rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=e13c/1/0x4000000000000000 softirq=16879/16880 fqs=4508
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1259559          0            0
rcu: 	cputime:     7964      44525           36   ==> 52490(ms)
rcu: 	(t=10501 jiffies g=12057 q=5317 ncpus=2)
CPU: 0 UID: 0 PID: 6637 Comm: syz.1.209 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+0x221/0x350
Code: ff ff ff e8 41 e1 00 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 cb 3b 95 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d d8 8c 91
RSP: 0018:ffffc90000006c80 EFLAGS: 00000282
RAX: c93d8b4a1160d400 RBX: 0000000000000000 RCX: 0000000000000302
RDX: 00000000ad89c943 RSI: ffffffff8e2138b9 RDI: ffffffff8c2897a0
RBP: ffffffff81769f7f R08: ffffffff81769f7f R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e95c700 R12: 0000000000000002
R13: ffffffff8e95c700 R14: 0000000000000000 R15: 0000000000000246
FS:  00007f83ee9d76c0(0000) GS:ffff88818dcb8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3521f1 CR3: 00000001154f2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 unwind_next_frame+0xac/0x2550
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x640
 ieee80211_inform_bss+0xbda/0x10d0
 cfg80211_inform_single_bss_data+0xd9c/0x1be0
 cfg80211_inform_bss_data+0x26e/0x3d80
 cfg80211_inform_bss_frame_data+0x3c7/0x730
 ieee80211_bss_info_update+0x791/0xa50
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x2a11/0x3740
 ieee80211_rx_napi+0x1ad/0x3d0
 ieee80211_handle_queued_frames+0xe4/0x1d0
 tasklet_action_common+0x2da/0x4a0
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:generic_exec_single+0x3e7/0x430
Code: 75 11 e8 5c 12 0c 00 48 85 db 75 16 e8 52 12 0c 00 eb 15 e8 4b 12 0c 00 e8 f6 f6 e8 09 48 85 db 74 ea e8 3c 12 0c 00 fb 31 c0 <48> 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 20
RSP: 0018:ffffc90004a2fa60 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 0000000000080000
RDX: ffffc90008aba000 RSI: 00000000000002a7 RDI: 00000000000002a8
RBP: 0000000000000001 R08: ffffffff902f72f7 R09: 1ffffffff205ee5e
R10: dffffc0000000000 R11: fffffbfff205ee5f R12: 1ffff92000945f61
R13: 1ffff92000945f63 R14: 0000000000000000 R15: ffffc90004a2fb18
 smp_call_function_single+0x34a/0x5a0
 perf_install_in_context+0x5bd/0x900
 __se_sys_perf_event_open+0x1906/0x1d40
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f83edb9ce59
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:00007f83ee9d7028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f83ede15fa0 RCX: 00007f83edb9ce59
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f83edc32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f83ede16038 R14: 00007f83ede15fa0 R15: 00007ffe49e79308
 </TASK>
sched: DL replenish lagged too much
