Commit a6529588 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

io_uring/region: fix error codes after failed vmap 



io_create_region() jumps after a vmap failure without setting the return
code, it could be 0 or just uninitialised.

Fixes: dfbbfbf1 ("io_uring: introduce concept of memory regions")
Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/0abac19dbf81c061cffaa9534a2471ed5460ad3e.1731803848.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent d617b314

io_uring/memmap.c

+3 −1
Original line number Diff line number Diff line
@@ -247,8 +247,10 @@ int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr, 
	}



	vptr = vmap(pages, nr_pages, VM_MAP, PAGE_KERNEL);

	if (!vptr)

	if (!vptr) {

		ret = -ENOMEM;

		goto out_free;

	}



	mr->pages = pages;

	mr->vmap_ptr = vptr;