On Saturday, December 07, 2013 2:32:56 pm Poul-Henning Kamp wrote:
> 
> I updated my "canary" machine to -current today and it's not a happy
> camper.  Trying to run a buildworld on it I get the follwing reproducible
> panic:
> 
> FreeBSD/amd64 (ni.freebsd.dk) (cuau0)
> 
> login: lock order reversal:
>  1st 0xfffff8011641a9a0 ufs (ufs) @ /freebsd/head/sys/kern/vfs_lookup.c:518
>  2nd 0xfffffe00e7858790 bufwait (bufwait) @ 
> /freebsd/head/sys/ufs/ffs/ffs_vnops
> .c:262
>  3rd 0xfffff800b40ad5f0 ufs (ufs) @ /freebsd/head/sys/kern/vfs_subr.c:2101
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0111361da0
> kdb_backtrace() at kdb_backtrace+0x39/frampanic: bad stray interrupt
> cpuid = 2
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe011120e9e0
> kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe011120ea90
> vpanic() at vpanic+0x126/frame 0xfffffe011120ead0
> kassert_panic() at kassert_panic+0x136/frame 0xfffffe011120eb40
> intr_event_handle() at intr_event_handle+0x11d/frame 0xfffffe011120eb90
> intr_execute_handlers() at intr_execute_handlers+0x48/frame 0xfffffe011120ebc0
> lapic_handle_intr() at lapic_handle_intr+0x73/frame 0xfffffe011120ebf0
> Xapic_isr1() at Xapic_isr1+0xa4/frame 0xfffffe011120ebf0
> --- interrupt, rip = 0x11f7b11, rsp = 0x7fffffff8b50, rbp = 0x7fffffff8b80 ---
> KDB: enter: panic
> [ thread pid 72149 tid 100102 ]
> Stopped at      kdb_enter+0x3e: movq    $0,kdb_why
> db> 

Hmmm.  Maybe do 'show lapic' and 'show apic' in ddb and paste that here?

-- 
John Baldwin
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