rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 13447 jiffies s: 7121 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6997 Comm: syz.1.318 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:native_apic_msr_write+0x39/0x50
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 80 b0 14 0a cc f3 0f 1e fa 89 f6 31 d2 e9 a2 f3 92 03 66
RSP: 0018:ffffc900001dfa48 EFLAGS: 00000046
RAX: 00000000000001c8 RBX: ffff888136623900 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000001c8 RDI: 0000000000000838
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81ae0dbe
R10: 0000000000000003 R11: ffffffff81710550 R12: 0000000010004eda
R13: dffffc0000000000 R14: 00000000000001c8 R15: 0000000000000020
FS:  00007f15e22436c0(0000) GS:ffff8881a39e0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005565c2d14de8 CR3: 000000003f9c6000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x1cf/0x360
 hrtimer_interrupt+0x620/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:unwind_next_frame+0x214/0x2390
Code: ef 08 8b 15 be f4 6a 0c 8d 42 ff 44 39 f8 0f 86 65 18 00 00 44 89 f8 4c 8d 2c 85 70 98 01 91 4c 89 e8 48 c1 e8 03 0f b6 04 28 <84> c0 48 89 eb 0f 85 1c 1c 00 00 45 8b 6d 00 44 89 f8 ff c0 48 8d
RSP: 0018:ffffc900001dfcb8 EFLAGS: 00000a07
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 32bcb542a2900300
RDX: 00000000000a87c8 RSI: ffffffff8c0381e0 RDI: ffffffff8c0381a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8173bd25
R10: ffffc900001dfde8 R11: fffff5200003bfc9 R12: ffffffff8173e5c7
R13: ffffffff91036804 R14: ffffc900001dfde8 R15: 00000000000073e5
 __unwind_start+0x5b9/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x411/0x7f0
 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:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 0f 69 f5 09 e8 ca 4f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 58 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900086f7698 EFLAGS: 00000282
RAX: 32bcb542a2900300 RBX: 0000000000000000 RCX: 32bcb542a2900300
RDX: 0000000000000007 RSI: ffffffff8dbc0fba RDI: ffffffff8c038200
RBP: ffffc900086f76f0 R08: ffffffff8fc43c37 R09: 1ffffffff1f88786
R10: dffffc0000000000 R11: fffffbfff1f88787 R12: ffff88810e25ba00
R13: dffffc0000000000 R14: ffff88801caa1d00 R15: ffff88813663abd8
 __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 63 ea 0a f6 e9 7e bc 01 00 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: 0000:ffffc900086f7a98 EFLAGS: 00000293
RAX: ffffffff81879776 RBX: ffff88810e25ba00 RCX: ffff88810e25ba00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900086f7ae8 R08: 0000000000000000 R09: ffffffff818437e2
R10: dffffc0000000000 R11: fffffbfff1f88787 R12: dffffc0000000000
R13: 0000000000000009 R14: ffff88810e25c350 R15: 0000000000000000
 preempt_schedule_thunk+0x16/0x30
 exit_signals+0x49b/0x600
 do_exit+0x352/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0xa0/0x790
 irqentry_exit_to_user_mode+0x81/0x120
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f15e138eba9
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:00007f15e2243038 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00007f15e15d5fa0 RCX: 00007f15e138eba9
RDX: 0000200000000400 RSI: 0000000000005452 RDI: 0000000000000004
RBP: 00007f15e1411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f15e15d6038 R14: 00007f15e15d5fa0 R15: 00007fffae848d08
 </TASK>
sched: DL replenish lagged too much
