Re: QUESTION: Network hangs with BP6 and 2.4.x kernels, hardware

From: Roeland Th. Jansen (roel@grobbebol.xs4all.nl)
Date: Mon Jan 15 2001 - 09:36:15 EST

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On Fri, Jan 12, 2001 at 12:04:21PM -0800, Linus Torvalds wrote:
> Ok, so it's tentatively the IOAPIC disable/enable code. But it could
> obviously be something that just interacts with it, including just a
> timing issue (ie the _real_ bug might just be bad behaviour when
> changing IO-APIC state at the same time as an interrupt happens, and
> disable/enable-irq just happen to be the only things that do it at a
> high enough frequency that you can see the problem).

my BP6 with the patch frank sent me and the apic code at line 273 (or
so) defined as '1' and a flood ping :

Jan 14 19:56:19 grobbebol kernel: APIC error on CPU1: 02(02)
Jan 14 19:56:25 grobbebol kernel: APIC error on CPU1: 02(02)
Jan 14 19:58:10 grobbebol last message repeated 2 times
Jan 14 20:00:01 grobbebol kernel: APIC error on CPU1: 02(02)
Jan 14 20:01:11 grobbebol last message repeated 2 times
Jan 14 20:01:48 grobbebol kernel: APIC error on CPU1: 02(02)
Jan 14 20:01:59 grobbebol kernel: APIC error on CPU1: 02(08)
Jan 14 20:02:10 grobbebol kernel: APIC error on CPU1: 08(08)
Jan 14 20:02:39 grobbebol kernel: APIC error on CPU1: 08(02)
Jan 14 20:02:39 grobbebol kernel: unexpected IRQ trap at vector 8d
Jan 14 20:15:32 grobbebol kernel: APIC error on CPU1: 02(08)
[....]

ad the network is dead. however, no crashes seen during this.

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