rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10448 ticks this GP) idle=8204/1/0x4000000000000000 softirq=22729/22730 fqs=4811
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1270788          0            0
rcu: 	cputime:    34102      18304           36   ==> 52410(ms)
rcu: 	(t=10500 jiffies g=16881 q=3171 ncpus=2)
CPU: 1 UID: 0 PID: 7853 Comm: syz.3.508 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:cfg80211_inform_single_bss_data+0xcd6/0x1b70
Code: 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 5e 7d 34 f7 bb 20 01 00 00 49 03 1e 48 89 d8 48 c1 e8 03 42 80 3c 20 00 <74> 08 48 89 df e8 40 7d 34 f7 48 8b 1b 48 85 db 74 22 e8 73 18 ca
RSP: 0018:ffffc90000a082e0 EFLAGS: 00000246
RAX: 1ffffffff19fa198 RBX: ffffffff8cfd0cc0 RCX: ffff8881bd739d40
RDX: 0000000000000100 RSI: ffffffff8c27c9e0 RDI: ffffffff8c27c9a0
RBP: ffffc90000a084d0 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: dffffc0000000000
R13: ffffc90000a08810 R14: ffff888100150000 R15: ffffc90000a08a00
FS:  00007f7886b816c0(0000) GS:ffff8882a945a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c29da1f CR3: 00000001739cc000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 cfg80211_inform_bss_data+0x266/0x3c40
 cfg80211_inform_bss_frame_data+0x3c7/0x760
 ieee80211_bss_info_update+0x794/0xa40
 ieee80211_scan_rx+0x552/0xa40
 ieee80211_rx_list+0x29e5/0x3710
 ieee80211_rx_napi+0x1b1/0x3e0
 ieee80211_handle_queued_frames+0xe8/0x1e0
 tasklet_action_common+0x2da/0x4b0
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:finish_task_switch+0x245/0x920
Code: 00 00 48 85 db 0f 85 e8 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 49 83 c4 48 4c 89 e7 e8 d5 65 1c 0a e8 30 81 38 00 fb 4c 8b 65 c0 <49> 8d bc 24 80 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc900066d6d58 EFLAGS: 00000202
RAX: 00000000000042a7 RBX: 0000000000000000 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8def8e53 RDI: ffffffff8c27ca00
RBP: ffffc900066d6db0 R08: ffffffff9011b4b7 R09: 1ffffffff2023696
R10: dffffc0000000000 R11: fffffbfff2023697 R12: ffff8881bd739d40
R13: dffffc0000000000 R14: ffff88816cb1ba80 R15: ffff88823c63b998
 __schedule+0x15e5/0x52d0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x599/0x620
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:kasan_check_range+0x97/0x2c0
Code: 00 fc ff df 4d 8d 34 19 4d 89 f4 4d 29 dc 49 83 fc 10 7f 29 4d 85 e4 0f 84 3d 01 00 00 4c 89 cb 48 f7 d3 4c 01 fb 41 80 3b 00 <0f> 85 9e 01 00 00 49 ff c3 48 ff c3 75 ee e9 1d 01 00 00 44 89 dd
RSP: 0018:ffffc900066d70e0 EFLAGS: 00000246
RAX: ffffc900066d7201 RBX: ffffffffffffffff RCX: ffffffff81768c9e
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc900066d72b8
RBP: 0000000000000000 R08: ffffc900066d72c7 R09: 1ffff92000cdae58
R10: dffffc0000000000 R11: fffff52000cdae58 R12: 0000000000000002
R13: 1ffff92000cdae4f R14: fffff52000cdae59 R15: 1ffff92000cdae57
 __asan_memset+0x22/0x50
 unwind_next_frame+0xeae/0x23c0
 __unwind_start+0x5b8/0x760
 arch_stack_walk+0xe3/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x187/0x630
 skb_release_data+0x6c3/0x940
 __kfree_skb+0x5d/0x210
 netlink_broadcast_filtered+0xee4/0x1020
 nlmsg_notify+0xf0/0x1a0
 inet6_ifmcaddr_notify+0x143/0x1e0
 __ipv6_dev_mc_inc+0x8a9/0xa50
 ipv6_add_dev+0xe34/0x13a0
 addrconf_notify+0x771/0x1050
 notifier_call_chain+0x1be/0x400
 register_netdevice+0x173a/0x1cf0
 ppp_dev_configure+0x8a4/0xb10
 ppp_ioctl+0x6de/0x1b10
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7885d9c799
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:00007f7886b81028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7886015fa0 RCX: 00007f7885d9c799
RDX: 000000110e22fff6 RSI: 00000000c004743e RDI: 000000000000004b
RBP: 00007f7885e32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7886016038 R14: 00007f7886015fa0 R15: 00007ffdb92d0de8
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 85778357638 wd_nsec: 85778363849
