On Wed, 28 Jan 2004, Greg KH wrote:
> On Mon, Jan 26, 2004 at 10:57:28PM +0000, Peter Denison wrote:
> > The following kernel panic is repeatable on both 2.4.22 and 2.4.24. I'm
> > afraid I can't remember exactly which FTDI device it is but I can find out
> > if necessary - it's on a different machine.
>
> If you apply the patch posted by Pete, does it fix the problem?
No. I'm afraid it doesn't.
The exactly repeatable circumstances of the panic are:
Run { read from /dev/ttyUSB0; write to /dev/null; } at nice -5
Turn off attached USB sound card.
The panic is almost identical to the one I posted before:
This is with Pete Zaitcev's "post-writes" patch
kernel BUG at sched.c:564!
invalid operand: 0000
CPU: 0
EIP: 0010[<c0114f83>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010292
eax: 00000018 ebx: c8d4ac74 ecx: 00000009 edx: 00000000
esi: ccd1c000 edi: ccd1c000 ebp: ccd1dd3c esp: ccd1dd18
ds: 0018 es: 0018 ss: 0018
Process hotplug (pid: 2129, stackpage=ccd1d000)
Stack: c023d9aa de314113 ccd1c000 00000000 f231f031 fcfcfc25 c8d4ac74 ccd1c000
ceb0c2bc cf363000 c0105b24 00000001 ccd1c000 c8d4ac73 c8d4ac7c c8d4ac1c
c8d4ac00 c0105c70 c8d4ac74 c8d4ac00 00000000 d08c762f ceb0c000 cf363460
Call Trace: [<c0105b24>] [<c0105c70>] [<d08c762f>] [<c01977e9>] [<c01d9d1a>]
[<c0195f5e>] [<d08cd856>] [<d08afe1e>] [<d08b09ed>] [<d08afc59>] [<d08b0a9d>]
[<c01081ca>] [<c0108378>] [<c010a7a8>] [<c01498a5>] [<c01351af>] [<c0135213>]
[<c0106d93>]
Code: 0f 0b 34 02 a2 d9 23 c0 58 8b 45 e8 c1 e0 05 05 00 e5 2c c0
>>EIP; c0114f83 <schedule+53/310> <=====
Trace; c0105b24 <__down+54/a0>
Trace; c0105c70 <__down_failed+8/c>
Trace; d08c762f <[usbserial]generic_read_bulk_callback+bf/220>
Trace; c01977e9 <n_tty_receive_buf+ac9/ae0>
Trace; c01d9d1a <pci_pool_free+1a/e0>
Trace; c0195f5e <flush_to_ldisc+de/f0>
Trace; d08cd856 <[ftdi_sio]ftdi_read_bulk_callback+426/4b0>
Trace; d08afe1e <[uhci]uhci_unlink_generic+15e/180>
Trace; d08b09ed <[uhci]uhci_call_completion+12d/1b0>
Trace; d08afc59 <[uhci]uhci_transfer_result+d9/140>
Trace; d08b0a9d <[uhci]uhci_finish_completion+2d/50>
Trace; c01081ca <handle_IRQ_event+3a/70>
Trace; c0108378 <do_IRQ+68/b0>
Trace; c010a7a8 <call_do_IRQ+5/d>
[...]
Code; c0114f83 <schedule+53/310>
00000000 <_EIP>:
Code; c0114f83 <schedule+53/310> <=====
0: 0f 0b ud2a <=====
etc.
<0>Kernel panic: Aiee, killing interrupt handler!
--
Peter Denison <peterd at marshadder dot uklinux dot net>
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