Red Hat Bugzilla – Bug 466376
kernel-2.6.27-0.398.rc9.fc10 gets NULL pointer dereference in __list_add+0x16/0x87
Last modified: 2008-10-27 17:43:50 EDT
Created attachment 319954 [details]
dmesg terminating with oops and a number of traces
Description of problem:
This is what I see in dmesg:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
IP: [<ffffffff81181fa7>] __list_add+0x16/0x87
PGD 1a195067 PUD 1a196067 PMD 1a13b067 PTE 0
Oops: 0000  SMP
Full dmesg output attached. No idea what "Tainted" means
in this case. There are no external modules of any sort loaded
or present on the machine.
I have seen "Disabling IRQ #16" displayed all over the place
on other occasssions.
Version-Release number of selected component (if applicable):
I can actually dig out from logs other "NULL pointer dereference"
messages. They go back to 2.6.27-0.211.rc1.git3.fc10 and
through 2.6.27-0.226.rc1.git5.fc10. They all seem to be related
to X but earlier ones point to drm_ati_pcigart_init+0x1be/0x210
That particular one seems to be something new after an update to 2.6.27-0.398.rc9.fc10
Created attachment 319963 [details]
additonal oopses and traces
After running that kernel a bit longer I got also what is attached
here; after "Disabling IRQ #16" line. So, yes, this seems to be
(In reply to comment #2)
> Full dmesg output attached. No idea what "Tainted" means
> in this case. There are no external modules of any sort loaded
> or present on the machine.
G - all loaded modules are GPL
M - there was an earlier machine check exception
D - there was a previous oops
Got the same error with 2.6.27-0.408.rc9.git1.fc10.x86_64
too. Sometime after that a machine just died. Hard
to tell if this was related as I got no information from
that last incident.
Has this improved at all in recent rawhide?
> Has this improved at all in recent rawhide?
Indeed it did improve. I do not see anymore this or "Disabling IRQ" messages. That was showing up in a seemingly random manner but I would think that it would still show up from time to time if still present.