2022-10-27 04:53:02

by Ryusuke Konishi

[permalink] [raw]
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(-)

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2.34.1