From: Darrick J. Wong Date: Wed, 12 Jul 2017 17:26:47 +0000 (-0700) Subject: vfs: in iomap seek_{hole,data}, return -ENXIO for negative offsets X-Git-Tag: v4.13-rc1~11^2 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=d6ab17f261919d212ec0a9e33d01f46df0ec1fde;p=linux-block.git vfs: in iomap seek_{hole,data}, return -ENXIO for negative offsets In the iomap implementations of SEEK_HOLE and SEEK_DATA, make sure we return -ENXIO for negative offsets. Inspired-by: Mateusz S Signed-off-by: Darrick J. Wong --- diff --git a/fs/iomap.c b/fs/iomap.c index 432eed8f091f..16f5c07451bf 100644 --- a/fs/iomap.c +++ b/fs/iomap.c @@ -610,8 +610,8 @@ iomap_seek_hole(struct inode *inode, loff_t offset, const struct iomap_ops *ops) loff_t length = size - offset; loff_t ret; - /* Nothing to be found beyond the end of the file. */ - if (offset >= size) + /* Nothing to be found before or beyond the end of the file. */ + if (offset < 0 || offset >= size) return -ENXIO; while (length > 0) { @@ -656,8 +656,8 @@ iomap_seek_data(struct inode *inode, loff_t offset, const struct iomap_ops *ops) loff_t length = size - offset; loff_t ret; - /* Nothing to be found beyond the end of the file. */ - if (offset >= size) + /* Nothing to be found before or beyond the end of the file. */ + if (offset < 0 || offset >= size) return -ENXIO; while (length > 0) {