2004-03-31 09:26:15

by Ralf Hildebrandt

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Subject: rmmod uhci-hcd hangs eternally (linux-2.6.5-rc2-bk8)

Hi!

When using linux-2.6.5-rc2-bk8, "rmmod uhci-hcd" hangs forever. Even
when trying a reboot, the machine won't reboot.

This happens with linux-2.6.5-rc2-bk8 on this hardware:

# lspci
0000:00:00.0 Host bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
0000:00:01.0 PCI bridge: Intel Corp. 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03)
0000:00:04.0 ISA bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
0000:00:04.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
0000:00:04.2 USB Controller: Intel Corp. 82371AB/EB/MB PIIX4 USB (rev 01)

from dmesg:
drivers/usb/core/usb.c: registered new driver usbfs
drivers/usb/core/usb.c: registered new driver hub
USB Universal Host Controller Interface driver v2.2
uhci_hcd 0000:00:04.2: UHCI Host Controller
uhci_hcd 0000:00:04.2: irq 5, io base 0000d400
uhci_hcd 0000:00:04.2: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usb 1-1: new full speed USB device using address 2

and with this hardware as well (also kernel 2.6.5-rc2-bk8):

# lspci
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT82C598 [Apollo MVP3] (rev 04)
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP]
0000:00:07.0 ISA bridge: VIA Technologies, Inc. VT82C596 ISA [Mobile South] (rev 23)
0000:00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C/VT8235 PIPC Bus Master IDE (rev 10)
0000:00:07.2 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 11)

from dmesg:
USB Universal Host Controller Interface driver v2.2
uhci_hcd 0000:00:07.2: VIA Technologies, Inc. USB
uhci_hcd 0000:00:07.2: irq 9, io base 0000d400
uhci_hcd 0000:00:07.2: new USB bus registered, assigned bus number 1
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected


--
Ralf Hildebrandt (Im Auftrag des Referat V a) [email protected]
Charite - Universit?tsmedizin Berlin Tel. +49 (0)30-450 570-155
Gemeinsame Einrichtung von FU- und HU-Berlin Fax. +49 (0)30-450 570-916
IT-Zentrum Standort Campus Mitte AIM. ralfpostfix


2004-03-31 17:02:54

by Denis Vlasenko

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Subject: Re: rmmod uhci-hcd hangs eternally (linux-2.6.5-rc2-bk8)

On Wednesday 31 March 2004 11:25, Ralf Hildebrandt wrote:
> Hi!
>
> When using linux-2.6.5-rc2-bk8, "rmmod uhci-hcd" hangs forever. Even

Produce a stacktrace of it: SysRq-T, look into syslog,
cut and mail relevant part.
--
vda

2004-03-31 19:42:22

by Bongani Hlope

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Subject: Re: rmmod uhci-hcd hangs eternally (linux-2.6.5-rc2-bk8)

On Wed, 31 Mar 2004 11:25:42 +0200
Ralf Hildebrandt <[email protected]> wrote:

> Hi!
>
> When using linux-2.6.5-rc2-bk8, "rmmod uhci-hcd" hangs forever. Even
> when trying a reboot, the machine won't reboot.
>
> This happens with linux-2.6.5-rc2-bk8 on this hardware:
>

The same happens on 2.6.5-rc2-mm4, when I rmmod bttv it hangs, id did a cat /proc/<pid>/wchan and found that it was on 12c_release (exiting WindowMaker caused a hard-lock on my PC)


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