If the libEGL we are using has eglGetPlatformDisplayEXT, yet it still returns NULL, then this very likely means that it does not support the type (e.g. EGL_PLATFORM_GBM_MESA) passed in, and then returning NULL is the right thing to do.
This avoids falling back to an eglGetDisplay() implementation which does not understands the passed in gbm handle, treats it as a pointer to something else completely, followed by a crash sooner or later. Specifically this fixes using the nvidia binary driver, with nvidia's libEGL + the modesetting driver on a secondary GPU crashing inside glamor_egl_init() sometimes. Cc: Adam Jackson <[email protected]> Cc: Eric Anholt <[email protected]> Signed-off-by: Hans de Goede <[email protected]> --- glamor/glamor_egl.c | 4 ++++ glamor/glamor_egl.h | 4 +--- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/glamor/glamor_egl.c b/glamor/glamor_egl.c index 9cc0f8d..4bde637 100644 --- a/glamor/glamor_egl.c +++ b/glamor/glamor_egl.c @@ -769,6 +769,10 @@ glamor_egl_init(ScrnInfoPtr scrn, int fd) glamor_egl->display = glamor_egl_get_display(EGL_PLATFORM_GBM_MESA, glamor_egl->gbm); + if (!glamor_egl->display) { + xf86DrvMsg(scrn->scrnIndex, X_ERROR, "eglGetDisplay() failed\n"); + goto error; + } #else glamor_egl->display = eglGetDisplay((EGLNativeDisplayType) (intptr_t) fd); #endif diff --git a/glamor/glamor_egl.h b/glamor/glamor_egl.h index 6b05f57..2c6d307 100644 --- a/glamor/glamor_egl.h +++ b/glamor/glamor_egl.h @@ -67,9 +67,7 @@ glamor_egl_get_display(EGLint type, void *native) PFNEGLGETPLATFORMDISPLAYEXTPROC getPlatformDisplayEXT = (void *) eglGetProcAddress("eglGetPlatformDisplayEXT"); if (getPlatformDisplayEXT) - dpy = getPlatformDisplayEXT(type, native, NULL); - if (dpy) - return dpy; + return getPlatformDisplayEXT(type, native, NULL); } /* Welp, everything is awful. */ -- 2.9.3 _______________________________________________ [email protected]: X.Org development Archives: http://lists.x.org/archives/xorg-devel Info: https://lists.x.org/mailman/listinfo/xorg-devel
