ext4: fix uninitialized variable in ext4_inlinedir_to_tree

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[ Upstream commit 8dc9c3da79 ]

Syzbot has found an uninit-value bug in ext4_inlinedir_to_tree

This error happens because ext4_inlinedir_to_tree does not
handle the case when ext4fs_dirhash returns an error

This can be avoided by checking the return value of ext4fs_dirhash
and propagating the error,
similar to how it's done with ext4_htree_store_dirent

Signed-off-by: Xiaxi Shen <shenxiaxi26@gmail.com>
Reported-and-tested-by: syzbot+eaba5abe296837a640c0@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=eaba5abe296837a640c0
Link: https://patch.msgid.link/20240501033017.220000-1-shenxiaxi26@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Xiaxi Shen 2024-04-30 20:30:17 -07:00 • committed by Greg Kroah-Hartman

parent 850304152d

commit e7abdad660

1 changed files with 5 additions and 1 deletions

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fs/ext4/inline.c

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