>
http://bugzilla.kernel.org/show_bug.cgi?id=12876
>
> Summary: irq 18: nobody cared after down-ing an e1000 interface
> Product: Drivers
> Version: 2.5
> KernelVersion: 2.6.29-0.237.rc7.git4.fc11.i586
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Network
> AssignedTo:
drivers_network@kernel-bugs.osdl.org
> ReportedBy:
lkundrak@v3.sk
>
>
> Distribution: Fedora
> Hardware Environment:
>
http://smolts.org/show?uuid=pub_63f33868-db84-4452-bb6d-eeb440ee5449
>
> Problem Description:
>
> I get the following OOPS when I down the e1000 network interface:
>
> irq 18: nobody cared (try booting with the "irqpoll" option)
> Pid: 9014, comm: udevd Tainted: G W 2.6.29-0.237.rc7.git4.fc11.i586 #1
> Call Trace:
> [<c0471f2b>] __report_bad_irq+0x33/0x74
> [<c047205e>] note_interrupt+0xf2/0x150
> [<c04711e0>] ? handle_IRQ_event+0x4f/0x58
> [<c04725e8>] handle_fasteoi_irq+0x94/0xb7
> [<c0472554>] ? handle_fasteoi_irq+0x0/0xb7
> <IRQ> [<c04045ac>] ? common_interrupt+0x2c/0x40
> handlers:
> [<c05f3cb6>] (ata_sff_interrupt+0x0/0xb1)
> [<c06079ec>] (usb_hcd_irq+0x0/0xa3)
> Disabling IRQ #18
>
> As you can see, the IRQ 18 is shared with ata_sff and usb_hcd.
>
> I've tried to comment out e1000_free_irq() call from e1000_close() and added a
> printk() to e1000_intr(). After that, the problem didn't occur, but I've not
> seen the output of the printk in e1000_intr() (It was visible while the
> interface was up), as if it weren't called. Seems like the way shared
> interrupts work is beyond my understanding.
>
