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Commit 19abd88b authored by Chao Yu's avatar Chao Yu Committed by Jaegeuk Kim
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f2fs: fix to trigger fsck if dirent.name_len is zero 



While traversing dirents in f2fs_fill_dentries(), if bitmap is valid,
filename length should not be zero, otherwise, directory structure
consistency could be corrupted, in this case, let's print related
info and set SBI_NEED_FSCK to trigger fsck for repairing.

Signed-off-by: default avatarChao Yu <yuchao0@huawei.com>
Signed-off-by: default avatarJaegeuk Kim <jaegeuk@kernel.org>
parent f4cd5ec2

fs/f2fs/dir.c

+4 −0
Original line number Diff line number Diff line
@@ -800,6 +800,10 @@ int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d, 
		if (de->name_len == 0) {

			bit_pos++;

			ctx->pos = start_pos + bit_pos;

			printk_ratelimited(

				"%s, invalid namelen(0), ino:%u, run fsck to fix.",

				KERN_WARNING, le32_to_cpu(de->ino));

			set_sbi_flag(sbi, SBI_NEED_FSCK);

			continue;

		}