Re: applications running in KVM crashing?

[Nikola Ciprich <extmaillist@linuxbox.cz>]

Sure!
good timing, we have service window today, so I can give it a try 
almost immediately.
problem needs weeks to reproduce, so I'll report if I got it again.
Since Gleb too states patch should fix it, I guess we can consider
it closed for now...
Thanks a lot to both of You!
regards
nik

On Wed, Jul 14, 2010 at 05:00:39PM +0300, Avi Kivity wrote:
> On 07/14/2010 04:41 PM, Nikola Ciprich wrote:
> >>disassembly around the failure please.
> >hmm, is this what You want?
> >
> >(gdb) disas 0x00007f6391472273
> >0x00007f6391472273<pthread_rwlock_rdlock+99>:  lock decl (%rdi)
> 
> By coincidence, a patch was sent yesterday fixing lock decl.  Can
> you try it out?
> 
> commit cb7eaecb3389c7fa2490ea1bee8f10cfa5df30d4
> Author: Gleb Natapov <gleb@redhat.com>
> Date:   Tue Jul 13 16:40:23 2010 +0300
> 
>     KVM: x86: emulator: inc/dec can have lock prefix
> 
>     Mark inc (0xfe/0 0xff/0) and dec (0xfe/1 0xff/1) as lock prefix
> capable.
> 
>     Signed-off-by: Gleb Natapov <gleb@redhat.com>
>     Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
> 
> Although userspace code shouldn't invoke the emulator in most situations.
> 
> -- 
> I have a truly marvellous patch that fixes the bug which this
> signature is too narrow to contain.
> 

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