rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=4f64/1/0x4000000000000000 softirq=14061/14064 fqs=4936
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   768442          3            0
rcu: 	cputime:    37945      14544           61   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=7073 q=3831 ncpus=2)
CPU: 1 UID: 0 PID: 6016 Comm: syz.1.35 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:stack_trace_consume_entry+0x0/0x280
Code: 75 0e 48 8d 65 f0 5b 41 5e 5d c3 cc cc cc cc cc e8 75 2c cd 09 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 ba 00 00
RSP: 0018:ffffc900001dfe00 EFLAGS: 00000286
RAX: ffffffff8185063a RBX: ffffc900001dfec0 RCX: 8c5725f4f89f3900
RDX: 0000000000000001 RSI: ffffffff8185063a RDI: ffffc900001dfec0
RBP: ffffc900001dfe90 R08: ffffc900001e0f50 R09: 0000000000000000
R10: ffffc900001dfe58 R11: ffffffff81ac4a90 R12: ffff888108d49cc0
R13: ffff88810a804080 R14: ffffffff81ac4a90 R15: ffffc900001dfe08
FS:  00007fcfe6f8f6c0(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000010ad9a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 arch_stack_walk+0x110/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 cfg80211_inform_single_bss_data+0x905/0x1ac0
 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:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 5b 6a 15 f6 e8 16 c5 4c f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc90004c1fa40 EFLAGS: 00000286
RAX: 8c5725f4f89f3900 RBX: ffff888108d49cc0 RCX: 8c5725f4f89f3900
RDX: 0000000000000000 RSI: ffffffff8d9b7034 RDI: 0000000000000001
RBP: ffffc90004c1faf0 R08: ffffffff8fa38237 R09: 1ffffffff1f47046
R10: dffffc0000000000 R11: fffffbfff1f47047 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000983f48
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:wake_up_q+0x8c/0xd0
Code: df e8 58 31 93 00 48 8d bb b0 f5 ff ff 4c 8b 23 48 c7 03 00 00 00 00 be 03 00 00 00 31 d2 e8 8b b6 00 00 4c 8d b3 d8 f5 ff ff <4c> 89 f7 be 04 00 00 00 e8 c7 33 93 00 b8 ff ff ff ff f0 0f c1 83
RSP: 0018:ffffc90004c1fbb8 EFLAGS: 00000292
RAX: 0000000000000001 RBX: ffff88810b1ce090 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8d9b7034 RDI: 00000000ffffffff
RBP: ffffc90004c1fcf0 R08: ffffffff8fa38237 R09: 1ffffffff1f47046
R10: dffffc0000000000 R11: fffffbfff1f47047 R12: 0000000000000001
R13: 0000000000000001 R14: ffff88810b1cd668 R15: dffffc0000000000
 futex_wake+0x4a0/0x560
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcfe618ebe9
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:00007fcfe6f8f0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fcfe63c5fa8 RCX: 00007fcfe618ebe9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fcfe63c5fac
RBP: 00007fcfe63c5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcfe63c6038 R14: 00007ffc0dcd1660 R15: 00007ffc0dcd1748
 </TASK>
sched: DL replenish lagged too much
