On Mon, May 10, 2021 at 07:10:51PM +0800, Yang Yingliang wrote:

After commit c89128a00838 ("ext4: handle errors on ext4_commit_super"), 'ret' may
be set to 0 before calling ext4_fill_flex_info(), if ext4_fill_flex_info() fails
ext4_mount() doesn't return error code, it makes 'root' is null which causes
crash in legacy_get_tree().

Fixes: c89128a00838 ("ext4: handle errors on ext4_commit_super")
Reported-by: Hulk Robot <redacted>
Cc: <redacted> # v4.18+
Signed-off-by: Yang Yingliang <redacted>

Applied, thanks.

					- Ted