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charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Hi LiangCheng, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 691d401c7e0e5ea34ac6f8151bc0696db1b2500a commit: 0c4932f6ddf815618fa34f7403df682aed7862b5 drm/tiny: pixpaper: Fix missing dependency on DRM_GEM_SHMEM_HELPER date: 6 weeks ago config: arm-randconfig-004-20251102 (https://download.01.org/0day-ci/archive/20251102/202511020901.GlNgowuw-lkp@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 14.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251102/202511020901.GlNgowuw-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202511020901.GlNgowuw-lkp@intel.com/ All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_shmem_helper.o: in function `drm_gem_shmem_fault': >> drivers/gpu/drm/drm_gem_shmem_helper.c:560:(.text+0x1a2): undefined reference to `vmf_insert_pfn' arm-linux-gnueabi-ld: (vmf_insert_pfn): Unknown destination type (ARM/Thumb) in drivers/gpu/drm/drm_gem_shmem_helper.o >> drivers/gpu/drm/drm_gem_shmem_helper.c:560:(.text+0x1a2): dangerous relocation: unsupported relocation Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for DRM_GEM_SHMEM_HELPER Depends on [n]: HAS_IOMEM [=y] && DRM [=y] && MMU [=n] Selected by [y]: - DRM_PIXPAPER [=y] && HAS_IOMEM [=y] && DRM [=y] && SPI [=y] vim +560 drivers/gpu/drm/drm_gem_shmem_helper.c 2194a63a818db71 Noralf Trønnes 2019-03-12 537 2194a63a818db71 Noralf Trønnes 2019-03-12 538 static vm_fault_t drm_gem_shmem_fault(struct vm_fault *vmf) 2194a63a818db71 Noralf Trønnes 2019-03-12 539 { 2194a63a818db71 Noralf Trønnes 2019-03-12 540 struct vm_area_struct *vma = vmf->vma; 2194a63a818db71 Noralf Trønnes 2019-03-12 541 struct drm_gem_object *obj = vma->vm_private_data; 2194a63a818db71 Noralf Trønnes 2019-03-12 542 struct drm_gem_shmem_object *shmem = to_drm_gem_shmem_obj(obj); 2194a63a818db71 Noralf Trønnes 2019-03-12 543 loff_t num_pages = obj->size >> PAGE_SHIFT; d611b4a0907cece Neil Roberts 2021-02-23 544 vm_fault_t ret; 2194a63a818db71 Noralf Trønnes 2019-03-12 545 struct page *page; 11d5a4745e00e73 Neil Roberts 2021-02-23 546 pgoff_t page_offset; 11d5a4745e00e73 Neil Roberts 2021-02-23 547 11d5a4745e00e73 Neil Roberts 2021-02-23 548 /* We don't use vmf->pgoff since that has the fake offset */ 11d5a4745e00e73 Neil Roberts 2021-02-23 549 page_offset = (vmf->address - vma->vm_start) >> PAGE_SHIFT; 2194a63a818db71 Noralf Trønnes 2019-03-12 550 21aa27ddc582693 Dmitry Osipenko 2023-05-30 551 dma_resv_lock(shmem->base.resv, NULL); 2194a63a818db71 Noralf Trønnes 2019-03-12 552 11d5a4745e00e73 Neil Roberts 2021-02-23 553 if (page_offset >= num_pages || 3f6a1e22fae95a5 Dmitry Osipenko 2022-11-16 554 drm_WARN_ON_ONCE(obj->dev, !shmem->pages) || d611b4a0907cece Neil Roberts 2021-02-23 555 shmem->madv < 0) { d611b4a0907cece Neil Roberts 2021-02-23 556 ret = VM_FAULT_SIGBUS; d611b4a0907cece Neil Roberts 2021-02-23 557 } else { 11d5a4745e00e73 Neil Roberts 2021-02-23 558 page = shmem->pages[page_offset]; 2194a63a818db71 Noralf Trønnes 2019-03-12 559 8b93d1d7dbd578f Simona Vetter 2021-08-12 @560 ret = vmf_insert_pfn(vma, vmf->address, page_to_pfn(page)); d611b4a0907cece Neil Roberts 2021-02-23 561 } d611b4a0907cece Neil Roberts 2021-02-23 562 21aa27ddc582693 Dmitry Osipenko 2023-05-30 563 dma_resv_unlock(shmem->base.resv); d611b4a0907cece Neil Roberts 2021-02-23 564 d611b4a0907cece Neil Roberts 2021-02-23 565 return ret; 2194a63a818db71 Noralf Trønnes 2019-03-12 566 } 2194a63a818db71 Noralf Trønnes 2019-03-12 567 :::::: The code at line 560 was first introduced by commit :::::: 8b93d1d7dbd578fd296e70008b29c0f62d09d7cb drm/shmem-helper: Switch to vmf_insert_pfn :::::: TO: Daniel Vetter :::::: CC: Daniel Vetter -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki