I got this on one of the gohan machines overnight. These machines have failing disks -- I get a lot of hard read errors, but the INVARIANTS panic could better be replaced by something else.
I reported another instance of this to sos a few weeks ago but didn't
hear a reply.
Kris
ad0: hard error cmd=read fsbn 23909328 of 11954632-11954759
status=59 error=40
ad0: READ command timeout tag=0 serv=0 - resetting
ata0: resetting devices ..
ad0: removed from configuration
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xdeadc0de
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc019f130
stack pointer = 0x10:0xd67ecc44
frame pointer = 0x10:0xd67ecc6c
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 13 (swi6: tty:sio clock)
kernel: type 12 trap, code=0
Stopped at ad_detach+0x50: cmpl %esi,0(%ebx)
db> Context switches not allowed in the debugger.
db> trace
ad_detach(c3fcce30,0,c0403b0a,1,c5438e40) at ad_detach+0x50
ata_reinit(c3fcce00,c040523f,c03f7b8a,0,0) at ata_reinit+0xab
ad_timeout(c5438e40,0,c04176ec,bf,1ca1cf) at ad_timeout+0x158
softclock(0,0,c0414707,230,c14f9760) at softclock+0x19c
ithread_loop(c14ec900,d67ecd48,c0414568,35a,0) at ithread_loop+0x182
fork_exit(c0243a30,c14ec900,d67ecd48) at fork_exit+0xa5
fork_trampoline() at fork_trampoline+0x1a
--- trap 0x1, eip = 0, esp = 0xd67ecd7c, ebp = 0 ---
db>
msg48229/pgp00000.pgp
Description: PGP signature
