In the context of a CB_NOTIFY callback, we may not have easy access to a svc_export. nfsd will not currently grant a delegation on a the V4 root however, so this should be safe. Signed-off-by: Jeff Layton --- fs/nfsd/nfs4xdr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 9a463f9c8a67704d90d1551b7de59e4e89a2a81d..d1eba4bd8be243022f89f6ac58067c5469a8feba 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3027,7 +3027,7 @@ static __be32 nfsd4_encode_fattr4_change(struct xdr_stream *xdr, { const struct svc_export *exp = args->exp; - if (unlikely(exp->ex_flags & NFSEXP_V4ROOT)) { + if (exp && unlikely(exp->ex_flags & NFSEXP_V4ROOT)) { u32 flush_time = convert_to_wallclock(exp->cd->flush_time); if (xdr_stream_encode_u32(xdr, flush_time) != XDR_UNIT) -- 2.51.0