From f37d614b856134dfd891d227135dc9a25b45af67 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 16 Jun 2026 07:58:56 -0400 Subject: nfsd: allow nfsd4_encode_fattr4_change() to work with no export 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 Acked-by: Chuck Lever Link: https://patch.msgid.link/20260616-dir-deleg-v7-13-6cbc7eac0ade@kernel.org Signed-off-by: Chuck Lever --- 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 23419423f7b0..f50027712d71 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -3277,7 +3277,7 @@ 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) -- cgit v1.2.3