linux-kernel - Re: [PATCH v2] nvme: fix double blk_mq_complete_request for timeout request with low probability

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Message-ID: <ce8d7dce-ac20-91d7-bbb5-db80997b0730@nvidia.com>
Date:   Sat, 8 Apr 2023 08:14:46 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     Lei Lei2 Yin <yinlei2@...ovo.com>,
        "kbusch@...nel.org" <kbusch@...nel.org>,
        "axboe@...com" <axboe@...com>, "hch@....de" <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>
CC:     "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "cybeyond@...mail.com" <cybeyond@...mail.com>
Subject: Re: [PATCH v2] nvme: fix double blk_mq_complete_request for timeout
 request with low probability

On 4/8/23 01:04, Chaitanya Kulkarni wrote:
>
>> [ 2777.253091]  <TASK>
>> [ 2777.253102]  nvme_failover_req+0x10a/0x120 [nvme_core]
>> [ 2777.255302]  blk_complete_reqs+0x3e/0x60
>> [ 2777.255726]  __do_softirq+0xb6/0x2ad
>> [ 2777.256139]  ? __pfx_smpboot_thread_fn+0x10/0x10
>> [ 2777.256556]  run_ksoftirqd+0x28/0x40
>> [ 2777.256978]  smpboot_thread_fn+0xdb/0x1d0
>> [ 2777.257399]  kthread+0xd7/0x100
>> [ 2777.257827]  ? __pfx_kthread+0x10/0x10
>> [ 2777.258253]  ret_from_fork+0x29/0x50
>> [ 2777.258695]  </TASK>
>>
>> Signed-off-by: Lei Yin <yinlei2@...ovo.com>
>> ---
>>
> Can you please add blktests for this fix under nvme category ?
>
>

When you do please CC me and Shinichiro (shinichiro.kawasaki@....com).

-ck