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authorYe Bin <yebin10@huawei.com>2022-03-21 17:44:38 +0300
committerTheodore Ts'o <tytso@mit.edu>2022-04-13 05:22:14 +0300
commita2b0b205d125f27cddfb4f7280e39affdaf46686 (patch)
treefdff6216c18ca3182652f90b390b10fd6bcee8f7 /fs/ext4
parentad5cd4f4ee4d5fcdb1bfb7a0c073072961e70783 (diff)
downloadlinux-a2b0b205d125f27cddfb4f7280e39affdaf46686.tar.xz
ext4: fix symlink file size not match to file content
We got issue as follows: [home]# fsck.ext4 -fn ram0yb e2fsck 1.45.6 (20-Mar-2020) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Symlink /p3/d14/d1a/l3d (inode #3494) is invalid. Clear? no Entry 'l3d' in /p3/d14/d1a (3383) has an incorrect filetype (was 7, should be 0). Fix? no As the symlink file size does not match the file content. If the writeback of the symlink data block failed, ext4_finish_bio() handles the end of IO. However this function fails to mark the buffer with BH_write_io_error and so when unmount does journal checkpoint it cannot detect the writeback error and will cleanup the journal. Thus we've lost the correct data in the journal area. To solve this issue, mark the buffer as BH_write_io_error in ext4_finish_bio(). Cc: stable@kernel.org Signed-off-by: Ye Bin <yebin10@huawei.com> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20220321144438.201685-1-yebin10@huawei.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/page-io.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index 1d370364230e..40b7d8485b44 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -134,8 +134,10 @@ static void ext4_finish_bio(struct bio *bio)
continue;
}
clear_buffer_async_write(bh);
- if (bio->bi_status)
+ if (bio->bi_status) {
+ set_buffer_write_io_error(bh);
buffer_io_error(bh);
+ }
} while ((bh = bh->b_this_page) != head);
spin_unlock_irqrestore(&head->b_uptodate_lock, flags);
if (!under_io) {