rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10395 ticks this GP) idle=200c/1/0x4000000000000000 softirq=21593/21593 fqs=4866
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1332728          0            0
rcu: 	cputime:    10150      42328           34   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=17329 q=7133 ncpus=2)
CPU: 1 UID: 0 PID: 7370 Comm: syz.2.428 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:its_return_thunk+0x0/0x10
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 2b 87 87 f5 cc
RSP: 0018:ffffc90000a07e80 EFLAGS: 00000246
RAX: ffffffff8187e919 RBX: ffffc90000a07f40 RCX: 0000000000000100
RDX: 0000000000000001 RSI: ffffffff8e21d80b RDI: ffffffff8187e919
RBP: ffffc90000a07f10 R08: ffffc90000a07ee7 R09: 0000000000000000
R10: ffffc90000a07ed8 R11: fffff52000140fdd R12: ffff88810d1a0000
R13: ffff888166be1c80 R14: ffffffff81b0eb70 R15: ffffc90000a07e88
FS:  00007f116f1ca6c0(0000) GS:ffff8882a9289000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c352662 CR3: 000000010a966000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0xfb/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x35c/0x760
 cfg80211_inform_single_bss_data+0x934/0x1af0
 cfg80211_inform_bss_data+0x266/0x3c40
 cfg80211_inform_bss_frame_data+0x3c7/0x730
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x29f8/0x3740
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/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:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 83 dc e9 f5 e8 de f2 23 f6 fb bf 01 00 00 00 <e8> 53 a2 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 a4 f4 23 f6 bf 01
RSP: 0018:ffffc9000484fd70 EFLAGS: 00000202
RAX: 000000000001836b RBX: ffff88810d1a0000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8dfaa584 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9030b8f7 R09: 1ffffffff206171e
R10: dffffc0000000000 R11: fffffbfff206171f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x14f/0x760
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:arch_do_signal_or_restart+0x4/0x840
Code: 8b 05 98 69 bd 0c e9 1b 13 43 0a cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec e0 00
RSP: 0018:ffffc9000484fe98 EFLAGS: 00000202
RAX: 0000000000009205 RBX: ffffc9000484ff48 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8dfaa584 RDI: ffffc9000484ff48
RBP: ffffc9000484ff38 R08: ffffffff9030b8f7 R09: 1ffffffff206171e
R10: dffffc0000000000 R11: fffffbfff206171f R12: 000000009fffffff
R13: 00000000ffffe000 R14: 0000000000080002 R15: ffff88810d1a0000
 exit_to_user_mode_loop+0x8c/0x4d0
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f116e39cdd9
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:00007f116f1ca028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000007 RBX: 00007f116e615fa0 RCX: 00007f116e39cdd9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f116e432d69 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f116e616038 R14: 00007f116e615fa0 R15: 00007fff13198488
 </TASK>
sched: DL replenish lagged too much
