rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=5204/1/0x4000000000000000 softirq=54293/54293 fqs=1
rcu: 	(detected by 1, t=10502 jiffies, g=45189, q=285 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 12116 Comm: syz.9.1612 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_lock_irqsave+0x27/0xf0
Code: 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 54 53 48 83 e4 e0 48 83 ec 60 48 89 fb 65 48 8b 05 1e ec 40 07 48 89 44 24 48 <48> c7 04 24 b3 8a b5 41 48 c7 44 24 08 39 96 c1 8d 48 c7 44 24 10
RSP: 0018:ffffc90000007880 EFLAGS: 00000082
RAX: aff8b3423025c700 RBX: ffff88804b027ac0 RCX: ffff8880209a3a00
RDX: 0000000000010000 RSI: 0000000000000000 RDI: ffff88804b027ac0
RBP: ffffc90000007918 R08: ffff88804b027ac3 R09: 1ffff11009604f58
R10: dffffc0000000000 R11: ffffed1009604f59 R12: ffff88802054a0d8
R13: ffff88804b027b40 R14: dffffc0000000000 R15: ffff88804b027b40
FS:  00007f6e811796c0(0000) GS:ffff8880b8403000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6e81157fc8 CR3: 0000000039304000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 hrtimer_try_to_cancel+0x22b/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+0x3b8/0x500
 __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_irqrestore+0xa8/0x110
Code: 74 05 e8 3b 1a 47 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 23 b5 0f f6 65 8b 05 dc e8 40 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc9000457faa0 EFLAGS: 00000206
RAX: aff8b3423025c700 RBX: 0000000000000a02 RCX: aff8b3423025c700
RDX: 0000000000000000 RSI: ffffffff8db9e917 RDI: 0000000000000001
RBP: ffffc9000457fb28 R08: ffffffff8fc34377 R09: 1ffffffff1f8686e
R10: dffffc0000000000 R11: fffffbfff1f8686f R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888105a3c450 R15: 1ffff920008aff54
 try_to_wake_up+0x7b7/0x12b0
 wake_up_q+0x85/0xd0
 futex_wake+0x4a0/0x560
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e8038ec29
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:00007f6e811790e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f6e805d5fa8 RCX: 00007f6e8038ec29
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f6e805d5fac
RBP: 00007f6e805d5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6e805d6038 R14: 00007ffdb8138690 R15: 00007ffdb8138778
 </TASK>
rcu: rcu_preempt kthread starved for 10500 jiffies! g45189 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:27224 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
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+0x4bc/0x870
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 12121 Comm: syz.8.1614 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:smp_call_function_many_cond+0xd46/0x12d0
Code: e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 d1 6e 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> b5 6e 0b 00 eb e4 44 89 e1 80 e1 07 80 c1 03 38 c1 7c e2 4c 89
RSP: 0018:ffffc90004f6f420 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 1ffff11009608441 RCX: 0000000000080000
RDX: ffffc90003f39000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90004f6f5a0 R08: ffffffff8fc34377 R09: 1ffffffff1f8686e
R10: dffffc0000000000 R11: fffffbfff1f8686f R12: ffff88804b042208
R13: dffffc0000000000 R14: ffff88813663b200 R15: 0000000000000000
FS:  00007fe5f00aa6c0(0000) GS:ffff8881a3a03000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000640 CR3: 0000000022608000 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
 __static_call_transform+0x4eb/0x750
 arch_static_call_transform+0x98/0xc0
 __static_call_update+0xe4/0x5d0
 tracepoint_add_func+0x91e/0xa10
 tracepoint_probe_register+0x5d/0x90
 perf_trace_event_init+0x4e1/0x9d0
 perf_trace_init+0x23d/0x2d0
 perf_tp_event_init+0x8d/0x120
 perf_try_init_event+0x17f/0x870
 perf_event_alloc+0x133e/0x2be0
 __se_sys_perf_event_open+0x772/0x1d70
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe5ef18ec29
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:00007fe5f00aa038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fe5ef3d5fa0 RCX: 00007fe5ef18ec29
RDX: ffffffffffffffff RSI: 00000000000000f3 RDI: 0000200000000640
RBP: 00007fe5ef211e41 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe5ef3d6038 R14: 00007fe5ef3d5fa0 R15: 00007ffddb5c42e8
 </TASK>
