panic: double fault with 11.0-CURRENT r258504

[Konstantin Belousov]

On Wed, Nov 27, 2013 at 10:33:30AM -0800, Don Lewis wrote:
> On 27 Nov, Konstantin Belousov wrote:
> > On Wed, Nov 27, 2013 at 09:41:36AM -0800, Don Lewis wrote:
> >> On 27 Nov, Konstantin Belousov wrote:
> >> > On Wed, Nov 27, 2013 at 02:49:12AM -0800, Don Lewis wrote:
> >> >> <http://people.freebsd.org/~truckman/doublefault2.JPG>
> >> > 
> >> > What is the instruction at cpu_switch+0x9b ?
> >> 
> >> movl 0x8(%edx),%eax
> > So it is line 176 in swtch.s. Is machine still in ddb, or did you
> > obtained the core ? If yes, please print out the content of words at
> > 0xe4f62bb0 + 4, +8 (*), +16. Please print the content of the word at
> > address (*) + 8.
> 
> It is still in ddb.
> 
> <http://people.freebsd.org/~truckman/doublefault3.JPG>, though not in
> the above order.
Uhm, sorry, I mistyped the last part of the instructions.

The new thread pointer is 0xd2f4e000, there is nothing incriminating.
Please print the word at 0xd2f4e000+0x254 == 0xd2f4e254, which would be
the address of the new thread pcb. It is load from the pcb + 8 which
faults.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 834 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-current/attachments/20131127/39546803/attachment.sig>