X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=io_uring%2Fkbuf.c;h=e2c46889d5fab614dbeb6b26a8a696d778709b8d;hb=faf68e3523c21d07c5f7fdabd0daf6301ff8db3f;hp=25cd724ade184ac452463d18e134d7e3ae469503;hpb=305a72efa791c826fe84768ca55e31adc4113ea8;p=platform%2Fkernel%2Flinux-starfive.git

diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c
index 25cd724..e2c4688 100644
--- a/io_uring/kbuf.c
+++ b/io_uring/kbuf.c
@@ -346,6 +346,8 @@ int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe
 	tmp = READ_ONCE(sqe->off);
 	if (tmp > USHRT_MAX)
 		return -E2BIG;
+	if (tmp + p->nbufs >= USHRT_MAX)
+		return -EINVAL;
 	p->bid = tmp;
 	return 0;
 }