From: Wang Liang <wangliang74@huawei.com>
To: <syzbot+3df59a64502c71cab3d5@syzkaller.appspotmail.com>
Cc: <syzkaller-bugs@googlegroups.com>, <steffen.klassert@secunet.com>,
<herbert@gondor.apana.org.au>, <davem@davemloft.net>,
<edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>,
<horms@kernel.org>, <netdev@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <yuehaibing@huawei.com>,
<zhangchangzhong@huawei.com>, <wangliang74@huawei.com>
Subject: [PATCH net] Re: [syzbot] [net?] WARNING in xfrm6_tunnel_net_exit (4)
Date: Mon, 20 Oct 2025 19:30:26 +0800 [thread overview]
Message-ID: <20251020113026.2461281-1-wangliang74@huawei.com> (raw)
#syz test
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index f3014e4f54fc..2e7ab56db152 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -441,6 +441,7 @@ int xfrm_input_register_afinfo(const struct xfrm_input_afinfo *afinfo);
int xfrm_input_unregister_afinfo(const struct xfrm_input_afinfo *afinfo);
void xfrm_flush_gc(void);
+void xfrm_state_delete_tunnel(struct xfrm_state *x);
struct xfrm_type {
struct module *owner;
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index d213ca3653a8..5d982e4e6526 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -806,7 +806,6 @@ void __xfrm_state_destroy(struct xfrm_state *x)
}
EXPORT_SYMBOL(__xfrm_state_destroy);
-static void xfrm_state_delete_tunnel(struct xfrm_state *x);
int __xfrm_state_delete(struct xfrm_state *x)
{
struct net *net = xs_net(x);
@@ -3085,7 +3084,7 @@ void xfrm_flush_gc(void)
}
EXPORT_SYMBOL(xfrm_flush_gc);
-static void xfrm_state_delete_tunnel(struct xfrm_state *x)
+void xfrm_state_delete_tunnel(struct xfrm_state *x)
{
if (x->tunnel) {
struct xfrm_state *t = x->tunnel;
@@ -3096,6 +3095,7 @@ static void xfrm_state_delete_tunnel(struct xfrm_state *x)
x->tunnel = NULL;
}
}
+EXPORT_SYMBOL(xfrm_state_delete_tunnel);
u32 xfrm_state_mtu(struct xfrm_state *x, int mtu)
{
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 010c9e6638c0..7f769617882c 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1031,6 +1031,7 @@ static int xfrm_add_sa(struct sk_buff *skb, struct nlmsghdr *nlh,
if (err < 0) {
x->km.state = XFRM_STATE_DEAD;
xfrm_dev_state_delete(x);
+ xfrm_state_delete_tunnel(x);
__xfrm_state_put(x);
goto out;
}
--
2.34.1
next reply other threads:[~2025-10-20 11:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-20 11:30 Wang Liang [this message]
2025-10-20 12:54 ` syzbot
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