"modprobe mISDN_dsp" freezed my system. The last massage in the terminal was "killed".
A patch referencing this bug report has been merged in Linux v3.6-rc1: commit 9ea3c498962bc63748e92c31c874169ab0726324 Author: Martlin Ettl <ettl.martin@gmx.de> Date: Thu Jul 5 17:58:46 2012 +0100 backlight: fix memory leak on obscure error path
Note the fix accidentally referenced the wrong bug!
A patch referencing a commit referencing this bug report has been merged in Linux v3.7-rc1: commit e1c9ac420ef15e39c2ead879cda1677d1e5cb2b6 Author: Jiri Kosina <jkosina@suse.cz> Date: Mon Jul 30 10:40:28 2012 +0200 Revert "backlight: fix memory leak on obscure error path"