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| author | Darrick J. Wong <darrick.wong@oracle.com> | 2017-08-24 13:22:06 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2017-08-24 13:22:06 -0400 |
| commit | 1bd8d6cd3e413d64e543ec3e69ff43e75a1cf1ea (patch) | |
| tree | 51616e94cb1964210e88b6005cab48e4b10f12b2 /fs/ext4/file.c | |
| parent | 901ed070df3c2c19e3083a734eafc82599fe991b (diff) | |
| download | linux-1bd8d6cd3e413d64e543ec3e69ff43e75a1cf1ea.tar.gz | |
ext4: in ext4_seek_{hole,data}, return -ENXIO for negative offsets
In the ext4 implementations of SEEK_HOLE and SEEK_DATA, make sure we
return -ENXIO for negative offsets instead of banging around inside
the extent code and returning -EFSCORRUPTED.
Reported-by: Mateusz S <muttdini@gmail.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org # 4.6
Diffstat (limited to 'fs/ext4/file.c')
| -rw-r--r-- | fs/ext4/file.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 0d7cf0cc9b8756..86ea1d92839aac 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -595,7 +595,7 @@ static loff_t ext4_seek_data(struct file *file, loff_t offset, loff_t maxsize) inode_lock(inode); isize = i_size_read(inode); - if (offset >= isize) { + if (offset < 0 || offset >= isize) { inode_unlock(inode); return -ENXIO; } @@ -658,7 +658,7 @@ static loff_t ext4_seek_hole(struct file *file, loff_t offset, loff_t maxsize) inode_lock(inode); isize = i_size_read(inode); - if (offset >= isize) { + if (offset < 0 || offset >= isize) { inode_unlock(inode); return -ENXIO; } |