From: Pavel Begunkov <asml.silence@gmail.com>
Date: Wed, 5 Nov 2025 15:47:01 +0000 (+0000)
Subject: io_uring: fix types for region size calulation
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1fd5367391bf0eeb09e624c4ab45121b54eaab96;p=thirdparty%2Fkernel%2Flinux.git

io_uring: fix types for region size calulation

->nr_pages is int, it needs type extension before calculating the region
size.

Fixes: a90558b36ccee ("io_uring/memmap: helper for pinning region pages")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
[axboe: style fixup]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/io_uring/memmap.c b/io_uring/memmap.c
index 2e99dffddfc5..add03ca75cb9 100644
--- a/io_uring/memmap.c
+++ b/io_uring/memmap.c
@@ -135,7 +135,7 @@ static int io_region_pin_pages(struct io_ring_ctx *ctx,
 				struct io_mapped_region *mr,
 				struct io_uring_region_desc *reg)
 {
-	unsigned long size = mr->nr_pages << PAGE_SHIFT;
+	unsigned long size = (size_t) mr->nr_pages << PAGE_SHIFT;
 	struct page **pages;
 	int nr_pages;