diff options
| author | Eric Woudstra <ericwouds@gmail.com> | 2025-10-07 10:15:01 +0200 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2025-10-08 13:17:31 +0200 |
| commit | bbf0c98b3ad9edaea1f982de6c199cc11d3b7705 (patch) | |
| tree | e5f10fd6d1a3b98cc01a24ceb097bb1fee11344a | |
| parent | f359b809d54c6e3dd1d039b97e0b68390b0e53e4 (diff) | |
bridge: br_vlan_fill_forward_path_pvid: use br_vlan_group_rcu()
net/bridge/br_private.h:1627 suspicious rcu_dereference_protected() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
7 locks held by socat/410:
#0: ffff88800d7a9c90 (sk_lock-AF_INET){+.+.}-{0:0}, at: inet_stream_connect+0x43/0xa0
#1: ffffffff9a779900 (rcu_read_lock){....}-{1:3}, at: __ip_queue_xmit+0x62/0x1830
[..]
#6: ffffffff9a779900 (rcu_read_lock){....}-{1:3}, at: nf_hook.constprop.0+0x8a/0x440
Call Trace:
lockdep_rcu_suspicious.cold+0x4f/0xb1
br_vlan_fill_forward_path_pvid+0x32c/0x410 [bridge]
br_fill_forward_path+0x7a/0x4d0 [bridge]
Use to correct helper, non _rcu variant requires RTNL mutex.
Fixes: bcf2766b1377 ("net: bridge: resolve forwarding path for VLAN tag actions in bridge devices")
Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
| -rw-r--r-- | net/bridge/br_vlan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c index ae911220cb3c..ce72b837ff8e 100644 --- a/net/bridge/br_vlan.c +++ b/net/bridge/br_vlan.c @@ -1457,7 +1457,7 @@ void br_vlan_fill_forward_path_pvid(struct net_bridge *br, if (!br_opt_get(br, BROPT_VLAN_ENABLED)) return; - vg = br_vlan_group(br); + vg = br_vlan_group_rcu(br); if (idx >= 0 && ctx->vlan[idx].proto == br->vlan_proto) { |