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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi Chris, <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I tested a browser case with latest UXA code and experienced X crashed.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I bisected it and found that it was introduced by <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>commit 5d5b2b8ee203ae2274fc7d13ed38d2945facca9e.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The back trace of the crash is as below:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Backtrace:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>0: /home/gongzg/gfx-dev-test/src/xserver/hw/xfree86/Xorg (xorg_backtrace+0x3b) [0x81b5fdb]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>1: /home/gongzg/gfx-dev-test/src/xserver/hw/xfree86/Xorg (mieqEnqueue+0x15c) [0x8195a0c]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>2: /home/gongzg/gfx-dev-test/src/xserver/hw/xfree86/Xorg (0x8048000+0x40782) [0x8088782]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>3: /home/gongzg/gfx-dev-test/src/xserver/hw/xfree86/Xorg (xf86PostMotionEventM+0xf1) [0x80c5671]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>4: /home/gongzg/gfx-dev-test/build/lib/xorg/modules/input/evdev_drv.so (0xb7623000+0x2fdf) [0xb7625fdf]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>5: /home/gongzg/gfx-dev-test/build/lib/xorg/modules/input/evdev_drv.so (0xb7623000+0x4229) [0xb7627229]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>6: /home/gongzg/gfx-dev-test/src/xserver/hw/xfree86/Xorg (0x8048000+0x67fcf) [0x80affcf]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>7: /home/gongzg/gfx-dev-test/src/xserver/hw/xfree86/Xorg (0x8048000+0x8e984) [0x80d6984]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>8: (vdso) (__kernel_sigreturn+0x0) [0xb7fff400]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>9: /home/gongzg/gfx-dev-test/build/lib/libdrm_intel.so.1 (drm_intel_gem_bo_map_gtt+0x83) [0xb7e9cee3]<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>10: /home/gongzg/gfx-dev-test/build/lib/xorg/modules/drivers/intel_drv.so (0xb7ea1000+0xd6cb) [0xb7eae6cb] -- <span style='color:red'>intel_uxa_pixmap_put_image</span><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>11: /home/gongzg/gfx-dev-test/build/lib/xorg/modules/drivers/intel_drv.so (0xb7ea1000+0xf42c) [0xb7eb042c] --<span style='color:red'> intel_uxa_put_image</span> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>12: /home/gongzg/gfx-dev-test/build/lib/xorg/modules/drivers/intel_drv.so (0xb7ea1000+0x37f8e) [0xb7ed8f8e] -- <span style='color:red'>uxa_trapezoids<o:p></o:p></span></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>It’s a one line patch. And there is not too much thing to do with UXA code, I guess It may be a libdrm related problem.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>It’s can be simply reproduced in my machine, Use Mozilla 3.6.10 to open the following URL:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><a href="http://pnp.sh.intel.com/WRTBench/Workload_3.3_rev0.13/iterations_rev11_new.html">http://pnp.sh.intel.com/WRTBench/Workload_3.3_rev0.13/iterations_rev11_new.html</a><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>It will iterate many pages and finally give a report. The crash may occur after a few seconds of running.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Uncomment that one line patch can avoid this crash. <o:p></o:p></span></p></div></body></html>