jfs: fix shift-out-of-bounds in dbJoin

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[ Upstream commit cca974daeb ]

Currently while joining the leaf in a buddy system there is shift out
of bound error in calculation of BUDSIZE. Added the required check
to the BUDSIZE and fixed the documentation as well.

Reported-by: syzbot+411debe54d318eaed386@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=411debe54d318eaed386
Signed-off-by: Manas Ghandat <ghandatmanas@gmail.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Manas Ghandat 2023-10-11 20:09:37 +05:30 • committed by Greg Kroah-Hartman

parent 3999d26986

commit 0b24b79410

1 changed files with 7 additions and 1 deletions

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fs/jfs/jfs_dmap.c

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