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linux/fs/minix
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Jori Koolstra 31fefc1809 minix: Add required sanity checking to minix_check_superblock() 
[ Upstream commit 8c97a6ddc9 ]

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>
History 2026-03-04 07:19:31 -05:00
..
bitmap.c minix: convert to new timestamp accessors 2023-10-18 14:08:23 +02:00
dir.c fs: Remove three arguments from block_write_end() 2025-06-24 15:53:40 +02:00
file.c fs: convert simple use of generic_file_*_mmap() to .mmap_prepare() 2025-06-17 13:47:45 +02:00
inode.c minix: Add required sanity checking to minix_check_superblock() 2026-03-04 07:19:31 -05:00
itree_common.c minix: convert to new timestamp accessors 2023-10-18 14:08:23 +02:00
itree_v1.c fs/minix: remove expected error message in block_to_path() 2020-08-12 10:58:00 -07:00
itree_v2.c fs/minix: remove expected error message in block_to_path() 2020-08-12 10:58:00 -07:00
Kconfig fs: add CONFIG_BUFFER_HEAD 2023-08-02 09:13:09 -06:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
minix.h minixfs: Convert minix_prepare_chunk() to take a folio 2024-08-07 11:31:57 +02:00
namei.c Change inode_operations.mkdir to return struct dentry * 2025-02-27 20:00:17 +01:00