ext4: do not BUG when INLINE_DATA_FL lacks system.data xattr

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[ Upstream commit 099b847ccc ]

A syzbot fuzzed image triggered a BUG_ON in ext4_update_inline_data()
when an inode had the INLINE_DATA_FL flag set but was missing the
system.data extended attribute.

Since this can happen due to a maiciouly fuzzed file system, we
shouldn't BUG, but rather, report it as a corrupted file system.

Add similar replacements of BUG_ON with EXT4_ERROR_INODE() ii
ext4_create_inline_data() and ext4_inline_data_truncate().

Reported-by: syzbot+544248a761451c0df72f@syzkaller.appspotmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Theodore Ts'o 2025-07-17 10:54:34 -04:00 • committed by Greg Kroah-Hartman

parent 8843a56f32

commit 2817ac83cb

1 changed files with 16 additions and 3 deletions

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fs/ext4/inline.c

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