Date: Thu, 29 Apr 2010 22:07:54 -0400 From: Justin Hibbits <jrh29@alumni.cwru.edu> To: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Kernel panic when loading snd_ai2s module Message-ID: <q2vfd9cd3451004291907hf27400b5xf81418c2d9f7fc8b@mail.gmail.com>
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When loading the snd_ai2s module, on both Nathan's livefs (20100418 livefs)
and r207303, I get the following panic (with details):
snapper0: <Texas Instruments TAS3004 Audio Codec> at addr 0x6a on iicbus0
panic: vm_fault: fault on nofault entry, addr: deadc000
KDB: enter: panic
[ thread pid 1741 tid 100145 ]
Stopped at 0x33feb4: addi r0, r0, 0x0
db> where
Tracing pid 1741 tid 100145 td 0xbfea240
0xe5315420: at panic+0x13c
0xe5315470: at vm_fault+0x178
0xe5315590: at trap_pfault+0x174
0xe53155c0: at trap+0x6dc
0xe5315680: at powerpc_interrupt+0x100
0xe53156a0: kernel DSI read trap @ 0xdeadc0de by powerpc_config_intr+0x60:
srr1=0x9032
r1=0xe5315750 cr=0x40002032 xer=0 ctr=0x1 sr=0x40000000
0xe5315750: at powerpc_config_intr+0x2c
0xe5315770: at aoagpio_attach+0xa8
0xe53157a0: at device_attach+0x338
0xe53157d0: at device_probe_and_attach+0x5c
0xe53157e0: at bus_generic_driver_added+0x90
0xe5315800: at devclass_driver_added+0xac
0xe5315830: at driver_module_handler+0x238
0xe5315860: at module_register_init+0xb8
0xe5315880: at linker_load_module+0x968
0xe5315a50: at kern_kldload+0xcc
0xe5315a80: at kldload+0x70
0xe5315ab0: at trap+0x384
0xe5315b70: at powerpc_interrupt+0x100
0xe5315b90: user SC trap by 0x418b9298: srr1=0xd032
r1=0x7fffd850 cr=0x40022082 xer=0 ctr=0x418b9290
db> show registers
r0 0x33fea8 kdb_enter+0x54
r1 0xe5315400
r2 0x9d7a80 __pcpu
r3 0x9d7a80 __pcpu
r4 0xa
r5 0x7ced64
r6 0xdf dsisize+0x3b
r7 0x9d7d00 ofw_pmap
r8 0x3f168f inm_release_locked+0x3
r9 0x850000 nd_prefix
r10 0xa
r11 0xe5315400
r12 0x20009034
r13 0
r14 0xdeadc000
r15 0x86b004 Giant
r16 0x82fd98 linker_hintfile
r17 0
r18 0
r19 0x9d6e00 vm_page_queue_lock
r20 0x82f978 M_LINKER
r21 0x7f79ec
r22 0x126c500
r23 0
r24 0
r25 0xe53156a8
r26 0xdeadc000
r27 0xbfea240
r28 0x850000 nd_prefix
r29 0x850000 nd_prefix
r30 0x7d07b4
r31 0xe5315400
srr0 0x33feb4 kdb_enter+0x60
srr1 0x9032 dsisize+0x8f8e
lr 0x33feb4 kdb_enter+0x60
ctr 0
cr 0x40009034
xer 0
dar 0
dsisr 0
0x33feb4: addi r0, r0, 0x0
Machine details: PowerMac G4 MDD, 2GB RAM
I can provide more details if necessary. It's fully reproducible. I can't
be certain of when it started, as the last build I used regularly was from
February 18 (reinstalled from snapshot CD last weekend), and the sound
driver was compiled into the kernel. I have not tried compiling the driver
into this kernel.
- Justin
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