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| author | Jan Kara <jack@suse.cz> | 2019-03-11 15:04:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-27 14:14:39 +0900 |
| commit | c72e90d94a148be5b04dd47d84303006d645d36e (patch) | |
| tree | d0f333d4f34db92c69060297291772c14ecbf313 /fs/udf | |
| parent | 9cae232a8706875b4cdbe8fc4756aef616b8c7ba (diff) | |
| download | linux-stable-c72e90d94a148be5b04dd47d84303006d645d36e.tar.gz linux-stable-c72e90d94a148be5b04dd47d84303006d645d36e.tar.bz2 linux-stable-c72e90d94a148be5b04dd47d84303006d645d36e.zip | |
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>
Diffstat (limited to 'fs/udf')
| -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 b647f0bd150c..94220ba85628 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) >> |