https://bugs.freedesktop.org/show_bug.cgi?id=56546
Priority: medium
Bug ID: 56546
Assignee: nouveau@lists.freedesktop.org
Summary: crash at the second render when applying gamma
correction
Severity: critical
Classification: Unclassified
OS: Linux (All)
Reporter: y...@3delight.com
Hardware: x86-64 (AMD64)
Status: NEW
Version: 8.0
Component: Drivers/DRI/nouveau
Product: Mesa
Created attachment 69256
--> https://bugs.freedesktop.org/attachment.cgi?id=69256&action=edit
example of the crash
Here a very simple program which illustrate a bug in
driver 2.1 Mesa 8.0.4 when applying a gamma value with opengl.
(The program is OK with driver NVIDIA).
In attachment, the file utc24.tga used by the program glut_gamma_bug.cpp.
Compile the program with the command:
g++ -L/usr/lib64 -lGL -lGLU -lglut -lX11 -lXi -lxcb-glx -lxcb-xlib -ldl
glut_gamma_bug.cpp
Start it with: ./a.out
It will open a small window with an image composed of vertical strips.
Press the enter key (it apply a gamma correction of 3 to the image):
a) it will print a message: KEY_ENTER
b) it will print another message: current error GL: no error
c) the same image will be brightness
d) at the second message: current error GL: no error, it will crash
Crash in:
==17340== Invalid read of size 4
==17340== at 0xE5D4ABE: set_sampler_views.isra.2 (u_atomic.h:62)
==17340== by 0xE5B72E8: draw_textured_quad.isra.8 (st_cb_drawpixels.c:777)
==17340== by 0xE5B9596: st_DrawPixels (st_cb_drawpixels.c:1156)
==17340== by 0xE56BE98: _mesa_DrawPixels (drawpix.c:131)
=17340== Address 0x101a95b0 is 0 bytes inside a block of size 96 free'd
==17340== at 0x4C2A5C6: free (vg_replace_malloc.c:446)
==17340== by 0xE5B95FB: st_DrawPixels (u_inlines.h:134)
==17340== by 0xE56BE98: _mesa_DrawPixels (drawpix.c:131)
Thanks.
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