------------[ cut here ]------------
WARNING: CPU: 1 PID: 14245 at kernel/rcu/tree_stall.h:1050 rcu_check_gp_start_stall+0x2e4/0x470
Modules linked in:
CPU: 1 UID: 0 PID: 14245 Comm: syz.7.2326 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:rcu_check_gp_start_stall+0x2e4/0x470
Code: ff ff 48 c7 c7 20 54 b0 99 be 04 00 00 00 e8 33 62 7c 00 4c 89 f7 b8 01 00 00 00 87 05 55 4b 09 18 85 c0 0f 85 17 ff ff ff 90 <0f> 0b 90 48 81 ff 40 f4 13 8e 74 47 48 c7 c0 60 dc a3 8f 48 c1 e8
RSP: 0018:ffffc900001e0bb8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000a02 RCX: ffffffff81a708bd
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8e13f440
RBP: ffffc900001e0e30 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff3360a84 R12: 0000000000002904
R13: 1ffff11026cc75f2 R14: ffffffff8e13f440 R15: dffffc0000000000
FS:  000055555ce3d500(0000) GS:ffff8881a3c13000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab22c36fc8 CR3: 000000003c056000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x5fa/0x1770
 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:smp_call_function_single+0x3a9/0x590
Code: 33 44 89 f6 83 e6 01 31 ff e8 23 7a 0b 00 41 83 e6 01 75 11 e8 d8 75 0b 00 4d 89 fe eb 3f e8 ce 75 0b 00 eb 3c 4d 89 fe f3 90 <43> 0f b6 04 2c 84 c0 75 0f f7 03 01 00 00 00 74 1d e8 b1 75 0b 00
RSP: 0018:ffffc90006497a40 EFLAGS: 00000293
RAX: ffffffff81b44b4f RBX: ffffc90006497a88 RCX: ffff888038dfd640
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90006497b30 R08: ffffc900064978e7 R09: 1ffff92000c92f1c
R10: dffffc0000000000 R11: fffff52000c92f1d R12: 1ffff92000c92f51
R13: dffffc0000000000 R14: 1ffff92000c92f4c R15: 1ffff92000c92f4c
 event_function_call+0x25d/0x970
 perf_event_release_kernel+0x15d/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: 0033:0x7f3813f8eba9
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:00007ffe1436a748 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f38141d7da0 RCX: 00007f3813f8eba9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f38141d7da0 R08: 0000000000000214 R09: 0000001e1436aa3f
R10: 00007f38141d7cb0 R11: 0000000000000246 R12: 000000000005c84b
R13: 00007f38141d6180 R14: ffffffffffffffff R15: 00007ffe1436a860
 </TASK>
