Commit 1bd8d6cd authored Aug 24, 2017 by Darrick J. Wong Committed by Theodore Ts'o Aug 24, 2017

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

parent 901ed070

fs/ext4/file.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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;
		}