https://bugs.freedesktop.org/show_bug.cgi?id=38196
Summary: Null pointer dereference in
nouveau_gpuobj_channel_takedown
Product: Mesa
Version: git
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: critical
Priority: medium
Component: Drivers/DRI/nouveau
AssignedTo: [email protected]
ReportedBy: [email protected]
The code for this procedure includes (line 878) assignment to a pointer of type
struct nv50_display_crtc. However nv50_display(dev) is null for earlier cards
(e.g., nv40). This causes a kernel oops if for example a program using mesa is
terminated.
I tried skipping the loop containing this line if nv50_display(dev) is null and
this worked on my 6800 Ultra.
Best Wishes,
Bob Gleitsmann
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