rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 13356 jiffies s: 100841 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15751 Comm: syz.8.2363 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 50 e0 3b 0a cc 89 f6 31 d2 e9 36 c3 76 03 66 0f 1f 44 00
RSP: 0018:ffffc90000007350 EFLAGS: 00000046
RAX: 000000000000003e RBX: ffff888121023e40 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000000003e RDI: 0000000000000838
RBP: 0000000000000000 R08: ffffffff81b2ca85 R09: ffffffff9a2b7508
R10: 0000000000000003 R11: ffffffff8173caf0 R12: 00000000100035af
R13: dffffc0000000000 R14: 000000000000003e R15: 0000000000000020
FS:  00007f01d313d6c0(0000) GS:ffff88818de63000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000171f2e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lapic_next_event+0x11/0x20
 clockevents_program_event+0x1c9/0x350
 hrtimer_interrupt+0xb08/0x1010
 __sysvec_apic_timer_interrupt+0x102/0x460
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80
Code: f7 e8 2d 9d f1 f5 f7 c3 00 02 00 00 74 05 e8 a0 f4 1c f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 64 5b e3 f5 65 8b 05 0d 40 6b 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc900000075c0 EFLAGS: 00000206
RAX: 0000000000000016 RBX: 0000000000000246 RCX: 0000000000000303
RDX: 0000000000000002 RSI: ffffffff8def4b7d RDI: 0000000000000001
RBP: dffffc0000000000 R08: ffffffff90118bb7 R09: 1ffffffff2023176
R10: dffffc0000000000 R11: fffffbfff2023177 R12: ffff888192727500
R13: ffff888192727555 R14: ffff8881b0e51a78 R15: ffff8881b0e50dc0
 __ieee80211_queue_skb_to_iface+0xa1/0x280
 ieee80211_rx_h_mgmt+0x490/0x630
 ieee80211_rx_handlers+0x67bf/0xc7d0
 ieee80211_prepare_and_rx_handle+0x25a1/0x67f0
 ieee80211_rx_list+0x2b53/0x3710
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 35 69 0c 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 b1 46 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 16 4f 0f 0a cc 48 8d 3d 3e 55 73
RSP: 0018:ffffc9000774fa58 EFLAGS: 00000282
RAX: c4089a44146a4f00 RBX: 0000000000000246 RCX: 0000000080000001
RDX: 00000000dc86fcb3 RSI: ffffffff8e165502 RDI: ffffffff8c27b400
RBP: 0000000000000001 R08: ffffffff82240fa8 R09: ffff88812103f338
R10: 667265705b3a6564 R11: 005d746e6576655f R12: 0000000000000000
R13: ffff88812103f338 R14: 0000000000000000 R15: 0000000000000001
 __kmalloc_noprof+0x1d4/0x760
 tomoyo_encode+0x28b/0x550
 tomoyo_realpath_from_path+0x58d/0x5d0
 tomoyo_path_number_perm+0x246/0x630
 security_file_ioctl+0xc3/0x2a0
 __se_sys_ioctl+0x47/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01d219c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f01d313d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f01d2415fa0 RCX: 00007f01d219c799
RDX: ffffffffffffffff RSI: 0000000040042408 RDI: 0000000000000005
RBP: 00007f01d2232c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01d2416038 R14: 00007f01d2415fa0 R15: 00007fffaf59d748
 </TASK>
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=d6a4/1/0x4000000000000000 softirq=77564/77565 fqs=4853
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   967056          0            0
rcu: 	cputime:    36317      16161           54   ==> 52480(ms)
rcu: 	(t=10501 jiffies g=66145 q=4308 ncpus=2)
CPU: 0 UID: 0 PID: 15751 Comm: syz.8.2363 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:rcu_is_watching+0x3a/0xb0
Code: e8 eb 5a 03 0a 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 90 d7 1a 8e 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 6c 37 85 00 48 c7 c3 58 09 1d 93 49 03 1e 48 89
RSP: 0018:ffffc90000006a78 EFLAGS: 00000246
RAX: 1ffffffff1c35af2 RBX: 0000000000000000 RCX: 0000000000000303
RDX: 0000000006ea34e4 RSI: ffffffff8c27b3e0 RDI: ffffffff8c27b3a0
RBP: dffffc0000000000 R08: ffffffff81767de5 R09: ffffffff8e75e3e0
R10: ffffc90000006bb8 R11: ffffffff81b0bfa0 R12: 1ffff92000000d6d
R13: ffffc90000006ba0 R14: ffffffff8e1ad790 R15: dffffc0000000000
FS:  00007f01d313d6c0(0000) GS:ffff88818de63000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 0000000171f2e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xd4/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x35c/0x760
 ieee802_11_parse_elems_full+0x159/0x2ab0
 ieee80211_inform_bss+0x161/0x1160
 cfg80211_inform_single_bss_data+0xd08/0x1b70
 cfg80211_inform_bss_data+0x266/0x3c40
 cfg80211_inform_bss_frame_data+0x3c7/0x760
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x29e5/0x3710
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x20b/0x2e0
Code: e9 30 ff ff ff e8 35 69 0c 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 b1 46 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 16 4f 0f 0a cc 48 8d 3d 3e 55 73
RSP: 0018:ffffc9000774fa58 EFLAGS: 00000282
RAX: c4089a44146a4f00 RBX: 0000000000000246 RCX: 0000000080000001
RDX: 00000000dc86fcb3 RSI: ffffffff8e165502 RDI: ffffffff8c27b400
RBP: 0000000000000001 R08: ffffffff82240fa8 R09: ffff88812103f338
R10: 667265705b3a6564 R11: 005d746e6576655f R12: 0000000000000000
R13: ffff88812103f338 R14: 0000000000000000 R15: 0000000000000001
 __kmalloc_noprof+0x1d4/0x760
 tomoyo_encode+0x28b/0x550
 tomoyo_realpath_from_path+0x58d/0x5d0
 tomoyo_path_number_perm+0x246/0x630
 security_file_ioctl+0xc3/0x2a0
 __se_sys_ioctl+0x47/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f01d219c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f01d313d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f01d2415fa0 RCX: 00007f01d219c799
RDX: ffffffffffffffff RSI: 0000000040042408 RDI: 0000000000000005
RBP: 00007f01d2232c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01d2416038 R14: 00007f01d2415fa0 R15: 00007fffaf59d748
 </TASK>
sched: DL replenish lagged too much
