Messages in this thread | | | Date | Fri, 22 Aug 2008 17:57:41 -0300 | From | "Luiz Fernando N. Capitulino" <> | Subject | Re: 2.6.{26.2,27-rc} oops on virtualbox |
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Em Fri, 22 Aug 2008 14:20:54 -0300 "Luiz Fernando N. Capitulino" <lcapitulino@mandriva.com.br> escreveu:
| Em Fri, 22 Aug 2008 12:35:20 -0400 | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> escreveu: | | | * Luiz Fernando N. Capitulino (lcapitulino@mandriva.com.br) wrote: | | > Em Fri, 22 Aug 2008 11:34:52 -0400 | | > Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> escreveu: | | > | | > | * Luiz Fernando N. Capitulino (lcapitulino@mandriva.com.br) wrote: | | > | > Em Fri, 22 Aug 2008 08:50:12 +0200 | | > | > Ingo Molnar <mingo@elte.hu> escreveu: | | > | > | | > | > | | | > | > | * H. Peter Anvin <hpa@zytor.com> wrote: | | > | > | | | > | > | > H. Peter Anvin wrote: | | > | > | >>> | | > | > | >>> Does this look like a kernel bug? | | > | > | >>> | | > | > | >> | | > | > | >> No, it looks like a very common virtualizer bug. Does the attached | | > | > | >> patch work for you? | | > | > | >> | | > | > | > | | > | > | > Also, in addition to this, please try tip:master. There is a patch in | | > | > | > tip:master which I hope should fix this problem, but the details are | | > | > | > important. | | > | > | | | > | > | access coordinates would be at: | | > | > | | | > | > | http://people.redhat.com/mingo/tip.git/README | | > | > | | > | > As I already have Linus tree downloaded I have cloned it in | | > | > the usual way. | | > | > | | > | > Got the same results: OOPS in virtualbox but it works on QEMU. | | > | > | | > | > The OOPS's output follows and I have attached the .config I'm using | | > | > to reproduce the problem. | | > | > | | > | | | > | Can you try booting with the kernel argument : | | > | debug_alternative | | > | | | > | The dmesg of the kernel bootup up to the oops would be helpful. | | > | | | > | My guess is that there may be something wrong with irq disabling which | | > | protects text_poke_early in apply_alternatives(). | | > | | > I have attached two files: | | > | | > - normal.txt: normal boot with no debug options | | > - debug-alternative.txt ignore_loglevel and debug-alternative boot | | > options | | > | | > I had to pass ignore_loglevel otherwise it wouldn't print | | > anything. | | > | | | | Ok, now can you try booting with either of those args : | | | | noreplace-paravirt | | noreplace-smp | | | | And see which one(s) works ? | | noreplace-paravirt works, the other one causes no change.
I have asked Mandriva and Ubuntu users to test this and all of them so far are saying that noreplace-paravirt works.
It makes the system slower, but it works.
-- Luiz Fernando N. Capitulino
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