panic rebooting yesterday's kernel

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

Booted a yesterday's source amd64 kernel, and on reboot

[ 17037.8583948] unmounting 0xfffffef63b813000 / (/dev/dk14)...
[ 17037.8583948] forcefully unmounting / (/dev/dk14)...
[ 17037.8783949] dk14 at wd4 (root) deleted
[ 17037.8783949] wd4: detached
[ 17037.8883950] atabus8: detached
[ 17037.8883950] ahcisata1: detached
[ 17038.6083908] Kernel lock error: _kernel_lock,244: spinout

[ 17038.6083908] lock address : 0xffffffff81082f00 type     :               spin
[ 17038.6083908] initialized  : 0xffffffff80bc8340
[ 17038.6083908] shared holds :                  0 exclusive:                  1
[ 17038.6083908] shares wanted:                  0 exclusive:                  3
[ 17038.6083908] relevant cpu :                  0 last held:                  1
[ 17038.6083908] relevant lwp : 0xfffffefd19744080 last held: 0xfffffef642bf4280
[ 17038.6083908] last locked* : 0xffffffff80a42ab1 unlocked : 0xffffffff80323d4c
[ 17038.6083908] curcpu holds :                  0 wanted by: 0xfffffefd19744080

[ 17038.6763377] Skipping crash dump on recursive panic
[ 17038.6816213] panic: LOCKDEBUG: Kernel lock error: _kernel_lock,244: spinout
[ 17038.6886673] cpu0: Begin traceback...
[ 17038.6886673] vpanic() at netbsd:vpanic+0x156
[ 17038.6983892] snprintf() at netbsd:snprintf
[ 17038.6983892] lockdebug_more() at netbsd:lockdebug_more
[ 17038.7083890] _kernel_lock() at netbsd:_kernel_lock+0x22a
[ 17038.7183890] intr_biglock_wrapper() at netbsd:intr_biglock_wrapper+0x14
[ 17038.7183890] Xhandle_ioapic_edge17() at netbsd:Xhandle_ioapic_edge17+0x6e
[ 17038.7296195] --- interrupt ---
[ 17038.7296195] _kernel_lock() at netbsd:_kernel_lock+0x1f8
[ 17038.7403251] callout_softclock() at netbsd:callout_softclock+0x425
[ 17038.7483888] softint_dispatch() at netbsd:softint_dispatch+0xf5
address 0xffffc8025cf990b8 is invalid
address 0xffffc8025cf990b0 is invalid
address 0xffffc8025cf990c0 is invalid
address 0xffffc8025cf990b8 is invalid
address 0xffffc8025cf990c8 is invalid
address 0xffffc8025cf990c0 is invalid
address 0xffffc8025cf990d0 is invalid
address 0xffffc8025cf990c8 is invalid
[ 17038.7784674] DDB lost frame for netbsd:Xsoftintr+0x4f, trying 0xffffc8025cf98ff0
[ 17038.7900680] Xsoftintr() at netbsd:Xsoftintr+0x4f
[ 17038.7993371] --- interrupt ---
address 0xffffc8025cf990c8 is invalid
address 0xffffc8025cf99080 is invalid
[ 17038.8084475] Bad frame pointer: 0xffffc8025cf98450
[ 17038.8084475] ffffc8025cf98450:
[ 17038.8185590] cpu0: End traceback...


so no ddb either...


Cheers,

Patrick