rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (8232 ticks this GP) idle=53b4/1/0x4000000000000000 softirq=22828/22828 fqs=3925
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1093965          1            0
rcu: 	cputime:    33184      19303          402   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=15913 q=15086 ncpus=2)
CPU: 1 UID: 0 PID: 7566 Comm: syz.2.443 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_next_frame+0x32/0x2390
Code: 56 41 55 41 54 53 48 81 ec 98 00 00 00 49 89 fe 48 bd 00 00 00 00 00 fc ff df 48 8d 5f 48 48 89 d8 48 c1 e8 03 48 89 44 24 30 <80> 3c 28 00 74 08 48 89 df e8 10 18 b1 00 48 89 5c 24 18 49 8b 5e
RSP: 0018:ffffc900001dfbf8 EFLAGS: 00000a02
RAX: 1ffff9200003bfa2 RBX: ffffc900001dfd10 RCX: 2cfc4e5437db0500
RDX: dffffc0000000000 RSI: ffffffff8ace037b RDI: ffffc900001dfcc8
RBP: dffffc0000000000 R08: ffffc900001dfd90 R09: 0000000000000006
R10: dffffc0000000000 R11: ffffffff81ac5140 R12: ffff888026250000
R13: 0000000000000000 R14: ffffc900001dfcc8 R15: ffffc900001dfcc8
FS:  00007fb9e9aa76c0(0000) GS:ffff8881a3c11000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000003ca18000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kfree+0x18e/0x440
 ieee80211_inform_bss+0xbd9/0x10a0
 cfg80211_inform_single_bss_data+0xd05/0x1ac0
 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:rcu_read_unlock_special+0x87/0x4b0
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 92 be f9 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90009707780 EFLAGS: 00000206
RAX: 2cfc4e5437db0500 RBX: 1ffff920012e0ef4 RCX: 2cfc4e5437db0500
RDX: 0000000000000006 RSI: ffffffff8d9baf27 RDI: ffffffff8be34480
RBP: ffffc90009707860 R08: ffffffff8fa3b537 R09: 1ffffffff1f476a6
R10: dffffc0000000000 R11: fffffbfff1f476a7 R12: ffffffff8e13f400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
 __rcu_read_unlock+0x84/0xe0
 trace_call_bpf+0x5ae/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock+0x2f8/0x3b0
 lock_release+0x3b2/0x3e0
 _raw_spin_unlock+0x16/0x50
 fasync_insert_entry+0x1df/0x270
 fasync_helper+0x52/0xb0
 perf_fasync+0xc3/0x110
 do_vfs_ioctl+0x1064/0x1430
 __se_sys_ioctl+0x82/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb9e8b8ec29
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:00007fb9e9aa7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb9e8dd5fa0 RCX: 00007fb9e8b8ec29
RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007fb9e8c11e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb9e8dd6038 R14: 00007fb9e8dd5fa0 R15: 00007ffcb6897ef8
 </TASK>
sched: DL replenish lagged too much
