>From David Brownell on Tuesday, 18 December, 2001:
>Curious, it BUG()s in the scheduler with a somewhat odd
>looking stack. What's at line 551 in that kernel? This could
>be a non-USB problem...
Line 551 (I'm at work, not by my laptop that's having the difficulty)
is a check in schedule() to make sure we're not in an interrupt,
if I read it correctly. IIRC, it reads
if(unlikely(in_interrup())){
printk "Scheduling interrupt";
BUG();
}
NOTE: this is very roughly paraphrased.
Also, I might have made errors in copying the addresses, since I
had to type it all in manually. I can cause it to crash again
tonight (is very easy. Plug in the cable to the cablemodem, run
pump -i eth1) But it seems to jive with the "BUG at sched.c 551"
bit.
>> kernel BUG at sched.c 551!
>> ...
>> >>EIP; c01125b0 <schedule+6c/31c> <=====
>> Trace; c01f404e <sohci_submit_urb+4f6/510>
>> Trace; c011251a <schedule_timeout+72/90>
>> Trace; c011245c <process_timeout+0/4c>
>> ...
>> Code; c01125b0 <schedule+6c/31c>
>> 00000000 <_EIP>:
>> Code; c01125b0 <schedule+6c/31c> <=====
>> 0: 0f 0b ud2a <=====
>> Code; c01125b2 <schedule+6e/31c>
>> 2: 83 c4 08 add $0x8,%esp
>> Code; c01125b4 <schedule+70/31c>
>> 5: 0b 4d f4 or 0xfffffff4(%ebp),%ecx
>> Code; c01125b8 <schedule+74/31c>
>> 8: c1 e1 05 shl $0x5,%ecx
>> Code; c01125ba <schedule+76/31c>
>> b: 81 c1 40 b5 2e c0 add $0xc02eb540,%ecx
>> Code; c01125c0 <schedule+7c/31c>
>> 11: 89 4d fc mov %ecx,0xfffffffc(%ebp)
>>
>> <0>Kernel panic: Aiee, killing interrupt handler!
>>
>
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