netdev - Re: troubles with r8169

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Date:	Mon, 13 Aug 2007 00:58:51 +0400
From:	Vadim Dyadkin <dyadkin@....pnpi.spb.ru>
To:	Alistair John Strachan <alistair@...zero.co.uk>
CC:	Robert Hancock <hancockr@...w.ca>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: troubles with r8169

Alistair John Strachan пишет:
>> Thank for your answer. This problem never shows up if I use only nvidia
>> driver (the work without network), or if I use only r8169 (without
>> x.org). If I use both of them I have the hang. Usually the hang appears
>> if OpenGL is used or network rate is maximal. I tested this regimes many
>> times before.
>
> If you haven't already, I'd drop linux-bugs@...dia.com an email to see if they 
> have any insight. 

I haven't done it yet. I'm going to do it.

> Not that this can't be a kernel bug, just that it's a bit 
> difficult for kernel developers to debug when you're using a driver for which 
> we don't have the sources.
>
> As for changing the IRQ assignments, I don't have any immediate suggestions. I 
> notice that this laptop has a dual core processor, so I'm guessing disabling 
> APIC isn't an option. Have you tried that anyway, just to see if the IRQ 
> assignment differs?

If I've correctly understood your suggestion I should load kernel with
'noapic' option. In that case the situation even worse:
******************************
           CPU0       CPU1
  0:     106543      11922    XT-PIC-XT        timer
  1:         53          8    XT-PIC-XT        i8042
  2:          0          0    XT-PIC-XT        cascade
  5:          0          0    XT-PIC-XT        sdhci:slot0
  7:      14250     126092    XT-PIC-XT        ehci_hcd:usb2
  8:          2          0    XT-PIC-XT        rtc
  9:       1168        190    XT-PIC-XT        acpi
 10:        338        181    XT-PIC-XT        HDA Intel
 11:       7167       1052    XT-PIC-XT        ohci_hcd:usb1, yenta,
eth0, nvidia
 12:        123          9    XT-PIC-XT        i8042
 14:         19         32    XT-PIC-XT        ide0
 15:      10936       1112    XT-PIC-XT        ide1
NMI:          0          0
LOC:      11921     106401
ERR:      41370
MIS:          0
*******************************
Now, pcmcia and usb 1.1 share the same IRQ.

Plus, dmesg says:
*********************************
irq 7: nobody cared (try booting with the "irqpoll" option)
 [<c013f9c4>] __report_bad_irq+0x24/0x80
 [<c013fc46>] note_interrupt+0x226/0x260
 [<f885d0bb>] usb_hcd_irq+0x2b/0x60 [usbcore]
 [<c013eed5>] handle_IRQ_event+0x25/0x50
 [<c01407f3>] handle_level_irq+0x93/0x100
 [<c010529b>] do_IRQ+0x3b/0x70
 [<c010293e>] sys_sigreturn+0xce/0xe0
 [<c010341b>] common_interrupt+0x23/0x28
 =======================
handlers:
[<f885d090>] (usb_hcd_irq+0x0/0x60 [usbcore])
Disabling IRQ #7
******************************

Vadim

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