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): P5889/2:b..l P9/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=8365, q=2139 ncpus=2)
task:kworker/0:0     state:R  running task     stack:25632 pid:9     tgid:9     ppid:2      task_flags:0x4288060 flags:0x00080000
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 d5 d2 ed 09 f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 51 50 57 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 2e c0 53
RSP: 0018:ffffc900000e7118 EFLAGS: 00000286
RAX: 2c61c8938fc8a700 RBX: 0000000000000246 RCX: 0000000000000046
RDX: 0000000056fedc62 RSI: ffffffff8df5fbe0 RDI: ffffffff8c076d00
RBP: 0000000000000000 R08: ffffffff8175b995 R09: ffffffff8e560120
R10: ffffc900000e7278 R11: ffffffff81af6830 R12: 0000000000000002
R13: ffffffff8e560120 R14: 0000000000000000 R15: 0000000000000000
 unwind_next_frame+0xc2/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __reset_page_owner+0x71/0x1f0
 __free_frozen_pages+0xbb9/0xd10
 __slab_free+0x263/0x2b0
 qlist_free_all+0x97/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_noprof+0x316/0x760
 kobject_get_path+0xc5/0x2f0
 kobject_uevent_env+0x2a1/0x9e0
 device_del+0x750/0x8f0
 firmware_fallback_sysfs+0x38d/0xa30
 _request_firmware+0x1052/0x1780
 request_firmware_work_func+0xaf/0x1c0
 process_one_work+0x949/0x1650
 worker_thread+0x9af/0xee0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
task:kworker/0:7     state:R  running task     stack:25064 pid:5889  tgid:5889  ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: mld mld_dad_work
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 preempt_schedule_common+0x82/0xd0
 preempt_schedule_thunk+0x16/0x30
 __local_bh_enable_ip+0xe1/0x130
 ip6t_do_table+0x137d/0x1560
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x255/0x3a0
 mld_sendpack+0x8b4/0xe40
 mld_dad_work+0x46/0x490
 process_one_work+0x949/0x1650
 worker_thread+0x9af/0xee0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: rcu_preempt kthread starved for 2795 jiffies! g8365 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:28416 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x153e/0x5070
 schedule+0x164/0x360
 schedule_timeout+0x158/0x2c0
 rcu_gp_fqs_loop+0x312/0x11d0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 ret_from_fork+0x51e/0xb90
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 5885 Comm: syz.0.6 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
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 9d 37 10 f6 f7 c3 00 02 00 00 74 05 e8 10 ba 3a f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 74 28 02 f6 65 8b 05 3d e4 66 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc90000a07e48 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000202 RCX: 0000000080000104
RDX: 0000000000000002 RSI: ffffffff8dcf1f4e RDI: 0000000000000001
RBP: ffffc90000a07ef8 R08: ffffffff8ff0e0b7 R09: 1ffffffff1fe1c16
R10: dffffc0000000000 R11: fffffbfff1fe1c17 R12: ffff8881af17fe00
R13: ffffea0006bc5fd0 R14: ffff888160416d80 R15: 0000000000000202
FS:  00007f6b928fe6c0(0000) GS:ffff8882a96a4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2396503440 CR3: 0000000114bdc000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 get_from_partial_node+0x47a/0x500
 ___slab_alloc+0xae/0x6a0
 kmem_cache_alloc_noprof+0x12d/0x650
 skb_ext_add+0x1b6/0x8f0
 br_nf_forward_ip+0xc6/0x7e0
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x23e/0x3f0
 __br_forward+0x397/0x540
 maybe_deliver+0xb5/0x160
 br_flood+0x31a/0x690
 br_handle_frame_finish+0x1492/0x1b40
 br_nf_hook_thresh+0x3dd/0x4c0
 br_nf_pre_routing_finish_ipv6+0xa3a/0xd70
 br_nf_pre_routing_ipv6+0x374/0x6f0
 br_handle_frame+0x1277/0x1510
 __netif_receive_skb_core+0x98f/0x30f0
 __netif_receive_skb+0x72/0x370
 process_backlog+0x54e/0x1340
 __napi_poll+0xae/0x320
 net_rx_action+0x696/0xe30
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 d5 d2 ed 09 f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 51 50 57 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 2e c0 53
RSP: 0018:ffffc9000708f250 EFLAGS: 00000296
RAX: 30d4ccfba9ea0300 RBX: 0000000000000246 RCX: 0000000080000003
RDX: 00000000d64019c1 RSI: ffffffff8df5fbe0 RDI: ffffffff8c076d00
RBP: 0000000000000000 R08: ffffffff82384dca R09: ffffffff8e5601e0
R10: dffffc0000000000 R11: fffff940000fafc9 R12: 0000000000000002
R13: ffffffff8e5601e0 R14: 0000000000000000 R15: 0000000000000000
 pfn_valid+0xd6/0x480
 page_table_check_set+0x25/0x610
 copy_pmd_range+0x3b71/0x7e80
 copy_page_range+0xbe8/0x11f0
 dup_mmap+0xf40/0x1d90
 copy_mm+0x13b/0x4b0
 copy_process+0x18b5/0x3cf0
 kernel_clone+0x248/0x8e0
 __x64_sys_clone+0x1b6/0x230
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6b9199acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6b928fdfd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f6b91c15fa0 RCX: 00007f6b9199acb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f6b91a08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6b91c16038 R14: 00007f6b91c15fa0 R15: 00007fff2573e578
 </TASK>
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 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)
net_ratelimit: 2922 callbacks suppressed
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 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 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 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
