Regression: null pointer dereference on reboot after switcheroo use
Submitted by Cristian Rodríguez
Assigned to Nouveau Project
Description
Created attachment 75867
screenshot of the crash
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
causes a null ptr deref at shurdown in this hybrid graphics laptop.
01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
It used to work fine in 3.6 , it broke at some point after 3.7 and continues to be broken in 3.8 or in 3.9.
The attached file has a screen caputure of the crash.
Attachment 75867, "screenshot of the crash":
