From: Dan Carpenter Date: Wed, 20 Nov 2024 09:15:05 +0000 (+0300) Subject: io_uring/region: return negative -E2BIG in io_create_region() X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=2ae6bdb1e145af0a47253953132decbd2d52f4b2;p=users%2Fjedix%2Flinux-maple.git io_uring/region: return negative -E2BIG in io_create_region() This code accidentally returns positivie E2BIG instead of negative -E2BIG. The callers treat negatives and positives the same so this doesn't affect the kernel. The error code is returned to userspace via the system call. Fixes: dfbbfbf19187 ("io_uring: introduce concept of memory regions") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/d8ea3bef-74d8-4f77-8223-6d36464dd4dc@stanley.mountain Signed-off-by: Jens Axboe --- diff --git a/io_uring/memmap.c b/io_uring/memmap.c index 6e6ee79ba94fc..3d71756bc598a 100644 --- a/io_uring/memmap.c +++ b/io_uring/memmap.c @@ -229,7 +229,7 @@ int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr, if (!reg->size || reg->mmap_offset || reg->id) return -EINVAL; if ((reg->size >> PAGE_SHIFT) > INT_MAX) - return E2BIG; + return -E2BIG; if ((reg->user_addr | reg->size) & ~PAGE_MASK) return -EINVAL; if (check_add_overflow(reg->user_addr, reg->size, &end))