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Subject: Re: mainline build failure due to 8295efbe68c0 ("md/raid1-10: factor
 out a helper to submit normal write")
To:     "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@gmail.com>,
        Song Liu <song@kernel.org>
Cc:     linux-raid@vger.kernel.org, linux-kernel@vger.kernel.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        regressions@lists.linux.dev
References: <ZJ2H5FWuo9oDMgPm@debian>
From:   Yu Kuai <yukuai1@huaweicloud.com>
Message-ID: <be9320b5-7613-be0f-ffcd-4b3041ea5836@huaweicloud.com>
Date:   Thu, 29 Jun 2023 21:56:11 +0800
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Hi,

?? 2023/06/29 21:32, Sudip Mukherjee (Codethink) д??:
> Hi All,
> 
> The latest mainline kernel branch fails to build x86_64, arm64 and arm allmodconfig

Thanks for the testing, which branch are you testing?

This problem is already fixed in latest mainline kernel:

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=b5a99602b74bbfa655be509c615181dd95b0719e

Kuai
> with clang (version 16.0.1), and the error is:
> 
> In file included from drivers/md/raid1.c:52:
> drivers/md/raid1-10.c:119:25: error: casting from randomized structure pointer type 'struct block_device *' to 'struct md_rdev *'
>          struct md_rdev *rdev = (struct md_rdev *)bio->bi_bdev;
>                                 ^
> 
> git bisect pointed to 8295efbe68c0 ("md/raid1-10: factor out a helper to submit normal write").
> 
> Reverting the commit has fixed the build failure.
> 
> I will be happy to test any patch or provide any extra log if needed.
> 
> #regzbot introduced: 8295efbe68c080047e98d9c0eb5cb933b238a8cb
>