Re: mutex still spinning while in DDB on UP machine

On Thu, 2005-06-09 at 14:38, Kris Kennaway wrote:
> I've seen the following a couple of times recently on UP machines
> running up-to-date current (the panic may not be important, I'm
> referring to the behaviour of DDB):
> 
> Fatal trap 12: page fault while in kernel mode
> fault virtual address   = 0x0
> fault code              = supervisor write, page not present
> instruction pointer     = 0x20:0xc054cc77
> stack pointer           = 0x28:0xd4222c9c
> frame pointer           = 0x28:0xd4222cb4
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                         = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 37 (vnlru)
> [thread pid 37 tid 100035 ]
> Stopped at      vnlru_free+0x87:        movl    %eax,0(%edx)
> db> stray irq7
> stray irq7
> stray irq7
> stray irq7
> too many stray irq 7's: not logging anymore
> 
> At this point, the keyboard only works sporadically (i.e. I have to
> press keys multiple times for DDB to receive the input).

I will try to fix it.
We should really not have interrupts enabled at this point.

Stephan