linux-kernel - Re: [PATCH] RDMA/erdma: Prevent use-after-free in erdma_accept

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Message-ID: <20250306084754.GR1955273@unreal>
Date: Thu, 6 Mar 2025 10:47:54 +0200
From: Leon Romanovsky <leon@...nel.org>
To: Cheng Xu <chengyou@...ux.alibaba.com>,
	Markus Elfring <Markus.Elfring@....de>
Cc: kernel-janitors@...r.kernel.org, linux-rdma@...r.kernel.org,
	Cheng Xu <chengyou@...ux.alibaba.com>,
	Jason Gunthorpe <jgg@...pe.ca>,
	Kai Shen <kaishen@...ux.alibaba.com>,
	Yang Li <yang.lee@...ux.alibaba.com>, cocci@...ia.fr,
	LKML <linux-kernel@...r.kernel.org>,
	Christophe Leroy <christophe.leroy@...roup.eu>
Subject: Re: [PATCH] RDMA/erdma: Prevent use-after-free in
 erdma_accept_newconn()

On Wed, Mar 05, 2025 at 03:20:41PM +0100, Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Wed, 5 Mar 2025 15:07:51 +0100
> 
> The implementation of the function “erdma_accept_newconn” contained
> still the statement “new_cep->sock = NULL” after
> the function call “erdma_cep_put(new_cep)”.
> Thus delete an inappropriate reset action.
> 
> Reported-by: Cheng Xu <chengyou@...ux.alibaba.com>

Cheng, please resubmit this patch, I'm experiencing the same issues as
Christophe has here https://lore.kernel.org/all/20a1a47c-8906-44e8-92e6-9b3e698b1491@web.de
and it looks like Markus continues do not listen to the feedback.

Thanks