tree dae3896eeca27d45d49a50115a217e211c1171be
parent f83ec76bf285bea5727f478a68b894f5543ca76e
author Al Viro <viro@zeniv.linux.org.uk> 1758039372 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1758039372 -0400

nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing

Theoretically it's an oopsable race, but I don't believe one can manage
to hit it on real hardware; might become doable on a KVM, but it still
won't be easy to attack.

Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of
put_unaligned_be64(), we can put that under ->d_lock and be done with that.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>