From: Fengnan Chang changfengnan@vivo.com
stable inclusion from linux-4.19.191 commit 353b8d3bd324ecc3097d09d8c405d25e0f75ec7f
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commit f88f1466e2a2e5ca17dfada436d3efa1b03a3972 upstream.
We should set the error code when ext4_commit_super check argument failed. Found in code review. Fixes: c4be0c1dc4cdc ("filesystem freeze: add error handling of write_super_lockfs/unlockfs").
Cc: stable@kernel.org Signed-off-by: Fengnan Chang changfengnan@vivo.com Reviewed-by: Andreas Dilger adilger@dilger.ca Link: https://lore.kernel.org/r/20210402101631.561-1-changfengnan@vivo.com Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- fs/ext4/super.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index fcb1f5d3b09ec..a964ed63601c6 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -5247,8 +5247,10 @@ static int ext4_commit_super(struct super_block *sb) struct buffer_head *sbh = EXT4_SB(sb)->s_sbh; int error = 0;
- if (!sbh || block_device_ejected(sb)) - return error; + if (!sbh) + return -EINVAL; + if (block_device_ejected(sb)) + return -ENODEV;
ext4_update_super(sb);