Messages in this thread |  | | Date | Fri, 12 Jan 2001 16:36:33 +0100 | From | Frank de Lange <> | Subject | Re: QUESTION: Network hangs with BP6 and 2.4.x kernels, hardware related? |
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On Fri, Jan 12, 2001 at 10:40:04PM +1100, Andrew Morton wrote: > Here is a debugging patch. Could you please apply this, > rebuild and: > > 1: Type ALT-SYSRQ-A when everything is good > 2: Type ALT-SYSRQ-A when everything is bad > 3: send the resulting logs.
OK, here's the results I get...
Before network hang ===================
print_PIC() printing PIC contents print_IO_APIC() testing the IO APIC.......................
.................................... done. print_all_local_APICs()
... APIC ID: 01000000 (1) ... APIC VERSION: 00040011 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000001000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000010000000000000000
... APIC ID: 00000000 (0) ... APIC VERSION: 00040011 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000010000000000000001000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000001000
NOTICE: results differ every time I hit ALT-SYSRQ-A. The '1' bit at 'row 11, col. 26' stays '1' no matter how many times I use the magic keys. The other '1' bits jump around a bit, or disappear alltogether. Also, the sequence in which the APICs appear in the dump sometimes differs (this example shows 1 first, then 0, other times you'd see 0 first, then 1)
After network hang ==================
print_PIC() printing PIC contents print_IO_APIC() testing the IO APIC.......................
.................................... done. print_all_local_APICs()
... APIC ID: 00000000 (0) ... APIC VERSION: 00040011 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000010000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000010000000000000000
... APIC ID: 01000000 (1) ... APIC VERSION: 00040011 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000001000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000000000000000000000 00000000000000010000000000000000
NOTICE: hmmm... see, now that '1' bit at row 11, col. 26 for APIC 0 which was '1' before has turned to '0'. It will stay '0' no matter how many times I hit the magic keys... It seems to have been replaced by the '1' bit at row 11, col. 10, since that bit stays '1' no matter how many magic I throw at it...
Hope this helps... If you need more, let me know...
Cheers//Frank -- WWWWW _______________________ ## o o\ / Frank de Lange \ }# \| / \ ##---# _/ <Hacker for Hire> \ #### \ +31-320-252965 / \ frank@unternet.org / ------------------------- [ "Omnis enim res, quae dando non deficit, dum habetur et non datur, nondum habetur, quomodo habenda est." ] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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