If the request being processed is not a v4 compound request, then examining the cstate can have undefined results. This patch adds a check that the rpc procedure being execute (rq_procinfo) is the NFSPROC4_COMPOUND procedure. Reported-by: Olga Kornievskaia <okorniev@xxxxxxxxxx> Signed-off-by: NeilBrown <neil@xxxxxxxxxx> --- fs/nfsd/nfs4proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 5860f3825be2..7295776b4ccb 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -3768,7 +3768,8 @@ bool nfsd4_spo_must_allow(struct svc_rqst *rqstp) struct nfs4_op_map *allow = &cstate->clp->cl_spo_must_allow; u32 opiter; - if (!cstate->minorversion) + if (rqstp->rq_procinfo != &nfsd_version4.vs_proc[NFSPROC4_COMPOUND] || + cstate->minorversion == 0) return false; if (cstate->spo_must_allowed) -- 2.48.1
