rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10324 ticks this GP) idle=8b44/1/0x4000000000000000 softirq=27505/27537 fqs=4948
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1112241         88            0
rcu: 	cputime:    30335      22153           83   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=18453 q=3503 ncpus=2)
CPU: 0 UID: 0 PID: 8024 Comm: syz.3.558 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+0x68/0x90
Code: 89 df e8 0b 6f b0 00 48 8b 3b e8 63 c1 19 00 85 c0 74 14 43 80 3c 37 00 74 08 48 89 df e8 f0 6e b0 00 48 8b 03 eb 02 31 c0 5b <41> 5e 41 5f e9 0f 6c 0a 0a cc 89 d9 80 e1 07 80 c1 03 38 c1 7c a8
RSP: 0018:ffffc900000076b0 EFLAGS: 00000246
RAX: ffffffff8b7b4650 RBX: ffffc90000007780 RCX: 0b4056aec77a0c00
RDX: 0000000000000001 RSI: ffffffff8dba9832 RDI: ffffffff8b7b4650
RBP: ffffc90000007750 R08: ffffc90006dc7130 R09: 0000000000000000
R10: ffffc90000007718 R11: fffff52000000ee5 R12: ffff888106058000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000000ee2
FS:  00007f5721fda6c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2b105ea0c4 CR3: 000000012052e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0xfc/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 skb_release_data+0x62d/0x7c0
 consume_skb+0x9e/0xf0
 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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 cb 7b 4a f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e3 20 13 f6 65 8b 05 6c e1 23 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90006dc6ec0 EFLAGS: 00000206
RAX: 0b4056aec77a0c00 RBX: 0000000000000a02 RCX: 0b4056aec77a0c00
RDX: 0000000000000000 RSI: ffffffff8d9ba160 RDI: 0000000000000001
RBP: ffffc90006dc6f50 R08: ffffffff8fa3a837 R09: 1ffffffff1f47506
R10: dffffc0000000000 R11: fffffbfff1f47507 R12: dffffc0000000000
R13: 1ffff92000db8dfc R14: ffffffff99d9d540 R15: 1ffff92000db8dd8
 call_rcu+0xc3/0x9c0
 put_task_stack+0x180/0x210
 finish_task_switch+0x454/0x950
 __schedule+0x17a0/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x9a/0x270
 wait_woken+0xbd/0x1b0
 __inet_stream_connect+0x8f4/0xe80
 tcp_sendmsg_fastopen+0x3a7/0x5e0
 tcp_sendmsg_locked+0x4d9b/0x5620
 tcp_sendmsg+0x2f/0x50
 __sock_sendmsg+0x19c/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: 0033:0x7f572118eba9
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:00007f5721fda038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f57213d5fa0 RCX: 00007f572118eba9
RDX: 0000000030004081 RSI: 0000200000000080 RDI: 0000000000000005
RBP: 00007f5721211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f57213d6038 R14: 00007f57213d5fa0 R15: 00007ffc5054a838
 </TASK>
sched: DL replenish lagged too much
