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a=openpgp; fpr=A5C3F68F229DD60F723E6E138972F4DFDC6DC026 The correct helper for taking an f_count reference is get_file(). Now that it checks for 0 counts, use it and check results. Signed-off-by: Kees Cook --- Cc: Zack Rusin Cc: Broadcom internal kernel review list Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Thomas Zimmermann Cc: David Airlie Cc: Daniel Vetter Cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/vmwgfx/ttm_object.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/vmwgfx/ttm_object.c b/drivers/gpu/drm/vmwgfx/ttm_object.c index 6806c05e57f6..68d8ee3020b1 100644 --- a/drivers/gpu/drm/vmwgfx/ttm_object.c +++ b/drivers/gpu/drm/vmwgfx/ttm_object.c @@ -475,7 +475,7 @@ void ttm_object_device_release(struct ttm_object_device **p_tdev) */ static bool __must_check get_dma_buf_unless_doomed(struct dma_buf *dmabuf) { - return atomic_long_inc_not_zero(&dmabuf->file->f_count) != 0L; + return get_file(dmabuf->file) != NULL; } /**