# gdb /usr/bin/Xorg 4135 GNU gdb 6.8-debian Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu"... (no debugging symbols found) Attaching to program: /usr/bin/Xorg, process 4135 Reading symbols from /usr/lib/libpciaccess.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libpciaccess.so.0 Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/libpthread.so.0...(no debugging symbols found)...done. [Thread debugging using libthread_db enabled] [New Thread 0x7f184037c6e0 (LWP 4135)] Loaded symbols for /lib/libpthread.so.0 Reading symbols from /usr/lib/libXfont.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libXfont.so.1 Reading symbols from /usr/lib/libXau.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libXau.so.6 Reading symbols from /usr/lib/libfontenc.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libfontenc.so.1 Reading symbols from /usr/lib/libpixman-1.so.0...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libpixman-1.so.0 Reading symbols from /usr/lib/libhal.so.1...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libhal.so.1 Reading symbols from /lib/libdbus-1.so.3... (no debugging symbols found)...done. Loaded symbols for /lib/libdbus-1.so.3 Reading symbols from /usr/lib/libXdmcp.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libXdmcp.so.6 Reading symbols from /usr/lib/libcrypto.so.0.9.8...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libcrypto.so.0.9.8 Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libm.so.6 Reading symbols from /lib/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/librt.so.1 Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/ld-linux-x86-64.so.2...(no debugging symbols found)...done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /usr/lib/libfreetype.so.6...(no debugging symbols found)...done. Loaded symbols for /usr/lib/libfreetype.so.6 Reading symbols from /usr/lib/libz.so.1... (no debugging symbols found)...done. Loaded symbols for /usr/lib/libz.so.1 Reading symbols from /usr/lib/xorg/modules/extensions/libdri.so...(no debugging symbols found)...done. Loaded symbols for /usr/lib/xorg/modules/extensions//libdri.so Reading symbols from /usr/lib/libdrm.so.2...done. Loaded symbols for /usr/lib/libdrm.so.2 Reading symbols from /usr/lib/xorg/modules/extensions/libglx.so...done. Loaded symbols for /usr/lib/xorg/modules/extensions//libglx.so Reading symbols from /usr/lib/xorg/modules/extensions/libextmod.so...done. Loaded symbols for /usr/lib/xorg/modules/extensions//libextmod.so Reading symbols from /usr/lib/xorg/modules/fonts/libfreetype.so...done. Loaded symbols for /usr/lib/xorg/modules//fonts/libfreetype.so Reading symbols from /usr/lib/xorg/modules/libint10.so...done. Loaded symbols for /usr/lib/xorg/modules//libint10.s Reading symbols from /usr/lib/xorg/modules/libvbe.so...done. Loaded symbols for /usr/lib/xorg/modules//libvbe.so Reading symbols from /usr/lib/xorg/modules/extensions/libdbe.so...done. Loaded symbols for /usr/lib/xorg/modules/extensions//libdbe.so Reading symbols from /usr/lib/xorg/modules/extensions/librecord.so...done. Loaded symbols for /usr/lib/xorg/modules/extensions//librecord.so Reading symbols from /usr/lib/xorg/modules/drivers/intel_drv.so...done. Loaded symbols for /usr/lib/xorg/modules/drivers//intel_drv.so Reading symbols from /usr/lib/libdrm_intel.so.1...done. Loaded symbols for /usr/lib/libdrm_intel.so.1 Reading symbols from /usr/lib/xorg/modules/input/kbd_drv.so...done. Loaded symbols for /usr/lib/xorg/modules/input//kbd_drv.so Reading symbols from /usr/lib/xorg/modules/input/mouse_drv.so...done. Loaded symbols for /usr/lib/xorg/modules/input//mouse_drv.so Reading symbols from /usr/lib/xorg/modules/libfb.so...done. Loaded symbols for /usr/lib/xorg/modules//libfb.so Reading symbols from /usr/lib/dri/swrast_dri.so...done. Loaded symbols for /usr/lib/dri/swrast_dri.so Reading symbols from /usr/lib/libexpat.so.1...done. Loaded symbols for /usr/lib/libexpat.so.1 Reading symbols from /usr/lib/xorg/modules/input/evdev_drv.so...done. Loaded symbols for /usr/lib/xorg/modules/input//evdev_drv.so 0x00007f183e1cc463 in select () from /lib/libc.so.6 (gdb) cont Continuing. Program received signal SIGPIPE, Broken pipe. [Switching to Thread 0x7f184037c6e0 (LWP 4135)] 0x00007f183e1cbf03 in writev () from /lib/libc.so.6 (gdb) cont Continuing. Program received signal SIGPIPE, Broken pipe. 0x00007f183e1cbf03 in writev () from /lib/libc.so.6 (gdb) cont Continuing. Program received signal SIGSEGV, Segmentation fault. 0x00007f183c4da898 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 Current language: auto; currently asm (gdb) bt #0 0x00007f183c4da898 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 #1 0x00007f183c4da7c8 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 #2 0x00007f183c4dac7a in drm_intel_gem_bo_unreference () from /usr/lib/libdrm_intel.so.1 #3 0x00007f183c6fc2c6 in intel_batch_flush () from /usr/lib/xorg/modules/drivers//intel_drv.so #4 0x00007f183c723eae in i830_uxa_prepare_access () from /usr/lib/xorg/modules/drivers//intel_drv.so #5 0x00007f183c736a6c in uxa_copy_n_to_n () from /usr/lib/xorg/modules/drivers//intel_drv.so #6 0x00007f183c73a303 in uxa_composite () from /usr/lib/xorg/modules/drivers//intel_drv.so #7 0x0000000000531598 in ?? () #8 0x0000000000524806 in ?? () #9 0x000000000044d6e4 in Dispatch () #10 0x00000000004336fd in main () (gdb) bt f #0 0x00007f183c4da898 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 No locals. #1 0x00007f183c4da7c8 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 No locals. #2 0x00007f183c4dac7a in drm_intel_gem_bo_unreference () from /usr/lib/libdrm_intel.so.1 No locals. #3 0x00007f183c6fc2c6 in intel_batch_flush () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #4 0x00007f183c723eae in i830_uxa_prepare_access () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #5 0x00007f183c736a6c in uxa_copy_n_to_n () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #6 0x00007f183c73a303 in uxa_composite () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #7 0x0000000000531598 in ?? () No symbol table info available. #8 0x0000000000524806 in ?? () No symbol table info available. #9 0x000000000044d6e4 in Dispatch () No symbol table info available. #10 0x00000000004336fd in main () No symbol table info available. (gdb) cont Continuing. Program received signal SIGSEGV, Segmentation fault. 0x00007f183c6fb7f7 in I830EmitFlush () from /usr/lib/xorg/modules/drivers//intel_drv.so (gdb) bt #0 0x00007f183c6fb7f7 in I830EmitFlush () from /usr/lib/xorg/modules/drivers//intel_drv.so #1 0x00007f183c6fbb17 in I830Sync () from /usr/lib/xorg/modules/drivers//intel_drv.so #2 0x00007f183c708573 in I830LeaveVT () from /usr/lib/xorg/modules/drivers//intel_drv.so #3 0x00000000004681ed in AbortDDX () #4 0x00000000004f82d8 in AbortServer () #5 0x0000000000480ff0 in xf86SigHandler () #6 #7 0x00007f183c4da898 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 #8 0x00007f183c4da7c8 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 #9 0x00007f183c4dac7a in drm_intel_gem_bo_unreference () from /usr/lib/libdrm_intel.so.1 #10 0x00007f183c6fc2c6 in intel_batch_flush () from /usr/lib/xorg/modules/drivers//intel_drv.so #11 0x00007f183c723eae in i830_uxa_prepare_access () from /usr/lib/xorg/modules/drivers//intel_drv.so #12 0x00007f183c736a6c in uxa_copy_n_to_n () from /usr/lib/xorg/modules/drivers//intel_drv.so #13 0x00007f183c73a303 in uxa_composite () from /usr/lib/xorg/modules/drivers//intel_drv.so #14 0x0000000000531598 in ?? () #15 0x0000000000524806 in ?? () #16 0x000000000044d6e4 in Dispatch () #17 0x00000000004336fd in main () (gdb) bt f #0 0x00007f183c6fb7f7 in I830EmitFlush () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #1 0x00007f183c6fbb17 in I830Sync () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #2 0x00007f183c708573 in I830LeaveVT () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #3 0x00000000004681ed in AbortDDX () No symbol table info available. #4 0x00000000004f82d8 in AbortServer () No symbol table info available. #5 0x0000000000480ff0 in xf86SigHandler () No symbol table info available. #6 No symbol table info available. #7 0x00007f183c4da898 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 No locals. #8 0x00007f183c4da7c8 in drm_intel_gem_bo_unreference_locked () from /usr/lib/libdrm_intel.so.1 No locals. #9 0x00007f183c4dac7a in drm_intel_gem_bo_unreference () from /usr/lib/libdrm_intel.so.1 No locals. #10 0x00007f183c6fc2c6 in intel_batch_flush () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #11 0x00007f183c723eae in i830_uxa_prepare_access () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #12 0x00007f183c736a6c in uxa_copy_n_to_n () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #13 0x00007f183c73a303 in uxa_composite () from /usr/lib/xorg/modules/drivers//intel_drv.so No locals. #14 0x0000000000531598 in ?? () No symbol table info available. #15 0x0000000000524806 in ?? () No symbol table info available. #16 0x000000000044d6e4 in Dispatch () No symbol table info available. #17 0x00000000004336fd in main ()