Re: oops in kernel ( 3.4.x -> 3.5rc )
From: nicolas prochazka
Date: Fri Jul 20 2012 - 16:52:34 EST
the problem is occured with :
- linux kernel 3.4.5 i do not test with 3.4.0 / 1 / 2 / 3 / 4 ,
but i can if you want
- linux kernel 3.5rc6 rc7 / do not test with other rc.
the problem is not occured with :
linux kernel 3.3.4 / 3.3.8
These servers are used for :
- starting a lot of virtual machine with qemu-kvm ( ~ 40 ) ( lot of
select i think)
- do a lot of network tests with openvswitch
I can test a kernel 3.4.x before and after a commit id (?) to find a regression.
2012/7/20 Thadeu Lima de Souza Cascardo <cascardo@xxxxxxxxxxxxxxxxxx>:
> On Fri, Jul 20, 2012 at 09:21:53AM -0400, Dave Jones wrote:
>> On Fri, Jul 20, 2012 at 11:56:06AM +0200, nicolas prochazka wrote:
>> > [ 2384.900061] BUG: unable to handle kernel paging request at 000000010000002f
>> That '1' looks like a random bit flip. Try running memtest86.
> Looks more a 32-bit value of 1 followed by a 32-bit value of 0x2f. Most
> likely a pointer to some other piece of a struct. However, taking a look
> at fs/files.c code, nothing seems suspicious.
> Nicolas, it wasn't clear to me if you had problems with 3.4 too. There
> has been some changes in fs/files.c on 3.4-rc1 in the piece of code
> where you hit the problem.
> What does your system exercise? Any chance you are using a lot of
> select, which has also been changed in those same patches to fs/files.c?
>> > [ 2384.910010] Pid: 23838, comm: queue.sh Tainted: G D W
>> This wasn't the first problem either.
>> > [ 2397.885344] BUG: unable to handle kernel paging request at 000000010000003b
>> Looks like the same flipped bit.
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