rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10493 ticks this GP) idle=5b74/1/0x4000000000000000 softirq=78083/78088 fqs=4837
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1278616          1            0
rcu: 	cputime:    30471      22008           76   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=75845 q=2455 ncpus=2)
CPU: 0 UID: 0 PID: 18656 Comm: syz.4.3802 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:arch_stack_walk+0x123/0x150
Code: 34 09 00 48 85 c0 74 24 48 89 df 48 89 c6 4d 89 f3 2e e8 10 96 13 0a 84 c0 74 11 4c 89 ff e8 b4 35 09 00 83 bd 78 ff ff ff 00 <75> cf 65 48 8b 05 d3 34 37 11 48 3b 45 d8 75 12 48 83 c4 68 5b 41
RSP: 0018:ffffc90000006c68 EFLAGS: 00000202
RAX: 0000000090d0f601 RBX: ffffc90000006d20 RCX: 82d0f12f297c6500
RDX: 0000000000000004 RSI: ffffffff8dba984d RDI: ffff88801fd5b980
RBP: ffffc90000006cf0 R08: ffffc900000070e0 R09: 0000000000000000
R10: ffffc90000006cb8 R11: fffff52000000d99 R12: ffff88801fd5b980
R13: ffffc90000007280 R14: ffffffff81ac4d00 R15: ffffc90000006c68
FS:  00007f6ef061d6c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ef05dbd58 CR3: 000000010ca2a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 stack_trace_save+0x9c/0xe0
 kasan_save_stack+0x3e/0x60
 kasan_record_aux_stack+0xbd/0xd0
 kvfree_call_rcu+0xbb/0x410
 cfg80211_update_known_bss+0x84b/0x13c0
 __cfg80211_bss_update+0x147/0x2120
 cfg80211_inform_single_bss_data+0xba9/0x1ac0
 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 8a 14 f6 e8 76 e7 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:ffffc9002498ea60 EFLAGS: 00000286
RAX: 82d0f12f297c6500 RBX: 0000000000000000 RCX: 82d0f12f297c6500
RDX: 0000000000000006 RSI: ffffffff8d9ba17b RDI: 0000000000000001
RBP: ffffc9002498eb10 R08: ffffffff8fa3a937 R09: 1ffffffff1f47526
R10: dffffc0000000000 R11: fffffbfff1f47527 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92004931d4c
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_acquire+0x175/0x360
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 7b 5f 03 11 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9002498ebd0 EFLAGS: 00000206
RAX: 82d0f12f297c6500 RBX: 0000000000000000 RCX: 82d0f12f297c6500
RDX: 0000000000000000 RSI: ffffffff8dba984d RDI: ffffffff8be33e80
RBP: ffffffff82186841 R08: 0000000000000000 R09: ffffffff82186841
R10: ffffc9002498eda0 R11: fffff52004931dcf R12: 0000000000000000
R13: ffffffff8e23fbc0 R14: 0000000000000001 R15: 0000000000000246
 fs_reclaim_acquire+0x72/0x100
 __kmalloc_cache_noprof+0x41/0x3d0
 ip_set_create+0x348/0x1940
 nfnetlink_rcv_msg+0xb4d/0x1130
 netlink_rcv_skb+0x208/0x470
 nfnetlink_rcv+0x26a/0x2520
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6eef78eba9
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:00007f6ef061d038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6eef9d5fa0 RCX: 00007f6eef78eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007f6eef811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6eef9d6038 R14: 00007f6eef9d5fa0 R15: 00007ffdacf26978
 </TASK>
