bridge0: received packet on bridge_slave_0 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): P5620/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=172081, q=2334 ncpus=2)
task:syz-executor    state:R  running task     stack:21952 pid:5620  tgid:5620  ppid:5609   task_flags:0x400140 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17d9/0x56c0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x8f0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:cgroup_tryget+0x34/0x2b0
Code: fe 49 bc 00 00 00 00 00 fc ff df e8 56 0a 0a 00 49 8d 5e 4c 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 4a 02 00 00 8b 1b <89> de 83 e6 01 31 ff e8 70 0e 0a 00 83 e3 01 75 54 4d 8d 7e 10 e8
RSP: 0018:ffffc90004e6fce0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000000000000a RCX: ffff888170f53b80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88811f72c000
RBP: 1ffff1102e459311 R08: ffffffff81bde746 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e959c20 R12: dffffc0000000000
R13: ffff8881722c9888 R14: ffff88811f72c000 R15: ffff888170f53bac
 cgroup_sk_alloc+0x255/0x3c0
 sk_alloc+0x25f/0x390
 inet_create+0x7a9/0xff0
 __sock_create+0x4b3/0x9d0
 __sys_socket+0xd6/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6607f9e6c7
RSP: 002b:00007ffcc257ef88 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f6607f9e6c7
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007ffcc257f68c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000001329
R13: 00000000000927c0 R14: 00000000000d3e24 R15: 00007ffcc257f6e0
 </TASK>
rcu: rcu_preempt kthread starved for 211 jiffies! g172081 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>
 __schedule+0x17d9/0x56c0
 schedule+0x164/0x2b0
 schedule_timeout+0x152/0x2c0
 rcu_gp_fqs_loop+0x30c/0x11f0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 23530 Comm: kworker/u8:11 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: krds_cp_wq#11/1 rds_connect_worker
RIP: 0010:arch_stack_walk+0x109/0x150
Code: 6d 97 09 00 83 bd 78 ff ff ff 00 74 38 4c 8d bd 78 ff ff ff 4c 89 ff e8 e5 6b 09 00 48 85 c0 74 24 48 89 df 48 89 c6 4d 89 f3 <2e> e8 f1 76 4a 0a 84 c0 74 11 4c 89 ff e8 15 6d 09 00 83 bd 78 ff
RSP: 0018:ffffc90000a07708 EFLAGS: 00000282
RAX: ffffffff8233f170 RBX: ffffc90000a077c0 RCX: 0000000080000100
RDX: 0000000000000001 RSI: ffffffff8233f170 RDI: ffffc90000a077c0
RBP: ffffc90000a07790 R08: ffffc90000a07a70 R09: 0000000000000000
R10: ffffc90000a07758 R11: ffffffff81b15910 R12: ffff88810c1e5940
R13: 0000000000000000 R14: ffffffff81b15910 R15: ffffc90000a07708
FS:  0000000000000000(0000) GS:ffff8882a921b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb5e4a8c866 CR3: 000000010b0c8000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x182/0x650
 br_nf_dev_queue_xmit+0x4f6/0x2540
 NF_HOOK+0x64e/0x6e0
 br_nf_post_routing+0xa53/0xee0
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x23e/0x3f0
 br_forward_finish+0xd3/0x130
 br_nf_forward_finish+0xa76/0xea0
 NF_HOOK+0x64e/0x6e0
 br_nf_forward_ip+0x7eb/0xa30
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x23e/0x3f0
 __br_forward+0x397/0x540
 br_flood+0x3e6/0x8d0
 br_handle_frame_finish+0x1175/0x1990
 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+0x989/0x30b0
 process_backlog+0x706/0x1860
 __napi_poll+0xaa/0x330
 net_rx_action+0x61d/0xf50
 handle_softirqs+0x225/0x840
 do_softirq+0x76/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0xf8/0x130
 __inet6_bind+0x301/0xf30
 kernel_bind+0x13e/0x1c0
 rds_tcp_conn_path_connect+0x53b/0x920
 rds_connect_worker+0x1d8/0x290
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
net_ratelimit: 31804 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
tipc: Duplicate 4 using eth(aa:aa:aa:aa:aa:32) seen on <eth:macvlan1>
