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[ Upstream commit18ebd35b61] vfs_lock_file() expects the struct file_lock to be fully initialised by the caller. Re-exported NFSv3 has been seen to Oops if the fl_file field is NULL. Fixes:aec158242b("lockd: set fl_owner when unlocking files") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216582 Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>