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ocfs2: add inline inode consistency check to ocfs2_validate_inode_block()

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In 'ocfs2_validate_inode_block()', add an extra check whether an inode
with inline data (i.e.  self-contained) has no clusters, thus preventing
an invalid inode from being passed to 'ocfs2_evict_inode()' and below.

Link: https://lkml.kernel.org/r/20251023141650.417129-1-dmantipov@yandex.ru
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Reported-by: syzbot+c16daba279a1161acfb0@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=c16daba279a1161acfb0
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Heming Zhao <heming.zhao@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Dmitry Antipov 2025-10-23 17:16:50 +03:00 committed by Andrew Morton
parent 6e89373cec
commit a2b1c419ff
1 changed files with 8 additions and 0 deletions
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8
fs/ocfs2/inode.c
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@ -1505,6 +1505,14 @@ int ocfs2_validate_inode_block(struct super_block *sb,
goto bail;
}
if ((le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL) &&
le32_to_cpu(di->i_clusters)) {
rc = ocfs2_error(sb, "Invalid dinode %llu: %u clusters\n",
(unsigned long long)bh->b_blocknr,
le32_to_cpu(di->i_clusters));
goto bail;
}
rc = 0;
bail: