Re: 7.0 CURRENT kernel's ath driver causes page fault, kernel panic (debugging kernel)
- From: "Garrett Cooper" <yanefbsd@xxxxxxxxx>
- Date: Fri, 18 Jul 2008 03:36:16 -0700
On Thu, Jul 17, 2008 at 9:00 PM, Edward Ruggeri <smallhand@xxxxxxxxxxxx> wrote:
Hi,
I am getting a kernel panic (page fault) caused by the FreeBSD
kernel's ath driver shortly after I begin using the internet. I use
FreeBSD 7.0 CURRENT. I used cvs a few days ago to update the source
tree (7/10/08) and rebuilt the world as well as the kernel (just got a
brand new computer). There is very little software installed (ports
only, also built 7/10/08), and no data. But let me describe the
configuration and problem.
I have recently purchased a Lenovo ThinkPad, with a ThinkPad 11a/b/g
Wi-Fi wireless LAN Mini-PCIe card (Lenovo part #41W1685). My Lenovo
representative claims this uses a Atheros Ar5006ex chipset (she's not
an expert, though), but FreeBSD's dmesg detects an Atheros 5212
chipset. The Linux oriented thinkwiki.org claims this card may use
either chipset. I don't know who to trust; maybe someone knows the
answer, but Google hasn't seemed to clear things up. In particular,
from dmesg:
Some notes:
1. *blinks*... I hope you mean 8-CURRENT, not 7-CURRENT. 7 hasn't been
CURRENT for some months now (~6 months IIRC).
2. pciconf -lv might help with the PCI ID info. Then someone might be
able to tie your card back to the appropriate chipset.
3. KDB, DDB, WITNESS and INVARIANTS support compiled into the kernel
would be extremely helpful, if not required to debug your issue.
As for the actual debug process, there's a spot in the dev handbook
about it (http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug.html),
but when I tried debugging my issue with NTFS and SMB I didn't really
find it helpful to be honest...
You may also have to compile without SMP and with the 4BSD scheduler
just to see whether or not it's an issue reproducible with the ULE
scheduler, the driver, or something else...
Hopefully this gets you started on the right path...
-Garrett
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