rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10301 ticks this GP) idle=767c/1/0x4000000000000000 softirq=15108/15108 fqs=4328
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   726256          0            0
rcu: 	cputime:    21902      30577           64   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=7801 q=3053 ncpus=2)
CPU: 0 UID: 0 PID: 6000 Comm: syz.0.23 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_start+0x42d/0x760
Code: e9 34 b0 00 48 ba 00 00 00 00 00 fc ff df 4c 89 64 24 18 4d 8b 24 24 41 80 3c 17 00 74 08 4c 89 f7 e8 c7 34 b0 00 48 8b 73 28 <4c> 8d 6b 20 4c 89 e7 48 89 da 4c 89 e9 e8 91 e8 f2 ff 85 c0 48 be
RSP: 0018:ffffc90000006a48 EFLAGS: 00000246
RAX: 1ffff92000000d5c RBX: ffffc90000006aa8 RCX: ffffc90000006a48
RDX: dffffc0000000000 RSI: ffff888106299cc0 RDI: ffffc90000006b08
RBP: ffffc90000006a01 R08: ffffc90000006b07 R09: 0000000000000000
R10: ffffc90000006aa8 R11: fffff52000000d61 R12: ffffc90000006a48
R13: ffffc90000006ae8 R14: ffffc90000006ad0 R15: 1ffff92000000d5a
FS:  00007f2d91bf66c0(0000) GS:ffff8880b8614000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32612ff8 CR3: 000000010b234000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 ieee802_11_parse_elems_full+0x152/0x2ab0
 ieee80211_inform_bss+0x10c/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: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 ab 38 14 f6 e8 d6 94 4b 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:ffffc90004307b20 EFLAGS: 00000282
RAX: cd87e83a631ccc00 RBX: 0000000000000000 RCX: cd87e83a631ccc00
RDX: 0000000000000000 RSI: ffffffff8d9b9a1a RDI: 0000000000000001
RBP: ffffc90004307bc0 R08: ffffffff8fa38f37 R09: 1ffffffff1f471e6
R10: dffffc0000000000 R11: fffffbfff1f471e7 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000860f64
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__asan_handle_no_return+0x0/0x10
Code: 0c 24 ba 01 00 00 00 e9 ee f4 ff ff 66 66 66 66 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 e9 07 67 5a 09 cc 66 0f 1f 44 00 00 90 90 90 90 90 90
RSP: 0018:ffffc90004307c88 EFLAGS: 00000293
RAX: ffffffff81876dba RBX: 0000000000000000 RCX: ffff888106299cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000009 R08: ffffffff8fa38f37 R09: 1ffffffff1f471e6
R10: dffffc0000000000 R11: fffffbfff1f471e7 R12: 0000000000000000
R13: ffff888106299cec R14: 0000000000000008 R15: 1ffff11020c5339d
 get_signal+0x127f/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2d9398eba9
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:00007f2d91bf6038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 000000000000004e RBX: 00007f2d93bd6180 RCX: 00007f2d9398eba9
RDX: 7fffffffffffffff RSI: 0000000000000000 RDI: 0000200000000440
RBP: 00007f2d93a11e19 R08: 0000000000000003 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2d93bd6218 R14: 00007f2d93bd6180 R15: 00007ffc5e8dcfe8
 </TASK>
sched: DL replenish lagged too much
