* Strange behaviour after uptime of 208-209 days
@ 2012-05-06 23:33 Christoph Bartoschek
2012-05-07 4:22 ` Mike Galbraith
0 siblings, 1 reply; 2+ messages in thread
From: Christoph Bartoschek @ 2012-05-06 23:33 UTC (permalink / raw)
To: linux-kernel
Hi,
we run kernel 2.6.37.6 from opensuse 11.4. All machines with uptimes more
than 208 days show strange behaviour. The scheduler seems to avoid some
cores. For example on a 12 core machine only 3 cores are used. I see the
following messages in the logfiles
May 6 04:16:50 r1106i14 kernel: [18446743865.627390] BUG: soft lockup -
CPU#1 stuck for 4278190091s! [bonnRoute:12613]
May 6 04:16:51 r1106i14 kernel: [18446743866.001912] BUG: soft lockup -
CPU#6 stuck for 4278190091s! [bonnRoute:25309]
May 6 04:16:51 r1106i14 kernel: [18446743866.676048] BUG: soft lockup -
CPU#15 stuck for 4278190091s! [bonnRoute:28259]
May 6 04:16:43 r1106i11 kernel: [18446743821.077585] BUG: soft lockup -
CPU#2 stuck for 4278190091s! [chipbench:14254]
May 6 04:16:43 r1106i11 kernel: [18446743821.152489] BUG: soft lockup -
CPU#3 stuck for 4278190091s! [chipbench:14246]
May 6 04:16:43 r1106i11 kernel: [18446743821.227393] BUG: soft lockup -
CPU#4 stuck for 4278190091s! [chipbench:14220]
May 6 04:16:44 r1106i11 kernel: [18446743821.302297] BUG: soft lockup -
CPU#5 stuck for 4278190091s! [chipbench:14271]
May 6 04:16:44 r1106i11 kernel: [18446743821.452108] BUG: soft lockup -
CPU#7 stuck for 4278190092s! [chipbench:14190]
May 6 04:16:44 r1106i11 kernel: [18446743821.527011] BUG: soft lockup -
CPU#8 stuck for 4278190092s! [chipbench:14173]
May 6 04:16:44 r1106i11 kernel: [18446743821.601915] BUG: soft lockup -
CPU#9 stuck for 4278190091s! [chipbench:14162]
May 6 04:16:44 r1106i11 kernel: [18446743821.676820] BUG: soft lockup -
CPU#10 stuck for 4278190091s! [chipbench:14296]
May 6 04:16:44 r1106i11 kernel: [18446743821.751724] BUG: soft lockup -
CPU#11 stuck for 4278190091s! [chipbench:14203]
The representation of the kernel time stamp is near to 2^64. Is there an
integer overflow involved?
Could you please tell me which kernel version fixed this bug?
Thanks
Christoph
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Strange behaviour after uptime of 208-209 days
2012-05-06 23:33 Strange behaviour after uptime of 208-209 days Christoph Bartoschek
@ 2012-05-07 4:22 ` Mike Galbraith
0 siblings, 0 replies; 2+ messages in thread
From: Mike Galbraith @ 2012-05-07 4:22 UTC (permalink / raw)
To: Christoph Bartoschek; +Cc: linux-kernel
On Mon, 2012-05-07 at 01:33 +0200, Christoph Bartoschek wrote:
> Hi,
>
> we run kernel 2.6.37.6 from opensuse 11.4. All machines with uptimes more
> than 208 days show strange behaviour. The scheduler seems to avoid some
> cores. For example on a 12 core machine only 3 cores are used. I see the
> following messages in the logfiles
Ah, 208 day bugfixes went to stable, but not to 2.6.37. Dunno if that
kernel is still being maintained, but please file a bug with opensuse.
-Mike
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