[Bug 1430] New: SysFS oops when rmmod'ing uhci-hcd after resuming from suspend

From: Martin J. Bligh (mbligh_at_aracnet.com)
Date: 10/27/03

  • Next message: Martin J. Bligh: "[Bug 1431] New: Crash accessing /proc/ide/*/identify on promise 20265 (fasttrak bios not loaded)" 
    Date:	Mon, 27 Oct 2003 07:50:39 -0800
To: linux-kernel <linux-kernel@vger.kernel.org>

    http://bugme.osdl.org/show_bug.cgi?id=1430

               Summary: SysFS oops when rmmod'ing uhci-hcd after resuming from
                        suspend
        Kernel Version: 2.6.0-test9
                Status: NEW
              Severity: normal
                 Owner: mochel@osdl.org
             Submitter: felipe_alfaro@linuxmail.org

    Distribution:
    -------------
    Fedora Core Test 3.
    Nothing special with it, since the problems is reproducible by booting with
    "init=/bin/bash" kernel command line parameter.
     
    Hardware Environment:
    ---------------------
    Packard Bell Chrom@ laptop:
    Pentium III 700 Mhz
    Intel 440BX chipset
    Texas Instruments PCI4450 CardBus bridge
    ATI RAGE Mobility M1 AGP video card with 8MB of DRAM
    3Com 3CCFE575CT 10/100 CardBus NIC
    Microsoft Intellimouse Explorer USB mouse
     
    Please, see attached "lspci" file for more details.
     
    Software Environment:
    ---------------------
    Nothing special
     
    Problem Description:
    --------------------
    After resuming my laptop from APM suspend, running "rmmod uhci-hcd" causes the
    following oops:
     
    Unable to handle kernel NULL pointer dereference at virtual address 00000000
     printing eip:
    c017fba6
    *pde = 00000000
    Oops: 0000 [#1]
    CPU: 0
    EIP: 0060:[<c017fba6>] Not tainted
    EFLAGS: 00010292
    EIP is at sysfs_get_dentry+0x16/0x70
    eax: 00000000 ebx: cf885acc ecx: ffffffff edx: 00000000
    esi: cf8f8280 edi: 00000000 ebp: cf885c24 esp: cf54be38
    ds: 007b es: 007b ss: 0068
    Process rmmod (pid: 454, threadinfo=cf54a000 task=cf54d900)
    Stack: c015df9d cf54be54 00000000 00000000 c017fbf5 cf810580 cf885acc cf885c00
           c017fc2a cf8f8280 00000000 cf885acc d0879ec0 c01c33f8 cf8f8280 00000000
           cf885acc cf885ccc c01c3575 cf885acc cf885b28 cf885acc cf885ccc c01c244d
    Call Trace:
     [<c015df9d>] lookup_hash+0x1d/0x30
     [<c017fbf5>] sysfs_get_dentry+0x65/0x70
     [<c017fc2a>] sysfs_hash_and_remove+0x2a/0x7d
     [<c01c33f8>] device_release_driver+0x28/0x70
     [<c01c3575>] bus_remove_device+0x55/0xa0
     [<c01c244d>] device_del+0x5d/0xa0
     [<c01c24a3>] device_unregister+0x13/0x30
     [<d0863d28>] usb_disconnect+0xd8/0xf0 [usbcore]
     [<d086c119>] usb_hcd_pci_remove+0x89/0x180 [usbcore]
     [<c01a2acb>] pci_device_remove+0x3b/0x40
     [<c01c3436>] device_release_driver+0x66/0x70
     [<c01c346b>] driver_detach+0x2b/0x40
     [<c01c36ad>] bus_remove_driver+0x3d/0x80
     [<c01c3ab3>] driver_unregister+0x13/0x28
     [<c01a2ca6>] pci_unregister_driver+0x16/0x30
     [<d085506f>] uhci_hcd_cleanup+0xf/0x5e [uhci_hcd]
     [<c0130299>] sys_delete_module+0x139/0x1b0
     [<c0144000>] do_munmap+0x80/0x190
     [<c0109339>] sysenter_past_esp+0x52/0x71
     
    Code: f2 ae f7 d1 49 89 4c 24 0c 31 db 89 d7 49 83 f9 ff 74 24 8d
     
    Steps to reproduce:
    -------------------
    This problem can be always reproduced by performing the following steps:
     
    0. Make sure the Intellimouse USB mouse is plugged.
    1. Boot into 2.6.0-test9 with "init=/bin/bash"
    2. Run "apm -s"
    3. Let the system suspend, then resume it from suspension.
    4. On the command line, run "rmmod uhci-hcd"
    5. The previously described oops will be triggered.
     
    Additional information:
    -----------------------
    Please, see the attached "config" file for information on the configuration
    used to build the kernel.

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  • Next message: Martin J. Bligh: "[Bug 1431] New: Crash accessing /proc/ide/*/identify on promise 20265 (fasttrak bios not loaded)"

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