On Thu, Apr 14, 2016 at 07:30:43PM +0200, Paolo Bonzini wrote: > On 14/04/2016 18:47, Marc Haber wrote: > >> > Ok, then I guess bisection is needed. Please first try commit > >> > 45bdbcfdf241. > > I did git checkout 45bdbcfdf241 and built the resulting kernel > > 4.4.0-rc5. This one has now been running for ten hours, which is > > threefold the longest time that a faulty kernel has held before a VM > > experienced corruption. So I guess, that one is fine. > > Interesting, this means it's not a KVM bug. You can ignore my patch > from yesterday (though we'll get it in anyway). > > > Since 4.5.0-rc1 is bad, I guess I do: > > > > git checkout 45bdbcfdf241 > > git bisect start > > git bisect good > > git bisect bad v4.5.0-rc1 > > This is correct but you also want to do > > git bisect good 4.4.0 > git bisect good 4.4.0-rc5 > > so that bisection basically works through the commits in the merge window. So I start over from this: [47/544]mh@fan:~/linux/debug/linux$ git checkout 45bdbcfdf241 HEAD is now at 45bdbcf... kvm: x86: Fix vmwrite to SECONDARY_VM_EXEC_CONTROL [48/545]mh@fan:~/linux/debug/linux$ git bisect start [49/546]mh@fan:~/linux/debug/linux$ git bisect good [50/547]mh@fan:~/linux/debug/linux$ git bisect bad v4.5-rc1 Bisecting: 5761 revisions left to test after this (roughly 13 steps) [cbd88cd4c07f9361914ab7fd7e21c9227986fe68] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux [51/548]mh@fan:~/linux/debug/linux$ git bisect good v4.4 Bisecting: 5468 revisions left to test after this (roughly 12 steps) [f9a03ae123c92c1f45cd2ca88d0f6edd787be78c] Merge tag 'for-f2fs-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs [52/549]mh@fan:~/linux/debug/linux$ git bisect good v4.4-rc5 Bisecting: 5468 revisions left to test after this (roughly 12 steps) [f9a03ae123c92c1f45cd2ca88d0f6edd787be78c] Merge tag 'for-f2fs-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs [53/550]mh@fan:~/linux/debug/linux$ This is going to take a few days as detecting a "bad" version may take a few hours. Greetings Marc -- ----------------------------------------------------------------------------- Marc Haber | "I don't trust Computers. They | Mailadresse im Header Leimen, Germany | lose things." Winona Ryder | Fon: *49 6224 1600402 Nordisch by Nature | How to make an American Quilt | Fax: *49 6224 1600421 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
