lkml.org 
[lkml]   [2015]   [Feb]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: smp_call_function_single lockups
From
On Thu, Feb 19, 2015 at 2:14 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:

>
> Hmm. Still just the stack trace for the CPU that is blocked (CPU0), if
> you can get the core-file to work and figure out where the other CPU
> is, that would be good.
>

This is v3.19 + your patch (smp acquire/release)
- (nested kvm with 2 vcpus on top of proliant with x2apic cluster mode
and acpi_idle)

* http://people.canonical.com/~inaddy/lp1413540/STACK_TRACE.txt
http://people.canonical.com/~inaddy/lp1413540/BACKTRACES.txt
http://people.canonical.com/~inaddy/lp1413540/FOREACH_BT.txt

* It looks like we got locked because of reentrant flush_tlb_* through
smp_call_*
but I'll leave it to you. let me know if you need any more info..

-
Rafael Tinoco


\
 
 \ /
  Last update: 2015-02-23 15:21    [W:0.203 / U:0.460 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site