Suricata

It crashes while evaluating a rule, do you know which rule? Can you share the filestore rules you use?

yes, as same as I test with this simple rule: "alert nfs any any -> any any (msg:"FILE store in NFS"; filestore; sid:3; rev:1;)".

Thanks. I've created a ticket for 4.1.x as well as it has the same issue (if RUST is enabled).

Can you try:

commit fdfc1715adc55f7e710bb6d5426a256c4d56199b (HEAD -> fix/nfs-filestore/v1)
Author: Victor Julien <victor@inliniac.net>
Date:   Thu Oct 24 14:51:48 2019 +0200

    filestore: don't assume flow is TCP

    Filestore can be used by UDP based protocols as well. NFSv2 is one
    that Suricata supports.

    Bug #3277.

diff --git a/src/detect-filestore.c b/src/detect-filestore.c
index a4bdc249d..c2d1340c2 100644
--- a/src/detect-filestore.c
+++ b/src/detect-filestore.c
@@ -209,10 +209,11 @@ static int DetectFilestorePostMatch(DetectEngineThreadCtx *det_ctx,
 #endif
     }

-    /* set filestore depth for stream reassembling */
-    TcpSession *ssn = (TcpSession *)p->flow->protoctx;
-    TcpSessionSetReassemblyDepth(ssn, FileReassemblyDepth());
-
+    if (p->proto == IPPROTO_TCP && p->flow->protoctx != NULL) {
+        /* set filestore depth for stream reassembling */
+        TcpSession *ssn = (TcpSession *)p->flow->protoctx;
+        TcpSessionSetReassemblyDepth(ssn, FileReassemblyDepth());
+    }
     if (p->flowflags & FLOW_PKT_TOCLIENT)
         flags |= STREAM_TOCLIENT;
     else

I test new version suricata with this fixed code just now. It work well. And I find the dump file with nfsv2.pcap and nfsv3.pcap. But please test more to make sure really no problem because I am a learner and know a little about it.