unload pccard network driver locks machine

[Bret Comstock Waldow]

Discovered while troubleshooting lockup when suspending a Thinkpad T21 laptop. This is also confirmed on a Fujitsu ST3500 tablet pc.

Ejecting several pcmcia network cards immediately locks the machine. If viewing the (Ctrl-Alt-Fn) consoles at the time, a kernel panic shows.

Suspend attempts to 'eject' the pcmcia cards, causing the lockup. Attempting to physically remove the cards causes the lockup.

Attempting as root to 'rmmod' remove the driver causes the lockup. Only a physical power reset will recover.

None of these problems occur with a 3Com AirConnect 3CRWE737A pcmcia card, which uses the orinoco drivers. Cardbus, perhaps?

The cards that cause the problem are:
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8185 IEEE 802.11a/b/g Wireless LAN Controller (rev 20)
        Subsystem: Realtek Semiconductor Co., Ltd. RTL-8185 IEEE 802.11a/b/g Wireless LAN Controller
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (8000ns min, 16000ns max), Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 11
        Region 0: I/O ports at 1400 [size=256]
        Region 1: Memory at 34000000 (32-bit, non-prefetchable) [size=1K]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1+,D2+,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

06:00.0 Network controller: RaLink RT2600 802.11 MIMO
        Subsystem: RaLink Unknown device 2661
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64, Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at 3c000000 (32-bit, non-prefetchable) [size=32K]
        Capabilities: [40] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

Attempting 'rmmod rtl8180' with the RTL-8185 crashes the system, or 'rmmod rt61pci' with the RaLink RT2600.

Both cards use 'native' linux drivers. I don't know which package this belongs to - what do the cards have in common?
root@krishna:~# lsb_release -rd
Description: Ubuntu 8.04.2
Release: 8.04
'lsmod' with both cards inserted is attached.

[Peter Antoniac (pan1nx)]

Change the package to linux

[Peter Antoniac (pan1nx)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage . I have classified this bug as a bug in linux.

For future reference you might be interested to know that a lot of applications have bug reporting functionality built in to them. This can be accessed via the Report a Problem option in the Help menu for the application with which you are having an issue. You can learn more about this feature at https://wiki.ubuntu.com/ReportingBugs.

[Jim Lieb (lieb)]

Can you also confirm this issue exists with the most recent Karmic Koala 9.10 Alpha release? ISO CD images are available at http://cdimage.ubuntu.com/releases/karmic/ . If the issue remains with Karmic it would be great to then also test the latest upstream mainline kernel available. This will allow additional upstream developers to examine this issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Thanks in advance.

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

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