https://bugs.freedesktop.org/show_bug.cgi?id=75279 --- Comment #31 from Frederic Bezies --- Created attachment 95189 --> https://bugs.freedesktop.org/attachment.cgi?id=95189&action=edit Valgrind log with debug symbols for Mozilla Firefox trunk code. And log for mozilla Firefox trunk code. Always the same beginning : Invalid read of size 4 at 0x161590BE: nouveau_fence_wait (nouveau_fence.c:205) by 0x161E9FF4: nv50_screen_destroy (nv50_screen.c:293) by 0x16149CDE: dri_destroy_screen_helper (dri_screen.c:378) by 0x16149D74: dri_destroy_screen (dri_screen.c:388) by 0x15E503D6: driDestroyScreen (dri_util.c:234) by 0x1256D6C1: dri2DestroyScreen (dri2_glx.c:712) by 0x12549FE5: FreeScreenConfigs.isra.3 (glxext.c:208) by 0x1254A064: glx_display_free (glxext.c:231) by 0x1254A164: __glXCloseDisplay (glxext.c:272) by 0xEF009F1: XCloseDisplay (in /usr/lib/libX11.so.6.3.0) Any idea ? -- You are receiving this mail because: You are the assignee for the bug.