panic: mutex Giant not owned at /usr/src/sys/kern/tty_ttydisc.c:1127

[Maksim Yevmenkin]

On Fri, Jan 23, 2009 at 1:31 PM, Lars Engels <lme at freebsd.org> wrote:
> On Fri, Jan 23, 2009 at 05:29:20PM +0100, Ed Schouten wrote:
>> Hello Lars,
>>
>> As HPS said, the issue seems to be related to ubt, but there's still
>> something else that is interesting to see here:
>>
>> * Lars Engels <lme at FreeBSD.org> wrote:
>> > #2  0xc0859512 in panic (fmt=Variable "fmt" is not available.
>> > ) at /usr/src/sys/kern/kern_shutdown.c:576
>> > #3  0xc0849fc7 in _mtx_assert (m=0xc0d76e90, what=4, file=0xc0c30b4c "/usr/src/sys/kern/tty_ttydisc.c", line=1127) at /usr/src/sys/kern/kern_mutex.c:639
>> > #4  0xc08aebad in ttydisc_getc (tp=0xc4650c00, buf=0xf12ea920, len=128) at /usr/src/sys/kern/tty_ttydisc.c:1127
>> > #5  0xc0740604 in sctty_outwakeup (tp=0xc4650c00) at /usr/src/sys/dev/syscons/syscons.c:323
>> > #6  0xc0740b6c in scgetc (sc=0xc0f11f20, flags=3) at /usr/src/sys/dev/syscons/syscons.c:3281
>> > #7  0xc0741190 in sc_cngetc (cd=0xc0cc9be0) at /usr/src/sys/dev/syscons/syscons.c:1607
>> > #8  0xc0821a28 in cncheckc () at /usr/src/sys/kern/kern_cons.c:379
>> > #9  0xc0821a66 in cngetc () at /usr/src/sys/kern/kern_cons.c:357
>> > #10 0xc04bfb15 in db_readline (lstart=0xc0d45cc0 "\n", lsize=120) at /usr/src/sys/ddb/db_input.c:326
>>
>> Sam Leffler also reported this issue to me privately. I'll see what I
>> can do to fix this.
>
> Thanks a lot. BTW it doesn't panic on every boot but only from time to
> time.

does the system panics if you remove usb2_bluetooth_ng? in other
words, i'm interested to know if usb2_bluetooth_ng is somehow still
causing the panic.

thanks,
max

>