tstile lockups - progress - traceback

[Donald Lee <MacPPC2%c.icompute.com@localhost>]

I caught one.  This is my 6.0.2 kernel with DEBUG+DIAGNOSTIC+LOCKDEBUG
in the options, running on PowerMac G4.

I'm running my test case that generates a "TSTILE" hang.

The special kernel panics.

Unfortunately, It's way too hard to "catch" it on the screen.

Fortunately, the crash *sometimes* leaves a traceback in the system log.
I have one traceback below.

Unfortunately, this one is in the audio driver, and not relevant.

Fortunately, I know what is triggering the panic and can remove it.
(and have done so - more tests running)

(The trigger is my "dd if=/dev/audio of=/dev/null bs=1 count=1" in
etc/rc.local to shut up the speaker on boot because the speaker generates
white noise forever, otherwise)

Progress!  More test results to come....

-dgl-

Jun 16 15:21:17 charm ntpd[306]: Attempting to register mDNS
Jun 16 15:21:17 charm ntpd[306]: mDNS service registered.
Jun 16 17:55:35 charm syslogd[146]: restart 
Jun 16 17:55:35 charm /netbsd: panic: LOCKDEBUG
Jun 16 17:55:35 charm /netbsd: cpu0: Begin traceback... 
Jun 16 17:55:35 charm /netbsd: 0x102b83c0: at panic+0x4c
Jun 16 17:55:35 charm /netbsd: 0x102b8400: at lockdebug_abort1+0xdc
Jun 16 17:55:35 charm /netbsd: 0x102b8420: at mutex_enter+0x364
Jun 16 17:55:35 charm /netbsd: 0x102b8460: at ki2c_i2c_acquire_bus+0x10
Jun 16 17:55:35 charm /netbsd: 0x102b8470: at tas3004_write+0x94
Jun 16 17:55:35 charm /netbsd: 0x102b8490: at snapper_set_rate+0x2b4
Jun 16 17:55:35 charm /netbsd: 0x102b84c0: at snapper_trigger_input+0x6c
Jun 16 17:55:35 charm /netbsd: 0x102b8530: at audiostartr+0x7c
Jun 16 17:55:35 charm /netbsd: 0x102b8540: at audiosetinfo+0x8c8
Jun 16 17:55:35 charm /netbsd: 0x102b8ae0: at audio_set_defaults+0xe8
Jun 16 17:55:35 charm /netbsd: 0x102b8b90: at audio_open+0x214
Jun 16 17:55:35 charm /netbsd: 0x102b8c50: at audioopen+0xb8
Jun 16 17:55:35 charm /netbsd: 0x102b8c90: at cdev_open+0x8c
Jun 16 17:55:35 charm /netbsd: 0x102b8cc0: at spec_open+0x1f8
Jun 16 17:55:35 charm /netbsd: 0x102b8d20: at VOP_OPEN+0x38
Jun 16 17:55:35 charm /netbsd: 0x102b8d40: at vn_open+0x1e0
Jun 16 17:55:35 charm /netbsd: 0x102b8e10: at do_open+0xe4
Jun 16 17:55:35 charm /netbsd: 0x102b8e90: at sys_open+0x88
Jun 16 17:55:35 charm /netbsd: 0x102b8ec0: at syscall_plain+0x23c
Jun 16 17:55:35 charm /netbsd: 0x102b8f20: user SC trap #5 by 0xfde30d00: srr1=0
xd032
Jun 16 17:55:35 charm /netbsd:            r1=0xffffdda0 cr=0x28000088 xer=0x2000
0000 ctr=0xfde30cf8
Jun 16 17:55:35 charm /netbsd: cpu0: End traceback...
Jun 16 17:55:35 charm /netbsd: dumpsys: TBD
Jun 16 17:55:35 charm /netbsd: rebooting