diff options
| author | Jan Kara <jack@suse.cz> | 2019-03-11 15:04:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-27 14:13:02 +0900 |
| commit | 92477062dc4feedcf55d9a8bb2dfcacf71518918 (patch) | |
| tree | d3f7ebcded699d4e17b0ff0bdd4c21679ec08fb3 | |
| parent | 9c32ada4c07b3660759c3f33ba4620555c30b406 (diff) | |
udf: Fix crash on IO error during truncate
commit d3ca4651d05c0ff7259d087d8c949bcf3e14fb46 upstream.
When truncate(2) hits IO error when reading indirect extent block the
code just bugs with:
kernel BUG at linux-4.15.0/fs/udf/truncate.c:249!
...
Fix the problem by bailing out cleanly in case of IO error.
CC: stable@vger.kernel.org
Reported-by: jean-luc malet <jeanluc.malet@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/udf/truncate.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/udf/truncate.c b/fs/udf/truncate.c index 42b8c57795cb..c6ce7503a329 100644 --- a/fs/udf/truncate.c +++ b/fs/udf/truncate.c @@ -260,6 +260,9 @@ void udf_truncate_extents(struct inode *inode) epos.block = eloc; epos.bh = udf_tread(sb, udf_get_lb_pblock(sb, &eloc, 0)); + /* Error reading indirect block? */ + if (!epos.bh) + return; if (elen) indirect_ext_len = (elen + sb->s_blocksize - 1) >> |