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Old 04-02-2008, 01:55 AM
Peter McNeil
 
Default 2.6.24.x kernel crash when swap used

I've managed to get a bit more information re the kernel 2.6.24.x
crashes I have when physical mem is used up.. but first to recap:-


I have an acer 5620 core 2 duo running the x86_64 version of fedora 8
with 2GB Ram and 2GB swap. It works fine with kernel 2.6.23.15-137.fc8,
but when I try any of the 2.6.24.xx-xx.fc8 kernels the machine crashes
when pyhsical ram fills up. Swap is not used.


* I have checked swap space with badblocks, and all reports fine
* Swap is on

...$ cat /proc/swaps
Filename Type Size Used
Priority

/dev/mapper/VolGroup00-LogVol01 partition 2031608 0 -1

...$ cat /proc/sys/vm/swappiness
60

at the point it crashes top (via ssh) looks like this:-

top - 14:13:36 up 29 min, 4 users, load average: 1.32, 0.56, 0.38
Tasks: 162 total, 1 running, 161 sleeping, 0 stopped, 0 zombie
Cpu(s): 18.2%us, 6.0%sy, 0.0%ni, 43.0%id, 32.1%wa, 0.0%hi, 0.7%si,
0.0%st

Mem: 2061304k total, 2042936k used, 18368k free, 44764k buffers
Swap: 2031608k total, 0k used, 2031608k free, 679356k cached

if I run stress from the command line I do get a stack dump I have only
been able to capture a bit of that by copying it by hand:-


(*new info)
---- quote ----
CR2 ffffffff00000001

BUG sleeping function called from invalid context at kernel/rwsem.c:21
in_atomic():0, irqs_disabled():1
Pid 3920, comm: stress Tainted: P D 2.6.24.3-50.fc8 #1

Call Trace:
[<ffffffff81268b17>] down_read +0x15/0x23
[<ffffffff8105e091>] acct_collect +0x42/0x18e
[<ffffffff8103a632>] do_exit + 0x217/0x76b
[<ffffffff8126b666>] do_page_fault +0x5c3/0x691
...
---- end quote ----

Any Ideas what might be happening? Surely it can't just be my machine???

Cheers,
Peter.

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