tree: https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git page_mkwrite-off-by-one head: 63e24dff38ac137273e65ebc7929bcaa4bdcd6fe commit: 7bac4387870c94f9108bbefbf8a26b3bef455524 [4/7] ext4: Switch to page_mkwrite_check_truncate in ext4_page_mkwrite config: microblaze-randconfig-a001-20200215 (attached as .config) compiler: microblaze-linux-gcc (GCC) 7.5.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 7bac4387870c94f9108bbefbf8a26b3bef455524 # save the attached .config to linux build tree GCC_VERSION=7.5.0 make.cross ARCH=microblaze
If you fix the issue, kindly add following tag Reported-by: kbuild test robot <[email protected]> All errors (new ones prefixed by >>): fs/buffer.o: In function `block_page_mkwrite': fs/buffer.c:2505: undefined reference to `page_mkwrite_check_truncate' fs/iomap/buffered-io.o: In function `iomap_page_mkwrite': fs/iomap/buffered-io.c:1084: undefined reference to `page_mkwrite_check_truncate' fs/ext4/inode.o: In function `ext4_page_mkwrite': >> fs/ext4/inode.c:5939: undefined reference to `page_mkwrite_check_truncate' drivers/md/bcache/bset.o: In function `bch_btree_iter_next': drivers/md/bcache/bset.c:1155: undefined reference to `_GLOBAL_OFFSET_TABLE_' Segmentation fault vim +5939 fs/ext4/inode.c 5900 5901 vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf) 5902 { 5903 struct vm_area_struct *vma = vmf->vma; 5904 struct page *page = vmf->page; 5905 unsigned long len; 5906 int err; 5907 vm_fault_t ret; 5908 struct file *file = vma->vm_file; 5909 struct inode *inode = file_inode(file); 5910 handle_t *handle; 5911 get_block_t *get_block; 5912 int retries = 0; 5913 5914 if (unlikely(IS_IMMUTABLE(inode))) 5915 return VM_FAULT_SIGBUS; 5916 5917 sb_start_pagefault(inode->i_sb); 5918 file_update_time(vma->vm_file); 5919 5920 down_read(&EXT4_I(inode)->i_mmap_sem); 5921 5922 err = ext4_convert_inline_data(inode); 5923 if (err) 5924 goto out_ret; 5925 5926 /* Delalloc case is easy... */ 5927 if (test_opt(inode->i_sb, DELALLOC) && 5928 !ext4_should_journal_data(inode) && 5929 !ext4_nonda_switch(inode->i_sb)) { 5930 do { 5931 err = block_page_mkwrite(vma, vmf, 5932 ext4_da_get_block_prep); 5933 } while (err == -ENOSPC && 5934 ext4_should_retry_alloc(inode->i_sb, &retries)); 5935 goto out_ret; 5936 } 5937 5938 lock_page(page); > 5939 err = page_mkwrite_check_truncate(page, inode); 5940 if (err < 0) { 5941 unlock_page(page); 5942 goto out_ret; 5943 } 5944 len = err; 5945 5946 /* 5947 * Return if we have all the buffers mapped. This avoids the need to do 5948 * journal_start/journal_stop which can block and take a long time 5949 */ 5950 if (page_has_buffers(page)) { 5951 if (!ext4_walk_page_buffers(NULL, page_buffers(page), 5952 0, len, NULL, 5953 ext4_bh_unmapped)) { 5954 /* Wait so that we don't change page under IO */ 5955 wait_for_stable_page(page); 5956 ret = VM_FAULT_LOCKED; 5957 goto out; 5958 } 5959 } 5960 unlock_page(page); 5961 /* OK, we need to fill the hole... */ 5962 if (ext4_should_dioread_nolock(inode)) 5963 get_block = ext4_get_block_unwritten; 5964 else 5965 get_block = ext4_get_block; 5966 retry_alloc: 5967 handle = ext4_journal_start(inode, EXT4_HT_WRITE_PAGE, 5968 ext4_writepage_trans_blocks(inode)); 5969 if (IS_ERR(handle)) { 5970 ret = VM_FAULT_SIGBUS; 5971 goto out; 5972 } 5973 err = block_page_mkwrite(vma, vmf, get_block); 5974 if (!err && ext4_should_journal_data(inode)) { 5975 if (ext4_walk_page_buffers(handle, page_buffers(page), 0, 5976 PAGE_SIZE, NULL, do_journal_get_write_access)) { 5977 unlock_page(page); 5978 ret = VM_FAULT_SIGBUS; 5979 ext4_journal_stop(handle); 5980 goto out; 5981 } 5982 ext4_set_inode_state(inode, EXT4_STATE_JDATA); 5983 } 5984 ext4_journal_stop(handle); 5985 if (err == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) 5986 goto retry_alloc; 5987 out_ret: 5988 ret = block_page_mkwrite_return(err); 5989 out: 5990 up_read(&EXT4_I(inode)->i_mmap_sem); 5991 sb_end_pagefault(inode->i_sb); 5992 return ret; 5993 } 5994 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
