On Thu 18-04-24 14:39:46, Ye Bin wrote:
> There's a issue:
> []$~/e2fsprogs/e2fsck/e2fsck -f scsi-disk2.img
> e2fsck 1.47.0 (5-Feb-2023)
> scsi-disk2.img: recovering journal
> Clearing orphaned inode 12 (uid=0, gid=0, mode=0140777, size=0)
> Pass 1: Checking inodes, blocks, and sizes
> Extended attribute block 4247 has reference count 3, should be 2. Fix<y>? no
> Pass 2: Checking directory structure
> Pass 3: Checking directory connectivity
> Pass 4: Checking reference counts
> Pass 5: Checking group summary information
> Free blocks count wrong (249189, counted=249188).
> Fix<y>? no
> Free inodes count wrong (65526, counted=65523).
> Fix<y>? no
>
> scsi-disk2.img: ***** FILE SYSTEM WAS MODIFIED *****
>
> scsi-disk2.img: ********** WARNING: Filesystem still has errors **********
>
> scsi-disk2.img: 10/65536 files (0.0% non-contiguous), 12955/262144 blocks
>
> Above issue can reproduce as follows:
> step1: socat UNIX-LISTEN:/home/test/mysocket.sock,mode=777,reuseaddr,fork EXEC:/home/test &
> step2: setfacl some xattr for mysocket.sock
> step3: cp -a /home/test/mysocket.sock /home/test/sock1
> cp -a /home/test/mysocket.sock /home/test/sock2
> step4: sync
> step5: Power-off
> step6: run e2fsck
>
> As after commit 42475e281d22 add ext2fs_inode_has_valid_blocks() judgement in
> release_inode_blocks() which means socket type file skip realse block include
> ACL block. The kernel does not restrict the setting of extended attributes for
> socket files. So this will lead to ACL block leak.
> To solve above issue there's need to release ACL block for other kind of
> special file.
>
> Fixes: 42475e281d22 ("super.c (release_inode_blocks): Don't try to release the blocks if the orphaned inode is a device file, symlink, or some other kind of special file that doesn't have a block list.")
> Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
Makes sense. Feel free to add:
Reviewed-by: Jan Kara <jack@xxxxxxx>
Honza
> ---
> e2fsck/super.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/e2fsck/super.c b/e2fsck/super.c
> index be40dd8f..cefc2b07 100644
> --- a/e2fsck/super.c
> +++ b/e2fsck/super.c
> @@ -196,7 +196,7 @@ static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino,
> __u32 count;
>
> if (!ext2fs_inode_has_valid_blocks2(fs, EXT2_INODE(inode)))
> - return 0;
> + goto release_acl;
>
> pb.buf = block_buf + 3 * ctx->fs->blocksize;
> pb.ctx = ctx;
> @@ -235,7 +235,7 @@ static int release_inode_blocks(e2fsck_t ctx, ext2_ino_t ino,
> if (pb.truncated_blocks)
> ext2fs_iblk_sub_blocks(fs, EXT2_INODE(inode),
> pb.truncated_blocks);
> -
> +release_acl:
> blk = ext2fs_file_acl_block(fs, EXT2_INODE(inode));
> if (blk) {
> retval = ext2fs_adjust_ea_refcount3(fs, blk, block_buf, -1,
> --
> 2.31.1
>
--
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
