Re: panic: apic_free_vector: Thread already bound.

On Saturday 22 August 2009 5:59:58 am Marc UBM wrote:
> 
> Hiho! :-)
> 
> I'm seeing above panic in the final stages of the shutdown process.
> Coredump is available, bt as follows, textdump attached.
> 
> 
> FreeBSD hamstor 8.0-BETA2 FreeBSD 8.0-BETA2 #14: Wed Aug 19 22:43:17
> CEST 2009     oni0_at_hamstor:/usr/obj/usr/src/sys/HAMSTOR  amd64
> 
> 
> (kgdb) bt
> #0  doadump () at pcpu.h:223
> #1  0xffffffff801b561c in db_fncall (dummy1=Variable "dummy1" is not
> #available.
> ) at /usr/src/sys/ddb/db_command.c:548
> #2  0xffffffff801b5951 in db_command (last_cmdp=0xffffffff808594a0,
> #cmd_table=Variable "cmd_table" is not available.
> ) at /usr/src/sys/ddb/db_command.c:445
> #3  0xffffffff801b5ba0 in db_command_loop ()
> #at /usr/src/sys/ddb/db_command.c:498 4  0xffffffff801b7b69 in db_trap
> #(type=Variable "type" is not available.
> ) at /usr/src/sys/ddb/db_main.c:229
> #5  0xffffffff8038d775 in kdb_trap (type=3, code=0,
> #tf=0xffffff8000017760) at /usr/src/sys/kern/subr_kdb.c:535 6
> #0xffffffff8060e170 in trap (frame=0xffffff8000017760)
> #at /usr/src/sys/amd64/amd64/trap.c:611 7  0xffffffff805f3b23 in
> #calltrap () at /usr/src/sys/amd64/amd64/exception.S:224 8
> #0xffffffff8038d94d in kdb_enter (why=0xffffffff80681954 "panic",
> #msg=0xa <Address 0xa out of bounds>) at cpufunc.h:63 9
> #0xffffffff8035e04b in panic (fmt=Variable "fmt" is not available.
> ) at /usr/src/sys/kern/kern_shutdown.c:562
> #10 0xffffffff805fafbb in apic_free_vector (apic_id=Variable "apic_id"
> #is not available.
> ) at /usr/src/sys/amd64/amd64/local_apic.c:995
> #11 0xffffffff805f7560 in intr_remove_handler (cookie=Variable "cookie"
> #is not available.
> ) at /usr/src/sys/amd64/amd64/intr_machdep.c:203
> #12 0xffffffff806250d4 in hpt_shutdown_vbus
> #(vbus_ext=0xffffff8000254000, howto=Variable "howto" is not available.
> ) at /usr/src/sys/dev/hptrr/hptrr_osm_bsd.c:361
> #13 0xffffffff8035da8b in boot (howto=16392)
> #at /usr/src/sys/kern/kern_shutdown.c:419 14 0xffffffff8035e126 in
> #reboot (td=Variable "td" is not available.
> ) at /usr/src/sys/kern/kern_shutdown.c:173
> #15 0xffffffff8060dbba in syscall (frame=0xffffff8000017c80)
> #at /usr/src/sys/amd64/amd64/trap.c:982 16 0xffffffff805f3e01 in
> #Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.S:373 17
> #0x000000000040892c in ?? ()
> Previous frame inner to this frame (corrupt stack?)
> 
> frame #12 & #13 make me suspect the hptrr driver (again :-)), but I'm
> not sure.

Ah, any driver shutting off its interrupt handler during shutdown would 
actually trigger this.  The hptrr driver doesn't really need to do this 
during shutdown, but I think we don't want to panic in this case.  
Unfortunately we don't currently have a "in_shutdown" type of global flag 
that we can check in apic_free_vector() to not worry about the thread already 
being bound.

-- 
John Baldwin