John Lindgren, could you please confirm this issue exists with the
latest development release of Ubuntu? ISO images are available from
http://cdimage.ubuntu.com/daily-live/current/ . If the issue remains,
could you please run the following command in the development release
from a Terminal (Applications-Accessories-Terminal), as it will
automatically gather and attach updated debug information to this
report:
apport-collect -p linux replace-with-bug-number
Also, could you please test the latest upstream kernel available following
https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional
upstream developers to examine the issue. Please do not test the daily folder,
but the one all the way at the bottom. Once you've tested the upstream kernel,
please comment on which kernel version specifically you tested. If this bug is
fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER
where VERSION-NUMBER is the version number of the kernel you tested. For
example:
kernel-fixed-upstream-v3.11-rc4
This can be done by clicking on the yellow circle with a black pencil icon next
to the word Tags located at the bottom of the bug description. As well, please
remove the tag:
needs-upstream-testing
If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER
As well, please remove the tag:
needs-upstream-testing
If you are unable to test the mainline kernel, please comment as to why
specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER
Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.
** Tags added: needs-kernel-logs needs-upstream-testing regression-
potential
** Changed in: linux (Ubuntu)
Status: Confirmed = Incomplete
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https://bugs.launchpad.net/bugs/1073688
Title:
Kernel crash when unplugging ExpressCard-to-USB adaptor
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
This is a somewhat complex problem and seems to be the combination of
two separate bugs, one present in 12.04 (kernel 3.2.0-32-generic) and
another new in 12.10 (kernel 3.5.0-17-generic). The problem is seen
when unplugging an Encore Electronics ENPUH-302 ExpressCard-to-USB
adaptor, with a generic USB thumb drive attached, from a 64-bit Intel
Atom system.
On 12.04, I see this message logged 20 seconds after removing the
card: xhci_hcd :0b:00.0: Timeout while waiting for configure
endpoint command. If I plug the card in again during that 20
seconds, it is not recognized (dmesg says only pciehp
:00:1c.3:pcie04: Card present on Slot(35)).
On 12.10, the problem is worse. The same message (Timeout while
waiting ...) is logged 20 seconds after removing the card. If I plug
the card in again during that 20 seconds, I see an additional message
that was not printed in 12.04: pciehp :00:1c.3:pcie04: Device
:0b:00.0 already exists at :0b:00, cannot hot-add. If I then
unplug the card, the kernel dumps a crash report (a page fault
triggered by pci_stop_bus_device()) to the screen and the system
freezes.
Attached are the following logs:
12.04/dmesg-boot.log: dmesg output when booting system with (Ubuntu 12.04)
12.04/dmesg-insert.log: dmesg output when plugging ExpressCard in-out-in-out
(Ubuntu 12.04)
12.04/lspci-out.log: lspci -tv output without ExpressCard inserted (Ubuntu
12.04)
12.04/lspci-in.log: lspci -tv output with ExpressCard inserted (Ubuntu
12.04)
12.10/dmesg-boot.log: dmesg output when booting system with (Ubuntu 12.10)
12.10/dmesg-insert.log: dmesg output when plugging ExpressCard in-out-in
(Ubuntu 12.10)
12.10/lspci-out.log: lspci -tv output without ExpressCard inserted (Ubuntu
12.10)
12.10/lspci-in.log: lspci -tv output with ExpressCard inserted (Ubuntu
12.10)
12.10/kernel-dump.png: snapshot of monitor showing kernel crash dump (Ubuntu
12.10)
The testing system is the following Kontron COM on a custom board:
http://us.kontron.com/products/computeronmodules/com+express/com+express+compact/comecpv2.html
Let me know if you need any more info.
John Lindgren
---
Architecture: amd64
DistroRelease: Ubuntu 12.10
MarkForUpload: True
Package: linux (not installed)
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
Uname: Linux 3.5.0-17-generic x86_64
UserGroups:
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