Christoph Hellwig wrote on Fri, Jul 10, 2020: > p9_fd_open just fgets file descriptors passed in from userspace, but > doesn't verify that they are valid for read or writing. This gets > cought down in the VFS when actually attemping a read or write, but a > new warning added in linux-next upsets syzcaller. > > Fix this by just verifying the fds early on. > > Reported-by: syzbot+e6f77e16ff68b2434...@syzkaller.appspotmail.com > Signed-off-by: Christoph Hellwig <h...@lst.de>
Looks good to me, I'll pick it up shortly. -- Dominique
