Date: Mon, 31 Aug 2009 22:31:50 +0200 From: Attilio Rao <attilio@freebsd.org> To: Marc UBM <ubm@u-boot-man.de> Cc: current@freebsd.org Subject: Re: panic: apic_free_vector: Thread already bound. Message-ID: <3bbf2fe10908311331k3e871898tc36a9846651cc53@mail.gmail.com> In-Reply-To: <20090831222650.45b6c806.ubm@u-boot-man.de> References: <20090822115958.f93fcf29.ubm.freebsd@gmail.com> <200908241631.06112.jhb@freebsd.org> <20090831222650.45b6c806.ubm@u-boot-man.de>
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2009/8/31 Marc UBM <ubm@u-boot-man.de>: > On Mon, 24 Aug 2009 16:31:05 -0400 > John Baldwin <jhb@freebsd.org> wrote: > >> 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@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. > > Is there any chance this fix might make it into 8.0? It's not a real > problem for me since I can just power-off by force, but I imagine it > might be a real pita for people who only have remote access and want > to reboot, etc. Maybe we can ship 8 with a printf() instrad than a panic()? Attilio -- Peace can only be achieved by understanding - A. Einstein
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