear on an armv7 jail on an arm64 host?
> > > 
> > >
> >  
> > I can try the experiment if there's a description on how to do it.
> > 
> > The git core dump occurred trying to update 14.0-RELEASE-p6 FreeBSD.
> > What I'm trying to do is follow stable/14, but somehow got into a
> > state where the local source repository reported "up to date".
> > Attempts to find a releng or stable branch failed, reporting missing
> > files, so I decided to switch to main and then look for a suitable
> > branch again.
> > 
> > Maybe this is corrupted local repository, but being a microSD hosted
> > system I wanted to minimize re-writes. Earlier attempts to re-clone
> > failed, which I attributed to the transition to 14.1. The core dump
> > looks like it might be a bug. 
> > 
> > Thanks for writing,
> > 
> > bob prohaska
> > 
> > > Am Tue, Jun 18, 2024 at 08:21:21AM -0700 schrieb bob prohaska:
> > > > Git dumped core while trying to check out main on an armv7 RPi2.
> > > > The core file is about half a GB, which seems oddly large. I've
> > > > placed a copy at
> > > > http://www.zefox.net/~fbsd/git.core
> > > > in case anybody's willing to look at it. 
> > > > 
> > > > Thanks for reading,
> > > > 
> > > > bob prohaska
> > > > 
> > > > 
> > > > 
> > > 
> > > -- 
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