Created attachment 52032 [details]
Photo of monitor displaying Kernel messages like call trace
This report is a follow up for my message sent to the mailing list .
Unfortunately the Bugzilla instance of Linux  is still down due to the security breach in August and therefore I am reporting this issue here in the FreeDesktop Bugzilla .
Having a lot of windows open using the Awesome window manager  the X server crashed printing the following to the monitor. Please see the attached image for the complete message.
Pid: 1503, comm: Xorg Tainted: G C 3.0.0-1-amd64 #1 LENOVO INVALID/Bali
Process Xorg (pid: 1503, threadinfo ffff88010c208000, task ffff88011950d790
Code: 00 00 00 00 00 48 8b 94 24 a0 00 00 00 48 8d 45 28 48 ff 44 24 10 48 c7 44 24 50 00 00 …
RIP […] shmem_truncate_range+0x45c/0x6a1
Unfortunately for debugging this issue this is the first time it happened and the issue is not reproducible.
Debian Wheezy/testing is running on this system with Linux 3.0.0-3  and the (non-free) firmware for the graphics card.
There is no direct evidence that this is related to drm/radeon. The oops happens in the shmdt system call, most likely called by the X server MIT-SHM extension code.
Unless you can also reproduce an oops with the MIT-SHM extension disabled (add -extension MIT-SHM to the X server command line, verify with xdpyinfo|grep SHM), I'm afraid you'll have to report it to the kernel bugzilla or maybe the linux-kernel mailing list for now.
(In reply to comment #1)
> [...] report it to the kernel bugzilla or maybe the linux-kernel mailing list
> for now.
Or against the Debian kernel package.
I can’t remember having seen this, so I close this as invalid.