Module: Mesa Branch: master Commit: 769ac1ec78e5bc52191ef0393e4702945bbacaa9 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=769ac1ec78e5bc52191ef0393e4702945bbacaa9
Author: Jan Ziak <[email protected]> Date: Sun Jul 31 15:44:18 2016 +0200 egl/x11: avoid using freed memory if dri2 init fails Found with valgrind: ==4841== Invalid read of size 4 ==4841== at 0x56BDC80: dri2_initialize (egl_dri2.c:783) ==4841== by 0x56BAFE5: _eglMatchAndInitialize (egldriver.c:261) ==4841== by 0x56BB15E: _eglMatchDriver (egldriver.c:295) ==4841== by 0x56B58C9: eglInitialize (eglapi.c:480) ==4841== by 0x4F537DC: _glfwInitEGL (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x4F4BEFB: _glfwPlatformInit (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x4F46F40: glfwInit (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x402E59: main ==4841== Address 0x6a05824 is 148 bytes inside a block of size 480 free'd ==4841== at 0x4C2B680: free (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==4841== by 0x56C2AAE: dri2_initialize_x11_swrast (platform_x11.c:1233) ==4841== by 0x56C2AAE: dri2_initialize_x11 (platform_x11.c:1493) ==4841== by 0x56BDCEB: dri2_initialize (egl_dri2.c:805) ==4841== by 0x56BAFAF: _eglMatchAndInitialize (egldriver.c:261) ==4841== by 0x56BB0C9: _eglMatchDriver (egldriver.c:292) ==4841== by 0x56B58C9: eglInitialize (eglapi.c:480) ==4841== by 0x4F537DC: _glfwInitEGL (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x4F4BEFB: _glfwPlatformInit (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x4F46F40: glfwInit (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x402E59: main ==4841== Block was alloc'd at ==4841== at 0x4C2A868: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==4841== by 0x56C2A47: dri2_initialize_x11_swrast (platform_x11.c:1171) ==4841== by 0x56C2A47: dri2_initialize_x11 (platform_x11.c:1493) ==4841== by 0x56BDCEB: dri2_initialize (egl_dri2.c:805) ==4841== by 0x56BAFAF: _eglMatchAndInitialize (egldriver.c:261) ==4841== by 0x56BB0C9: _eglMatchDriver (egldriver.c:292) ==4841== by 0x56B58C9: eglInitialize (eglapi.c:480) ==4841== by 0x4F537DC: _glfwInitEGL (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x4F4BEFB: _glfwPlatformInit (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x4F46F40: glfwInit (in /usr/lib64/libglfw.so.3.2) ==4841== by 0x402E59: main Signed-off-by: Jan Ziak (http://atom-symbol.net) <[email protected]> Fixes: 9ee683f877 (egl/dri2: Add reference count for dri2_egl_display) Cc: "12.0" <[email protected]> Reviewed-by: Nicolas Boichat <[email protected]> Reviewed-by: Emil Velikov <[email protected]> --- src/egl/drivers/dri2/platform_x11.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c index c0a4005..686552c 100644 --- a/src/egl/drivers/dri2/platform_x11.c +++ b/src/egl/drivers/dri2/platform_x11.c @@ -1231,6 +1231,7 @@ dri2_initialize_x11_swrast(_EGLDriver *drv, _EGLDisplay *disp) xcb_disconnect(dri2_dpy->conn); cleanup_dpy: free(dri2_dpy); + disp->DriverData = NULL; return EGL_FALSE; } @@ -1370,6 +1371,7 @@ dri2_initialize_x11_dri3(_EGLDriver *drv, _EGLDisplay *disp) xcb_disconnect(dri2_dpy->conn); cleanup_dpy: free(dri2_dpy); + disp->DriverData = NULL; return EGL_FALSE; } @@ -1467,6 +1469,7 @@ dri2_initialize_x11_dri2(_EGLDriver *drv, _EGLDisplay *disp) xcb_disconnect(dri2_dpy->conn); cleanup_dpy: free(dri2_dpy); + disp->DriverData = NULL; return EGL_FALSE; } _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
