bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7775/1:b..l P7773/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=18093, q=2176 ncpus=2)
task:syz.1.665       state:R  running task     stack:27192 pid:7773  tgid:7771  ppid:5617   task_flags:0x40044c flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7409
 preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:169 [inline]
 _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:190
 spin_unlock include/linux/spinlock.h:390 [inline]
 zap_pte_range mm/memory.c:1964 [inline]
 zap_pmd_range mm/memory.c:2020 [inline]
 zap_pud_range mm/memory.c:2048 [inline]
 zap_p4d_range mm/memory.c:2069 [inline]
 __zap_vma_range+0x3e40/0x4c70 mm/memory.c:2109
 unmap_vmas+0x390/0x550 mm/memory.c:2178
 exit_mmap+0x293/0x9f0 mm/mmap.c:1300
 __mmput+0x118/0x420 kernel/fork.c:1181
 exit_mm+0x221/0x2d0 kernel/exit.c:610
 do_exit+0x6cd/0x2360 kernel/exit.c:992
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1147
 get_signal+0x121b/0x12c0 kernel/signal.c:3038
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x104/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9dff39caeb
RSP: 002b:00007f9e00212050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f9dff616038 RCX: 00007f9dff39caeb
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d8
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f9e002126c0
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f9dff616038 R14: 00007ffc3376c300 R15: 00007ffc3376c3e8
 </TASK>
task:syz.0.666       state:R  running task     stack:29040 pid:7775  tgid:7774  ppid:5623   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
 irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:841 [inline]
RIP: 0010:class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
RIP: 0010:unwind_next_frame+0xb0/0x2550 arch/x86/kernel/unwind_orc.c:495
Code: 34 00 4c 8d 2d 00 00 00 00 48 c7 c7 20 9a 95 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 41 55 e8 f4 1d 2b 00 48 83 c4 08 <e8> 3b 48 31 0a 85 c0 74 3a e8 92 47 34 00 84 c0 75 31 e8 29 48 31
RSP: 0018:ffffc900070af6c0 EFLAGS: 00000296
RAX: 9afa30bffd6b4400 RBX: ffffffff8ba76224 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8c291100 RDI: ffffffff8c2910c0
RBP: 1ffff92000e15ef4 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc900070af7b8 R11: ffffffff81b10630 R12: dffffc0000000000
R13: ffffffff8176a21f R14: ffffc900070af768 R15: 1ffff92000e15eed
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 save_stack+0x122/0x230 mm/page_owner.c:165
 __reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1397 [inline]
 __free_frozen_pages+0xc0d/0xd20 mm/page_alloc.c:2938
 __slab_free+0x274/0x2c0 mm/slub.c:5672
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4610 [inline]
 slab_alloc_node mm/slub.c:4939 [inline]
 __kmalloc_cache_noprof+0x2b6/0x660 mm/slub.c:5446
 _kmalloc_noprof include/linux/slab.h:969 [inline]
 _kzalloc_noprof include/linux/slab.h:1286 [inline]
 sctp_auth_shkey_create+0x7a/0x1b0 net/sctp/auth.c:85
 sctp_endpoint_init net/sctp/endpointola.c:103 [inline]
 sctp_endpoint_new+0x457/0xa70 net/sctp/endpointola.c:142
 sctp_init_sock+0x947/0x1380 net/sctp/socket.c:5143
 inet_create+0xd1c/0xff0 net/ipv4/af_inet.c:391
 __sock_create+0x4b3/0x9d0 net/socket.c:1651
 sock_create net/socket.c:1709 [inline]
 __sys_socket_create net/socket.c:1746 [inline]
 __sys_socket+0xd6/0x1b0 net/socket.c:1793
 __do_sys_socket net/socket.c:1807 [inline]
 __se_sys_socket net/socket.c:1805 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1805
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbdaff9ce59
RSP: 002b:00007fbdb0f3a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007fbdb0215fa0 RCX: 00007fbdaff9ce59
RDX: 0000000000000084 RSI: 0000000000000005 RDI: 0000000000000002
RBP: 00007fbdb0032e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbdb0216038 R14: 00007fbdb0215fa0 R15: 00007ffeb5ea41b8
 </TASK>
rcu: rcu_preempt kthread starved for 673 jiffies! g18093 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:28056 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5504 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
 __schedule_loop kernel/sched/core.c:7307 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7322
 schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5710 Comm: kworker/0:4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker
RIP: 0010:unwind_next_frame+0x831/0x2550 arch/x86/kernel/unwind_orc.c:530
Code: 20 00 74 08 48 89 df e8 1d a1 ba 00 48 8b 3b 48 85 ff 0f 84 3e 0e 00 00 48 83 c7 60 e9 a0 02 00 00 83 fb 03 0f 84 6a 01 00 00 <83> fb 04 0f 85 bf 0c 00 00 49 8d 5e 40 48 89 d8 48 c1 e8 03 42 80
RSP: 0018:ffffc90000006a60 EFLAGS: 00000202
RAX: ffffc90000006b3d RBX: 0000000000000004 RCX: ffffffff90a3a2c8
RDX: ffffffff914c1ea8 RSI: ffffffff914c1ea4 RDI: ffffffff8c2910c0
RBP: ffffc90000006b40 R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90000006b58 R11: ffffffff81b10630 R12: dffffc0000000000
R13: ffffffff914c1ea4 R14: ffffc90000006b08 R15: 1ffff92000000d61
FS:  0000000000000000(0000) GS:ffff88812527b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3aa9c0fa5a CR3: 000000000e746000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2700 [inline]
 slab_free mm/slub.c:6310 [inline]
 kmem_cache_free+0x182/0x650 mm/slub.c:6437
 skb_ext_reset include/linux/skbuff.h:5119 [inline]
 skb_release_head_state+0x270/0x360 net/core/skbuff.c:1183
 skb_release_all net/core/skbuff.c:1189 [inline]
 __kfree_skb+0x24/0x210 net/core/skbuff.c:1205
 kfree_skb_reason include/linux/skbuff.h:1325 [inline]
 kfree_skb include/linux/skbuff.h:1334 [inline]
 ip6_mc_input+0x909/0xbc0 net/ipv6/ip6_input.c:638
 ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:988
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
 nf_hook include/linux/netfilter.h:273 [inline]
 NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:316
 __netif_receive_skb_one_core net/core/dev.c:6206 [inline]
 __netif_receive_skb net/core/dev.c:6319 [inline]
 netif_receive_skb_internal net/core/dev.c:6405 [inline]
 netif_receive_skb+0x278/0xbf0 net/core/dev.c:6464
 NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:318
 br_handle_frame_finish+0x1192/0x1990 net/bridge/br_input.c:-1
 br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
 br_nf_pre_routing_finish_ipv6+0x90c/0xc40 net/bridge/br_netfilter_ipv6.c:-1
 NF_HOOK include/linux/netfilter.h:318 [inline]
 br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
 br_handle_frame+0x127f/0x1510 net/bridge/br_input.c:442
 __netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6093
 __netif_receive_skb_one_core net/core/dev.c:6204 [inline]
 __netif_receive_skb net/core/dev.c:6319 [inline]
 process_backlog+0x706/0x1860 net/core/dev.c:6670
 __napi_poll+0xaa/0x330 net/core/dev.c:7729
 napi_poll net/core/dev.c:7792 [inline]
 net_rx_action+0x61d/0xf50 net/core/dev.c:7949
 handle_softirqs+0x225/0x840 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:arch_try_cmpxchg128 arch/x86/include/asm/cmpxchg_64.h:83 [inline]
RIP: 0010:__update_freelist_fast mm/slub.c:652 [inline]
RIP: 0010:slab_update_freelist mm/slub.c:718 [inline]
RIP: 0010:__slab_free+0xbd/0x2c0 mm/slub.c:5623
Code: 44 24 04 74 45 85 c0 74 41 45 31 e4 41 f6 46 0a 20 74 66 48 8b 44 24 40 48 8b 54 24 48 48 89 de 48 8b 5c 24 30 48 8b 4c 24 38 <f0> 48 0f c7 4e 20 48 89 f3 0f 84 e8 00 00 00 48 89 44 24 40 48 89
RSP: 0018:ffffc9000456f550 EFLAGS: 00000202
RAX: ffff888045eb3280 RBX: ffff888045eb3140 RCX: 00000008000c0001
RDX: 00000008000c0002 RSI: ffffea000117acc0 RDI: ffff8881404198c0
RBP: ffffc9000456f5d8 R08: 0000000000000000 R09: ffffffff82315cae
R10: dffffc0000000000 R11: fffffbfff206229f R12: 0000000000000000
R13: ffff888045eb3280 R14: ffff8881404198c0 R15: 0000000000000000
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __kmalloc_cache_noprof+0x318/0x660 mm/slub.c:5451
 _kmalloc_noprof include/linux/slab.h:969 [inline]
 _kzalloc_noprof include/linux/slab.h:1286 [inline]
 keypair_create drivers/net/wireguard/noise.c:100 [inline]
 wg_noise_handshake_begin_session+0xd4/0xbf0 drivers/net/wireguard/noise.c:827
 wg_packet_send_handshake_response+0x137/0x2d0 drivers/net/wireguard/send.c:96
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline]
 wg_packet_handshake_receive_worker+0x6a9/0x10c0 drivers/net/wireguard/receive.c:213
 process_one_work kernel/workqueue.c:3314 [inline]
 process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3478
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
net_ratelimit: 26732 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:6a:33:2c:7d:77:8e, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:6a:33:2c:7d:77:8e, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:6a:33:2c:7d:77:8e, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)