segfault error on x86_64

segfault error on x86_64

[bvds]

I have kernel 2.4.22 compiled with gcc 3.3 running on a 
dual AMD Opteron (in 64 bit mode).  
There is an error message that occurs about twice a day at random times:

Sep 30 23:45:00 gideon kernel: bumps[12960]: segfault at 0000002a95611000 rip 0000000000402150 rsp 0000007fbffff1a8 error 6
Oct  1 10:26:57 gideon kernel: bumps[13510]: segfault at 0000002a95611000 rip 0000000000402150 rsp 0000007fbffff1a8 error 6

As far as I can tell, there is no other effect than this message.
(the system keeps running OK).

What is "bumps" ?

BvdS

Re: segfault error on x86_64

[Andi Kleen]

<bvds@bvds.geneva.edu> writes:

> I have kernel 2.4.22 compiled with gcc 3.3 running on a 
> dual AMD Opteron (in 64 bit mode).  
> There is an error message that occurs about twice a day at random times:
> 
> Sep 30 23:45:00 gideon kernel: bumps[12960]: segfault at 0000002a95611000 rip 0000000000402150 rsp 0000007fbffff1a8 error 6
> Oct  1 10:26:57 gideon kernel: bumps[13510]: segfault at 0000002a95611000 rip 0000000000402150 rsp 0000007fbffff1a8 error 6
> 
> As far as I can tell, there is no other effect than this message.
> (the system keeps running OK).
> 
> What is "bumps" ?

Some random program on your system. The x86-64 kernel logs all unhandled
segfaults by default. It is unlikely to be a kernel problem.

-Andi

Re: segfault error on x86_64

[Mitchell Blank Jr]

Andi Kleen wrote:
> > What is "bumps" ?
> 
> Some random program on your system.

Specifically, it's one of the graphics demos that comes with xscreensaver.
If the segfault is reproducible on that arch you might want to report it
to jwz:
  http://www.jwz.org/xscreensaver/

-Mitch

Re: segfault error on x86_64

[bvds]

>> Sep 30 23:45:00 gideon kernel: bumps[12960]: segfault at 0000002a95611000 rip 0000000000402150 rsp 0000007fbffff1a8 error 6
>
>Some random program on your system. The x86-64 kernel logs all unhandled
>segfaults by default. It is unlikely to be a kernel problem.
>
>-Andi

So it doesn't have to be a kernel module of some kind?  
I have lm_sensors and comedi (data acquisition stuff) running,
which have modules inserted into the kernel.

BvdS

Re: segfault error on x86_64

[insecure]

On Friday 03 October 2003 11:20, Andi Kleen wrote:
> <bvds@bvds.geneva.edu> writes:
> > I have kernel 2.4.22 compiled with gcc 3.3 running on a
> > dual AMD Opteron (in 64 bit mode).
> > There is an error message that occurs about twice a day at random times:
> >
> > Sep 30 23:45:00 gideon kernel: bumps[12960]: segfault at 0000002a95611000
> > rip 0000000000402150 rsp 0000007fbffff1a8 error 6 Oct  1 10:26:57 gideon
> > kernel: bumps[13510]: segfault at 0000002a95611000 rip 0000000000402150
> > rsp 0000007fbffff1a8 error 6
> >
> > As far as I can tell, there is no other effect than this message.
> > (the system keeps running OK).
> >
> > What is "bumps" ?
>
> Some random program on your system. The x86-64 kernel logs all unhandled
> segfaults by default. It is unlikely to be a kernel problem.

Whoa. Do you mean it can be told to not do this?
This is very good, because it can now be generalized to all arches
without people objecting 'its legitimate to use unhandled SEGVs,
I do not want this logged' - they can turn it off in /proc.

Of course some folks will object anyway ;););)
-- 
vda