Hi Yu, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v4.20-rc7 next-20181221] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Yu-Zhao/drm-amd-validate-user-pitch-alignment/20181222-153630 config: i386-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): In file included from include/drm/drm_mm.h:49:0, from include/drm/drmP.h:73, from drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:26: drivers/gpu/drm/amd/amdgpu/amdgpu_display.c: In function 'amdgpu_display_user_framebuffer_create': >> drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:556:17: warning: format '%ld' expects argument of type 'long int', but argument 4 has type 'size_t {aka unsigned int}' [-Wformat=] DRM_DEBUG_KMS("Invalid GEM size: expecting >= %d but got %ld\n", ^ pitch * height, obj->size); ~~~~~~ include/drm/drm_print.h:362:22: note: in definition of macro 'DRM_DEBUG_KMS' drm_dbg(DRM_UT_KMS, fmt, ##__VA_ARGS__) ^~~ vim +556 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c 521 522 struct drm_framebuffer * 523 amdgpu_display_user_framebuffer_create(struct drm_device *dev, 524 struct drm_file *file_priv, 525 const struct drm_mode_fb_cmd2 *mode_cmd) 526 { 527 struct drm_gem_object *obj; 528 struct amdgpu_framebuffer *amdgpu_fb; 529 int ret; 530 int height; 531 struct amdgpu_device *adev = dev->dev_private; 532 int cpp = drm_format_plane_cpp(mode_cmd->pixel_format, 0); 533 int pitch = amdgpu_align_pitch(adev, mode_cmd->pitches[0], cpp, false); 534 535 if (mode_cmd->pitches[0] != pitch) { 536 DRM_DEBUG_KMS("Invalid pitch: expecting %d but got %d\n", 537 pitch, mode_cmd->pitches[0]); 538 return ERR_PTR(-EINVAL); 539 } 540 541 obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]); 542 if (obj == NULL) { 543 dev_err(&dev->pdev->dev, "No GEM object associated to handle 0x%08X, " 544 "can't create framebuffer\n", mode_cmd->handles[0]); 545 return ERR_PTR(-ENOENT); 546 } 547 548 /* Handle is imported dma-buf, so cannot be migrated to VRAM for scanout */ 549 if (obj->import_attach) { 550 DRM_DEBUG_KMS("Cannot create framebuffer from imported dma_buf\n"); 551 return ERR_PTR(-EINVAL); 552 } 553 554 height = ALIGN(mode_cmd->height, 8); 555 if (obj->size < pitch * height) { > 556 DRM_DEBUG_KMS("Invalid GEM size: expecting >= %d but got %ld\n", 557 pitch * height, obj->size); 558 return ERR_PTR(-EINVAL); 559 } 560 561 amdgpu_fb = kzalloc(sizeof(*amdgpu_fb), GFP_KERNEL); 562 if (amdgpu_fb == NULL) { 563 drm_gem_object_put_unlocked(obj); 564 return ERR_PTR(-ENOMEM); 565 } 566 567 ret = amdgpu_display_framebuffer_init(dev, amdgpu_fb, mode_cmd, obj); 568 if (ret) { 569 kfree(amdgpu_fb); 570 drm_gem_object_put_unlocked(obj); 571 return ERR_PTR(ret); 572 } 573 574 return &amdgpu_fb->base; 575 } 576 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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