netdev - Re: [PATCH 1/5] io_uring: Fix leak of async data when connect prep fails

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Message-ID: <d071a3f8-c4af-48ef-adae-385ea8705377@kernel.dk>
Date: Fri, 31 May 2024 15:30:19 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Gabriel Krisman Bertazi <krisman@...e.de>
Cc: io-uring@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH 1/5] io_uring: Fix leak of async data when connect prep
 fails

On 5/31/24 3:12 PM, Gabriel Krisman Bertazi wrote:
> move_addr_to_kernel can fail, like if the user provides a bad sockaddr
> pointer. In this case where the failure happens on ->prep() we don't
> have a chance to clean the request later, so handle it here.

Hmm, that should still get freed in the cleanup path? It'll eventually
go on the compl_reqs list, and it has REQ_F_ASYNC_DATA set. Yes it'll
be slower than the recycling it, but that should not matter as it's
an erred request.

-- 
Jens Axboe