rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10480 ticks this GP) idle=7e94/1/0x4000000000000000 softirq=18300/18648 fqs=5227
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1085290        952            0
rcu: 	cputime:    32560      19935           46   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=11317 q=6956 ncpus=2)
CPU: 1 UID: 0 PID: 6448 Comm: syz.3.94 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:unwind_next_frame+0x17e7/0x2390
Code: 89 da e8 4c 0e 00 00 84 c0 0f 84 47 01 00 00 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 20 0f b6 04 28 84 c0 0f 85 f4 08 00 00 <b3> 01 8b 84 24 84 00 00 00 41 39 06 4c 8b 7c 24 48 48 8b 7c 24 70
RSP: 0018:ffffc900001e03d8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff90408004 RCX: 0000000000000001
RDX: ffffc900001e04e8 RSI: dffffc0000000000 RDI: ffffc900001e0818
RBP: dffffc0000000000 R08: ffffc900001e0818 R09: 0000000000000000
R10: ffffc900001e04f8 R11: fffff5200003c0a1 R12: ffffc900001e0818
R13: ffffc900001e04f8 R14: ffffc900001e04a8 R15: 1ffffffff2081000
FS:  00007fb72ec196c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc65173a8e5 CR3: 000000010f2a2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000f3060a
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 __netdev_alloc_skb+0x108/0x970
 __ieee80211_beacon_get+0xc06/0x1880
 ieee80211_beacon_get_tim+0xb4/0x2b0
 mac80211_hwsim_beacon_tx+0x3ce/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:refill_obj_stock+0x34e/0x850
Code: 44 24 0c e8 84 ae 00 00 45 31 ff 84 db 74 4c 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 0f 85 70 04 00 00 41 8b 1e <81> fb 01 10 00 00 72 29 89 dd 81 e5 ff 0f 00 00 48 b8 00 00 00 00
RSP: 0018:ffffc900024ff628 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000002358 RCX: 0000000000000000
RDX: 0000000000000006 RSI: dffffc0000000000 RDI: ffffffff8be33300
RBP: 0000000000002008 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff8880312e7700
R13: 1ffff11026cc76a7 R14: ffff88813663b538 R15: 0000000000000000
 __memcg_slab_free_hook+0x127/0x3d0
 kfree+0x255/0x440
 __mmdrop+0x323/0x580
 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:perf_install_in_context+0x595/0x8f0
Code: 4d 89 ec 49 c1 ec 03 43 0f b6 04 3c 84 c0 75 63 41 8b 7d 00 48 c7 c6 10 89 f0 81 4c 89 f2 b9 01 00 00 00 e8 5d 27 c4 ff 89 c3 <31> ff 89 c6 e8 62 a4 cf ff 85 db 74 0c e8 19 a0 cf ff 83 fb f5 74
RSP: 0000:ffffc900024ffba0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc90028261000 RSI: 0000000000000286 RDI: 0000000000000287
RBP: ffffc900024ffcf0 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 1ffff110043a7002
R13: ffff888021d38014 R14: ffffc900024ffc20 R15: dffffc0000000000
 __se_sys_perf_event_open+0x193a/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb72dd8ebe9
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:00007fb72ec19038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fb72dfc5fa0 RCX: 00007fb72dd8ebe9
RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007fb72de11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb72dfc6038 R14: 00007fb72dfc5fa0 R15: 00007ffdf7cafef8
 </TASK>
