On 09/11/2012 04:41 PM, Fengguang Wu wrote:
On Mon, Sep 10, 2012 at 10:06:33AM -0700, John Stultz wrote:
On 09/09/2012 12:59 AM, Fengguang Wu wrote:
Hi John,
The below lockup warning pops up very occasionally in kvm guest
kernels and it's bisected down to
commit 2a8c0883c3cfffcc148ea606e2a4e7453cd75e73
Author: John Stultz <[email protected]>
Date: Fri Jul 13 01:21:56 2012 -0400
time: Move xtime_nsec adjustment underflow handling
timekeeping_adjust
[ 8.340327] Freeing unused kernel memory: 460k freed
[ 1107.515496] [sched_delayed] sched: RT throttling activated
[ 1107.516439] BUG: soft lockup - CPU#1 stuck for 1024s! [swapper/1:0]
Thanks so much for sending this. One detail I'm curious about is
that these kernels from the Bug messages seem to be v3.6-rc1 or
earlier.
Ingo had a fix 1d17d17484d40f2d5b35c79518597a2b25296996 ("time: Fix
adjustment cleanup bug in timekeeping_adjust") that landed in
3.6-rc2
Has this issue actually been seen on a 3.6-rc2+ kernel?
Nope. I tested -rc5 for 10000+ boots and it's obviously free from the bug.
Sorry for the noise!
No worries. Thanks so much for following up on this, and your continued
testing!
-john
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
