rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (9820 ticks this GP) idle=00ac/1/0x4000000000000000 softirq=33048/33048 fqs=4587
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   758119          0            0
rcu: 	cputime:    37716      14730           67   ==> 52460(ms)
rcu: 	(t=10501 jiffies g=21545 q=4380 ncpus=2)
CPU: 0 UID: 0 PID: 8420 Comm: syz.5.651 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_get_return_address+0x0/0x90
Code: f7 49 89 f7 e8 d1 9a b0 00 4c 89 f7 4c 89 fe e9 29 ff ff ff e8 61 b7 06 0a 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 41 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000006e00 EFLAGS: 00000202
RAX: ffffc90000006e90 RBX: ffffc90000006ec0 RCX: ac85326185a7f001
RDX: ffffc90000006e98 RSI: dffffc0000000000 RDI: ffffc90000006e08
RBP: ffffc90000006e90 R08: ffffc90000006e90 R09: 0000000000000000
R10: ffffc90000006e58 R11: fffff52000000dcd R12: ffff888021818000
R13: ffff88811f538c00 R14: ffffffff81ac4a90 R15: ffffc90000006e08
FS:  00007f25dea316c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000028e48000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 cfg80211_inform_single_bss_data+0x905/0x1ac0
 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:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 5b 6a 15 f6 e8 16 c5 4c f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000351fc60 EFLAGS: 00000286
RAX: ac85326185a7f000 RBX: 0000000000000000 RCX: ac85326185a7f000
RDX: 0000000000000000 RSI: ffffffff8d9b7034 RDI: 0000000000000001
RBP: ffffc9000351fd10 R08: ffffffff8fa38237 R09: 1ffffffff1f47046
R10: dffffc0000000000 R11: fffffbfff1f47047 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920006a3f8c
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__sock_create+0x45d/0x9f0
Code: 68 f8 4d 85 e4 0f 84 37 01 00 00 49 8d 5c 24 10 48 89 d8 48 c1 e8 03 48 89 44 24 38 80 3c 28 00 74 08 48 89 df e8 83 e3 cb f8 <48> 8b 3b e8 0b 2e 53 f8 84 c0 0f 84 0f 01 00 00 e8 8e 05 00 00 49
RSP: 0018:ffffc9000351fdd8 EFLAGS: 00000246
RAX: 1ffffffff1957be2 RBX: ffffffff8cabdf10 RCX: ffff888021818000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff895775dc
R10: ffff88811430c8c0 R11: ffffffff81ac4a90 R12: ffffffff8cabdf00
R13: ffff888123cb48c0 R14: 0000000000000021 R15: 0000000000000000
 __sys_socketpair+0x1c5/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25ddb8ebe9
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:00007f25dea31038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f25dddc6090 RCX: 00007f25ddb8ebe9
RDX: 0000000000000006 RSI: 0000000000000800 RDI: 0000000000000021
RBP: 00007f25ddc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25dddc6128 R14: 00007f25dddc6090 R15: 00007ffe34c5d288
 </TASK>
sched: DL replenish lagged too much
