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Message-ID: <e2d47b6c-3420-4785-8e04-e5f217d09a46@leemhuis.info>
Date:   Thu, 7 Dec 2023 14:58:13 +0100
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Subject: Re: md raid6 oops in 6.6.4 stable
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To:     Bagas Sanjaya <bagasdotme@gmail.com>,
        Genes Lists <lists@sapience.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>,
        Guoqing Jiang <guoqing.jiang@linux.dev>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>
References: <6e6816dd-2ec5-4bca-9558-60cfde46ef8c@sapience.com>
 <ZXHJEkwIJ5zKTMjV@archie.me>
From:   Thorsten Leemhuis <regressions@leemhuis.info>
In-Reply-To: <ZXHJEkwIJ5zKTMjV@archie.me>
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On 07.12.23 14:30, 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.
> 
> Can you confirm that culprit by bisection?

Bagas, I know you are trying to help, but sorry, I'd say this is not
helpful at all -- any maybe even harmful.

From the quoted texts it's pretty clear that the reporter knows that a
bisection would be helpful, but currently is unable to perform one --
and even states reasons for reporting it without having it bisected. So
your message afaics doesn't bring anything new to the table; and I might
be wrong with that, but I fear some people in a situation like this
might even be offended by a reply like that, as it states something
already obvious.

Ciao, Thorsten