Panic on -CURRENT after LDT changes
attilio at FreeBSD.org
Thu May 24 10:35:53 UTC 2007
Jeff Roberson wrote:
> Thanks, Attilio and I will look at this right away.
> On Wed, 23 May 2007, Joe Marcus Clarke wrote:
>> On a -CURRENT build today with Jeff's LDT locking changes, I get an
>> instant, reproducible panic by doing:
>> # cd /usr/src
>> # make -DNO_CLEAN buildworld
>> Backing out the LDT changes to /sys/i386/i386/*machdep* corrects the
>> problem. Here is a dmesg and backtrace. In frame 6, it appears mdp is
>> NULL (i.e. td->td_proc->p_md = 0x0).
Did you enable WITNESS/INVARIANTS/INVARIANT_SUPPORT?
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