On Thu, Apr 21, 2016 at 02:37:11PM +0200, Borislav Petkov wrote: > On Thu, Apr 21, 2016 at 10:39:48AM +0200, Marc Haber wrote: > > Currently, I cannot explain how this has happened, I must have flagged > > an actually good kernel as bad from my understanding of git bisect. > > > > Can you give advice how to continue here? > > Yap, sounds like you marked a bisection step incorrectly, which lead > into the wrong direction. How reliable is your reproducer? Usually, the crash or filesystem corruption happens in the first 15 to 30 minutes. I have had one instance running three hours before corrupting, I have therefore upped the run time to nine hours before saying "this kernel is good". What bothers me is that since I ended up with a "suspect" commit that actually results in a "good" kernel (running for 22 hours now), I must have said "bad" to an actually "good" kernel, which means that I had an unrelated crash or corruption. Is that reasoning correct? > Also, do the bisection as Paolo suggested: > > * try 45bdbcfdf241. That one qualified as "good" six days ago. I'll retry, maybe I just didn't wait long enough. "Trying" means make oldconfig, make deb-pkg in my case right? Does it matter what I answer to the numerous config questions that keep coming up during the oldconfig step? > * then do > > $ git bisect start v4.5-rc1 v4.4 > > which marks -rc1 as bad and 4.4 as good. Would it help to explicitly mark 0e749e54244eec87b2a3cd0a4314e60bc6781115 as good so that the knowledge gained during the last week is not completely lost? > While you're doing that bisect, do what Paolo said by applying the diff > here > > https://lkml.kernel.org/r/570EADD2.8030300@xxxxxxxxxx > > when the bisection point you're at at each step contains > > 46896c73c1a4 ("KVM: svm: add support for RDTSCP") > > You should apply the above hunk by doing > > $ patch -p1 --dry-run -i /tmp/hunk > > If it applies fine, you then apply it > > $ patch -p1 -i /tmp/hunk > > All clear? So I need to git log | grep 46896c73c1a4 and apply the patch again each time the commit is found? 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
