[Bugme-new] [Bug 10997] New: Module ehci_hcd behaves nasty on device use and/or device removal.

Fri Jun 27 16:54:09 PDT 2008

http://bugzilla.kernel.org/show_bug.cgi?id=10997

           Summary: Module ehci_hcd behaves nasty on device use and/or
                    device removal.
           Product: Drivers
           Version: 2.5
     KernelVersion: 2.6.26-rc8 (any version >= 2.6.25)
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: USB
        AssignedTo: greg at kroah.com
        ReportedBy: valentin.quequet at orange.fr
                CC: valentin.quequet at orange.fr

Latest working kernel version: 2.6.24.7
Earliest failing kernel version: 2.6.25.6
Distribution: Debian over PRISTINE Linux 2.6.26-rc8
Hardware Environment:

Linux debian 2.6.26-rc8-custom-0001 #1 SMP Fri Jun 27 20:45:19 CEST 2008 x86_64
GNU/Linux

Software Environment:

Linux debian 2.6.26-rc8-custom-0001 #1 SMP Fri Jun 27 20:45:19 CEST 2008 x86_64
GNU/Linux under Debian Lenny/Sid.

Problem Description:

Hello ;-)

Troubles (Oopses) often (see details after Oopses below) happen when I try to
scan a document via S.A.N.E. with my combo Printer/Scanner Canon PIXMA MP150.

I always have at most 1 scanner plugged (the above mentionned).

The same trouble happens when I type the command 'scanimage -T' which is a test
consisting effectively in scanning a small part of the document.

Contrary to 'scanimage -T', the command 'scanimage -L', which lists available
scanners (1 scanner here if plugged and ON), initiate dialogue with the scanner
and report it as available for susequent scanning operations.

Example of an unsuccessful scanning/test attempt, where module ehci_hcd is
loaded:

Jun 27 22:39:10 debian kernel: [  245.365633] usb 2-5: unlink
qh128-0001/ffff81003e6e9320 start 127 [2/0 us]
Jun 27 22:39:10 debian kernel: [  245.365740] ehci_hcd 0000:00:0b.1: reused qh
ffff81003e6e9320 schedule
Jun 27 22:39:10 debian kernel: [  245.365746] usb 2-5: link
qh128-0001/ffff81003e6e9320 start 127 [2/0 us]
Jun 27 22:39:10 debian kernel: [  245.820940] usb 2-5: unlink
qh128-0001/ffff81003e6e9320 start 127 [2/0 us]
Jun 27 22:39:10 debian kernel: [  245.822675] ehci_hcd 0000:00:0b.1: HC died;
cleaning up
Jun 27 22:39:10 debian kernel: [  245.824940] hub 2-0:1.0: state 0 ports 8 chg
0000 evt fe00
Jun 27 22:39:10 debian kernel: [  245.824940] usb 2-5: USB disconnect, address
4
Jun 27 22:39:10 debian kernel: [  245.824940] usb 2-5: unregistering device
Jun 27 22:39:10 debian kernel: [  245.824940] usb 2-5: usb_disable_device
nuking all URBs
Jun 27 22:39:10 debian kernel: [  245.824940] usb 2-5: unregistering interface
2-5:1.0
Jun 27 22:39:10 debian kernel: [  245.824940] PM: Removing info for usb:2-5:1.0

I never get to scan a document with module ehci_hcd loaded.

If I power off my scanner while ehci_hcd is loaded, I get that:

Jun 27 22:40:48 debian kernel: [  342.999039] irq 7: nobody cared (try booting
with the "irqpoll" option)
Jun 27 22:40:48 debian kernel: [  342.999358] Pid: 0, comm: swapper Not tainted
2.6.26-rc8-custom-0001 #1
Jun 27 22:40:48 debian kernel: [  342.999533] 
Jun 27 22:40:48 debian kernel: [  342.999534] Call Trace:
Jun 27 22:40:48 debian kernel: [  342.999868]  <IRQ>  [<ffffffff8026bb3b>]
__report_bad_irq+0x30/0x72
Jun 27 22:40:48 debian kernel: [  343.000084]  [<ffffffff8026bd68>]
note_interrupt+0x1eb/0x253
Jun 27 22:40:48 debian kernel: [  343.000262]  [<ffffffff8026c429>]
handle_fasteoi_irq+0xa5/0xc8
Jun 27 22:40:48 debian kernel: [  343.000440]  [<ffffffff8020ec6a>]
do_IRQ+0xf2/0x160
Jun 27 22:40:48 debian kernel: [  343.000612]  [<ffffffff8020a000>]
default_idle+0x0/0x3b
Jun 27 22:40:48 debian kernel: [  343.000787]  [<ffffffff8020c331>]
ret_from_intr+0x0/0xa
Jun 27 22:40:48 debian kernel: [  343.000959]  <EOI>  [<ffffffff8020a000>]
default_idle+0x0/0x3b
Jun 27 22:40:48 debian kernel: [  343.001162]  [<ffffffff8020a027>]
default_idle+0x27/0x3b
Jun 27 22:40:48 debian kernel: [  343.001337]  [<ffffffff8020afeb>]
cpu_idle+0x77/0xbf
Jun 27 22:40:48 debian kernel: [  343.001518] 
Jun 27 22:40:48 debian kernel: [  343.001685] handlers:
Jun 27 22:40:48 debian kernel: [  343.001853] [<ffffffff80373b82>]
(usb_hcd_irq+0x0/0x58)
Jun 27 22:40:48 debian kernel: [  343.002078] Disabling IRQ #7

I even sometimes get this later Oops when I just try to scan a document (or
test with 'scanimage -T').

Steps to reproduce:

When ehci_hcd is NOT loaded, then both 'scanimage -L' and 'scanimage -T' ALWAYS
SUCCEED at dialoging with the scanner.

When ehci_hcd is loaded, then 'scanimage -T' ALWAYS FAILS, outputting Oopses or
saying (if already oopsed) that there is no scanner.

When ehci_hcd is loaded, then 'scanimage -L' SUCCEED ONLY IF there has been no
Oopses (of the 2 sorts described above).

More information:

    I enabled some debugging/logging facilities at .config time for the purpose
of this report.
    Troubles showed even without those options anyway.
    Troubles equally showed with kernel versions >= 2.6.25.6 
    Troubles did not show with kernel version == 2.6.24.7 

    (syslog, .config, ...) on my WEB site:
        http://pagesperso-orange.fr/mandolosse/

    Initial report against Debian-packaged kernel here:
        http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=487725

With hope my report will prove useful.

regards
Valentin QUEQUET

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