| From | David Howells <> | Subject | [PATCH v21 02/30] splice: Make filemap_splice_read() check s_maxbytes | Date | Sat, 20 May 2023 01:00:21 +0100 |
| |
Make filemap_splice_read() check s_maxbytes analogously to filemap_read().
Signed-off-by: David Howells <dhowells@redhat.com> cc: Christoph Hellwig <hch@lst.de> cc: Steve French <stfrench@microsoft.com> cc: Jens Axboe <axboe@kernel.dk> cc: Al Viro <viro@zeniv.linux.org.uk> cc: David Hildenbrand <david@redhat.com> cc: John Hubbard <jhubbard@nvidia.com> cc: linux-mm@kvack.org cc: linux-block@vger.kernel.org cc: linux-fsdevel@vger.kernel.org --- mm/filemap.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/mm/filemap.c b/mm/filemap.c index a2006936a6ae..0fcb0b80c2e2 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2887,6 +2887,9 @@ ssize_t filemap_splice_read(struct file *in, loff_t *ppos, bool writably_mapped; int i, error = 0; + if (unlikely(*ppos >= in->f_mapping->host->i_sb->s_maxbytes)) + return 0; + init_sync_kiocb(&iocb, in); iocb.ki_pos = *ppos;
|