Re: [Qemu-devel] qemu 2.0.0-rc2 crash

[Marcel Apfelbaum <marcel.a@redhat.com>]

On Thu, 2014-04-10 at 18:24 +0200, Marcin Gibuła wrote:
> W dniu 2014-04-10 15:43, Marcel Apfelbaum pisze:
> > On Thu, 2014-04-10 at 14:55 +0200, Marcin Gibuła wrote:
> >> Hi,
> >>
> >> I've been playing with QEMU 2.0-rc2 and found a crash that isn't there
> >> in 1.7.1.
> > Hi Marcin,
> > Thanks for reporting the bug!
> >
> > Do you have a development environment?
> > If you do, and the reproduction is fast (and you already have a setup),
> > a git bisect to find the problematic commit would be appreciated,
> 
> Hi,
> 
> yes, it's on development environment. If you could point me to some 
> quick guide to bisecting qemu, I'll be happy to do it.

Sure! Thanks for helping.

1. Start:
     git bisect start
     git bisect good <commit hash or tag name of the version that works> (Ex: v1.7.1)
     git bisect bad <commit hash or tag name of the non working version> (Ex: HEAD)
2. Git will checkout commits for you and you have to check and answer:
     git bisect good or git bisect bad 
3. Git will show you the first bad commit.

A more detailed version here:
http://git-scm.com/book/en/Git-Tools-Debugging-with-Git
Look for git-bisect.

Thanks,
Marcel

>