rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10477 ticks this GP) idle=c3bc/1/0x4000000000000000 softirq=54739/55646 fqs=5232
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1179003       1626            0
rcu: 	cputime:    31714      20777           48   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=42193 q=1173 ncpus=2)
CPU: 0 UID: 0 PID: 12035 Comm: syz.0.1558 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:page_ext_lookup+0xd5/0x180
Code: 83 e3 7f c1 e3 05 49 01 de eb 0f e8 a5 62 91 ff eb 05 e8 9e 62 91 ff 45 31 f6 49 83 c6 10 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 <74> 08 4c 89 f7 e8 a1 e3 f4 ff 49 8b 1e e8 09 e5 76 ff 89 c5 31 ff
RSP: 0018:ffffc90000007168 EFLAGS: 00000246
RAX: 1ffff1100bfff49e RBX: 00000000000000e0 RCX: ffff888022c3d640
RDX: 0000000000000100 RSI: 0000000000001000 RDI: 0000000000000000
RBP: ffffc900000072e8 R08: 0000000000000000 R09: ffffffff822cac1a
R10: ffff888022c3df00 R11: ffffffff81ac4d00 R12: 000000000003d600
R13: dffffc0000000000 R14: ffff88805fffa4f0 R15: 0000000000001000
FS:  00007f5016ff36c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2bb9c5c866 CR3: 0000000034378000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __update_page_owner_handle+0x12f/0x570
 __set_page_owner+0x10b/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/0x1420
 kmem_cache_alloc_node_noprof+0x280/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 skb_copy+0x188/0x800
 mac80211_hwsim_tx_frame_no_nl+0xcd3/0x11c0
 mac80211_hwsim_tx_frame+0x1b5/0x200
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 2b 7c 4a f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e3 20 13 f6 65 8b 05 6c e1 23 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900045cf340 EFLAGS: 00000206
RAX: 6f82e96d8e896b00 RBX: 0000000000000a02 RCX: 6f82e96d8e896b00
RDX: 0000000000000007 RSI: ffffffff8d9ba191 RDI: 0000000000000001
RBP: ffffc900045cf3d8 R08: ffffffff8fa3a937 R09: 1ffffffff1f47526
R10: dffffc0000000000 R11: fffffbfff1f47527 R12: dffffc0000000000
R13: 0000000000000004 R14: ffffffff8e8dc220 R15: 1ffff920008b9e68
 percpu_counter_destroy_many+0x223/0x3e0
 __mmdrop+0x31b/0x570
 finish_task_switch+0x3ee/0x950
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:mas_start+0x2bc/0x560
Code: 00 00 00 48 8b 04 24 c6 00 00 49 81 e4 00 ff ff ff 4c 89 e0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 e7 e8 88 ce b1 f6 49 8b 04 24 <48> c7 c1 00 ff ff ff 48 21 c8 49 39 c4 0f 85 fd 00 00 00 e8 4c 4d
RSP: 0018:ffffc900045cf888 EFLAGS: 00000246
RAX: ffff88801ec16bc1 RBX: ffffc900045cfa00 RCX: ffff888022c3d640
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: dffffc0000000000 R08: ffff888022c3d640 R09: 0000000000000006
R10: 0000000000000007 R11: 0000000000000000 R12: ffff88802ab2d000
R13: ffffc900045cfa18 R14: 0000000000000002 R15: ffffc900045cfa38
 mas_find+0x8aa/0xd30
 acct_collect+0x18c/0x770
 do_exit+0x5c3/0x2300
 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: 0033:0x7f501618eba9
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:00007f5016ff3038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000004 RBX: 00007f50163d6090 RCX: 00007f501618eba9
RDX: 7fffffffffffffff RSI: 0000000000000000 RDI: 0000200000000440
RBP: 00007f5016211e19 R08: 0000000000000003 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f50163d6128 R14: 00007f50163d6090 R15: 00007ffe9ee3d718
 </TASK>
sched: DL replenish lagged too much
