rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10467 ticks this GP) idle=1dc4/1/0x4000000000000000 softirq=22356/22626 fqs=5212
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1186592        855            0
rcu: 	cputime:    33534      18949           46   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=14581 q=3418 ncpus=2)
CPU: 0 UID: 0 PID: 6869 Comm: syz.6.336 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_read_lock+0x30/0x60
Code: 48 8b 1c 25 08 d0 a0 92 48 81 c3 44 04 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 75 18 ff 03 <8b> 03 3d 00 00 00 40 7d 07 5b c3 cc cc cc cc cc 90 0f 0b 90 eb f3
RSP: 0018:ffffc90000007688 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff8881067ca104 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffffff810014ca RDI: ffffc90000007768
RBP: dffffc0000000000 R08: ffffc90000007830 R09: 000000000000000e
R10: ffffc900000077b8 R11: ffffffff81ac5140 R12: 1ffff92000000eed
R13: ffffc900000077a0 R14: ffffc90000007768 R15: ffffc9000479f448
FS:  00007fcbec5926c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8673c477db CR3: 0000000038a64000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 unwind_next_frame+0x9e/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:vmalloc_to_page+0x2a0/0x6d0
Code: 0f 00 49 21 c7 48 c7 c0 68 a4 bd 8d 48 c1 e8 03 42 80 3c 28 00 74 0c 48 c7 c7 68 a4 bd 8d e8 d7 d0 10 00 4c 8b 35 d8 31 ab 0b <4d> 01 f7 48 89 d8 48 c1 e8 1e 25 ff 01 00 00 4d 8d 3c c7 4c 89 f8
RSP: 0018:ffffc9000479f4f8 EFLAGS: 00000246
RAX: 1ffffffff1b7b48d RBX: ffffe8ff146233c0 RCX: ffff8881067c9cc0
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffffffff1be6dd1 R08: ffffffff8fa3a837 R09: 1ffffffff1f47506
R10: dffffc0000000000 R11: fffffbfff1f47507 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff888000000000 R15: 000000001a43f000
 free_percpu+0x209/0xf50
 percpu_counter_destroy_many+0x23f/0x3e0
 __mmdrop+0x31b/0x570
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule+0x0/0xc0
Code: 00 00 e8 83 92 14 f6 c3 cc cc cc cc cc 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 <f3> 0f 1e fa 55 48 89 e5 41 56 53 48 83 e4 e0 48 83 ec 60 65 48 8b
RSP: 0018:ffffc9000479fa40 EFLAGS: 00000283
RAX: ffffffff81b4503b RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90020c5e000 RSI: 00000000000003bb RDI: 00000000000003bc
RBP: ffffc9000479fa90 R08: ffffffff8fa3a837 R09: 1ffffffff1f47506
R10: dffffc0000000000 R11: fffffbfff1f47507 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff920008f3f58 R15: 1ffff920008f3f58
 preempt_schedule_thunk+0x16/0x30
 smp_call_function_single+0x470/0x590
 perf_install_in_context+0x593/0x8f0
 __se_sys_perf_event_open+0x193a/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcbeb78eba9
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:00007fcbec592038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fcbeb9d5fa0 RCX: 00007fcbeb78eba9
RDX: affffff7ffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fcbeb811e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcbeb9d6038 R14: 00007fcbeb9d5fa0 R15: 00007ffeb0909798
 </TASK>
