rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10449 ticks this GP) idle=e474/1/0x4000000000000000 softirq=20631/20970 fqs=5240
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1272337        845            0
rcu: 	cputime:    31048      21445           56   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=16269 q=21751 ncpus=2)
CPU: 1 UID: 0 PID: 7404 Comm: syz.2.372 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_release+0x3a7/0x3e0
Code: 0f a3 05 4c 1e 06 0e 49 89 dd 4d 89 fe 0f 83 9a fc ff ff 65 ff 05 39 4e 03 11 48 8b 05 f2 5f f0 0d 48 85 c0 74 0f 48 8b 78 08 <4c> 89 fe 48 89 da e8 4e 39 ff ff 65 ff 0d 17 4e 03 11 49 89 dd 4d
RSP: 0018:ffffc900001e0310 EFLAGS: 00000286
RAX: ffff88802513e590 RBX: ffffffff8172c195 RCX: 47a9bd9c29a20400
RDX: ffffffff902a9f00 RSI: ffffffff8172c195 RDI: ffffffff8e009000
RBP: dffffc0000000000 R08: 0000000000000022 R09: ffffffff8172c195
R10: ffffc900001e0498 R11: ffffffff81ac3ae0 R12: 00007f646bbf6038
R13: ffffffff8172c195 R14: ffffffff8e139f20 R15: ffffffff8e139f20
FS:  00007f646bbf66c0(0000) GS:ffff8881a3c14000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564ab5858ca8 CR3: 000000010b0e8000 CR4: 00000000000006f0
DR0: 00000000000000fd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0x19a9/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 skb_copy+0x188/0x800
 mac80211_hwsim_tx_frame_no_nl+0xcd3/0x11c0
 mac80211_hwsim_tx_frame+0x1b5/0x200
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:__srcu_check_read_flavor+0x57/0x150
Code: 85 c3 0f 85 87 00 00 00 49 bc 00 00 00 00 00 fc ff df 65 4c 8b 35 71 d5 fa 10 49 83 c7 08 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 <74> 08 4c 89 ff e8 5f 37 7d 00 4d 8b 2f 4f 8d 3c 2e 49 83 c7 20 4c
RSP: 0018:ffffc90008326ee8 EFLAGS: 00000246
RAX: 1ffffffff1c02b51 RBX: 0000000000000002 RCX: 0000000008327002
RDX: ffffc90008a39000 RSI: 0000000000000002 RDI: ffffffff8e015a80
RBP: ffffc90008327070 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1c02b20 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff8881a3c14000 R15: ffffffff8e015a88
 console_flush_all+0x123/0xc40
 console_unlock+0xc4/0x270
 vprintk_emit+0x5b7/0x7a0
 _printk+0xcf/0x120
 handle_startup_event+0x680/0xd20
 genl_family_rcv_msg_doit+0x215/0x300
 genl_rcv_msg+0x60e/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f646d98eba9
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:00007f646bbf6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f646dbd6090 RCX: 00007f646d98eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000010
RBP: 00007f646da11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f646dbd6128 R14: 00007f646dbd6090 R15: 00007ffd8ef2dbf8
 </TASK>
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7404 Comm: syz.2.372 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:__sanitizer_cov_trace_pc+0x8/0x70
Code: 8b 3d a4 76 fe 0b 48 89 de 5b e9 a3 a2 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 08 c0 a0 92 65 8b 15 c8 11 e1 10 81 e2 00 01 ff 00
RSP: 0018:ffffc900001e0438 EFLAGS: 00000046
RAX: ffffffff81f2f492 RBX: 1ffff9200003c090 RCX: ffff888020b09cc0
RDX: 0000000000010100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0670 R08: ffffc900001e03c7 R09: 1ffff9200003c078
R10: dffffc0000000000 R11: fffff5200003c079 R12: ffffc900001e0958
R13: 1ffff11003953278 R14: ffff88801ca993c0 R15: 0000000000000000
FS:  00007f646bbf66c0(0000) GS:ffff8881a3c14000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564ab5858ca8 CR3: 000000010b0e8000 CR4: 00000000000006f0
DR0: 00000000000000fd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_swevent_hrtimer+0x2c2/0x550
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:seqcount_lockdep_reader_access+0x17e/0x1c0
Code: 00 4d 85 e4 75 16 e8 11 aa 11 00 eb 15 e8 0a aa 11 00 e8 d5 93 cc 09 4d 85 e4 74 ea e8 fb a9 11 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3e 00 00 00 00 66 43 c7 44 3e 09 00 00 43 c6 44 3e 0b 00
RSP: 0018:ffffc900001e0a00 EFLAGS: 00000246
RAX: ffffffff81ae0455 RBX: 0000000000000000 RCX: ffff888020b09cc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0ab8 R08: ffffffff8fa39037 R09: 1ffffffff1f47206
R10: dffffc0000000000 R11: fffffbfff1f47207 R12: 0000000000000200
R13: ffff888114ab91d0 R14: 1ffff9200003c140 R15: dffffc0000000000
 ktime_get_with_offset+0x8c/0x2a0
 __mac80211_hwsim_beacon_tx+0x2b8/0x6b0
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:__sanitizer_cov_trace_pc+0x58/0x70
Code: 00 74 2c 8b 91 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 8b 89 1c 16 00 00 48 39 cf 73 08 48 89 3a <48> 89 44 f2 08 c3 cc cc cc cc cc 66 66 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90008326b18 EFLAGS: 00000283
RAX: ffffffff81a143c8 RBX: dffffc0000000000 RCX: 0000000000080000
RDX: ffffc90008a39000 RSI: 000000000001f7a1 RDI: 000000000001f7a2
RBP: ffffc90008326d00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 00000000ffffea38 R14: ffffc90008326c68 R15: ffffffff8e051f70
 get_data+0x28/0x860
 _prb_read_valid+0x672/0xa90
 prb_read_valid+0x3c/0x60
 printk_get_next_message+0x15c/0x7b0
 console_flush_all+0x4ca/0xc40
 console_unlock+0xc4/0x270
 vprintk_emit+0x5b7/0x7a0
 _printk+0xcf/0x120
 handle_startup_event+0x680/0xd20
 genl_family_rcv_msg_doit+0x215/0x300
 genl_rcv_msg+0x60e/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f646d98eba9
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:00007f646bbf6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f646dbd6090 RCX: 00007f646d98eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000010
RBP: 00007f646da11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f646dbd6128 R14: 00007f646dbd6090 R15: 00007ffd8ef2dbf8
 </TASK>
sched: DL replenish lagged too much
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 7404 Comm: syz.2.372 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 c3 cc cc cc cc cc f3 0f 1e fa 89 f6 31 d2 e9 12 b5 8e 03 66
RSP: 0018:ffffc900001e0798 EFLAGS: 00000046
RAX: 00000000000000a3 RBX: ffff888136623900 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000000a3 RDI: 0000000000000838
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff81ae04ee
R10: 0000000000000003 R11: ffffffff81703490 R12: 0000000010001c85
R13: dffffc0000000000 R14: 00000000000000a3 R15: 0000000000000020
FS:  00007f646bbf66c0(0000) GS:ffff8881a3c14000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564ab5858ca8 CR3: 000000010b0e8000 CR4: 00000000000006f0
DR0: 00000000000000fd DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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:__ieee80211_beacon_get+0xbab/0x1880
Code: 89 e2 e8 b8 da 00 00 48 8b 44 24 30 4c 8d b8 bc 07 00 00 4c 89 fd 48 c1 ed 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 44 2d 00 <84> c0 0f 85 ad 09 00 00 4c 89 7c 24 08 41 8b 37 48 8d 53 10 48 89
RSP: 0018:ffffc900001e0a00 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffff888114aedc00 RCX: ffff888020b09cc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff110234d72bf R08: ffff888020b09cc0 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8881148e2500
R13: dffffc0000000000 R14: ffff8881148e29d0 R15: ffff88811a6b95fc
 ieee80211_beacon_get_tim+0xb4/0x2b0
 mac80211_hwsim_beacon_tx+0x3ce/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:console_flush_all+0x7f7/0xc40
Code: 48 21 c3 0f 85 e9 01 00 00 e8 65 49 1f 00 48 8b 5c 24 20 4d 85 f6 75 07 e8 56 49 1f 00 eb 06 e8 4f 49 1f 00 fb 48 8b 44 24 28 <42> 80 3c 20 00 74 08 48 89 df e8 1a bd 82 00 48 8b 1b 48 8b 44 24
RSP: 0018:ffffc90008326f20 EFLAGS: 00000283
RAX: 1ffffffff1d3686f RBX: ffffffff8e9b4378 RCX: 0000000000080000
RDX: ffffc90008a39000 RSI: 0000000000021156 RDI: 0000000000021157
RBP: ffffc90008327070 R08: ffffffff8fa39037 R09: 1ffffffff1f47206
R10: dffffc0000000000 R11: fffffbfff1f47207 R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000200 R15: ffffffff8e9b4320
 console_unlock+0xc4/0x270
 vprintk_emit+0x5b7/0x7a0
 _printk+0xcf/0x120
 handle_startup_event+0x680/0xd20
 genl_family_rcv_msg_doit+0x215/0x300
 genl_rcv_msg+0x60e/0x790
 netlink_rcv_skb+0x208/0x470
 genl_rcv+0x28/0x40
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f646d98eba9
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:00007f646bbf6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f646dbd6090 RCX: 00007f646d98eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000010
RBP: 00007f646da11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f646dbd6128 R14: 00007f646dbd6090 R15: 00007ffd8ef2dbf8
 </TASK>
