[Bug 8307] New: Unstable system (Oopses?) since 2.6.10

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Mon Mar 28 16:24:09 UTC 2005

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           Summary: Unstable system (Oopses?) since 2.6.10
           Product: Ubuntu
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P3
         Component: linux
        AssignedTo: fabbione at ubuntu.com
        ReportedBy: milouny at gmx.net
         QAContact: kernel-bugs at lists.ubuntu.com

When running hoary with kernel, I had no problems on my
girlfriends computer. After upgrading her system to hoary with 2.6.10, weird
crashes started to occur. On my own computer I had no problems. I will describe
the situation in some detail, although I'm aware a lot of thinks are vague. Feel
free to request more info or ask me to run some tests, but please note it's not
my own computer so things will take some time for me to answer. 

First problems started weeks ago after upgrading warty to hoary with
2.6.10-3-386. Upgrading to 2.6.10-4 and -5 did not help. Symptoms were crashing
programs like gnome hanging on startup, hanging on logout, and even dpkg
crashing. /var/log/kern.log showed "Unable to handle kernel NULL pointer
dereference at virtual address 00000000", see
http://atlas.et.tudelft.nl/1200348/pub/bugs/kern.log-old . (This log is from the
last week, but the message was similar that time). Booting kernel from
warty resolved these problems, and made the system more stable. 

I did not know what to do, and reinstalled warty. I again upgraded to hoary, and
the same problems arose (Surprise!). Still was the answer. Now I should
note I saw in kern.log that the system ran out of memory, and thus killed
programs like f-spot - I did not properly set up a swap partition with this
install, my fault. But kern.log showed both NULL pointer exceptions and Oopses
(which I'll show later). 

Yesterday I decided to install hoary-pre-release from cd. No fun. Dpkg started
crashing (I'm sorry I don't have the exact error message now, but I believe it
said it was killed). At a point, dpkg wouldn't work at all, as it only exited
with "dpkg: ../../main/packages.c:191: process_queue: Assertion `dependtry <= 4'
failed.", which I fixed a livecd and ``dpkg -i
/var/cache/apt/archives/dpkg_1.10.27ubuntu1_i386.deb''. Kernel problems
persisted, however. Please see
http://atlas.et.tudelft.nl/1200348/pub/bugs/kern.log and
http://atlas.et.tudelft.nl/1200348/pub/bugs/kern.log.0 , which I just uploaded
from my current installation. No NULL pointer references here (I'm afraid those
will come...), but some Oopses. 

Maybe it's flaky hardware here... I must point out I ran memtest86 (Not
memtest86+, let me know if that matters) for 4 passes without errors (then I
interrupted it as I didn't know when it'd stop). Does this mean we can assume
this is not due to faulty memory?

- kernel works fine. 
- 2.6.10 does not work on my girlfriends pc, and results in memory-related
- memtest86 ran for four passes without errors. 
- I would happily give logfiles and run tests if this is really a
kernel-problem, so please let me know. 

Thank you for your time.

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