Jori Koolstra aed06b0e7d minix: Add required sanity checking to minix_check_superblock() ...

[ Upstream commit 8c97a6ddc95690a938ded44b4e3202f03f15078c ]

The fs/minix implementation of the minix filesystem does not currently
support any other value for s_log_zone_size than 0. This is also the
only value supported in util-linux; see mkfs.minix.c line 511. In
addition, this patch adds some sanity checking for the other minix
superblock fields, and moves the minix_blocks_needed() checks for the
zmap and imap also to minix_check_super_block().

This also closes a related syzbot bug report.

Signed-off-by: Jori Koolstra <jkoolstra@xs4all.nl>
Link: https://patch.msgid.link/20251208153947.108343-1-jkoolstra@xs4all.nl
Reviewed-by: Jan Kara <jack@suse.cz>
Reported-by: syzbot+5ad0824204c7bf9b67f2@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=5ad0824204c7bf9b67f2
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Ulrich Hecht <uli@kernel.org>

2026-04-12 13:56:45 +08:00

..

bitmap.c

…

dir.c

…

file.c

…

inode.c

…

itree_common.c

…

itree_v1.c

…

itree_v2.c

…

Kconfig

…

Makefile

…

minix.h

…

namei.c

…