[OpenAFS] 1.4.4 client on EL3: panic in afs_HashOutDcache

[Derrick J Brashear]

On Wed, 18 Apr 2007, Stephan Wiesand wrote:

> PID: 1002   TASK: f49f2000  CPU: 2   COMMAND: "afs_cachetrim"
> #0 [f49f3cc8] netconsole_netdump at f8a1d793
> #1 [f49f3cdc] try_crashdump at c0129033
> #2 [f49f3cec] die at c010c6f2
> #3 [f49f3d00] do_page_fault at c0120389
> #4 [f49f3dc4] error_code (via page_fault) at c02b01c0
>    EAX: 00000009  EBX: f8b5a000  ECX: 00000046  EDX: c0388e98  EBP: 00000002
>    DS:  0068      ESI: f8c2dfa0  ES:  0068      EDI: 0005867a
>    CS:  0060      EIP: f8a6da50  ERR: ffffffff  EFLAGS: 00010282
> #5 [f49f3e00] osi_Panic at f8a6da50
> #6 [f49f3e20] afs_HashOutDCache at f8a2d9ea
> #7 [f49f3e40] afs_GetDownD at f8a2d6a3
> #8 [f49f3fa0] afs_CacheTruncateDaemon at f8a2cd29
> #9 [f49f3fe0] afsd_thread at f8a7f9eb
> #10 [f49f3ff0] kernel_thread_helper at c01095cb
> crash>
>
> Alas, I'm afraid this is the point where I'll need either some guidance or a 
> lot of reading and experimenting to get any further.

in the afs_HashOutDCache frame, knowing the contents of adc, us, and i 
would be a start.


> When I tried to restart the client, I experienced what I've seen frequently 
> with 1.4.x clients on this platform: "kernel BUG at slab.c:892:" when 
> re-inserting the openafs module. This seems to happen quite consistently when 
> restarting the client after it has run for some time (say, a week).

Was the module actually unloaded from the previous attempt?