FS#30317 - [linux] 3.4.2-2 - 3.5.3 crashes when X is killed on a DisplayLink device (udl)

Attached to Project: Arch Linux
Opened by Jonathan Hudson (stronnag) - Saturday, 16 June 2012, 15:35 GMT
Last edited by Gerardo Exequiel Pozzi (djgera) - Saturday, 17 November 2012, 18:42 GMT
Task Type Bug Report
Category Upstream Bugs
Status Closed
Assigned To Tobias Powalowski (tpowa)
Thomas Bächler (brain0)
Architecture All
Severity Low
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: linux 3.4.2-2-ARCH crashes when X is killed on a DisplayLink device (udl)

Killing X on DisplayLink with the new udl module causes a cascaded panic, after which the machine is dead (no response to sysreq). Happens on both ia32 and x86_64.

Using the older udlfb modules works without crashes, albeit with lesser functionality.


Additional info:
* linux 3.4.2-2-ARCH
* panic log attached (via netconsole).


Steps to reproduce:

Start X on a udl device
Kill the X server

   udl-panic.log (25.3 KiB)
This task depends upon

Closed by  Gerardo Exequiel Pozzi (djgera)
Saturday, 17 November 2012, 18:42 GMT
Reason for closing:  Upstream
Comment by Gerardo Exequiel Pozzi (djgera) - Saturday, 25 August 2012, 20:27 GMT
  • Field changed: Status (Unconfirmed → Assigned)
  • Field changed: Category (Kernel → Upstream Bugs)
upstream report?
Comment by Jonathan Hudson (stronnag) - Saturday, 25 August 2012, 20:31 GMT
I haven't reported it upstream (yet). Last time I used udl (vice uflfb) on a more recent kernel the same problem occurs. I can certainly reproduce on a current kernel and report on LKML.
Comment by Jonathan Hudson (stronnag) - Monday, 27 August 2012, 12:26 GMT
Reported in kernel bugzilla https://bugzilla.kernel.org/show_bug.cgi?id=46471 . Bug reproduced on mainline 3.5.3 kernel.
Comment by Tobias Powalowski (tpowa) - Monday, 05 November 2012, 15:03 GMT
Status on 3.6 line?
Comment by Jonathan Hudson (stronnag) - Monday, 05 November 2012, 19:17 GMT
Still crashes (see oops attached)
   3.6.udl.crash.txt (2.6 KiB)

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