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| author | Jan Kara <jack@suse.cz> | 2019-03-11 17:04:18 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2019-03-18 18:29:52 +0300 |
| commit | d3ca4651d05c0ff7259d087d8c949bcf3e14fb46 (patch) | |
| tree | 9a04ef010a6bd97547fe68d0f0ce55213612ab29 | |
| parent | 9e98c678c2d6ae3a17cb2de55d17f69dddaa231b (diff) | |
| download | linux-d3ca4651d05c0ff7259d087d8c949bcf3e14fb46.tar.xz | |
udf: Fix crash on IO error during truncate
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>
| -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) >> |