Public bug reported:
I have a USB 3G modem:
Bus 006 Device 002: ID 1199:6813 Sierra Wireless, Inc.
The first time I tried to use it under 2.6.31-4.23, I got a flood of
these WARNINGs followed by a hard freeze (no mouse cursor movement, had
to hard power cycle the system).
I'll attach a kern.log showing the full sequence from resume through the
point where it hung.
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be
restarted.
Architecture: amd64
Date: Sun Aug 2 08:58:16 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=bc555036-0252-42e8-804b-b34dc22bbcd4
MachineType: LENOVO 6465CTO
Package: linux-image-2.6.31-4-generic 2.6.31-4.23
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-4-generic
root=UUID=305dde78-d20a-4248-aaf4-09447b7c5791 ro quiet splash
ProcVersionSignature: Ubuntu 2.6.31-4.23-generic
RelatedPackageVersions: linux-backports-modules-2.6.31-4-generic N/A
SourcePackage: linux
Tags: kernel-oops
Title: WARNING: at
/build/buildd/linux-2.6.31/drivers/usb/serial/usb-serial.c:374
serial_write+0xb9/0xc0 [usbserial]()
Uname: Linux 2.6.31-4-generic x86_64
dmi.bios.date: 01/21/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETB0WW (2.10 )
dmi.board.name: 6465CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr7LETB0WW(2.10):bd01/21/2008:svnLENOVO:pn6465CTO:pvrThinkPadT61:rvnLENOVO:rn6465CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6465CTO
dmi.product.version: ThinkPad T61
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-kerneloops kernel-oops
--
System freeze after WARNING: at
/build/buildd/linux-2.6.31/drivers/usb/serial/usb-serial.c:374
serial_write+0xb9/0xc0 [usbserial]()
https://bugs.launchpad.net/bugs/407939
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