linux-kernel - [PATCH 5.10 0/1] RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests

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Message-ID: <20230721150535.191318-1-aagusev@ispras.ru>
Date:   Fri, 21 Jul 2023 18:05:32 +0300
From:   Anton Gusev <aagusev@...ras.ru>
To:     stable@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Anton Gusev <aagusev@...ras.ru>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Leon Romanovsky <leon@...nel.org>,
        Sasha Levin <sashal@...nel.org>,
        Mark Zhang <markzhang@...dia.com>,
        Håkon Bugge <haakon.bugge@...cle.com>,
        Michael Guralnik <michaelgur@...dia.com>,
        Roland Dreier <rolandd@...co.com>,
        Sean Hefty <sean.hefty@...el.com>, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org
Subject: [PATCH 5.10 0/1] RDMA/cma: Ensure rdma_addr_cancel() happens before issuing more requests

Syzkaller reports use-after-free at addr_handler in 5.10 stable
releases. The problem was fixed in upstream and backported into
5.14, but wasn't applied to 5.10 and lower versions due to a small
merge conflict.

This patch is a modified version that can be cleanly applied to 5.10 and
5.4 stable branches.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.