------------[ cut here ]------------ WARNING: CPU: 1 PID: 24 at net/netfilter/xt_cluster.c:72 xt_cluster_is_multicast_addr net/netfilter/xt_cluster.c:72 [inline] WARNING: CPU: 1 PID: 24 at net/netfilter/xt_cluster.c:72 xt_cluster_mt+0x196/0x780 net/netfilter/xt_cluster.c:104 Modules linked in: CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.11.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:xt_cluster_is_multicast_addr net/netfilter/xt_cluster.c:72 [inline] RIP: 0010:xt_cluster_mt+0x196/0x780 net/netfilter/xt_cluster.c:104 Code: f0 00 00 00 23 2b bf e0 00 00 00 89 ee e8 32 ee a1 f7 81 fd e0 00 00 00 75 1c e8 e5 e9 a1 f7 e9 83 00 00 00 e8 db e9 a1 f7 90 <0f> 0b 90 eb 0c e8 d0 e9 a1 f7 eb 05 e8 c9 e9 a1 f7 4d 8d af 80 00 RSP: 0018:ffffc900001e6a28 EFLAGS: 00010246 RAX: ffffffff89f1a2d5 RBX: 0000000000000007 RCX: ffff88801d688000 RDX: 0000000000000100 RSI: ffffffff8fd2a440 RDI: 0000000000000007 RBP: ffffc900001e6c08 R08: 0000000000000001 R09: ffffffff89f1a1c4 R10: 0000000000000002 R11: ffff88801d688000 R12: dffffc0000000000 R13: 1ffff92000169c18 R14: ffffc90000b4e140 R15: ffff88807c818280 FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc293e8a48 CR3: 000000007cb6e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ebt_do_match net/bridge/netfilter/ebtables.c:109 [inline] ebt_do_table+0x174b/0x2a40 net/bridge/netfilter/ebtables.c:230 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK+0x2a7/0x460 include/linux/netfilter.h:312 __br_forward+0x489/0x660 net/bridge/br_forward.c:115 br_handle_frame_finish+0x18ba/0x1fe0 net/bridge/br_input.c:215 br_nf_hook_thresh+0x472/0x590 br_nf_pre_routing_finish_ipv6+0xaa0/0xdd0 NF_HOOK include/linux/netfilter.h:314 [inline] br_nf_pre_routing_ipv6+0x379/0x770 net/bridge/br_netfilter_ipv6.c:184 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_bridge_pre net/bridge/br_input.c:277 [inline] br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424 __netif_receive_skb_core+0x13e8/0x4570 net/core/dev.c:5555 __netif_receive_skb_one_core net/core/dev.c:5659 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5775 process_backlog+0x662/0x15b0 net/core/dev.c:6108 __napi_poll+0xcb/0x490 net/core/dev.c:6772 napi_poll net/core/dev.c:6841 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6963 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:928 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244