Adam K Kirchhoff | 2 Jan 20:04 2009

kernel crashes with OSS 4.2 + FreeBSD 7.1-PRERELEASE

Two crashes this morning while playing videos with mplayer:

[ root <at> memory - /var/crash ]: kgdb /boot/kernel/kernel vmcore.2                                               
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Unread portion of the kernel message buffer:
kernel trap 12 with interrupts disabled     


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00                       
fault virtual address   = 0xe6ef6000         
fault code              = supervisor write, page not present
instruction pointer     = 0x20:0xc4b81774                   
stack pointer           = 0x28:0xe6931bac                   
frame pointer           = 0x28:0xe6931bb0                   
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1   
processor eflags        = resume, IOPL = 0                 
current process         = 1112 (irq20: oss_sblive+)         
trap number             = 12                               
panic: page fault                                           
cpuid = 0                                                   
Uptime: 51m28s                                             
Physical memory: 1010 MB                                   
Dumping 209 MB: 194 (CTRL-C to abort)  (CTRL-C to abort)  (CTRL-C to abort)  178 (CTRL-C to abort)  (CTRL-C to abort)  162 (CTRL-C to abort)  146 (CTRL-C to abort)  130 (CTRL-C to abort)  (CTRL-C to abort)  114 98 82 66 50 34 18 2                     

Reading symbols from /boot/kernel/linux.ko...Reading symbols from /boot/kernel/linux.ko.symbols...done.
done.                                                                                                 
Loaded symbols for /boot/kernel/linux.ko                                                               
Reading symbols from /boot/kernel/aio.ko...Reading symbols from /boot/kernel/aio.ko.symbols...done.   
done.                                                                                                 
Loaded symbols for /boot/kernel/aio.ko
Reading symbols from /boot/modules/kqemu.ko...done.
Loaded symbols for /boot/modules/kqemu.ko
Reading symbols from /boot/kernel/acpi.ko...Reading symbols from /boot/kernel/acpi.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/acpi.ko
Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from /boot/kernel/linprocfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linprocfs.ko
Reading symbols from /boot/kernel/smbfs.ko...Reading symbols from /boot/kernel/smbfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/smbfs.ko
Reading symbols from /boot/kernel/libiconv.ko...Reading symbols from /boot/kernel/libiconv.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/libiconv.ko
Reading symbols from /boot/kernel/libmchain.ko...Reading symbols from /boot/kernel/libmchain.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/libmchain.ko
Reading symbols from /usr/local/modules/fuse.ko...done.
Loaded symbols for /usr/local/modules/fuse.ko
Reading symbols from /usr/lib/oss/modules/osscore.ko...done.
Loaded symbols for /usr/lib/oss/modules/osscore.ko
Reading symbols from /usr/lib/oss/modules/oss_sblive.ko...done.
Loaded symbols for /usr/lib/oss/modules/oss_sblive.ko
Reading symbols from /boot/kernel/radeon.ko...done.
Loaded symbols for /boot/kernel/radeon.ko
Reading symbols from /boot/kernel/drm.ko...done.
Loaded symbols for /boot/kernel/drm.ko
#0  doadump () at pcpu.h:196
196     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:196
#1  0xc078fbb7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2  0xc078fe89 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:574
#3  0xc0aa1b6c in trap_fatal (frame=0xe6931b6c, eva=3874447360) at /usr/src/sys/i386/i386/trap.c:939
#4  0xc0aa24ff in trap (frame=0xe6931b6c) at /usr/src/sys/i386/i386/trap.c:320
#5  0xc0a8862b in calltrap () at /usr/src/sys/i386/i386/exception.s:159
#6  0xc4b81774 in oss_memset () from /usr/lib/oss/modules/osscore.ko
#7  0xc4b5d4e0 in do_outputintr () from /usr/lib/oss/modules/osscore.ko
#8  0xc4b5d789 in audio_outputintr () from /usr/lib/oss/modules/osscore.ko
#9  0xc4bd56d8 in sbliveintr () from /usr/lib/oss/modules/oss_sblive.ko
#10 0xc4b81b00 in ossintr () from /usr/lib/oss/modules/osscore.ko
#11 0xc076f88b in ithread_loop (arg=0xc41aca50) at /usr/src/sys/kern/kern_intr.c:1088
#12 0xc076c3f9 in fork_exit (callout=0xc076f6d0 <ithread_loop>, arg=0xc41aca50, frame=0xe6931d38)
    at /usr/src/sys/kern/kern_fork.c:804
#13 0xc0a886a0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:264
(kgdb)

And:


[ root <at> memory - /var/crash ]: kgdb /boot/kernel/kernel vmcore.1                                               
GNU gdb 6.1.1 [FreeBSD]                                                                                       
Copyright 2004 Free Software Foundation, Inc.                                                                 
GDB is free software, covered by the GNU General Public License, and you are                                   
welcome to change it and/or distribute copies of it under certain conditions.                                 
Type "show copying" to see the conditions.                                                                     
There is absolutely no warranty for GDB.  Type "show warranty" for details.                                   
This GDB was configured as "i386-marcel-freebsd"...                                                           

Unread portion of the kernel message buffer:
kernel trap 12 with interrupts disabled     


Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 06                       
fault virtual address   = 0xe6eea000         
fault code              = supervisor write, page not present
instruction pointer     = 0x20:0xc4a59c82                   
stack pointer           = 0x28:0xe687eb0c                   
frame pointer           = 0x28:0xe687eb30                   
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1   
processor eflags        = resume, IOPL = 0                 
current process         = 1104 (irq20: oss_sblive+)         
trap number             = 12                               
panic: page fault                                           
cpuid = 2                                                   
Uptime: 1h52m34s                                           
Physical memory: 1010 MB                                   
Dumping 194 MB: (CTRL-C to abort)  179 163 147 131 115 99 (CTRL-C to abort)  83 67 51 35 19 3

Reading symbols from /boot/kernel/linux.ko...Reading symbols from /boot/kernel/linux.ko.symbols...done.
done.                                                                                                 
Loaded symbols for /boot/kernel/linux.ko                                                               
Reading symbols from /boot/kernel/aio.ko...Reading symbols from /boot/kernel/aio.ko.symbols...done.   
done.                                                                                                 
Loaded symbols for /boot/kernel/aio.ko
Reading symbols from /boot/modules/kqemu.ko...done.
Loaded symbols for /boot/modules/kqemu.ko
Reading symbols from /boot/kernel/acpi.ko...Reading symbols from /boot/kernel/acpi.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/acpi.ko
Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from /boot/kernel/linprocfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linprocfs.ko
Reading symbols from /boot/kernel/smbfs.ko...Reading symbols from /boot/kernel/smbfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/smbfs.ko
Reading symbols from /boot/kernel/libiconv.ko...Reading symbols from /boot/kernel/libiconv.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/libiconv.ko
Reading symbols from /boot/kernel/libmchain.ko...Reading symbols from /boot/kernel/libmchain.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/libmchain.ko
Reading symbols from /usr/local/modules/fuse.ko...done.
Loaded symbols for /usr/local/modules/fuse.ko
Reading symbols from /usr/lib/oss/modules/osscore.ko...done.
Loaded symbols for /usr/lib/oss/modules/osscore.ko
Reading symbols from /usr/lib/oss/modules/oss_sblive.ko...done.
Loaded symbols for /usr/lib/oss/modules/oss_sblive.ko
Reading symbols from /boot/kernel/radeon.ko...done.
Loaded symbols for /boot/kernel/radeon.ko
Reading symbols from /boot/kernel/drm.ko...done.
Loaded symbols for /boot/kernel/drm.ko
#0  doadump () at pcpu.h:196
196     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:196
#1  0xc078fbb7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2  0xc078fe89 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:574
#3  0xc0aa1b6c in trap_fatal (frame=0xe687eacc, eva=3874398208) at /usr/src/sys/i386/i386/trap.c:939
#4  0xc0aa24ff in trap (frame=0xe687eacc) at /usr/src/sys/i386/i386/trap.c:320
#5  0xc0a8862b in calltrap () at /usr/src/sys/i386/i386/exception.s:159
#6  0xc4a59c82 in export16ne () from /usr/lib/oss/modules/osscore.ko
#7  0xc4a5ae73 in vmix_play_callback () from /usr/lib/oss/modules/osscore.ko
#8  0xc4a3733b in finish_output_interrupt () from /usr/lib/oss/modules/osscore.ko
#9  0xc4a375c7 in do_outputintr () from /usr/lib/oss/modules/osscore.ko
#10 0xc4a37789 in audio_outputintr () from /usr/lib/oss/modules/osscore.ko
#11 0xc4aaf6d8 in sbliveintr () from /usr/lib/oss/modules/oss_sblive.ko
#12 0xc4a5bb00 in ossintr () from /usr/lib/oss/modules/osscore.ko
#13 0xc076f88b in ithread_loop (arg=0xc4392000) at /usr/src/sys/kern/kern_intr.c:1088
#14 0xc076c3f9 in fork_exit (callout=0xc076f6d0 <ithread_loop>, arg=0xc4392000, frame=0xe687ed38)
    at /usr/src/sys/kern/kern_fork.c:804
#15 0xc0a886a0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:264

Here's the output of ossinfo:

Version info: OSS 4.2 (b 081213/200901020105) (0x00040100) OSS_HG
Hg revision: changeset: 594:f054e739c2bb, tag: tip, date: Wed Dec 31 00:07:02 2008 +0200, summary: Fixed a typo in oss_ich.c
Platform: FreeBSD/i386 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #7: Mon Nov  3 18:50:07 EST 2008     root <at> memory.visualtech.com:/usr/obj/usr/src/sys/GENERIC (memory.visualtech.com)

Number of audio devices:        5
Number of audio engines:        9
Number of MIDI devices:         1
Number of mixer devices:        1


Device objects
 0: oss_sblive0 SB Live interrupts=57300 (57300)

MIDI devices (/dev/midi*)
0: SB Live external MIDI (MIDI port 1 of device object 0)

Mixer devices
 0: SB Live (EM28028) (Mixer 0 of device object 0)

Audio devices
SB Live main                      /dev/oss/oss_sblive0/pcm0  (device index 0)
SB Live front out                 /dev/oss/oss_sblive0/pcm1  (device index 1)
SB Live side out                  /dev/oss/oss_sblive0/pcm2  (device index 2)
SB Live center/lfe out            /dev/oss/oss_sblive0/pcm3  (device index 3)
SB Live 5.1 output device         /dev/oss/oss_sblive0/pcm4  (device index 4)


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Hannu Savolainen | 3 Jan 06:36 2009

Re: kernel crashes with OSS 4.2 + FreeBSD 7.1-PRERELEASE

Adam K Kirchhoff wrote:
>
> Two crashes this morning while playing videos with mplayer:
>
Might it be possible that these crashes occur when you hit stop/pause or 
when the chapter/whatever changes in the video? I think an interrupt 
occurs after the device has been closed and the DMA buffer removed. 
However I don't know why this situation happens only in your system. The 
related code has been unchanged for years so somebody else must have 
experienced this crash too. Maybe doing fresh recompile of OSS helps.

Best regards,

Hannu
Adam K Kirchhoff | 3 Jan 15:38 2009

Re: kernel crashes with OSS 4.2 + FreeBSD 7.1-PRERELEASE

On Sat, 03 Jan 2009 07:36:11 +0200
Hannu Savolainen <hannu <at> opensound.com> wrote:

> Adam K Kirchhoff wrote:
> >
> > Two crashes this morning while playing videos with mplayer:
> >
> Might it be possible that these crashes occur when you hit stop/pause or 
> when the chapter/whatever changes in the video? I think an interrupt 
> occurs after the device has been closed and the DMA buffer removed. 
> However I don't know why this situation happens only in your system. The 
> related code has been unchanged for years so somebody else must have 
> experienced this crash too. Maybe doing fresh recompile of OSS helps.

Yes, now that I think about it, I think I had just paused the video
both times.  In fact, I just remotely logged into the machine, killed
artsd (so I could run 'soundoff' and then update/recompile the driver),
and the machine panicked again.

It is an odd crash.  I have a machine at home with an SB Live running
FreeBSD (both amd64 and i386 on separate drives) and haven't had this
problem.  When this is done booting back up, I'll recompile OSS and see
if I can run a few tests to reproduce this problem.

-- 
Adam K Kirchhoff
Digital Color Image
7025 Central Highway
Pennsauken, NJ 08109
Phone: 856-662-5532

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Paulo Matias | 3 Jan 18:35 2009

[PATCH] [OSSv4.2] ossphone latency improvements

Hi,

I tried Hannu's SNDCTL_DSP_GETOSPACE suggestion, but I ran into very
strange problems (like hearing the DTMF dial tones being repeated when
call was already in progress). So I fixed the issue by closing and
reopening the devices. I also reduced the fragment size. Now ossphone
works very well.

The attached patch implements these latency improvements.

Hint: this patch can be applied by using "hg import ossphone.diff", as
it has the "HG changeset patch" headers. The "hg import" command
automatically patches the repository, adds all new files if any, and
commits the changes.

Just for the curious about slmodem status, I got a V.22 connection to
work with OSS, but I'm still running into problems with V.34 and V.90
connections. I'm still working in this.

Best regards,

Paulo Matias
Attachment (ossphone.diff): application/octet-stream, 9 KiB
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Paulo Matias | 3 Jan 18:41 2009

[PATCH] [SMALL FEATURE] Add TOGGLE option to ossmix

Hi,

This patch adds a small feature to ossmix, that can be useful in
little scripts, and to easily implement mute/unmute keyboard key
features.

Once this patch is applied, an user can do, for example:

ossmix jack.green.mute toggle

And this will toggle the mute control between ON and OFF.

This feature was suggested by the user FreakGuard in the #oss IRC channel.

Note: This patch can also be applied by using "hg import ossmix-toggle.diff".

Best regards,

Paulo Matias
Attachment (ossmix-toggle.diff): application/octet-stream, 2419 bytes
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Yair K. | 3 Jan 18:53 2009
Picon

[PATCH] Add another ICH10 id, fix osspartysh compile under FreeBSD

Hi,

  This patch adds another ICH10 id to oss_hdaudio (reported by Ionic), and 
fixes osspartysh compile under FreeBSD (reported by Adam).

Yours,
	Yair K.
Attachment (oss-small-diff): text/x-diff, 2241 bytes
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Hannu Savolainen | 5 Jan 16:45 2009

Re: [PATCH] [SMALL FEATURE] Add TOGGLE option to ossmix

Ok. In the hg version now.

Best regards,

Hannu
--------
Paulo Matias wrote:
> Hi,
>
> This patch adds a small feature to ossmix, that can be useful in
> little scripts, and to easily implement mute/unmute keyboard key
> features.
>
> Once this patch is applied, an user can do, for example:
>
> ossmix jack.green.mute toggle
>
> And this will toggle the mute control between ON and OFF.
>
> This feature was suggested by the user FreakGuard in the #oss IRC channel.
>
> Note: This patch can also be applied by using "hg import ossmix-toggle.diff".
>
>
> Best regards,
>
> Paulo Matias
>   
> ------------------------------------------------------------------------
>
> _______________________________________________
> oss-devel mailing list
> oss-devel <at> mailman.opensound.com
> http://mailman.opensound.com/mailman/listinfo/oss-devel
>   
Hannu Savolainen | 5 Jan 16:46 2009

Re: [PATCH] Add another ICH10 id, fix osspartysh compile under FreeBSD

Ok. In the hg version now.

Best regards,

Hannu
--------
Yair K. wrote:
> Hi,
>
>   This patch adds another ICH10 id to oss_hdaudio (reported by Ionic), and 
> fixes osspartysh compile under FreeBSD (reported by Adam).
>
> Yours,
> 	Yair K.
>   
> ------------------------------------------------------------------------
>
> _______________________________________________
> oss-devel mailing list
> oss-devel <at> mailman.opensound.com
> http://mailman.opensound.com/mailman/listinfo/oss-devel
Adam K Kirchhoff | 6 Jan 16:01 2009

Re: kernel crashes with OSS 4.2 + FreeBSD 7.1-PRERELEASE

On Saturday 03 January 2009 09:38:56 Adam K Kirchhoff wrote:

> On Sat, 03 Jan 2009 07:36:11 +0200

>

> Hannu Savolainen <hannu <at> opensound.com> wrote:

> > Adam K Kirchhoff wrote:

> > > Two crashes this morning while playing videos with mplayer:

> >

> > Might it be possible that these crashes occur when you hit stop/pause or

> > when the chapter/whatever changes in the video? I think an interrupt

> > occurs after the device has been closed and the DMA buffer removed.

> > However I don't know why this situation happens only in your system. The

> > related code has been unchanged for years so somebody else must have

> > experienced this crash too. Maybe doing fresh recompile of OSS helps.

>

> Yes, now that I think about it, I think I had just paused the video

> both times. In fact, I just remotely logged into the machine, killed

> artsd (so I could run 'soundoff' and then update/recompile the driver),

> and the machine panicked again.

>

> It is an odd crash. I have a machine at home with an SB Live running

> FreeBSD (both amd64 and i386 on separate drives) and haven't had this

> problem. When this is done booting back up, I'll recompile OSS and see

> if I can run a few tests to reproduce this problem.

Since recompiling, I haven't had a crash yet. I'll let everyone know if it starts happening again.

Adam


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Adam K Kirchhoff | 7 Jan 17:37 2009

Re: kernel crashes with OSS 4.2 + FreeBSD 7.1-PRERELEASE

On Tue, 6 Jan 2009 10:01:49 -0500
Adam K Kirchhoff <adamk <at> voicenet.com> wrote:

> On Saturday 03 January 2009 09:38:56 Adam K Kirchhoff wrote:
> > On Sat, 03 Jan 2009 07:36:11 +0200
> >
> > Hannu Savolainen <hannu <at> opensound.com> wrote:
> > > Adam K Kirchhoff wrote:
> > > > Two crashes this morning while playing videos with mplayer:
> > >
> > > Might it be possible that these crashes occur when you hit stop/pause or
> > > when the chapter/whatever changes in the video? I think an interrupt
> > > occurs after the device has been closed and the DMA buffer removed.
> > > However I don't know why this situation happens only in your system. The
> > > related code has been unchanged for years so somebody else must have
> > > experienced this crash too. Maybe doing fresh recompile of OSS helps.
> >
> > Yes, now that I think about it, I think I had just paused the video
> > both times.  In fact, I just remotely logged into the machine, killed
> > artsd (so I could run 'soundoff' and then update/recompile the driver),
> > and the machine panicked again.
> >
> > It is an odd crash.  I have a machine at home with an SB Live running
> > FreeBSD (both amd64 and i386 on separate drives) and haven't had this
> > problem.  When this is done booting back up, I'll recompile OSS and see
> > if I can run a few tests to reproduce this problem.
> 
> Since recompiling, I haven't had a crash yet.  I'll let everyone know if it 
> starts happening again.

It happened again this morning.  I was playing a video with mplayer,
hit pause, and the entire machine crashed:

[ root <at> memory - /var/crash ]: kgdb /boot/kernel/kernel vmcore.3 
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...

Unread portion of the kernel message buffer:
kernel trap 12 with interrupts disabled

Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 06
fault virtual address	= 0xe6eea000
fault code		= supervisor write, page not present
instruction pointer	= 0x20:0xc4a20774
stack pointer	        = 0x28:0xe681fbac
frame pointer	        = 0x28:0xe681fbb0
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1, gran 1
processor eflags	= resume, IOPL = 0
current process		= 1104 (irq20: oss_sblive+)
trap number		= 12
panic: page fault
cpuid = 2
Uptime: 1h9m20s
Physical memory: 1010 MB
Dumping 197 MB: (CTRL-C to abort)  182 166 150 134 118 102 86 70 54 38 22 6

Reading symbols from /boot/kernel/linux.ko...Reading symbols from /boot/kernel/linux.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linux.ko
Reading symbols from /boot/kernel/aio.ko...Reading symbols from /boot/kernel/aio.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/aio.ko
Reading symbols from /boot/modules/kqemu.ko...done.
Loaded symbols for /boot/modules/kqemu.ko
Reading symbols from /boot/kernel/acpi.ko...Reading symbols from /boot/kernel/acpi.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/acpi.ko
Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from /boot/kernel/linprocfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linprocfs.ko
Reading symbols from /boot/kernel/smbfs.ko...Reading symbols from /boot/kernel/smbfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/smbfs.ko
Reading symbols from /boot/kernel/libiconv.ko...Reading symbols from /boot/kernel/libiconv.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/libiconv.ko
Reading symbols from /boot/kernel/libmchain.ko...Reading symbols from /boot/kernel/libmchain.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/libmchain.ko
Reading symbols from /usr/local/modules/fuse.ko...done.
Loaded symbols for /usr/local/modules/fuse.ko
Reading symbols from /usr/lib/oss/modules/osscore.ko...done.
Loaded symbols for /usr/lib/oss/modules/osscore.ko
Reading symbols from /usr/lib/oss/modules/oss_sblive.ko...done.
Loaded symbols for /usr/lib/oss/modules/oss_sblive.ko
Reading symbols from /usr/lib/oss/modules/oss_ich.ko...done.
Loaded symbols for /usr/lib/oss/modules/oss_ich.ko
Reading symbols from /boot/kernel/radeon.ko...done.
Loaded symbols for /boot/kernel/radeon.ko
Reading symbols from /boot/kernel/drm.ko...done.
Loaded symbols for /boot/kernel/drm.ko
Reading symbols from /boot/kernel/if_bridge.ko...Reading symbols from /boot/kernel/if_bridge.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/if_bridge.ko
Reading symbols from /boot/kernel/bridgestp.ko...Reading symbols from /boot/kernel/bridgestp.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/bridgestp.ko
Reading symbols from /boot/kernel/if_tap.ko...Reading symbols from /boot/kernel/if_tap.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/if_tap.ko
#0  doadump () at pcpu.h:196
196	pcpu.h: No such file or directory.
	in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:196
#1  0xc078fbb7 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2  0xc078fe89 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:574
#3  0xc0aa1b6c in trap_fatal (frame=0xe681fb6c, eva=3874398208) at /usr/src/sys/i386/i386/trap.c:939
#4  0xc0aa24ff in trap (frame=0xe681fb6c) at /usr/src/sys/i386/i386/trap.c:320
#5  0xc0a8862b in calltrap () at /usr/src/sys/i386/i386/exception.s:159
#6  0xc4a20774 in oss_memset () from /usr/lib/oss/modules/osscore.ko
#7  0xc49fc4e0 in do_outputintr () from /usr/lib/oss/modules/osscore.ko
#8  0xc49fc789 in audio_outputintr () from /usr/lib/oss/modules/osscore.ko
#9  0xc4a766d8 in sbliveintr () from /usr/lib/oss/modules/oss_sblive.ko
#10 0xc4a20b00 in ossintr () from /usr/lib/oss/modules/osscore.ko
#11 0xc076f88b in ithread_loop (arg=0xc4392710) at /usr/src/sys/kern/kern_intr.c:1088
#12 0xc076c3f9 in fork_exit (callout=0xc076f6d0 <ithread_loop>, arg=0xc4392710, frame=0xe681fd38)
    at /usr/src/sys/kern/kern_fork.c:804
#13 0xc0a886a0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:264

I'm willing to do any testing necessary to fix this bug.

Adam

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