rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10436 ticks this GP) idle=8084/1/0x4000000000000000 softirq=18839/18992 fqs=5214
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1231389        499            0
rcu: 	cputime:    33319      19168           47   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=11165 q=5395 ncpus=2)
CPU: 1 UID: 0 PID: 6931 Comm: syz.1.237 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:lock_acquire+0x18d/0x360
Code: 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 4b e3 02 11 48 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f <5d> c3 cc cc cc cc cc 65 8b 05 35 23 03 11 85 c0 75 ce 65 8b 05 2a
RSP: 0018:ffffc900001df9c0 EFLAGS: 00000282
RAX: e442ae8e72843800 RBX: ffffffff8184ecb6 RCX: e442ae8e72843800
RDX: 0000000000000000 RSI: ffffffff8dba5cac RDI: ffffffff8be33300
RBP: ffffffff8172c195 R08: 0000000000000000 R09: ffffffff8172c195
R10: ffffc900001dfaf8 R11: ffffffff81ac3930 R12: 1ffff9200003bf55
R13: ffffc900001dfae0 R14: ffffc900001dfaa8 R15: ffffffff8172c195
FS:  00007f8d4fa5b6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000000385c4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xc2/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/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:pagetable_dtor_free+0xe4/0x3b0
Code: f2 44 89 fe e8 0d 2e 4b 00 41 81 ff 00 00 00 f2 0f 85 ba 02 00 00 e8 bb 29 4b 00 48 b9 00 00 00 00 00 fc ff df 41 0f b6 04 0c <49> 89 cc 84 c0 0f 85 48 02 00 00 41 c7 06 ff ff ff ff eb 0f e8 93
RSP: 0018:ffffc90002bbee60 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffea0004375480 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 00000000f2000000 RDI: 00000000f2000000
RBP: ffffc90002bbef10 R08: ffffffff8dfab283 R09: 1ffffffff1bf5650
R10: dffffc0000000000 R11: fffffbfff1bf5651 R12: 1ffffd400086ea96
R13: 1ffff92000577dcc R14: ffffea00043754b0 R15: 00000000f2000000
 __mmdrop+0xb5/0x580
 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:unwind_next_frame+0x0/0x2390
Code: 0a cc 89 d9 80 e1 07 80 c1 03 38 c1 7c 92 48 89 df e8 d4 5f b0 00 eb 88 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 81 ec 98 00 00 00 49
RSP: 0018:ffffc90002bbf340 EFLAGS: 00000287
RAX: ffffc90002bbf430 RBX: ffffc90002bbf3a8 RCX: 0000000000000001
RDX: ffffc90002bbf438 RSI: dffffc0000000000 RDI: ffffc90002bbf3a8
RBP: 1ffff92000577e76 R08: ffffc90002bbf401 R09: 0000000000000000
R10: ffffc90002bbf3a8 R11: fffff52000577e81 R12: ffffc90002bbf3e0
R13: ffffc90002bbf3b8 R14: 1ffff92000577e77 R15: ffffc90002bbf3b0
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 save_stack+0xf5/0x1f0
 __reset_page_owner+0x71/0x1f0
 __free_frozen_pages+0xbc4/0xd30
 __put_partials+0x156/0x1a0
 put_cpu_partial+0x17c/0x250
 __slab_free+0x2d5/0x3c0
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 security_file_alloc+0x34/0x330
 init_file+0x93/0x2f0
 alloc_empty_file+0x6e/0x1d0
 path_openat+0x107/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d4eb8d550
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 49 94 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 9c 94 02 00 8b 44
RSP: 002b:00007f8d4fa5af10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f8d4eb8d550
RDX: 0000000000000002 RSI: 00007f8d4fa5afa0 RDI: 00000000ffffff9c
RBP: 00007f8d4fa5afa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f8d4edb6128 R14: 00007f8d4edb6090 R15: 00007ffc223babe8
 </TASK>
sched: DL replenish lagged too much
