From: Dongwon Kim <[email protected]> 'fence_fd' needs to be validated always before being referenced And the passing condition should include '== 0' as 0 is a valid value for the file descriptor.
Suggested-by: Marc-André Lureau <[email protected]> Reviewed-by: Daniel P. Berrangé <[email protected]> Cc: Philippe Mathieu-Daudé <[email protected]> Cc: Daniel P. Berrangé <[email protected]> Cc: Vivek Kasireddy <[email protected]> Signed-off-by: Dongwon Kim <[email protected]> Message-Id: <[email protected]> (cherry picked from commit e4e62514e3cc2fc9dbae44af8b80f61c730beab4) Signed-off-by: Michael Tokarev <[email protected]> diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c index 3af5ac5bcf..955234429d 100644 --- a/ui/gtk-egl.c +++ b/ui/gtk-egl.c @@ -99,7 +99,7 @@ void gd_egl_draw(VirtualConsole *vc) #ifdef CONFIG_GBM if (dmabuf) { egl_dmabuf_create_fence(dmabuf); - if (dmabuf->fence_fd > 0) { + if (dmabuf->fence_fd >= 0) { qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc); return; } diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c index 52dcac161e..7fffd0544e 100644 --- a/ui/gtk-gl-area.c +++ b/ui/gtk-gl-area.c @@ -86,7 +86,7 @@ void gd_gl_area_draw(VirtualConsole *vc) #ifdef CONFIG_GBM if (dmabuf) { egl_dmabuf_create_fence(dmabuf); - if (dmabuf->fence_fd > 0) { + if (dmabuf->fence_fd >= 0) { qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc); return; } diff --git a/ui/gtk.c b/ui/gtk.c index c4a9662085..f1bb838ed3 100644 --- a/ui/gtk.c +++ b/ui/gtk.c @@ -597,10 +597,12 @@ void gd_hw_gl_flushed(void *vcon) VirtualConsole *vc = vcon; QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf; - qemu_set_fd_handler(dmabuf->fence_fd, NULL, NULL, NULL); - close(dmabuf->fence_fd); - dmabuf->fence_fd = -1; - graphic_hw_gl_block(vc->gfx.dcl.con, false); + if (dmabuf->fence_fd >= 0) { + qemu_set_fd_handler(dmabuf->fence_fd, NULL, NULL, NULL); + close(dmabuf->fence_fd); + dmabuf->fence_fd = -1; + graphic_hw_gl_block(vc->gfx.dcl.con, false); + } } /** DisplayState Callbacks (opengl version) **/ -- 2.39.2
