rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=a074/1/0x4000000000000000 softirq=24057/24058 fqs=13
rcu: 	(detected by 0, t=10505 jiffies, g=21429, q=55 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8717 Comm: syz.0.874 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+0x7/0x190
Code: b0 fd ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 41 55 <41> 54 53 8b 46 20 89 c1 81 e1 00 00 03 00 83 f9 01 bb 09 00 00 00
RSP: 0018:ffffc900001e0728 EFLAGS: 00000046
RAX: 00000000000c4068 RBX: 0000000000000008 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff88801df90c98 RDI: ffff88801df90000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81ad9ddb
R10: dffffc0000000000 R11: ffffed1026cc4f59 R12: 0000000000000002
R13: 0000000000000002 R14: ffff88801df90c98 R15: 0000000000000000
FS:  00007f83bacbe6c0(0000) GS:ffff8881a39e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f83bacbdfc8 CR3: 0000000036016000 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+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:perf_trace_lock+0xe2/0x3b0
Code: 48 89 7c 24 28 e8 ae 01 e3 09 49 89 c5 49 8d 5e 60 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 d1 be 87 00 48 8b 03 <48> 89 44 24 10 e8 24 5d e7 09 89 c3 83 f8 08 0f 83 4a 02 00 00 48
RSP: 0018:ffffc900028df300 EFLAGS: 00000246
RAX: 0000607e5c258ef0 RBX: ffffffff8e20c520 RCX: 000000008ba89702
RDX: ffffffff81681651 RSI: ffff88801a882078 RDI: ffffffff8ba89740
RBP: ffffc900028df3f8 R08: ffffffff8fc43c37 R09: 1ffffffff1f88786
R10: dffffc0000000000 R11: fffffbfff1f88787 R12: 1ffff9200051be68
R13: 0000000000000012 R14: ffffffff8e20c4c0 R15: dffffc0000000000
 lock_release+0x3b2/0x3e0
 _raw_spin_unlock+0x16/0x50
 __text_poke+0x7b1/0xa10
 smp_text_poke_batch_finish+0x394/0x1130
 __static_call_transform+0x4eb/0x750
 arch_static_call_transform+0x98/0xc0
 __static_call_update+0xe4/0x5d0
 tracepoint_add_func+0x6f7/0xa10
 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: 0033:0x7f83b9d8eba9
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:00007f83bacbe038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f83b9fd5fa0 RCX: 00007f83b9d8eba9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f83b9e11e19 R08: 000000000000000a R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f83b9fd6038 R14: 00007f83b9fd5fa0 R15: 00007ffc16a80938
 </TASK>
rcu: rcu_preempt kthread starved for 10440 jiffies! g21429 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:26760 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+0x4bc/0x870
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 8709 Comm: syz.1.872 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+0xd33/0x12d0
Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 e6 7f 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 91 7b 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 75 7b
RSP: 0018:ffffc900027df2e0 EFLAGS: 00000293
RAX: ffffffff81b457ab RBX: 1ffff11026cc8005 RCX: ffff888020c4ba00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900027df460 R08: ffffffff8fc43c37 R09: 1ffffffff1f88786
R10: dffffc0000000000 R11: fffffbfff1f88787 R12: ffff888136640028
R13: dffffc0000000000 R14: ffff88804b03b240 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b83e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32109ff8 CR3: 000000000e138000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80
 flush_tlb_mm_range+0x6b1/0x12d0
 tlb_flush_mmu+0x1a7/0x680
 tlb_finish_mmu+0xc3/0x1d0
 free_ldt_pgtables+0x17b/0x320
 exit_mmap+0x174/0xb40
 __mmput+0x118/0x430
 exit_mm+0x1da/0x2c0
 do_exit+0x648/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0xa0/0x790
 irqentry_exit_to_user_mode+0x81/0x120
 exc_general_protection+0x171/0x200
 asm_exc_general_protection+0x26/0x30
RIP: 0033:0x7f8f9218ebb1
Code: Unable to access opcode bytes at 0x7f8f9218eb87.
RSP: 002b:0000200000000070 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f8f923d6090 RCX: 00007f8f9218eba9
RDX: 00002000000000c0 RSI: 0000200000000070 RDI: 0000000001000000
RBP: 00007f8f92211e19 R08: 0000200000000140 R09: 0000200000000140
R10: 0000200000000100 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f8f923d6128 R14: 00007f8f923d6090 R15: 00007ffc743d7988
 </TASK>
