2.6.5-rc2-mm4 (and 3) IRQ problem

From: Fabio Coatti (cova_at_ferrara.linux.it)
Date: 03/27/04

  • Next message: Carl Spalletta: "Re: locking pages into a processes` working set" 
    To: Linux Kernel <linux-kernel@vger.kernel.org>
Date:	Sat, 27 Mar 2004 19:13:09 +0100

    I'm seeing a problem with ethernet driver (e1000) on 2.6.5-rc2-mm4, here the
    syslog excerpt:

    ========================
    Mar 27 18:39:23 kefk kernel: e1000: eth0 NIC Link is Up 100 Mbps Full Duplex
    Mar 27 18:39:23 kefk kernel: irq 18: nobody cared!
    Mar 27 18:39:23 kefk kernel: Call Trace:
    Mar 27 18:39:23 kefk kernel: [<c010882b>] __report_bad_irq+0x2a/0x8b
    Mar 27 18:39:23 kefk kernel: [<c0108937>] note_interrupt+0x91/0xaf
    Mar 27 18:39:23 kefk kernel: [<c0108c4a>] do_IRQ+0x151/0x19a
    Mar 27 18:39:23 kefk kernel: [<c034b4c8>] common_interrupt+0x18/0x20
    Mar 27 18:39:23 kefk kernel: [<c0104c2e>] default_idle+0x0/0x2c
    Mar 27 18:39:23 kefk kernel: [<c0104c57>] default_idle+0x29/0x2c
    Mar 27 18:39:23 kefk kernel: [<c0104cbb>] cpu_idle+0x2e/0x3c
    Mar 27 18:39:23 kefk kernel: [<c0430a02>] start_kernel+0x196/0x1c5
    Mar 27 18:39:23 kefk kernel: [<c0430436>] unknown_bootoption+0x0/0x126
    Mar 27 18:39:23 kefk kernel:
    Mar 27 18:39:23 kefk kernel: handlers:
    Mar 27 18:39:23 kefk kernel: [<c02a7b0b>] (ata_interrupt+0x0/0x173)
    Mar 27 18:39:23 kefk kernel: [<c02d2f9c>] (usb_hcd_irq+0x0/0x67)
    Mar 27 18:39:23 kefk kernel: Disabling IRQ #18
    ===========================

    I've seen the same problem on -mm3, but that version has other problems that
    prevents me to do more tests.

    A similar issue was present in earlier kernel when I've tried to use SATA
    driver compiled as modules, same behaviour, solved by compiling SATA driver
    as built-in, not as module. (I've both normal ATA and SATA controllers active
    on my mb)

    under 2.6.5-rc2-mm1, this is the output of cat /proc/interrupts; as you can
    see there is also a nvidia module, but the problem arises event without that
    module. irq 18 is shared between eth0,libata and uhci_hcd.

    [root@kefk root]# cat /proc/interrupts
               CPU0 CPU1
      0: 1002506 0 IO-APIC-edge timer
      1: 4722 0 IO-APIC-edge i8042
      2: 0 0 XT-PIC cascade
      9: 0 0 IO-APIC-level acpi
     12: 8826 0 IO-APIC-edge i8042
     14: 11920 0 IO-APIC-edge ide0
     15: 23 0 IO-APIC-edge ide1
     16: 278123 0 IO-APIC-level uhci_hcd, uhci_hcd, nvidia
     17: 2337 0 IO-APIC-level Intel ICH5
     18: 56240 0 IO-APIC-level libata, uhci_hcd, eth0
     19: 55 0 IO-APIC-level uhci_hcd
     22: 279 0 IO-APIC-level aic7xxx
     23: 0 0 IO-APIC-level ehci_hcd
    NMI: 0 0
    LOC: 1002427 1002439
    ERR: 0
    MIS: 0

    The MB is a ABIT IC7-G (i875p) ICH5, the kernel is compiled with SMP/SMT
    support active.

    Please let me know if more details are needed.

    A small question, not related to the above issue:
    reverting 4k-stacks-always-on.patch can lead to problems or it's safe? I've to
    run nvidia binary driver so I've to use 8k instead of 4k; it would be better
    (for my standpoint) to have the possibility to disable 4k from config, but to
    do so I've to revert this patch. Apart from losing time to do a patch -R :),
    using 8k can be a problem?

    Many thanks for any answer. 

    -- 
Fabio Coatti       http://www.ferrara.linux.it/members/cova     
Ferrara Linux Users Group           http://ferrara.linux.it
GnuPG fp:9765 A5B6 6843 17BC A646  BE8C FA56 373A 5374 C703
Old SysOps never die... they simply forget their password.
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  • Next message: Carl Spalletta: "Re: locking pages into a processes` working set"

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