Re: Kernel lock error: _kernel_lock: spinout

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Sat, Aug 10, 2013 at 06:26:04PM +0100, Patrick Welche wrote:
> I added a pair of disks from a demised NetBSD/amd64 to another
> -current/amd64 box. This means that the box has 2 sets of autoconfiguring
> raid 1 root sets, one of which is duff.
> 
> I can't get to a position where I can dd zero all over the offending disks
> as:
> 
> > boot -vsa
> ...
> Found: wd3g at 1
> raid9: allocating 20 buffers of 65536 bytes.
> raid9: RAID Level 1
> raid9: Components: component0[**FAILED**] /dev/wd3g
> raid9: Total Sectors: 1173382400 (572940 MB)
> boot device: <unknown>
> root device: Kernel lock error: _kernel_lock: spinout
> 
> lock address : 0xffffffff80ca9780 type     :               spin
> initialized  : 0xffffffff8040513e
> shared holds :                  0 exclusive:                  1
> shares wanted:                  0 exclusive:                  2
> current cpu  :                  0 last held:                  3
> current lwp  : 0xfffffe821f53d860 last held: 0xffffffff80c928a0
> last locked* : 0xffffffff80497e2c unlocked : 0xffffffff8040c296
> curcpu holds :                  0 wanted by: 0xfffffe821f53d860
> 
> panic: LOCKDEBUG
> rebooting...

The clue was in kern/38241: workaround is "boot -1".

Cheers,

Patrick