rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10425 ticks this GP) idle=d9ac/1/0x4000000000000000 softirq=15903/15903 fqs=4232
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   853149          0            0
rcu: 	cputime:    35095      17393           61   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=8445 q=3102 ncpus=2)
CPU: 0 UID: 0 PID: 6076 Comm: syz.0.49 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:in_task_stack+0x39/0x40
Code: 48 39 cf 41 0f 93 c0 48 39 f7 0f 92 c0 44 20 c0 3c 01 75 16 c7 02 01 00 00 00 48 89 4a 08 48 89 72 10 48 c7 42 18 00 00 00 00 <e9> d2 11 03 00 cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900000068a0 EFLAGS: 00000297
RAX: 1ffff92000000d00 RBX: ffffc90000006988 RCX: ffffc90006108000
RDX: ffffc90000006968 RSI: ffffc90006110000 RDI: ffffc90000006908
RBP: ffffc90000006901 R08: ffffc90000006900 R09: 0000000000000000
R10: ffffc90000006968 R11: fffff52000000d39 R12: ffff8880266a5640
R13: ffffc90000006988 R14: ffffc90000006968 R15: ffffc90000006908
FS:  00007fe4d0a186c0(0000) GS:ffff8880b861c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32420ff8 CR3: 0000000110ee6000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 get_stack_info_noinstr+0x1b/0x130
 get_stack_info+0x3b/0xf0
 __unwind_start+0x43f/0x760
 arch_stack_walk+0xe4/0x150
 stack_trace_save+0x9c/0xe0
 save_stack+0xf5/0x1f0
 __set_page_owner+0x8d/0x4a0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x8a/0x370
 ___slab_alloc+0xbeb/0x1410
 __kmalloc_noprof+0x305/0x4f0
 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:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 2f b7 ea 09 e8 5a 3f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000610f6b8 EFLAGS: 00000286
RAX: 08431aa2951d8100 RBX: 0000000000000000 RCX: 08431aa2951d8100
RDX: 0000000000000000 RSI: ffffffff8d9b6a0a RDI: ffffffff8be33300
RBP: ffffc9000610f710 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff8880266a5640
R13: dffffc0000000000 R14: ffff88801ca81cc0 R15: ffff88804b03ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:seccomp_filter_release+0x6d/0x120
Code: 99 a3 ff ff 83 e5 04 0f 84 a3 00 00 00 4c 8d b3 98 09 00 00 4d 89 f7 49 c1 ef 03 43 80 3c 27 00 74 08 4c 89 f7 e8 c3 13 63 00 <49> 83 3e 00 74 6b e8 28 9f ff ff 48 81 c3 28 09 00 00 49 89 dd 49
RSP: 0018:ffffc9000610faa8 EFLAGS: 00000246
RAX: ffffffff81c00cf7 RBX: ffff8880266a5640 RCX: 0000000000000000
RDX: ffff8880266a5640 RSI: 0000000000000004 RDI: 0000000000000000
RBP: 0000000000000004 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: dffffc0000000000
R13: 0000000000000b00 R14: ffff8880266a5fd8 R15: 1ffff11004cd4bfb
 do_exit+0x35a/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 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: 0033:0x7fe4cfb8ebe9
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:00007fe4d0a18038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000006 RBX: 00007fe4cfdb5fa0 RCX: 00007fe4cfb8ebe9
RDX: 0000000000000084 RSI: 0000000000000003 RDI: 0000000000000002
RBP: 00007fe4cfc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe4cfdb6038 R14: 00007fe4cfdb5fa0 R15: 00007fff1d728108
 </TASK>
