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): P5585/1:b..l P6063/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=122237, q=1050 ncpus=2)
task:kworker/u10:17  state:R  running task     stack:21576 pid:6063  tgid:6063  ppid:2      task_flags:0x24208160 flags:0x00080000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
 <TASK>
 __schedule+0x17d4/0x5630
 preempt_schedule_common+0x7f/0xd0
 preempt_schedule_thunk+0x16/0x40
 _raw_spin_unlock_irqrestore+0x76/0x80
 ata_scsi_queuecmd+0x47a/0x590
 scsi_queue_rq+0x1854/0x3320
 blk_mq_dispatch_rq_list+0x499/0x1990
 __blk_mq_sched_dispatch_requests+0xd36/0x1580
 blk_mq_sched_dispatch_requests+0xd7/0x190
 blk_mq_run_hw_queue+0x406/0x4f0
 blk_mq_dispatch_list+0xd11/0xe10
 blk_mq_flush_plug_list+0x45f/0x540
 __blk_flush_plug+0x3ed/0x4d0
 blk_finish_plug+0x5d/0x80
 wb_writeback+0xa4c/0xad0
 wb_workfn+0xc92/0x10f0
 process_scheduled_works+0xa88/0x14c0
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
task:syz-executor    state:R  running task     stack:24424 pid:5585  tgid:5585  ppid:5525   task_flags:0x40050c flags:0x00080002
Call Trace:
 <TASK>
 __schedule+0x17d4/0x5630
 preempt_schedule_common+0x7f/0xd0
 preempt_schedule_thunk+0x16/0x40
 _raw_spin_unlock+0x41/0x50
 __zap_vma_range+0x4082/0x4f20
 unmap_vmas+0x390/0x550
 exit_mmap+0x293/0x9f0
 __mmput+0x118/0x420
 exit_mm+0x221/0x2d0
 do_exit+0x6cd/0x2360
 do_group_exit+0x22d/0x2f0
 get_signal+0x121b/0x12c0
 arch_do_signal_or_restart+0xbb/0x860
 exit_to_user_mode_loop+0x10e/0x770
 do_syscall_64+0x328/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66d1f59257
RSP: 002b:00007fff0153f0f0 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000555578d27500 RCX: 00007f66d1f59257
RDX: 0000000040000000 RSI: 00007fff0153f14c RDI: ffffffffffffffff
RBP: 00007fff0153f14c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 00007fff0153f3a8 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 7324 jiffies! g122237 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:27496 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17d4/0x5630
 schedule+0x164/0x2b0
 schedule_timeout+0x152/0x2c0
 rcu_gp_fqs_loop+0x30c/0x11f0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </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: 9037 Comm: kworker/R-bond4 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: bond49 bond_3ad_state_machine_handler
RIP: 0010:br_multicast_rcv+0x3c5c/0x77c0
Code: f8 00 00 00 41 88 c0 4c 89 ef 48 8b 74 24 28 48 8d 94 24 80 02 00 00 48 8b 4c 24 10 41 89 d9 6a 00 e8 58 f1 fe ff 48 83 c4 08 <48> 89 c3 48 b8 00 00 00 00 00 fc ff df 41 80 3c 06 00 4d 89 ee 74
RSP: 0018:ffffc90000006e20 EFLAGS: 00000292
RAX: ffff88802417d400 RBX: 0000000000000001 RCX: ffff888109ce3c00
RDX: 8000000000000100 RSI: 0000000000000100 RDI: 0000000100011bfe
RBP: ffffc90000007430 R08: 0000000000000100 R09: 1ffffffff20b0da6
R10: dffffc0000000000 R11: fffffbfff20b0da7 R12: ffff88803a6ff048
R13: ffff88816b8c5288 R14: 1ffff1102d718a51 R15: ffff8881e8b063d8
FS:  0000000000000000(0000) GS:ffff88818d92d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e5e677866 CR3: 0000000112aa6000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 br_handle_frame_finish+0x81f/0x1990
 br_nf_hook_thresh+0x3dd/0x4c0
 br_nf_pre_routing_finish_ipv6+0x90c/0xc40
 br_nf_pre_routing_ipv6+0x382/0x6f0
 br_handle_frame+0x127f/0x1510
 __netif_receive_skb_core+0x989/0x30c0
 process_backlog+0x727/0x18b0
 __napi_poll+0xaa/0x330
 net_rx_action+0x61d/0xf50
 handle_softirqs+0x226/0x860
 do_softirq+0x77/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x140
 bond_3ad_state_machine_handler+0x5a7c/0x5d60
 process_scheduled_works+0xa88/0x14c0
 rescuer_thread+0x7b6/0x10b0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
net_ratelimit: 73478 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:42:fc:d5:eb:ae:ce, 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:1c, 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:42:fc:d5:eb:ae:ce, 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 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:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:42:fc:d5:eb:ae:ce, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 77463 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:42:fc:d5:eb:ae:ce, 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:1c, 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:42:fc:d5:eb:ae:ce, 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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, 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:42:fc:d5:eb:ae:ce, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
