bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=191501, q=395 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 9673 (4295126533-4295116860), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 9673 jiffies! g191501 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:26952 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1553/0x45a0 kernel/sched/core.c:6700
 schedule+0xbd/0x170 kernel/sched/core.c:6774
 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x313/0x1590 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 29668 Comm: syz.3.7541 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:check_preemption_disabled+0x18/0x110 lib/smp_processor_id.c:14
Code: c0 8f 1c 8b eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 41 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 <65> 8b 05 bd 25 7d 75 65 8b 0d b2 25 7d 75 f7 c1 ff ff ff 7f 74 1f
RSP: 0018:ffffc900001efdf8 EFLAGS: 00000282
RAX: c16a994e204f9e00 RBX: 0000000000000000 RCX: 0000000080000101
RDX: ffff88802ca2bc00 RSI: ffffffff8b1c8fc0 RDI: ffffffff8b1c8f80
RBP: ffffc900001eff40 R08: ffffffff8e8b19ef R09: 1ffffffff1d1633d
R10: dffffc0000000000 R11: fffffbfff1d1633e R12: ffff88801e353000
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fb1bcacc6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3041eff8 CR3: 0000000065ab2000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_lockdep_current_cpu_online+0x37/0x120 kernel/rcu/tree.c:4225
 rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
 rcu_read_lock_held+0x1e/0x40 kernel/rcu/update.c:348
 __in6_dev_get_safely include/net/addrconf.h:351 [inline]
 ip6_mc_input+0x177/0xcb0 net/ipv6/ip6_input.c:505
 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+0x21d/0x3b0 include/linux/netfilter.h:302
 __netif_receive_skb_one_core net/core/dev.c:5646 [inline]
 __netif_receive_skb+0xcc/0x290 net/core/dev.c:5760
 netif_receive_skb_internal net/core/dev.c:5846 [inline]
 netif_receive_skb+0x1bc/0x720 net/core/dev.c:5905
 NF_HOOK+0x9e/0x3a0 include/linux/netfilter.h:304
 br_handle_frame_finish+0x13e5/0x18f0 net/bridge/br_input.c:221
 br_nf_hook_thresh+0x3cd/0x4a0 net/bridge/br_netfilter_hooks.c:1184
 br_nf_pre_routing_finish_ipv6+0x9dc/0xd00 net/bridge/br_netfilter_ipv6.c:-1
 NF_HOOK include/linux/netfilter.h:304 [inline]
 br_nf_pre_routing_ipv6+0x349/0x6b0 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+0x1245/0x14d0 net/bridge/br_input.c:424
 __netif_receive_skb_core+0xfab/0x3af0 net/core/dev.c:5540
 __netif_receive_skb_one_core net/core/dev.c:5644 [inline]
 __netif_receive_skb+0x74/0x290 net/core/dev.c:5760
 process_backlog+0x391/0x6f0 net/core/dev.c:6088
 __napi_poll+0xc0/0x460 net/core/dev.c:6650
 napi_poll net/core/dev.c:6717 [inline]
 net_rx_action+0x616/0xc40 net/core/dev.c:6853
 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+0xd3/0x190 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:raw_spin_rq_unlock_irq+0x13/0x90 kernel/sched/sched.h:1392
Code: 5d 41 5e 41 5f 5d c3 e8 bb 9a 27 09 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 53 66 90 e8 34 44 31 09 e8 cf b4 2e 00 fb 5b <41> 5e 41 5f c3 49 be 00 00 00 00 00 fc ff df 49 89 ff 48 8d 9f 58
RSP: 0018:ffffc9000ba7f8e8 EFLAGS: 00000282
RAX: c16a994e204f9e00 RBX: ffff8880b8f3cd48 RCX: c16a994e204f9e00
RDX: dffffc0000000000 RSI: ffffffff8acac9e0 RDI: ffffffff8b1c8fe0
RBP: ffffc9000ba7fb10 R08: ffffffff8e8b19ef R09: 1ffffffff1d1633d
R10: dffffc0000000000 R11: fffffbfff1d1633e R12: dffffc0000000000
R13: ffff88802ca2bc00 R14: ffff8880b8f3c000 R15: ffff88802ca2bc00
 __schedule+0x179f/0x45a0 kernel/sched/core.c:6704
 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
 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:__sanitizer_cov_trace_pc+0x45/0x60 kernel/kcov.c:221
Code: ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 <48> 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2
RSP: 0018:ffffc9000ba7fc80 EFLAGS: 00000246
RAX: ffffffff8154f182 RBX: 0000000000000000 RCX: ffff88802ca2bc00
RDX: ffffc9000bf79000 RSI: 0000000000000bd6 RDI: 0000000000000000
RBP: ffff88805cda8000 R08: ffffffff8e8b19ef R09: 1ffffffff1d1633d
R10: dffffc0000000000 R11: fffffbfff1d1633e R12: ffffc9000ba7fe00
R13: 0000000000000009 R14: dffffc0000000000 R15: ffff88802ca2c520
 get_signal+0x10a2/0x13f0 kernel/signal.c:2868
 arch_do_signal_or_restart+0xc2/0x800 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb1bbb9cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1bcacc0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000000 RBX: 00007fb1bbe15fa8 RCX: 00007fb1bbb9cdd9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fb1bbe15fac
RBP: 00007fb1bbe15fa0 R08: 0000000000745d1e R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb1bbe16038 R14: 00007ffdc084f0f0 R15: 00007ffdc084f1d8
 </TASK>
net_ratelimit: 7857 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:9a:21:28:1f:bc, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:9a:21:28:1f:bc, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
net_ratelimit: 7704 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:9a:21:28:1f:bc, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:9a:21:28:1f:bc, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)