From cae361187e7e1e3545353fb560c032cdace32d5f Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Sun, 10 Mar 2024 17:23:21 +0100
Subject: [PATCH] Prevent down-recursion for side traces.

Thanks to Sergey Kaplun. #1169
---
 src/lj_record.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/lj_record.c b/src/lj_record.c
index 35e6d6e1..f2a06f41 100644
--- a/src/lj_record.c
+++ b/src/lj_record.c
@@ -728,7 +728,7 @@ void lj_record_ret(jit_State *J, BCReg rbase, ptrdiff_t gotresults)
     if ((pt->flags & PROTO_NOJIT))
       lj_trace_err(J, LJ_TRERR_CJITOFF);
     if (J->framedepth == 0 && J->pt && frame == J->L->base - 1) {
-      if (check_downrec_unroll(J, pt)) {
+      if (!J->cur.root && check_downrec_unroll(J, pt)) {
 	J->maxslot = (BCReg)(rbase + gotresults);
 	lj_snap_purge(J);
 	rec_stop(J, LJ_TRLINK_DOWNREC, J->cur.traceno);  /* Down-recursion. */