Date: Sat, 15 Aug 2009 17:43:39 +0200 From: Fabian Keil <freebsd-listen@fabiankeil.de> To: freebsd-current@freebsd.org Subject: snd_uaudio: Fatal trap 12: page fault while in kernel mode Message-ID: <20090815174339.6317be31@r500.local>
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I reproducible get the following panic less than a second after
inserting a Turtle Beach AudioAdvantage stick with the snd_uaudio
module loaded:
fk@r500 /usr/crash $kgdb /boot/kernel/kernel.symbols vmcore.0=20
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This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
cpuid =3D 0; apic id =3D 00
fault virtual address =3D 0x20
fault code =3D supervisor read data, page not present
instruction pointer =3D 0x20:0xffffffff803f31c1
stack pointer =3D 0x28:0xffffff803a393440
frame pointer =3D 0x28:0xffffff803a393460
code segment =3D base 0x0, limit 0xfffff, type 0x1b
=3D DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags =3D resume, IOPL =3D 0
current process =3D 36 (usbus4)
panic: from debugger
cpuid =3D 0
Uptime: 2m12s
Dumping 1992 MB (5 chunks)
chunk 0: 1MB (155 pages) ... ok
chunk 1: 1990MB (509345 pages) 1974 1958 1942 1926 1910 1894 [...]... ok
chunk 2: 2MB (273 pages) ... ok
chunk 3: 1MB (184 pages)
Reading symbols from /boot/kernel/zfs.ko...Reading symbols from /boot/kerne=
l/zfs.ko.symbols...done.
done.
[...]
done.
Loaded symbols for /boot/kernel/snd_uaudio.ko
#0 doadump () at pcpu.h:223
223 pcpu.h: No such file or directory.
in pcpu.h
(kgdb) where
#0 doadump () at pcpu.h:223
#1 0xffffffff803bb25d in boot (howto=3D260) at /usr/src/sys/kern/kern_shut=
down.c:419
#2 0xffffffff803bb64c in panic (fmt=3DVariable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:575
#3 0xffffffff801eddf7 in db_panic (addr=3DVariable "addr" is not available.
) at /usr/src/sys/ddb/db_command.c:478
#4 0xffffffff801ee201 in db_command (last_cmdp=3D0xffffffff8081d240, cmd_t=
able=3DVariable "cmd_table" is not available.
) at /usr/src/sys/ddb/db_command.c:445
#5 0xffffffff801ee450 in db_command_loop () at /usr/src/sys/ddb/db_command=
.c:498
#6 0xffffffff801f03a9 in db_trap (type=3DVariable "type" is not available.
) at /usr/src/sys/ddb/db_main.c:229
#7 0xffffffff803e6935 in kdb_trap (type=3D12, code=3D0, tf=3D0xffffff803a3=
93390) at /usr/src/sys/kern/subr_kdb.c:534
#8 0xffffffff805ac48d in trap_fatal (frame=3D0xffffff803a393390, eva=3DVar=
iable "eva" is not available.
) at /usr/src/sys/amd64/amd64/trap.c:847
#9 0xffffffff805ad04e in trap (frame=3D0xffffff803a393390) at /usr/src/sys=
/amd64/amd64/trap.c:345
#10 0xffffffff805943f3 in calltrap () at /usr/src/sys/amd64/amd64/exception=
.S:224
#11 0xffffffff803f31c1 in turnstile_broadcast (ts=3D0x0, queue=3D0) at /usr=
/src/sys/kern/subr_turnstile.c:831
#12 0xffffffff803aee70 in _mtx_unlock_sleep (m=3D0xffffffff81e37120, opts=
=3DVariable "opts" is not available.
) at /usr/src/sys/kern/kern_mutex.c:677
#13 0xffffffff80331d4f in usbd_do_request_flags (udev=3D0xffffff003fcfe000,=
mtx=3D0xffffffff81e37120, req=3D0xffffff803a393550, data=3D0xffffff803a393=
560, flags=3D0, actlen=3D0x0,=20
timeout=3D5000) at /usr/src/sys/dev/usb/usb_request.c:312
#14 0xffffffff824272e2 in uaudio_mixer_get (udev=3DVariable "udev" is not a=
vailable.
) at /usr/src/sys/modules/sound/driver/uaudio/../../../../dev/sound/usb/uau=
dio.c:2961
#15 0xffffffff8242741a in uaudio_mixer_add_ctl (sc=3D0xffffff003f3c3000, mc=
=3D0xffffff803a3938a0) at /usr/src/sys/modules/sound/driver/uaudio/../../..=
/../dev/sound/usb/uaudio.c:1604
#16 0xffffffff82429165 in uaudio_attach (dev=3D0xffffff003f723400) at /usr/=
src/sys/modules/sound/driver/uaudio/../../../../dev/sound/usb/uaudio.c:1944
#17 0xffffffff803e1569 in device_attach (dev=3D0xffffff003f723400) at devic=
e_if.h:178
#18 0xffffffff80326941 in usb_probe_and_attach_sub (udev=3D0xffffff003fcfe0=
00, uaa=3D0xffffff803a393ae0) at /usr/src/sys/dev/usb/usb_device.c:1146
#19 0xffffffff80326dfd in usb_probe_and_attach (udev=3D0xffffff003fcfe000, =
iface_index=3DVariable "iface_index" is not available.
) at /usr/src/sys/dev/usb/usb_device.c:1305
#20 0xffffffff8032f7ca in uhub_explore (udev=3D0xffffff000380a000) at /usr/=
src/sys/dev/usb/usb_hub.c:238
#21 0xffffffff8031be61 in usb_bus_explore (pm=3DVariable "pm" is not availa=
ble.
) at /usr/src/sys/dev/usb/controller/usb_controller.c:235
#22 0xffffffff803319f0 in usb_process (arg=3DVariable "arg" is not availabl=
e.
) at /usr/src/sys/dev/usb/usb_process.c:161
#23 0xffffffff80398182 in fork_exit (callout=3D0xffffffff80331930 <usb_proc=
ess>, arg=3D0xffffff80002dee88, frame=3D0xffffff803a393c80) at /usr/src/sys=
/kern/kern_fork.c:838
#24 0xffffffff805948ce in fork_trampoline () at /usr/src/sys/amd64/amd64/ex=
ception.S:561
#25 0x0000000000000000 in ?? ()
#26 0x0000000000000000 in ?? ()
#27 0x0000000000000001 in ?? ()
#28 0x0000000000000000 in ?? ()
This is on:
FreeBSD 8.0-BETA2 #3: Fri Aug 14 15:19:08 CEST 2009 fk@r500.local:/usr/obj/=
usr/src/sys/ZOEY amd64
but also happens with a slightly older kernel on i386.
Fabian
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