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Message-ID: <1416b648-188f-873a-08b3-c8e8494ab1a7@kernel.dk>
Date:   Fri, 7 Apr 2023 12:44:52 -0600
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Subject: Re: [PATCH v2 0/3] blk-cgroup: some cleanup
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To:     Bart Van Assche <bvanassche@acm.org>,
        Chengming Zhou <zhouchengming@bytedance.com>, tj@kernel.org
Cc:     paolo.valente@linaro.org, josef@toxicpanda.com,
        linux-block@vger.kernel.org, cgroups@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20230406145050.49914-1-zhouchengming@bytedance.com>
 <cab869b1-1cba-5698-55eb-a93d0596c869@acm.org>
From:   Jens Axboe <axboe@kernel.dk>
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On 4/7/23 12:41 PM, Bart Van Assche wrote:
> On 4/6/23 07:50, Chengming Zhou wrote:
>> These are some cleanup patches of blk-cgroup. Thanks for review.
> 
> With these patches applied, my kernel test VM crashes during boot. The following crash disappears if I revert these patches:
> 
> BUG: KASAN: null-ptr-deref in bio_associate_blkg_from_css+0x83/0x240

Would be useful in the report to know where that is, as it doesn't include
the code output.

-- 
Jens Axboe