bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P19920/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=88981, q=925 ncpus=2)
task:dhcpcd-run-hook state:R  running task     stack:24592 pid:19920 tgid:19920 ppid:19919  task_flags:0x400040 flags:0x00080800
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
 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:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:109 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:127 [inline]
RIP: 0010:lock_release+0x93/0x3c0 kernel/locking/lockdep.c:5885
Code: 0f 85 0d 02 00 00 65 4c 8b 3d 81 98 c9 11 41 83 bf 9c 0b 00 00 00 0f 85 f7 01 00 00 49 81 3e 20 45 30 94 0f 84 ea 01 00 00 9c <5b> fa 48 c7 c7 f4 27 24 8e e8 cf 5b 2d 0a 65 ff 05 38 dd c9 11 c7
RSP: 0018:ffffc90002567430 EFLAGS: 00000206
RAX: 0000000000000000 RBX: ffffc90002567558 RCX: 0000000080000001
RDX: ffffc90002567501 RSI: ffffffff8c4bba60 RDI: ffffffff8c4bba20
RBP: 1ffffffff21f6901 R08: ffffc90002567860 R09: 0000000000000000
R10: ffffc90002567598 R11: fffff520004aceb5 R12: ffffc90002560000
R13: ffffffff8177827f R14: ffffffff8eb59c60 R15: ffff888064749f00
 rcu_lock_release include/linux/rcupdate.h:310 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1183 [inline]
 unwind_next_frame+0x1baa/0x2550 arch/x86/kernel/unwind_orc.c:709
 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:1406 [inline]
 __free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
 __slab_free+0x274/0x2c0 mm/slub.c:5741
 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:4584 [inline]
 slab_alloc_node mm/slub.c:4917 [inline]
 kmem_cache_alloc_noprof+0x2a0/0x5f0 mm/slub.c:4931
 alloc_empty_file+0x5b/0x1d0 fs/file_table.c:262
 path_openat+0x8f/0x3830 fs/namei.c:4849
 do_file_open+0x23e/0x4a0 fs/namei.c:4892
 do_sys_openat2+0x115/0x200 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_openat fs/open.c:1390 [inline]
 __se_sys_openat fs/open.c:1385 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1385
 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: 0033:0x7fd2b6173c3a
RSP: 002b:00007ffc03e64a08 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd2b6173c3a
RDX: 0000000000090800 RSI: 000055fd46637e10 RDI: 00000000ffffff9c
RBP: 000055fd46635481 R08: 00007fd2b624fac0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc03e64b68
R13: 000055fd46635478 R14: 0000000000000001 R15: 000055fd46637e37
 </TASK>
rcu: rcu_preempt kthread starved for 9972 jiffies! g88981 f0x0 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:27496 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7326
 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 11395 Comm: kworker/R-bond7 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue:  0x0 (bond7)
RIP: 0010:hlock_class kernel/locking/lockdep.c:234 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4879 [inline]
RIP: 0010:__lock_acquire+0x52e/0x2cf0 kernel/locking/lockdep.c:5187
Code: 00 48 83 c3 28 41 89 c4 49 39 cf 0f 8d a4 00 00 00 49 83 ff 31 0f 83 83 00 00 00 8b 03 25 ff 1f 00 00 48 0f a3 05 62 86 d1 12 <73> 10 48 69 c0 c8 00 00 00 48 8d 88 10 45 15 94 eb 32 83 3d 29 16
RSP: 0018:ffffc90000a07a98 EFLAGS: 00000003
RAX: 0000000000000007 RBX: ffff88806474e8e8 RCX: 0000000000000002
RDX: 0000000000000003 RSI: 0000000000000003 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8177827f R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb59c60 R12: 0000000000000003
R13: ffff88806474e8f0 R14: ffff88806474dd00 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff888125058000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f252d111000 CR3: 0000000072126000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
 rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 rcu_read_lock include/linux/rcupdate.h:840 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
 unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
 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
 unpoison_slab_object mm/kasan/common.c:340 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4584 [inline]
 slab_alloc_node mm/slub.c:4917 [inline]
 kmem_cache_alloc_noprof+0x2a0/0x5f0 mm/slub.c:4931
 skb_ext_maybe_cow net/core/skbuff.c:7118 [inline]
 skb_ext_add+0x1b6/0x8e0 net/core/skbuff.c:7193
 nf_bridge_unshare net/bridge/br_netfilter_hooks.c:170 [inline]
 br_nf_forward_ip+0xc3/0xa30 net/bridge/br_netfilter_hooks.c:686
 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+0x23e/0x3f0 include/linux/netfilter.h:316
 __br_forward+0x397/0x540 net/bridge/br_forward.c:115
 br_handle_frame_finish+0x1175/0x1990 net/bridge/br_input.c:229
 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:6103
 __netif_receive_skb_one_core net/core/dev.c:6214 [inline]
 __netif_receive_skb net/core/dev.c:6329 [inline]
 process_backlog+0x706/0x1860 net/core/dev.c:6680
 __napi_poll+0xaa/0x330 net/core/dev.c:7739
 napi_poll net/core/dev.c:7802 [inline]
 net_rx_action+0x61d/0xf50 net/core/dev.c:7959
 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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:188 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:206
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 4a 07 d0 f5 48 89 df e8 a2 7c d0 f5 e8 7d 5d fc f5 fb bf 01 00 00 00 <e8> 52 90 c1 f5 65 8b 05 4b a0 99 07 85 c0 74 07 5b c3 cc cc cc cc
RSP: 0018:ffffc9000343fce0 EFLAGS: 00000206
RAX: 00000000001a4b87 RBX: ffff88801b0c3000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8e227dfc RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff90573637 R09: 1ffffffff20ae6c6
R10: dffffc0000000000 R11: fffffbfff20ae6c7 R12: ffff888055f5e4b0
R13: ffff88801b0c3060 R14: ffff88802abdeb60 R15: ffff88802c42d230
 rescuer_thread+0xb78/0x10b0 kernel/workqueue.c:3655
 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: 13560 callbacks suppressed
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
net_ratelimit: 15590 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:82:56:03:77:c4:ba, vlan:0)