linux-kernel - [PATCH v4 0/1] nvmet-tcp: Fix NULL pointer dereference during release

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Message-Id: <20220913014253.931724-1-pizhenwei@bytedance.com>
Date:   Tue, 13 Sep 2022 09:42:52 +0800
From:   zhenwei pi <pizhenwei@...edance.com>
To:     hch@....de, sagi@...mberg.me
Cc:     kch@...dia.com, linux-nvme@...ts.infradead.org,
        linux-kernel@...r.kernel.org, fmdefrancesco@...il.com,
        zhenwei pi <pizhenwei@...edance.com>
Subject: [PATCH v4 0/1] nvmet-tcp: Fix NULL pointer dereference during release

Hi, Sagi
I notice that this series "nvmet-tcp: Don't map pages which can't come from HIGHMEM"
has no reply for two weeks. Is it possible to fix this critical issue firstly?
Cc: Fabio M. De Francesco <fmdefrancesco@...il.com>

v3 -> v4:
- free CMD buffers only nvmet_tcp_need_data_in().

v2 -> v3:
- Keep original function name as nvmet_tcp_uninit_data_in_cmds()
- Add new function nvmet_tcp_free_cmd_data_in_buffers() to free CMD buffers
- Rework against http://git.infradead.org/nvme.git/shortlog/refs/heads/nvme-6.0
- Move nvmet_tcp_free_cmd_data_in_buffers() after cancel_work_sync(&queue->io_work).
  Hi @Sagi, if you still prefer to clear the commands that are still waiting for
  data from the wire, please let me know.

v1 -> v2:
- Separate nvmet_tcp_uninit_data_in_cmds() into nvmet_tcp_uninit_req()
  & nvmet_tcp_uninit_data_in_cmds()(free buffers only).

v1:
- Move nvmet_tcp_uninit_data_in_cmds() after nvmet_sq_destroy()

zhenwei pi (1):
  nvmet-tcp: Fix NULL pointer dereference during release

 drivers/nvme/target/tcp.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

-- 
2.20.1