rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10500 ticks this GP) idle=e66c/1/0x4000000000000000 softirq=127002/127004 fqs=4662
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1231090          6            0
rcu: 	cputime:    29879      22610           43   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=94973 q=48101 ncpus=2)
CPU: 0 UID: 0 PID: 11110 Comm: syz.7.1280 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_next_frame+0x395/0x2390
Code: e0 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 6d 19 00 00 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 80 19 00 00 41 0f b6 44 24 01 <83> e0 07 0f 84 75 15 00 00 83 f8 01 4c 8b 7c 24 48 48 bd 00 00 00
RSP: 0018:ffffc90000006d38 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff9027668c RCX: ffffffff90276690
RDX: ffffffff90db637e RSI: ffffffff90db637e RDI: ffffffff8be332a0
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8172c195
R10: ffffc90000006e58 R11: ffffffff81ac3930 R12: ffffffff90db6382
R13: ffffffff90db6383 R14: ffffc90000006e08 R15: ffffffff9027668c
FS:  00007f6bf54ad6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6bf54acfc8 CR3: 000000003eeb8000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/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:memcg_rstat_updated+0xd9/0x220
Code: 4a 8d 2c 2b 48 83 c5 10 49 89 ee 49 c1 ee 03 4d 89 fc 43 80 3c 3e 00 74 08 48 89 ef e8 80 7c f8 ff 48 89 6c 24 10 4c 8b 7d 00 <b8> a8 06 00 00 49 01 c7 4c 89 ff be 04 00 00 00 e8 d2 7e f8 ff 4c
RSP: 0018:ffffc900032c7b40 EFLAGS: 00000246
RAX: 1ffffffff1b7bda2 RBX: ffff8880b861c000 RCX: 8654a79e1ac13100
RDX: ffffc900289ea000 RSI: ffffffff8be332e0 RDI: ffffffff8be332a0
RBP: ffffe8ff146727d0 R08: 0000000000000000 R09: ffffffff822bd3d5
R10: dffffc0000000000 R11: ffffed1021835834 R12: dffffc0000000000
R13: 0000607e5c0567c0 R14: 1ffffd1fe28ce4fa R15: ffff888117bbf000
 mod_memcg_state+0x113/0x2f0
 refill_obj_stock+0x4df/0x850
 obj_cgroup_charge_account+0x116/0x660
 __memcg_slab_post_alloc_hook+0x3e6/0x7f0
 kmem_cache_alloc_lru_noprof+0x2c7/0x3d0
 sock_alloc_inode+0x28/0xc0
 alloc_inode+0x6a/0x1b0
 __sock_create+0x12d/0x9f0
 __sys_socket+0xd7/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6bf458ebe9
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:00007f6bf54ad038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f6bf47b5fa0 RCX: 00007f6bf458ebe9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000010
RBP: 00007f6bf4611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6bf47b6038 R14: 00007f6bf47b5fa0 R15: 00007ffc7f343dc8
 </TASK>
