rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (7 ticks this GP) idle=c5e4/1/0x4000000000000000 softirq=58445/58445 fqs=4
rcu: 	(detected by 0, t=10503 jiffies, g=46321, q=881 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13291 Comm: syz.9.2053 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:perf_trace_buf_alloc+0x9/0x2a0
Code: 43 80 7c 25 00 00 75 ce eb d4 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 <41> 55 41 54 53 50 49 89 d7 49 89 f6 89 fb e8 b4 72 f6 ff bf 00 20
RSP: 0018:ffffc900001df6c0 EFLAGS: 00000003
RAX: 1ffffffff1c0124d RBX: ffffffff8dbe2d18 RCX: ffffe8ffffc22768
RDX: ffffc900001df760 RSI: ffffc900001df740 RDI: 000000000000002c
RBP: ffffc900001df7c8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200003bef8 R12: 1ffff9200003bee4
R13: 0000000000000012 R14: 000000000000002c R15: dffffc0000000000
FS:  00007fa5f9f846c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000d000 CR3: 0000000033fb4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_trace_lock+0x18d/0x3b0
 lock_release+0x3b2/0x3e0
 _raw_spin_unlock_irqrestore+0x70/0x110
 hrtimer_try_to_cancel+0x3be/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+0x3c5/0x550
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_lockdep_current_cpu_online+0xf1/0x120
Code: 7c 00 4c 85 3b 75 1a 48 c7 c7 40 fd 13 8e be 04 00 00 00 e8 11 86 7c 00 83 3d ea 41 6d 0c 00 74 16 b0 01 65 ff 0d cf 14 fa 10 <74> 0f 5b 41 5e 41 5f c3 cc cc cc cc cc 31 c0 eb e8 e8 d9 0b 8d ff
RSP: 0018:ffffc900001e0090 EFLAGS: 00000206
RAX: 1ffffffff1c27e01 RBX: ffffffff8e13f4b0 RCX: aae3534a810aff00
RDX: ffff8880200e9cc0 RSI: ffffffff8be33de0 RDI: ffff88813663afa8
RBP: ffffc900001e01b8 R08: 0000000000000000 R09: ffffffff81cb1857
R10: dffffc0000000000 R11: fffff91ffff90b36 R12: 0000000000000001
R13: 1ffff9200003c024 R14: dffffc0000000000 R15: 0000000000000002
 rcu_read_lock_held+0x1e/0x50
 trace_call_bpf+0x734/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock+0x2f8/0x3b0
 lock_release+0x3b2/0x3e0
 is_module_text_address+0x18b/0x1e0
 kernel_text_address+0x94/0xe0
 __kernel_text_address+0xd/0x40
 unwind_get_return_address+0x4d/0x90
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_mempool_unpoison_object+0xa0/0x170
 napi_skb_cache_get+0x37b/0x6d0
 __alloc_skb+0x11e/0x2d0
 napi_alloc_skb+0x84/0x7d0
 e1000_clean_rx_irq+0x448/0x1170
 e1000_clean+0xca4/0x2b00
 __napi_poll+0xc7/0x360
 net_rx_action+0x707/0xe30
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:check_preemption_disabled+0x4a/0x120
Code: 0d bb 5e 26 07 f7 c1 ff ff ff 7f 74 23 65 48 8b 0d 9b 5e 26 07 48 3b 4c 24 08 0f 85 cc 00 00 00 48 83 c4 10 5b 41 5e 41 5f 5d <e9> 81 ca 02 00 cc 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00
RSP: 0018:ffffc90004a6ee48 EFLAGS: 00000286
RAX: 0000000000000001 RBX: 0000000000000000 RCX: aae3534a810aff00
RDX: ffff8880200e9cc0 RSI: ffffffff8be33de0 RDI: ffffffff8be33da0
RBP: ffffc90004a6ef78 R08: ffffc90004a6ef0f R09: 0000000000000000
R10: ffffc90004a6ef00 R11: fffff5200094dde2 R12: 0000000000000001
R13: ffffc90004a6ef00 R14: ffff88810b698700 R15: ffffffff8e009268
 rcu_is_watching+0x15/0xb0
 rcu_read_lock_held+0x15/0x50
 trace_call_bpf+0x1f4/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock+0x2f8/0x3b0
 lock_release+0x3b2/0x3e0
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 __kernfs_new_node+0xd7/0x7e0
 kernfs_new_node+0x102/0x210
 __kernfs_create_file+0x4b/0x2e0
 sysfs_add_file_mode_ns+0x238/0x300
 internal_create_group+0x66d/0x1110
 sysfs_create_groups+0x59/0x120
 device_add_attrs+0xe0/0x5a0
 device_add+0x496/0xb50
 netdev_register_kobject+0x178/0x310
 register_netdevice+0x126c/0x1ae0
 tun_set_iff+0x844/0xef0
 __tun_chr_ioctl+0x788/0x1df0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa5f918eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa5f9f84038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa5f93d5fa0 RCX: 00007fa5f918eba9
RDX: 00002000000000c0 RSI: 00000000400454ca RDI: 0000000000000004
RBP: 00007fa5f9211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa5f93d6038 R14: 00007fa5f93d5fa0 R15: 00007ffd1333f2d8
 </TASK>
rcu: rcu_preempt kthread starved for 10490 jiffies! g46321 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:27224 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 1093 Comm: kworker/u9:6 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
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:smp_call_function_many_cond+0xd33/0x12d0
Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 56 63 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 01 5f 0b 00 eb 38 f3 90 <42> 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 e5 5e
RSP: 0018:ffffc90006ef7660 EFLAGS: 00000293
RAX: ffffffff81b4621b RBX: 1ffff11026cc7f61 RCX: ffff888021fd8000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90006ef77e0 R08: ffffffff8fa3a837 R09: 1ffffffff1f47506
R10: dffffc0000000000 R11: fffffbfff1f47507 R12: ffff88813663fb08
R13: dffffc0000000000 R14: ffff88804b03b1c0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8faef2ba8 CR3: 000000000df36000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5f9/0x1130
 arch_jump_label_transform_apply+0x1c/0x30
 static_key_enable_cpuslocked+0x128/0x250
 static_key_enable+0x1a/0x20
 toggle_allocation_gate+0xad/0x240
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
