rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=4424/1/0x4000000000000000 softirq=22466/22466 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=16741, q=304 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7883 Comm: syz.2.627 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_lock+0x2f/0x3b0
Code: 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec c0 00 00 00 49 89 fe 65 48 8b 05 59 2e 04 11 48 89 84 24 a0 00 00 00 <49> bf 00 00 00 00 00 fc ff df 48 c7 44 24 40 b3 8a b5 41 48 c7 44
RSP: 0018:ffffc900001e0440 EFLAGS: 00000082
RAX: c082e82c9c0a7c00 RBX: ffffffff81cb2527 RCX: ffff88810f451cc0
RDX: ffffffff81cb2527 RSI: ffffffff8e13a160 RDI: ffffffff8e009240
RBP: ffffc900001e0538 R08: 0000000000000000 R09: ffffffff81cb1cf7
R10: 61625f72656d6974 R11: 6b636f6c2e736573 R12: 0000000000000001
R13: ffffffff81cb2527 R14: ffffffff8e009240 R15: ffffffff8e13a160
FS:  00007fdaef6836c0(0000) GS:ffff8881a3c11000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c362090 CR3: 0000000111686000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_release+0x3b2/0x3e0
 rcu_read_unlock+0x93/0xa0
 trace_call_bpf+0x7dd/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock+0x2f8/0x3b0
 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+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:debug_lockdep_rcu_enabled+0x2a/0x40
Code: f3 0f 1e fa 31 c0 83 3d 57 97 28 04 00 74 1e 83 3d 6a c7 28 04 00 74 15 65 48 8b 0c 25 08 f0 a0 92 31 c0 83 b9 ec 0a 00 00 00 <0f> 94 c0 e9 0e dd 02 00 cc cc cc cc cc cc cc cc cc cc cc cc cc cc
RSP: 0018:ffffc90002b8f8e8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88810f451cc0
RDX: ffff88810f451cc0 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002b8f9f8 R08: ffffc90002b8f98f R09: 0000000000000000
R10: ffffc90002b8f980 R11: fffff52000571f32 R12: 0000000000000001
R13: ffffc90002b8f980 R14: ffff88802846fb00 R15: ffffffff8e0092a8
 rcu_read_lock_held+0xa/0x50
 trace_call_bpf+0x1f4/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock+0x2f8/0x3b0
 lock_release+0x3b2/0x3e0
 _raw_spin_unlock+0x16/0x50
 futex_wake+0x493/0x560
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdaee78ec29
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:00007fdaef6830e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fdaee9d5fa8 RCX: 00007fdaee78ec29
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fdaee9d5fac
RBP: 00007fdaee9d5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fdaee9d6038 R14: 00007ffd78e17430 R15: 00007ffd78e17518
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g16741 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=7300
rcu: rcu_preempt kthread starved for 10502 jiffies! g16741 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27304 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>
