rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=5d5c/1/0x4000000000000000 softirq=62959/62961 fqs=5
rcu: 	(detected by 0, t=10502 jiffies, g=54825, q=174 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 15312 Comm: syz.8.2721 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:mark_lock+0x96/0x190
Code: 3d 92 3b 06 0e 00 75 19 90 48 c7 c7 17 89 ba 8d 48 c7 c6 75 d7 a9 8d e8 78 bc e5 ff 90 0f 0b 90 90 90 31 c9 4c 89 fe 4c 89 f7 <b8> 01 00 00 00 85 69 60 74 10 5b 41 5c 41 5d 41 5e 41 5f 5d e9 11
RSP: 0018:ffffc900001e0718 EFLAGS: 00000006
RAX: 0000000000005078 RBX: 0000000000000000 RCX: ffffffff9349e388
RDX: 0000000000000000 RSI: ffff888125a78b18 RDI: ffff888125a78000
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff81ada78b
R10: dffffc0000000000 R11: ffffed1026cc4f51 R12: ffffffffffffff02
R13: 0000000000000002 R14: ffff888125a78b18 R15: 0000000000000000
FS:  00007f8772ef76c0(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31f23ffc CR3: 0000000100ea0000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __lock_acquire+0x65a/0xd20
 lock_acquire+0x120/0x360
 _raw_spin_lock_irqsave+0xa7/0xf0
 hrtimer_try_to_cancel+0x22b/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+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 1a 81 20 f6 48 89 df e8 72 18 21 f6 e8 6d 6b 4a f6 fb bf 01 00 00 00 <e8> 42 10 13 f6 65 8b 05 cb d0 23 07 85 c0 74 07 5b c3 cc cc cc cc
RSP: 0018:ffffc90007c0fbb8 EFLAGS: 00000286
RAX: 94005b025e2fff00 RBX: ffff88810b23e400 RCX: 94005b025e2fff00
RDX: 0000000000000006 RSI: ffffffff8d9ba2f8 RDI: 0000000000000001
RBP: 0000000000000001 R08: ffffffff8fa3aa37 R09: 1ffffffff1f47546
R10: dffffc0000000000 R11: fffffbfff1f47547 R12: ffff888120321fe8
R13: dffffc0000000000 R14: ffff88810b23e400 R15: 1ffff110240643fd
 _perf_event_refresh+0x107/0x250
 perf_ioctl+0x5e5/0x1ec0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8771f8eba9
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:00007f8772ef7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f87721d5fa0 RCX: 00007f8771f8eba9
RDX: 0000000000000001 RSI: 0000000000002402 RDI: 0000000000000003
RBP: 00007f8772011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f87721d6038 R14: 00007f87721d5fa0 R15: 00007fffc871a918
 </TASK>
rcu: rcu_preempt kthread starved for 10492 jiffies! g54825 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:26664 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: 15305 Comm: syz.9.2719 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:__sanitizer_cov_trace_pc+0x4/0x70
Code: 00 00 00 48 8b 3d 94 73 fe 0b 48 89 de 5b e9 53 b1 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> 8b 04 24 65 48 8b 0c 25 08 d0 a0 92 65 8b 15 b8 0e e1 10 81 e2
RSP: 0018:ffffc90007c3f898 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff11026cc7f61 RCX: ffff88801fb8d640
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90007c3fa20 R08: ffffffff8fa3aa37 R09: 1ffffffff1f47546
R10: dffffc0000000000 R11: fffffbfff1f47547 R12: ffff88813663fb08
R13: dffffc0000000000 R14: ffff88804b03b1c0 R15: 0000000000000001
FS:  000055556d73c500(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000010893a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000082 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 smp_call_function_many_cond+0xd4b/0x12d0
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5f9/0x1130
 arch_jump_label_transform_apply+0x1c/0x30
 static_key_disable_cpuslocked+0xc5/0x1b0
 static_key_disable+0x1a/0x20
 tracepoint_probe_unregister+0x80e/0x9b0
 trace_event_reg+0x153/0x270
 perf_trace_event_unreg+0xb9/0x1b0
 perf_trace_destroy+0xa4/0x150
 __free_event+0x346/0x7e0
 perf_event_release_kernel+0x45b/0x510
 perf_release+0x38/0x50
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f293a38eba9
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:00007fff82250118 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000060bd4 RCX: 00007f293a38eba9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f293a5d7da0 R08: 0000000000000001 R09: 0000001e8225040f
R10: 0000001b33c20000 R11: 0000000000000246 R12: 00007f293a5d5fac
R13: 00007f293a5d5fa0 R14: ffffffffffffffff R15: 00007fff82250230
 </TASK>
