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 <hulkci@xxxxxxxxxx> > Cc: <stable@xxxxxxxxxxxxxxx> # v4.18+ > Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx> Applied, thanks. - Ted