rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=45f4/1/0x4000000000000000 softirq=23143/23144 fqs=4410
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   951221          0            0
rcu: 	cputime:    37376      15103           58   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=15541 q=3245 ncpus=2)
CPU: 0 UID: 0 PID: 8070 Comm: syz.3.646 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:rcu_is_watching+0x2e/0xb0
Code: 41 57 41 56 53 65 ff 05 00 e2 f9 10 e8 eb f2 d2 09 89 c3 83 f8 08 73 65 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 10 ed bd 8d <4c> 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 7c c2 7c 00
RSP: 0018:ffffc90000006820 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 218b5df00f849b00
RDX: 0000000000000100 RSI: ffffffff8be332e0 RDI: ffffffff8be332a0
RBP: ffffffff81cb03c7 R08: 0000000000000002 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff91fe28cc5c9 R12: 0000000000000002
R13: ffffffff8e139ea0 R14: ffffffff8dbded10 R15: dffffc0000000000
FS:  00007f8416c8e6c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32763fff CR3: 000000010e924000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x5f/0x360
 trace_call_bpf+0xd4/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock_acquire+0x335/0x410
 lock_acquire+0x311/0x360
 unwind_next_frame+0xc2/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kfree+0x18e/0x440
 ieee80211_inform_bss+0xbd9/0x10a0
 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:__asan_memset+0x0/0x50
Code: 48 8b 0c 24 ba 01 00 00 00 e9 bc e4 ff ff 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 55 41 56 53 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48
RSP: 0018:ffffc90007196ef8 EFLAGS: 00000246
RAX: ffffffff81cb04d5 RBX: 0000000000000001 RCX: ffff888106bf1cc0
RDX: 0000000000000010 RSI: 0000000000000000 RDI: ffffc90007196f80
RBP: ffffc90007196ff8 R08: 0000000000000000 R09: ffffffff81cb03c7
R10: dffffc0000000000 R11: fffff91fe28cb7e9 R12: 0000000000000001
R13: ffffc90007196f80 R14: ffff888109596a00 R15: ffffffff8e008ec8
 trace_call_bpf+0x1db/0x850
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock_acquire+0x335/0x410
 lock_acquire+0x311/0x360
 unwind_next_frame+0xc2/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 __register_sysctl_table+0xba1/0x1340
 nf_log_net_init+0x5cf/0x680
 ops_init+0x35c/0x5c0
 setup_net+0x10c/0x320
 copy_net_ns+0x31b/0x4d0
 create_new_namespaces+0x3f3/0x720
 copy_namespaces+0x438/0x4b0
 copy_process+0x1733/0x3c00
 kernel_clone+0x21e/0x840
 __x64_sys_clone+0x18b/0x1e0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8415d8ebe9
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:00007f8416c8dfe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f8415fb5fa0 RCX: 00007f8415d8ebe9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000e50c1600
RBP: 00007f8415e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f8415fb6038 R14: 00007f8415fb5fa0 R15: 00007fffee2a0e78
 </TASK>
sched: DL replenish lagged too much
