WARNING: at /build/buildd/linux-2.6.31/drivers/usb/serial/usb-serial.c:422 serial_unthrottle+0x77/0x80()

[Amit Kucheria]

Oops in dmesg that triggered kerneloops.

Possibly related to the use of minicom on a USB-serial port. I was using it as a console for some ARM debugging.

ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: i386
Date: Wed Jul 22 10:11:10 2009
DistroRelease: Ubuntu 9.10
Failure: oops
HibernationDevice: RESUME=UUID=3efaeecd-bcac-4a97-9b56-134b3d30c9bc
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
Package: linux-image-2.6.31-3-generic 2.6.31-3.19
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-3-generic root=UUID=0588dda8-e84e-41f8-a9fa-65125c1befaa ro crashkernel=384M-2G:64M,2G-:128M quiet splash
ProcVersionSignature: Ubuntu 2.6.31-3.19-generic
RelatedPackageVersions: linux-backports-modules-2.6.31-3-generic N/A
SourcePackage: linux
Tags: kernel-oops
Title: WARNING: at /build/buildd/linux-2.6.31/drivers/usb/serial/usb-serial.c:422 serial_unthrottle+0x77/0x80()
Uname: Linux 2.6.31-3-generic i686
dmi.bios.date: 05/08/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: SDBLI944.86P
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: To be filled by O.E.M.
dmi.board.vendor: To be filled by O.E.M.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrSDBLI944.86P:bd05/08/2007:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.

[larytet (larytet-48904418)]

In karmic

[607126.428700] ftdi_sio ttyUSB2: FTDI USB Serial Device converter now disconnected from ttyUSB2
[607126.428713] ftdi_sio 2-5:1.0: device disconnected
[607126.428790] ftdi_sio ttyUSB3: FTDI USB Serial Device converter now disconnected from ttyUSB3
[607126.428796] ftdi_sio 2-5:1.1: device disconnected
[607126.428858] ftdi_sio ttyUSB4: FTDI USB Serial Device converter now disconnected from ttyUSB4
[607126.428865] ftdi_sio 2-5:1.2: device disconnected
[607126.428925] ftdi_sio ttyUSB5: FTDI USB Serial Device converter now disconnected from ttyUSB5
[607126.428932] ftdi_sio 2-5:1.3: device disconnected
[607130.172016] usb 2-5: new high speed USB device using ehci_hcd and address 119
[607130.308790] usb 2-5: configuration #1 chosen from 1 choice
[607130.310606] ftdi_sio 2-5:1.0: FTDI USB Serial Device converter detected
[607130.310623] usb 2-5: Detected FT4232H
[607130.310625] usb 2-5: Number of endpoints 2
[607130.310626] usb 2-5: Endpoint 1 MaxPacketSize 512
[607130.310628] usb 2-5: Endpoint 2 MaxPacketSize 512
[607130.310629] usb 2-5: Setting MaxPacketSize 512
[607130.312986] usb 2-5: FTDI USB Serial Device converter now attached to ttyUSB2
[607130.315464] ftdi_sio 2-5:1.1: FTDI USB Serial Device converter detected
[607130.315481] usb 2-5: Detected FT4232H
[607130.315482] usb 2-5: Number of endpoints 2
[607130.315484] usb 2-5: Endpoint 1 MaxPacketSize 512
[607130.315485] usb 2-5: Endpoint 2 MaxPacketSize 512
[607130.315487] usb 2-5: Setting MaxPacketSize 512
[607130.315827] usb 2-5: FTDI USB Serial Device converter now attached to ttyUSB3
[607130.316782] ftdi_sio 2-5:1.2: FTDI USB Serial Device converter detected
[607130.316795] usb 2-5: Detected FT4232H
[607130.316797] usb 2-5: Number of endpoints 2
[607130.316798] usb 2-5: Endpoint 1 MaxPacketSize 512
[607130.316800] usb 2-5: Endpoint 2 MaxPacketSize 512
[607130.316801] usb 2-5: Setting MaxPacketSize 512
[607130.316967] usb 2-5: FTDI USB Serial Device converter now attached to ttyUSB4
[607130.317240] ftdi_sio 2-5:1.3: FTDI USB Serial Device converter detected
[607130.317254] usb 2-5: Detected FT4232H
[607130.317255] usb 2-5: Number of endpoints 2
[607130.317257] usb 2-5: Endpoint 1 MaxPacketSize 512
[607130.317258] usb 2-5: Endpoint 2 MaxPacketSize 512
[607130.317259] usb 2-5: Setting MaxPacketSize 512
[607130.318576] usb 2-5: FTDI USB Serial Device converter now attached to ttyUSB5
[607395.864796] ------------[ cut here ]------------
[607395.864805] WARNING: at /build/buildd/linux-2.6.31/drivers/usb/serial/usb-serial.c:447 serial_unthrottle+0x76/0x80 [usbserial]()
[607395.864807] Hardware name: OptiPlex 960
[607395.864809] Modules linked in: ftdi_sio usbserial nls_iso8859_1 vfat fat usb_storage nls_cp437 nls_utf8 cifs binfmt_misc vboxnetflt vboxnetadp vboxdrv dahdi_transcode dahdi_dummy dahdi crc_ccitt snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq iptable_filter ppdev lp snd_timer psmouse ip_tables snd_seq_device x_tables serio_raw dell_wmi snd heci(C) parport_pc soundcore parport dcdbas snd_page_alloc dm_raid45 xor fbcon tileblit font bitblit...

[Brad Figg (brad-figg)]

This bug was filed against a series that is no longer supported and so is being marked as Won't Fix. If this issue still exists in a supported series, please file a new bug.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.