RE: Panic and page fault in loop during handling NMI backtracehandler

[Liu, Chuansheng]

Hello Steven,

> -----Original Message-----
> From: Steven Rostedt [mailto:rostedt@xxxxxxxxxxx]
> Sent: Wednesday, October 16, 2013 10:08 AM
> To: Liu, Chuansheng
> Cc: Ingo Molnar (mingo@xxxxxxxxxx); hpa@xxxxxxxxx; fweisbec@xxxxxxxxx;
> akpm@xxxxxxxxxxxxxxxxxxxx; paulmck@xxxxxxxxxxxxxxxxxx; Peter Zijlstra
> (peterz@xxxxxxxxxxxxx); x86@xxxxxxxxxx; 'linux-kernel@xxxxxxxxxxxxxxx'
> (linux-kernel@xxxxxxxxxxxxxxx); Wang, Xiaoming; Li, Zhuangzhi
> Subject: Re: Panic and page fault in loop during handling NMI backtrace handler
> 
> On Wed, 16 Oct 2013 01:54:51 +0000
> "Liu, Chuansheng" <chuansheng.liu@xxxxxxxxx> wrote:
> 
> 
> > > Since the NMI iretq nesting has been fixed, there's no reason that
> > I think you patch fix the infinite loop, we will have a test soon.
> > BTW, we are using 3.10, could you help to point out which NMI iretq nesting
> patch?
> 
> There were many. You can read about what was done here:
> 
>  https://lwn.net/Articles/484932/
> 
> The original is here:
> 
> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd49c
> 2391773ffbf52bb80d75c4a92b16972517
> 
> But more were added.
> 
> But that is back in 3.3, so 3.10 has all the required updates.
Thanks your info, is trying your patch now.

> 
> -- Steve
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