bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10378 ticks this GP) idle=9814/1/0x4000000000000000 softirq=22801/22920 fqs=47 rcu: hardirqs softirqs csw/system rcu: number: 30062 5 0 rcu: cputime: 477 256 0 ==> 740(ms) rcu: (t=10500 jiffies g=26397 q=497 ncpus=2) CPU: 0 PID: 7892 Comm: syz.0.555 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__find_rr_leaf+0x32d/0x6c0 net/ipv6/route.c:835 Code: 00 00 00 00 00 fc ff df 4c 8b 7c 24 30 49 83 c6 08 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 16 5d af f8 4d 8b 36 de 45 41 01 89 c3 31 ff 89 c6 e8 63 05 58 f8 85 db 74 1b e8 2a RSP: 0018:ffffc900000067e0 EFLAGS: 00000246 RAX: 1ffff1100ee17701 RBX: 0000000000000001 RCX: ffff888078d88000 RDX: 0000000000000100 RSI: 00000000fffffffd RDI: 00000000fffffffd RBP: ffffc90000006938 R08: ffffc90000006a60 R09: ffffc90000006a70 R10: ffffc900000068c0 R11: fffff52000000d1a R12: 1ffff1100ee1770a R13: dffffc0000000000 R14: ffff88807b543c00 R15: ffffc90000006a38 FS: 00007fa2ffbf66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2e1ca3 CR3: 000000006b7b0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: find_rr_leaf net/ipv6/route.c:891 [inline] rt6_select net/ipv6/route.c:935 [inline] fib6_table_lookup+0x3a0/0xa70 net/ipv6/route.c:2221 ip6_pol_route+0x22d/0x1160 net/ipv6/route.c:2257 pol_lookup_func include/net/ip6_fib.h:578 [inline] fib6_rule_lookup+0x1d7/0x510 net/ipv6/fib6_rules.c:116 ip6_route_input_lookup net/ipv6/route.c:2326 [inline] ip6_route_input+0x6cf/0xa50 net/ipv6/route.c:2622 ip6_rcv_finish+0x143/0x230 net/ipv6/ip6_input.c:77 ip_sabotage_in+0x1f4/0x280 net/bridge/br_netfilter_hooks.c:1001 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline] nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:259 [inline] NF_HOOK+0x204/0x390 include/linux/netfilter.h:302 __netif_receive_skb_one_core net/core/dev.c:5608 [inline] __netif_receive_skb+0xcc/0x290 net/core/dev.c:5722 netif_receive_skb_internal net/core/dev.c:5808 [inline] netif_receive_skb+0x1bc/0x6f0 net/core/dev.c:5867 NF_HOOK+0x9a/0x380 include/linux/netfilter.h:304 br_handle_frame_finish+0x146c/0x1920 net/bridge/br_input.c:221 br_nf_hook_thresh+0x3b6/0x480 net/bridge/br_netfilter_hooks.c:1184 br_nf_pre_routing_finish_ipv6+0x9e3/0xd90 net/bridge/br_netfilter_ipv6.c:-1 NF_HOOK include/linux/netfilter.h:304 [inline] br_nf_pre_routing_ipv6+0x34d/0x680 net/bridge/br_netfilter_ipv6.c:184 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline] nf_hook_bridge_pre net/bridge/br_input.c:277 [inline] br_handle_frame+0x96b/0x1480 net/bridge/br_input.c:424 __netif_receive_skb_core+0xf6b/0x3ac0 net/core/dev.c:5502 __netif_receive_skb_one_core net/core/dev.c:5606 [inline] __netif_receive_skb+0x74/0x290 net/core/dev.c:5722 process_backlog+0x380/0x6e0 net/core/dev.c:6050 __napi_poll+0xc0/0x460 net/core/dev.c:6612 napi_poll net/core/dev.c:6679 [inline] net_rx_action+0x5ea/0xbf0 net/core/dev.c:6815 handle_softirqs+0x280/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:7009 Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 63 bf 01 00 00 00 e8 9b 58 e4 f6 e8 06 de 14 f7 fb bf 01 00 00 00 db b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc9000453f0a0 EFLAGS: 00000286 RAX: f483b95288fe6900 RBX: 0000000000000000 RCX: f483b95288fe6900 RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001 RBP: ffffc9000453f150 R08: ffffffff90da852f R09: 1ffffffff21b50a5 R10: dffffc0000000000 R11: fffffbfff21b50a6 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008a7e14 irqentry_exit+0x67/0x70 kernel/entry/common.c:438 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:__slab_free+0x67/0x410 include/linux/kfence.h:-1 Code: 65 48 8b 04 25 28 00 00 00 48 3b 44 24 48 0f 85 55 03 00 00 48 89 df 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d e9 89 9b 00 00 <48> 89 fd 44 89 44 24 04 48 89 4c 24 20 0f 1f 44 00 00 31 ff 48 ba RSP: 0018:ffffc9000453f210 EFLAGS: 00000202 RAX: ffff88823bc00001 RBX: ffff88807c8f6d80 RCX: ffff88807c8f6d80 RDX: fffffffe40cf6d01 RSI: ffffea0001f23d80 RDI: ffff888019a4cc80 RBP: ffff8880232be100 R08: 0000000000000001 R09: ffffffff81dcf9ea R10: 0000000000042a30 R11: fffffbfff21b50a6 R12: ffff888019a4cc80 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807c8f6d80 qlink_free mm/kasan/quarantine.c:166 [inline] qlist_free_all+0x75/0xe0 mm/kasan/quarantine.c:185 kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x6e/0x4d0 mm/slab.h:767 slab_alloc_node mm/slub.c:3495 [inline] __kmem_cache_alloc_node+0x13e/0x260 mm/slub.c:3534 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0xa4/0x240 mm/slab_common.c:1020 kmalloc_array include/linux/slab.h:637 [inline] genl_family_rcv_msg_attrs_parse+0xa3/0x290 net/netlink/genetlink.c:796 genl_family_rcv_msg_doit+0xb9/0x2f0 net/netlink/genetlink.c:949 genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline] genl_rcv_msg+0x60b/0x790 net/netlink/genetlink.c:1066 netlink_rcv_skb+0x216/0x480 net/netlink/af_netlink.c:2545 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1075 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8c1/0xbe0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x5bf/0x950 net/socket.c:2595 ___sys_sendmsg+0x220/0x290 net/socket.c:2649 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2687 [inline] __se_sys_sendmsg+0x1a5/0x270 net/socket.c:2685 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa30198f749 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa2ffbf6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa301be5fa0 RCX: 00007fa30198f749 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000003 RBP: 00007fa301a13f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa301be6038 R14: 00007fa301be5fa0 R15: 00007ffc6c26c208 net_ratelimit: 10591 callbacks suppressed bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)