Hi Heinrich, [auto build test WARNING on drm/drm-next] [also build test WARNING on v4.8-rc3 next-20160823] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information] url: https://github.com/0day-ci/linux/commits/Heinrich-Schuchardt/drm-vmwgfx-avoid-possible-NULL-pointer-dereference/20160822-051807 base: git://people.freedesktop.org/~airlied/linux.git drm-next config: x86_64-randconfig-x016-201634 (attached as .config) compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c: In function 'vmw_cmd_res_reloc_add': >> drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c:656:3: warning: 'return' with no value, in function returning non-void [-Wreturn-type] return; ^~~~~~ drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c:646:12: note: declared here static int vmw_cmd_res_reloc_add(struct vmw_private *dev_priv, ^~~~~~~~~~~~~~~~~~~~~ vim +/return +656 drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c 640 * @sw_context: Pointer to the software context. 641 * @id_loc: Pointer to where the id that needs translation is located. 642 * @res: Valid pointer to a struct vmw_resource. 643 * @p_val: If non null, a pointer to the struct vmw_resource_validate_node 644 * used for this resource is returned here. 645 */ 646 static int vmw_cmd_res_reloc_add(struct vmw_private *dev_priv, 647 struct vmw_sw_context *sw_context, 648 uint32_t *id_loc, 649 struct vmw_resource *res, 650 struct vmw_resource_val_node **p_val) 651 { 652 int ret; 653 struct vmw_resource_val_node *node; 654 655 if (!p_val) > 656 return; 657 658 *p_val = NULL; 659 660 ret = vmw_resource_relocation_add(&sw_context->res_relocations, 661 res, 662 id_loc - sw_context->buf_start); 663 if (unlikely(ret != 0)) 664 return ret; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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