bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5827/1:b..l P5493/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=78209, q=458 ncpus=1)
task:dhcpcd          state:R  running task     stack:25992 pid:5493  tgid:5493  ppid:1      task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1139/0x6150 kernel/sched/core.c:6863
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7190
 irqentry_exit+0x1d8/0x8c0 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_release+0x183/0x2d0 kernel/locking/lockdep.c:5893
Code: 0f c1 05 c8 07 19 12 83 f8 01 0f 85 03 01 00 00 9c 58 f6 c4 02 0f 85 ee 00 00 00 41 f7 c5 00 02 00 00 74 01 fb 48 8b 44 24 10 <65> 48 2b 05 5d c0 18 12 0f 85 32 01 00 00 48 83 c4 18 5b 41 5c 41
RSP: 0018:ffffc90002ed74f8 EFLAGS: 00000206
RAX: 013f7dce0e333300 RBX: ffffffff8e3c9520 RCX: ffffc90002ed7504
RDX: 0000000000000001 RSI: ffffffff8daa4496 RDI: ffffffff8bf2b580
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: ffff888030a28b30 R12: ffffffff8231d2a6
R13: 0000000000000206 R14: ffff888030a28000 R15: 0000000000000002
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:897 [inline]
 __update_page_owner_free_handle.constprop.0+0x31b/0x4a0 mm/page_owner.c:295
 __reset_page_owner+0x93/0x1a0 mm/page_owner.c:321
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1395 [inline]
 __free_frozen_pages+0x7df/0x1170 mm/page_alloc.c:2943
 discard_slab mm/slub.c:3346 [inline]
 __put_partials+0x130/0x170 mm/slub.c:3886
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4c/0xf0 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_kmalloc+0x8a/0xb0 mm/kasan/common.c:405
 kasan_kmalloc include/linux/kasan.h:262 [inline]
 __do_kmalloc_node mm/slub.c:5657 [inline]
 __kmalloc_node_track_caller_noprof+0x353/0x930 mm/slub.c:5764
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:608
 __alloc_skb+0x186/0x410 net/core/skbuff.c:690
 alloc_skb include/linux/skbuff.h:1383 [inline]
 alloc_skb_with_frags+0xe0/0x860 net/core/skbuff.c:6712
 sock_alloc_send_pskb+0x7f9/0x980 net/core/sock.c:2995
 unix_dgram_sendmsg+0x3bc/0x1830 net/unix/af_unix.c:2130
 unix_seqpacket_sendmsg+0x12a/0x1c0 net/unix/af_unix.c:2531
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 sock_write_iter+0x566/0x610 net/socket.c:1195
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x7d3/0x11d0 fs/read_write.c:686
 ksys_write+0x1f8/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f32c7751407
RSP: 002b:00007ffebcdb79b0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f32c76c7740 RCX: 00007f32c7751407
RDX: 0000000000000047 RSI: 00007ffebcdb7a10 RDI: 0000000000000005
RBP: 0000557ab8f05a48 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffebcdb7e40
R13: 000000000000f943 R14: 0000000000000001 R15: 0000000000000001
 </TASK>
task:syz-executor    state:R  running task     stack:22360 pid:5827  tgid:5827  ppid:1      task_flags:0x40054c flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1139/0x6150 kernel/sched/core.c:6863
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7190
 irqentry_exit+0x1d8/0x8c0 kernel/entry/common.c:216
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__rcu_read_lock+0xbe/0xf0 kernel/rcu/tree_plugin.h:416
Code: 12 48 8d bb 84 04 00 00 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1f 8b 83 84 04 00 00 <3d> ff ff ff 3f 7f 07 5b 5d c3 cc cc cc cc 90 0f 0b 90 5b 5d c3 cc
RSP: 0018:ffffc900040ff8f0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff88802ff9db80 RCX: 000000b421cbf982
RDX: 0000000000000000 RSI: ffffffff8233693e RDI: ffff88802ff9e004
RBP: ffff88802ff9db80 R08: 0000000000000000 R09: fffff94000347356
R10: ffffea0001a39ab7 R11: ffff88802ff9e6b0 R12: ffffea0001a39a80
R13: 000000b2f52ed84b R14: 0000000000000000 R15: 0000000000000000
 rcu_read_lock include/linux/rcupdate.h:865 [inline]
 page_ext_get+0x13/0x1a0 mm/page_ext.c:527
 __reset_page_owner+0x2b/0x1a0 mm/page_owner.c:306
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1395 [inline]
 __free_frozen_pages+0x7df/0x1170 mm/page_alloc.c:2943
 vfree+0x1fd/0xb50 mm/vmalloc.c:3466
 kcov_put kernel/kcov.c:439 [inline]
 kcov_put kernel/kcov.c:435 [inline]
 kcov_close+0x34/0x60 kernel/kcov.c:535
 __fput+0x402/0xb70 fs/file_table.c:468
 task_work_run+0x150/0x240 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x87f/0x2bd0 kernel/exit.c:971
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1112
 get_signal+0x2671/0x26d0 kernel/signal.c:3034
 arch_do_signal_or_restart+0x8f/0x7a0 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:41 [inline]
 exit_to_user_mode_loop+0x8c/0x540 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x4ee/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1a39d8e1dc
RSP: 002b:00007ffe744269e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: fffffffffffffe00 RBX: 00000000ffffffff RCX: 00007f1a39d8e1dc
RDX: 0000000000000030 RSI: 00007ffe74426aa0 RDI: 00000000000000f9
RBP: 00007ffe74426a4c R08: 0000000000000000 R09: 0079746972756365
R10: 00007f1a39fb7800 R11: 0000000000000246 R12: 0000000000000258
R13: 00000000000927c0 R14: 00000000000a85d1 R15: 00007ffe74426aa0
 </TASK>
rcu: rcu_preempt kthread starved for 753 jiffies! g78209 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:28216 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1139/0x6150 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6960
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 10881 Comm: kworker/u10:2 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker
RIP: 0010:lock_acquire+0x62/0x330 kernel/locking/lockdep.c:5872
Code: bb 18 12 83 f8 07 0f 87 a2 02 00 00 89 c0 48 0f a3 05 f2 62 ef 0e 0f 82 74 02 00 00 8b 35 6a 93 ef 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 09 bb 18 12 0f 85 ad 02 00 00 48 83 c4
RSP: 0018:ffffc900000063e8 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3c9520 RCX: 00000000be43aea6
RDX: 0000000000000000 RSI: ffffffff8daa4496 RDI: ffffffff8bf2b580
RBP: 0000000000000002 R08: 000000007bbcb764 R09: 0000000047bbcb76
R10: 0000000000000002 R11: ffff888025c3e6b0 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881248fc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6cd6000218 CR3: 000000007dc4a000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1195 [inline]
 unwind_next_frame+0xd1/0x20b0 arch/x86/kernel/unwind_orc.c:495
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:56
 kasan_save_track+0x14/0x30 mm/kasan/common.c:77
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:252 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:284
 kasan_slab_free include/linux/kasan.h:234 [inline]
 slab_free_hook mm/slub.c:2540 [inline]
 slab_free mm/slub.c:6670 [inline]
 kmem_cache_free+0x2d8/0x770 mm/slub.c:6781
 __skb_ext_put+0x102/0x2c0 net/core/skbuff.c:7201
 skb_ext_reset include/linux/skbuff.h:5074 [inline]
 skb_ext_reset include/linux/skbuff.h:5071 [inline]
 skb_scrub_packet+0x372/0x430 net/core/skbuff.c:6221
 ____dev_forward_skb include/linux/netdevice.h:4355 [inline]
 __dev_forward_skb2+0x379/0x750 net/core/dev.c:2421
 veth_forward_skb drivers/net/veth.c:319 [inline]
 veth_xmit+0x2bd/0xe60 drivers/net/veth.c:375
 __netdev_start_xmit include/linux/netdevice.h:5273 [inline]
 netdev_start_xmit include/linux/netdevice.h:5282 [inline]
 xmit_one net/core/dev.c:3853 [inline]
 dev_hard_start_xmit+0x97/0x6e0 net/core/dev.c:3869
 __dev_queue_xmit+0x6d7/0x4650 net/core/dev.c:4817
 dev_queue_xmit include/linux/netdevice.h:3381 [inline]
 br_dev_queue_push_xmit+0x272/0x8a0 net/bridge/br_forward.c:53
 br_nf_dev_queue_xmit+0x6e0/0x2b00 net/bridge/br_netfilter_hooks.c:920
 NF_HOOK include/linux/netfilter.h:318 [inline]
 NF_HOOK include/linux/netfilter.h:312 [inline]
 br_nf_post_routing+0x8e7/0x1190 net/bridge/br_netfilter_hooks.c:966
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xbe/0x200 net/netfilter/core.c:623
 nf_hook+0x45e/0x780 include/linux/netfilter.h:273
 NF_HOOK include/linux/netfilter.h:316 [inline]
 br_forward_finish+0xcd/0x130 net/bridge/br_forward.c:66
 br_nf_hook_thresh+0x307/0x410 net/bridge/br_netfilter_hooks.c:1167
 br_nf_forward_finish+0x66a/0xba0 net/bridge/br_netfilter_hooks.c:662
 NF_HOOK include/linux/netfilter.h:318 [inline]
 NF_HOOK include/linux/netfilter.h:312 [inline]
 br_nf_forward_ip.part.0+0x609/0x810 net/bridge/br_netfilter_hooks.c:716
 br_nf_forward_ip net/bridge/br_netfilter_hooks.c:676 [inline]
 br_nf_forward+0xf0f/0x1be0 net/bridge/br_netfilter_hooks.c:773
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_slow+0xbe/0x200 net/netfilter/core.c:623
 nf_hook+0x45e/0x780 include/linux/netfilter.h:273
 NF_HOOK include/linux/netfilter.h:316 [inline]
 __br_forward+0x1be/0x5b0 net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 br_flood+0x39c/0x650 net/bridge/br_forward.c:250
 br_handle_frame_finish+0x1117/0x1f00 net/bridge/br_input.c:229
 br_nf_hook_thresh+0x307/0x410 net/bridge/br_netfilter_hooks.c:1167
 br_nf_pre_routing_finish_ipv6+0x76a/0xfc0 net/bridge/br_netfilter_ipv6.c:154
 NF_HOOK include/linux/netfilter.h:318 [inline]
 br_nf_pre_routing_ipv6+0x3cd/0x8c0 net/bridge/br_netfilter_ipv6.c:184
 br_nf_pre_routing+0x860/0x15b0 net/bridge/br_netfilter_hooks.c:508
 nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
 br_handle_frame+0xb28/0x14e0 net/bridge/br_input.c:442
 __netif_receive_skb_core.constprop.0+0x6b3/0x35b0 net/core/dev.c:6024
 __netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6135
 __netif_receive_skb+0x1d/0x160 net/core/dev.c:6250
 process_backlog+0x4a2/0x1650 net/core/dev.c:6602
 __napi_poll.constprop.0+0xb3/0x540 net/core/dev.c:7666
 napi_poll net/core/dev.c:7729 [inline]
 net_rx_action+0x9f9/0xfa0 net/core/dev.c:7881
 handle_softirqs+0x219/0x950 kernel/softirq.c:622
 do_softirq kernel/softirq.c:523 [inline]
 do_softirq+0xb2/0xf0 kernel/softirq.c:510
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:450
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline]
 kernel_fpu_end arch/x86/kernel/fpu/core.c:480 [inline]
 kernel_fpu_end+0x5e/0x70 arch/x86/kernel/fpu/core.c:473
 blake2s_compress+0x77/0xe0 lib/crypto/x86/blake2s.h:42
 blake2s_final+0xc9/0x160 lib/crypto/blake2s.c:142
 hmac.constprop.0+0x335/0x420 drivers/net/wireguard/noise.c:333
 kdf.constprop.0+0x122/0x280 drivers/net/wireguard/noise.c:360
 message_ephemeral+0x5f/0x70 drivers/net/wireguard/noise.c:493
 wg_noise_handshake_create_initiation+0x322/0x610 drivers/net/wireguard/noise.c:545
 wg_packet_send_handshake_initiation+0x19a/0x360 drivers/net/wireguard/send.c:34
 wg_packet_handshake_send_worker+0x1c/0x30 drivers/net/wireguard/send.c:51
 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
net_ratelimit: 21428 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
net_ratelimit: 32884 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:5e:b0:7a:d8:2d:3c, vlan:0)