linux-kernel - [PATCH 0/2] nilfs2: fix UBSAN shift-out-of-bounds warnings on mount time

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Message-Id: <20221027044306.42774-1-konishi.ryusuke@gmail.com>
Date:   Thu, 27 Oct 2022 13:43:04 +0900
From:   Ryusuke Konishi <konishi.ryusuke@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-nilfs <linux-nilfs@...r.kernel.org>,
        syzbot <syzbot+e91619dd4c11c4960706@...kaller.appspotmail.com>,
        syzkaller-bugs@...glegroups.com,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/2] nilfs2: fix UBSAN shift-out-of-bounds warnings on mount time

Hi Andrew,

please apply the following bug fixes to -mm tree:

Ryusuke Konishi (2):
  nilfs2: fix shift-out-of-bounds/overflow in nilfs_sb2_bad_offset()
  nilfs2: fix shift-out-of-bounds due to too large exponent of block
    size

The first patch fixes a reported bug by syzbot, and the second one
fixes the remaining bug of the same kind.  Although they are triggered
by the same super block data anomaly, I divided it into the above two
because the details of the issues and how to fix it are different.

Both are required to eliminate the shift-out-of-bounds issues on mount time.

Thanks,
Ryusuke Konishi

 fs/nilfs2/the_nilfs.c | 73 ++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 65 insertions(+), 8 deletions(-)

-- 
2.34.1