tree 4978b5a77ed5f8f0e9923e8d8340917e578e72a9
parent b7a9a503c38d665c05a789132b632d81ec0b2703
author Prince Kumar Maurya <princekumarmaurya06@gmail.com> 1685496701 -0700
committer Christian Brauner <brauner@kernel.org> 1685605866 +0200

fs/sysv: Null check to prevent null-ptr-deref bug

sb_getblk(inode->i_sb, parent) return a null ptr and taking lock on
that leads to the null-ptr-deref bug.

Reported-by: syzbot+aad58150cbc64ba41bdc@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=aad58150cbc64ba41bdc
Signed-off-by: Prince Kumar Maurya <princekumarmaurya06@gmail.com>
Message-Id: <20230531013141.19487-1-princekumarmaurya06@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>