linux-kernel - mainline build failure due to 8295efbe68c0 ("md/raid1-10: factor out a helper to submit normal write")

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Message-ID: <ZJ2H5FWuo9oDMgPm@debian>
Date:   Thu, 29 Jun 2023 14:32:20 +0100
From:   "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@...il.com>
To:     Yu Kuai <yukuai3@...wei.com>, Song Liu <song@...nel.org>
Cc:     linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        regressions@...ts.linux.dev
Subject: mainline build failure due to 8295efbe68c0 ("md/raid1-10: factor out
 a helper to submit normal write")

Hi All,

The latest mainline kernel branch fails to build x86_64, arm64 and arm allmodconfig
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

-- 
Regards
Sudip