Re: there is a bug in twe driver or disk subsystem for sure

it would help if you gave a full stacktrace.

Artem Koutchine (matrix_at_itlegion.ru) wrote:
> I am running 5.2-CURRENT. The box has 3w 8506-4LP
> SATA raid controller and freebsd is install onto raid5 array.
> 
> Almost everytime i pull a hotswap disk (one out of four)
> or when very heavy disk activity (like background fsck after
> crashing on a 310GB label) i get the following after 10 or
> so minutes of uptime:
> 
> Memory modified after free 0x788f400(508) val=20202020 _at_ 0xe788f400
> panic: Most recently used by devbuf
> at line 128 in file /usr/src/sys/udm_dbg.c
> cpu=0;
> Debugger ("panic")
> Stopped at Debugger +0.46: xchgl %ebx, in_Debugger.0
> 
> and i typed 'c' in debugger:
> 
> the system started to shutdown and here is what i saw:
> 
> twe0: failed to delete unit 0
> stray irq9
> 
> 
> The box is:
> permicro X5DPE-G2 motherboard
> DUAL XEON 2.66Ghz (HT enabled) 533Mhz bus
> 2GB RAM
> 4 SATA SEAGTE 120GB DRIVES
> 3WARE 8506-4LP SATA RAID5 CONTROLLER
> 
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-- 
-ps