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io_uring: don't free never created regions

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io_free_region() tolerates empty regions but there is no reason to that
either. If the first io_create_region() in io_register_resize_rings()
fails, just return the error without attempting to clean it up.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov
2025-10-16 14:23:21 +01:00
committed by Jens Axboe
parent 0c89dbbcad
commit 6e9752977c
1 changed files with 2 additions and 3 deletions
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5
io_uring/register.c
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@@ -432,10 +432,9 @@ static int io_register_resize_rings(struct io_ring_ctx *ctx, void __user *arg)
rd.flags |= IORING_MEM_REGION_TYPE_USER;
}
ret = io_create_region(ctx, &n.ring_region, &rd, IORING_OFF_CQ_RING);
if (ret) {
io_register_free_rings(ctx, &n);
if (ret)
return ret;
}
n.rings = io_region_get_ptr(&n.ring_region);
/*