On Wed, 18 Jan 2006, Greg KH wrote:
On Thu, Jan 19, 2006 at 01:14:56AM +0100, Grzegorz Kulewski wrote:
Hi,
I managed to get something like this:
kernel BUG at mm/shmem.c:836!
Jan 17 23:31:42 kangur [4312977.009000] CPU: 0
Jan 17 23:31:42 kangur [4312977.009000] EIP: 0060:[<b014a429>]
Tainted: P VLI
Can you duplicate this on a 2.6.15 or newer kernel, without a closed
source driver loaded?
1. Well, as I said in my message I am not able to reproduce this on demand
at all. It is the first time it ever happened to me in two months. If
somebody is interested I can try very hardly to reproduce it but I would
not expect success.
2. As to the tainted kernel. Well, I know it is tainted (by something
like madwifi or nvidia loaded by coldplug and not even used from bootup).
So this is very unlikely that this is the cause. But of course I can not
guarantee that. But because of #1 - I am not able to reproduce it with
untainted kernel - I sent it to this list. Maybe it will make some bells
ring in some smart head, especially if that head knows how those functions
and data structures are supposed to work. If no - well - what could I do
more?
I don't have infrastructure for making 24/7 stress tests of tmpfs (or
anything other). But maybe if somebody has some spare machines he could
try doing it because I am seeing different oopses/crashes/bugs in tmpfs on
different kernel (on x86 and x86-64) from time to time. They are _very_
hard to reproduce and are probably also fixed from time to time (maybe by
other not related changes not because somebody spoted bug in real life).
Something like making whole system compiles and upgrades in a loop till
error happens will proably be enough to catch most such errors after some
time and doing it continously could prevent any regressions in newer
kernels. All I could do is to try compiling that gcc 3 to 5 times a day
with all proprietary modules not loaded (and that means real pain on
desktop system btw).
Thanks,
Grzegorz Kulewski
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