The branch stable/13 has been updated by melifaro:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=4757126074bbaf542353ea081cc73b30af8e0644

commit 4757126074bbaf542353ea081cc73b30af8e0644
Author:     Alexander V. Chernikov <[email protected]>
AuthorDate: 2022-12-30 15:54:06 +0000
Commit:     Alexander V. Chernikov <[email protected]>
CommitDate: 2023-01-13 21:24:12 +0000

    routing: add missed RIB_WUNLOCK in the add_route_flags().
    
    MFC after:      2 weeks
    
    (cherry picked from commit 06e879593a445dd785d531a06fb19ab68076985b)
---
 sys/net/route/route_ctl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/net/route/route_ctl.c b/sys/net/route/route_ctl.c
index d6c382735902..eaabe901b3cb 100644
--- a/sys/net/route/route_ctl.c
+++ b/sys/net/route/route_ctl.c
@@ -793,6 +793,7 @@ add_route_flags(struct rib_head *rnh, struct rtentry *rt, 
struct route_nhop_data
        if (op_flags & RTM_F_REPLACE) {
                if (nhop_get_prio(rnd_orig.rnd_nhop) > 
nhop_get_prio(rnd_add->rnd_nhop)) {
                        /* Old path is "better" (e.g. has PINNED flag set) */
+                       RIB_WUNLOCK(rnh);
                        error = EEXIST;
                        goto out;
                }

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