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Message-ID: <714b22c7-b8dd-008d-a1ea-a184dc8ec1cf@linux.dev>
Date:   Thu, 7 Dec 2023 22:42:44 +0800
MIME-Version: 1.0
Subject: Re: md raid6 oops in 6.6.4 stable
To:     Genes Lists <lists@sapience.com>,
        Bagas Sanjaya <bagasdotme@gmail.com>, snitzer@kernel.org,
        song@kernel.org, yukuai3@huawei.com, axboe@kernel.dk,
        mpatocka@redhat.com, heinzm@redhat.com,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux RAID <linux-raid@vger.kernel.org>,
        Linux Regressions <regressions@lists.linux.dev>
Cc:     Bhanu Victor DiCara <00bvd0+linux@gmail.com>,
        Xiao Ni <xni@redhat.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
References: <6e6816dd-2ec5-4bca-9558-60cfde46ef8c@sapience.com>
 <ZXHJEkwIJ5zKTMjV@archie.me>
 <be56b5df-fef8-4dbe-bb98-f6370a692d6e@sapience.com>
Content-Language: en-US
From:   Guoqing Jiang <guoqing.jiang@linux.dev>
In-Reply-To: <be56b5df-fef8-4dbe-bb98-f6370a692d6e@sapience.com>
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Hi,

On 12/7/23 21:55, Genes Lists wrote:
> On 12/7/23 08:30, Bagas Sanjaya wrote:
>> On Thu, Dec 07, 2023 at 08:10:04AM -0500, Genes Lists wrote:
>>> I have not had chance to git bisect this but since it happened in 
>>> stable I
>>> thought it was important to share sooner than later.
>>>
>>> One possibly relevant commit between 6.6.3 and 6.6.4 could be:
>>>
>>>    commit 2c975b0b8b11f1ffb1ed538609e2c89d8abf800e
>>>    Author: Song Liu <song@kernel.org>
>>>    Date:   Fri Nov 17 15:56:30 2023 -0800
>>>
>>>      md: fix bi_status reporting in md_end_clone_io
>>>
>>> log attached shows page_fault_oops.
>>> Machine was up for 3 days before crash happened.

Could you decode the oops (I can't find it in lore for some reason) 
([1])? And
can it be reproduced reliably? If so, pls share the reproduce step.

[1]. https://lwn.net/Articles/592724/

Thanks,
Guoqing