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io_uring/zcrx: improve types for size calculation

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Make sure io_import_umem() promotes the type to long before calculating
the area size. While the area size is capped at 1GB by
io_validate_user_buf_range() and fits into an "int", it's still too
error prone.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2026-02-05 18:04:43 +00:00
committed by Jens Axboe
parent daa0b901f8
commit 417d029dc4
1 changed files with 1 additions and 1 deletions
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2
io_uring/zcrx.c
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@@ -193,7 +193,7 @@ static int io_import_umem(struct io_zcrx_ifq *ifq,
return PTR_ERR(pages);
ret = sg_alloc_table_from_pages(&mem->page_sg_table, pages, nr_pages,
0, nr_pages << PAGE_SHIFT,
0, (unsigned long)nr_pages << PAGE_SHIFT,
GFP_KERNEL_ACCOUNT);
if (ret) {
unpin_user_pages(pages, nr_pages);