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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 14:17:53 +0900 |
commit | e88f693e6e8d43678c1af5d7305755098ea4d26b (patch) | |
tree | 99747477a15c7ddc80ecfec01730cafacd38c18d /fs | |
parent | 48cce130d485275c0b04e4031629d3c9d62326be (diff) | |
download | blackbird-obmc-linux-e88f693e6e8d43678c1af5d7305755098ea4d26b.tar.gz blackbird-obmc-linux-e88f693e6e8d43678c1af5d7305755098ea4d26b.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')
-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) >> |