http://bugs.freedesktop.org/show_bug.cgi?id=21908
Summary: SIGSEGV when no kernel DRM present
Product: xorg
Version: unspecified
Platform: x86 (IA32)
OS/Version: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: Driver/nouveau
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Created an attachment (id=26165)
--> (http://bugs.freedesktop.org/attachment.cgi?id=26165)
Patch for SIGSEGV when no kernel-side DRM is present
The nouveau driver (from git on 13/04/2009) experienced SIGSEGV when no
kernel-side DRM is present.
The component version:
xserver: 1.5.3
libdrm: 2.4.9
xf86-video-nouveau: git from 13/04/2009
The problem was narrowed down to nv_driver.c:NVMapMemSW() - the function
declares 'struct nouveau_device', which in fact, should be 'struct
nouveau_device_priv' for DRM related functions to work properly.
The crashes were related to the accesses to 'mm_enabled' field of 'struct
nouveau_device_priv', which points to a garbage when only 'struct
nouveau_device' declared.
Attached patch (against git from 13/04/2009) solved the problem.
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