One of the alpha package clients panicked with this. It was under very high load at the time (25 simultaneous package builds):
fatal kernel trap:
trap entry = 0x2 (memory management fault)
faulting va = 0xdeadc0dedeadc0e6
type = access violation
cause = store instruction
pc = 0xfffffc000053453c
ra = 0xfffffc000053b2a8
sp = 0xfffffe001da15b30
curthread = 0xfffffc003e33b930
pid = 3, comm = g_up
Stopped at add_to_worklist+0xac: stq a0,0x8(t0) <0xdeadc0dedeadc0e6>
<a0=0xfffffc0035deb200,t0=0xdeadc0dedeadc0de>
db> trace
add_to_worklist() at add_to_worklist+0xac
handle_written_inodeblock() at handle_written_inodeblock+0x5e8
softdep_disk_write_complete() at softdep_disk_write_complete+0xac
bufdone() at bufdone+0x19c
bufdonebio() at bufdonebio+0x1c
biodone() at biodone+0x28
g_dev_done() at g_dev_done+0xd8
biodone() at biodone+0x28
g_io_schedule_up() at g_io_schedule_up+0x4c
g_up_procbody() at g_up_procbody+0x9c
fork_exit() at fork_exit+0x100
exception_return() at exception_return
--- root of call graph ---
db>
msg50893/pgp00000.pgp
Description: PGP signature
