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| author | Jan Kara <jack@suse.cz> | 2023-01-25 13:43:03 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2023-01-26 18:46:32 +0300 |
| commit | 1ea1cd11c72d1405a6b98440a9d5ea82dfa07166 (patch) | |
| tree | 649829990ea476dc16f4817b5c2b3134a9a9e0a2 | |
| parent | ee454ad2fce7baa272fc0a69f93d47013ea06b07 (diff) | |
| download | linux-1ea1cd11c72d1405a6b98440a9d5ea82dfa07166.tar.xz | |
udf: Fix directory iteration for longer tail extents
When directory's last extent has more that one block and its length is
not multiple of a block side, the code wrongly decided to move to the
next extent instead of processing the last partial block. This led to
directory corruption. Fix the rounding issue.
Signed-off-by: Jan Kara <jack@suse.cz>
| -rw-r--r-- | fs/udf/directory.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/udf/directory.c b/fs/udf/directory.c index b1424e2aa868..31f1bf8ab848 100644 --- a/fs/udf/directory.c +++ b/fs/udf/directory.c @@ -170,7 +170,7 @@ static struct buffer_head *udf_fiiter_bread_blk(struct udf_fileident_iter *iter) static int udf_fiiter_advance_blk(struct udf_fileident_iter *iter) { iter->loffset++; - if (iter->loffset < iter->elen >> iter->dir->i_blkbits) + if (iter->loffset < DIV_ROUND_UP(iter->elen, 1<<iter->dir->i_blkbits)) return 0; iter->loffset = 0; |