B132L+ crash with mpg123

parisc-linux Thibaut VARENE 4 participants 5 messages Sep 17, 2002 – Sep 18, 2002

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Thibaut VARENE

author

2002-09-17 10:21 UTC #0 lore raw

Hi fellows !

I've been experiencing several crashes on B132L+ while playing mp3s with mpg123, the box was then running 2.4.18-pa21.
I've tried recently with 2.4.19-pa18, and it crashed again. The crash happens at random time, on random files.

What's worth mentionning is that files are played from a remote NFS filesystem. (BTW, the console shows "svc: unknown version (0)" when mounting the NFS system).

So I took my little fingers and I reproduced here what the console showed me. I hope there is now mistake in this "hand dump", though I read it twice ;)

HTH,

Thibaut VARENE
PA/Linux ESIEE Team
http://pateam.esiee.fr/

WARNING! Stack pointer and cr30 do not correspond! Dumping virtual address stack instead

Kernel Fault: Code=15 regs=11ddc640 (Addr=00277e00)

YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00000000000011000000000000001111 Not tainted

r00-03  00000000 00000023 101feac4 00000200
r04-07  1035c1fc fffff000 1035c010 00000000
r08-11  1035c1fc 00001200 1035c010 1035c010
r12-15  00029f00 1035c25c faf01590 00017000
r16-19  00028678 00028678 00002000 00000e00
r20-23  00001000 00000000 00000001 00001200
r24-27  000001ff 00029f01 00277e00 10290010
r28-31  00000000 ffffffff 11ddc640 101fea8c
sr0-3   00000000 00000246 00000000 00000246
sr4-7   00000000 00000000 00000000 00000000

IASQ: 00000000 0000000 IAOQ: 10263c78 10263c70
IIR: 0f411222 ISR: 00000000 IOR: 00277e00
CPU: 0 CR30: 11ddc000 CR31: 10338000
ORIG_R28: 11ddc7b8

Grant Grundler

2002-09-17 17:00 UTC #1 lore raw

Quoted 2 lines · Thibaut VARENE

I've been experiencing several crashes on B132L+ while playing mp3s with mpg123, the box was then running 2.4.18-pa21.

Harmony driver definitely has some bugs.
My B180 is stable until I listen to MP3s as well.
System crashes after ~1 hour of play.

Quoted 3 lines

What's worth mentionning is that files are played from a remote NFS filesystem. (BTW, the console shows "svc: unknown version (0)" when mounting the NFS system).

I'm doing everything local.

Quoted 5 lines

Kernel Fault: Code=15 regs=11ddc640 (Addr=00277e00)
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00000000000011000000000000001111 Not tainted
r00-03 00000000 00000023 101feac4 00000200

...

Quoted 1 line

IASQ: 00000000 0000000 IAOQ: 10263c78 10263c70

...
what symbols do 101feac4 and 10263c78 refer to?

grant

Matthew Wilcox

2002-09-17 17:07 UTC #2 lore raw

Quoted 9 lines · Grant Grundler

Quoted 5 lines
Kernel Fault: Code=15 regs=11ddc640 (Addr=00277e00)
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00000000000011000000000000001111 Not tainted
r00-03 00000000 00000023 101feac4 00000200
...
Quoted 1 line
IASQ: 00000000 0000000 IAOQ: 10263c78 10263c70
...
what symbols do 101feac4 and 10263c78 refer to?

10263c78 is in copy_from_user, 101feac4 is in harmony_audio_write(). the only point at which we call copy_from_user is:

/* Copy the page to an aligned buffer */ copy_from_user(played_buf.addr + (HARMONY_BUF_SIZE*buf_to_fill)
+ harmony.play_offset,
buffer+count, frame_size);

Signature · 1 line

Revolutions do not require corporate support.

Carlos O'Donell

2002-09-18 01:02 UTC #3 lore raw

Quoted 10 lines

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Kernel Fault: Code=15 regs=11ddc640 (Addr=00277e00)
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00000000000011000000000000001111 Not tainted
r00-03 00000000 00000023 101feac4 00000200
...
Quoted 1 line
IASQ: 00000000 0000000 IAOQ: 10263c78 10263c70
...
what symbols do 101feac4 and 10263c78 refer to?

Quoted 8 lines

10263c78 is in copy_from_user, 101feac4 is in harmony_audio_write(). the only point at which we call copy_from_user is:
/* Copy the page to an aligned buffer */ copy_from_user(played_buf.addr + (HARMONY_BUF_SIZE*buf_to_fill)
+ harmony.play_offset,
buffer+count, frame_size);

Data TLB miss fault / Data page fault.

Looks like it walked a little too far into some address that wasn't mapped?

Thibaut VARENE

author

2002-09-18 07:39 UTC #4 lore raw

Le mercredi, 18 sep 2002, =E0 03:02 Europe/Paris, Carlos O'Donell a = =E9crit=20
:

Quoted 20 lines

Quoted 10 lines
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Quoted 5 lines
Kernel Fault: Code=3D15 regs=3D11ddc640 (Addr=3D00277e00)
YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
PSW: 00000000000011000000000000001111 Not tainted
r00-03 00000000 00000023 101feac4 00000200
...
Quoted 1 line
IASQ: 00000000 0000000 IAOQ: 10263c78 10263c70
...
what symbols do 101feac4 and 10263c78 refer to?
Quoted 9 lines
10263c78 is in copy_from_user, 101feac4 is in harmony_audio_write(). the only point at which we call copy_from_user is:
                /* Copy the page to an aligned buffer */
                copy_from_user(played_buf.addr +=20
(HARMONY_BUF_SIZE*buf_to_fill)
					+ harmony.play_offset,
				buffer+count, frame_size);

Quoted 4 lines

Data TLB miss fault / Data page fault.
Looks like it walked a little too far into some address that wasn't mapped?

Yeah,
I caught Matthieu Delahaye lately, he told me that it was probably a failing "modulo" on the calculation of the remaining size of buffer to be sent to the audio card, or something like that...

Quoted 2 lines

c.

Thibaut VARENE
PA/Linux ESIEE Team
http://pateam.esiee.fr/=