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Bug#682504: Kernel panic booting live iso hybrid image as USB: quirk_usb_early_handoff

Package: linux-image-3.2.0-3-686-pae
Version: 3.2.21-3
Severity: normal

I built a fresh sid live i386 image using no special customization (just
includes kde-full builtin package list) and 686-pae kernel. I cannot
boot this image on an Atom N450 system due to the following kernel
panic (painstakingly hand-copied from the what I could see of the
display, minus timestamps which start at 3.025619 and end at 3.864838):

sd 4:0:0:0: [sdb] No Caching mode page present
sd 4:0:0:0: [sdb] Assuming drive cache: write through
sd 4:0:0:0: [sdb] Attached SCSI removable disk
usb 1-6: New USB device found, idVendor=13d3, idProduct=5702
usb 1-6: New USB device strings: Mfr=3, Product=1, SerialNumber=2
usb 1-6: Product: USB2.0 UVC VGA WebCam
usb 1-6: Manufacturer: Azurewave
usb 1-6: SerialNumber: 200901010001
busybox: sending ioctl 5310 to a partition!
busybox: sending ioctl 5310 to a partition!
aufs: module is from the staging directory, the quality is unknown, you have been warned.
aufs 3.2-20120312
loop: module loaded
squashfs: version 4.0 (2009/01/31) Phillip Lougher
Kernel panic - not syncing: Attempted to kill init!
Pid: 1, comm: init Tainted: G         C   3.2.0-3-686-pae #1
Call Trace:
 [<c12bb01f>] ? panic+0x4d/0x144
 [<c103aa94>] ? do_exit+0x76/0x5f7
 [<c103b217>] ? do_group_exit+0x5c/0x7f
 [<c103b24b>] ? sys_exit_group+0x11/0x11
 [<c12bfa14>] ? syscall_call+0x7/0xb
 [<c12b0000>] ? quirk_usb_early_handoff+0x4a9/0x522

Prior to this test, I had my USB mouse plugged in. It was the last device detected. I unplugged this device to see if it would change the behaviour, so in the text captured above, the webcam is now last. As you can see the behaviour did not change; it still panics. Unfortunately I can't disable the camera in the BIOS so I was unable to see what would happen if that, too, were unplugged (short of disassembling the unit and physically unplugging it inside, which I would be willing to do if it would help debug, but somehow I doubt it).

Please let me know if there is further info I could gather for you.


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