Testing for netrom: fix KASAN slab-use-after-free in nr_dec_obs()

From: Prithvi Tambewagh

Date: Sat Jan 17 2026 - 01:53:27 EST


#syz test upstream be548645527a131a097fdc884b7fca40c8b86231

Signed-off-by: Prithvi Tambewagh <activprithvi@xxxxxxxxx>
---
net/netrom/nr_route.c | 1 -
1 file changed, 1 deletion(-)

diff --git a/net/netrom/nr_route.c b/net/netrom/nr_route.c
index b94cb2ffbaf8..788e375537fe 100644
--- a/net/netrom/nr_route.c
+++ b/net/netrom/nr_route.c
@@ -466,7 +466,6 @@ static int nr_dec_obs(void)
nr_neigh = s->routes[i].neighbour;

nr_neigh->count--;
- nr_neigh_put(nr_neigh);

if (nr_neigh->count == 0 && !nr_neigh->locked)
nr_remove_neigh(nr_neigh);

base-commit: be548645527a131a097fdc884b7fca40c8b86231
--
2.34.1