rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (7128 ticks this GP) idle=ed3c/1/0x4000000000000000 softirq=15953/15953 fqs=4563
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   810292          0            0
rcu: 	cputime:    37132      15366           56   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=8953 q=2652 ncpus=2)
CPU: 1 UID: 0 PID: 6314 Comm: syz.3.107 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:post_alloc_hook+0x1ea/0x2a0
Code: 00 10 00 00 49 ff cf 0f 84 0f ff ff ff 48 b8 00 00 00 00 00 fc ff df 80 7c 05 00 00 74 0c 48 c7 c7 78 64 bd 8d e8 c6 c7 0d 00 <4c> 8b 2d a7 fb a7 0b 48 b8 00 00 00 00 00 fc ff df 41 80 3c 06 00
RSP: 0018:ffffc900001df938 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffed1023b3c000
RBP: 1ffffffff1b7ac8f R08: ffffffff8fa38137 R09: 0000000000000000
R10: ffffed1023b3b000 R11: fffffbfff1f47027 R12: fffa80011d9d8000
R13: ffffea0004767600 R14: 1ffffffff1b7ac8d R15: 0000000000000008
FS:  00007fc6f0b7a6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005606d49ca088 CR3: 0000000116936000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x8a/0x370
 ___slab_alloc+0xbeb/0x1410
 __kmalloc_noprof+0x305/0x4f0
 ieee802_11_parse_elems_full+0x152/0x2ab0
 ieee80211_inform_bss+0x10c/0x10a0
 cfg80211_inform_single_bss_data+0xd05/0x1ac0
 cfg80211_inform_bss_data+0x1fb/0x3b30
 cfg80211_inform_bss_frame_data+0x3d7/0x730
 ieee80211_bss_info_update+0x746/0x9e0
 ieee80211_scan_rx+0x593/0xa20
 ieee80211_rx_list+0x201c/0x2a90
 ieee80211_rx_napi+0x1a8/0x3d0
 ieee80211_handle_queued_frames+0xe8/0x1f0
 tasklet_action_common+0x36c/0x580
 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:finish_task_switch+0x32b/0x950
Code: 42 0f b6 04 28 84 c0 0f 85 e3 02 00 00 f7 03 20 00 00 00 0f 85 c8 01 00 00 f3 0f 1e fa 4c 89 ff be 04 00 00 00 e8 e5 1b 92 00 <f0> 41 ff 0f 0f 84 b1 00 00 00 81 7d a8 80 00 00 00 0f 84 b9 00 00
RSP: 0018:ffffc90002dcf8f8 EFLAGS: 00000256
RAX: 1ffff110042af001 RBX: ffff888021579678 RCX: ffffffff8191174b
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888022e4eb80
RBP: ffffc90002dcf950 R08: ffff888022e4eb83 R09: 1ffff110045c9d70
R10: dffffc0000000000 R11: ffffed10045c9d71 R12: ffff888021578558
R13: dffffc0000000000 R14: ffff8881073b1cc0 R15: ffff888022e4eb80
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:perf_unpin_context+0x0/0x70
Code: c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <41> 56 53 48 89 fb e8 85 bc d0 ff 48 89 df e8 7d eb 8c 09 48 8d 8b
RSP: 0018:ffffc90002dcfcf8 EFLAGS: 00000246
RAX: fd6db7451d30d700 RBX: ffff8880229c3000 RCX: 0000000000080000
RDX: ffffc90028395000 RSI: 000000000000030c RDI: ffff8880229c3000
RBP: ffffc90002dcfee0 R08: ffffffff8fa38137 R09: 1ffffffff1f47026
R10: dffffc0000000000 R11: fffffbfff1f47027 R12: ffff8880229c3150
R13: ffff8880396d3200 R14: ffff888021578000 R15: 1ffff920005b9fb0
 __se_sys_perf_event_open+0x1942/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc6efd8eba9
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:00007fc6f0b7a038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fc6effd6090 RCX: 00007fc6efd8eba9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000100
RBP: 00007fc6efe11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc6effd6128 R14: 00007fc6effd6090 R15: 00007fff8cd3dc48
 </TASK>
sched: DL replenish lagged too much
