rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=6f6/1/0x4000000000000000 softirq=11278/11280 fqs=0 
	(t=10500 jiffies g=11365 q=1013)
rcu: rcu_preempt kthread starved for 10500 jiffies! g11365 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:29176 pid:   13 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4327 [inline]
 __schedule+0x90c/0x21a0 kernel/sched/core.c:5078
 schedule+0xcf/0x270 kernel/sched/core.c:5157
 schedule_timeout+0x148/0x250 kernel/time/timer.c:1878
 rcu_gp_fqs_loop kernel/rcu/tree.c:1940 [inline]
 rcu_gp_kthread+0xbbe/0x1d70 kernel/rcu/tree.c:2113
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10138 Comm: syz-executor.0 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:110
Code: c7 a0 9a 13 8f e8 28 a1 84 00 eb b0 66 0f 1f 44 00 00 be 01 00 00 00 e9 66 71 2c 00 cc cc cc cc cc cc 89 ff 89 b7 00 c0 5f ff <c3> 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48
RSP: 0018:ffffc90000007730 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffffffff8ae6f8a0 RCX: 0000000000000020
RDX: 1ffffffff15cdf16 RSI: 0000000000000167 RDI: 0000000000000380
RBP: ffff8880b9c1fa00 R08: 000000000000003f R09: 0000000000000000
R10: ffffffff8165ca17 R11: 0000000000000000 R12: 0000000000000167
R13: 0000000000000020 R14: 0000000000000000 R15: ffff8880b9c26a00
FS:  00007f705754b700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ffffd40 CR3: 00000000170bc000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 apic_write arch/x86/include/asm/apic.h:393 [inline]
 lapic_next_event+0x4d/0x80 arch/x86/kernel/apic/apic.c:472
 clockevents_program_event+0x254/0x370 kernel/time/clockevents.c:334
 tick_program_event+0xac/0x140 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0x4a5/0x940 kernel/time/hrtimer.c:1658
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
 sysvec_apic_timer_interrupt+0x48/0x100 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629
RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1161 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x5c/0x150 kernel/rcu/tree.c:1152
Code: 03 00 83 f8 07 89 c5 0f 87 f5 00 00 00 48 8d 3c ed c0 f6 e6 8a 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 ad 00 00 00 48 03 1c ed c0 f6 e6 8a 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000007950 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000035a80 RCX: ffffffff8158ce61
RDX: 1ffffffff15cded8 RSI: 0000000000000304 RDI: ffffffff8ae6f6c0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8da38acf
R10: fffffbfff1b47159 R11: 0000000000000000 R12: 0000000000000001
R13: ffffc90000007b70 R14: ffff888070f38000 R15: ffff8880b9c36100
 rcu_read_lock_held_common kernel/rcu/update.c:110 [inline]
 rcu_read_lock_held_common kernel/rcu/update.c:100 [inline]
 rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:121
 trace_lock_release include/trace/events/lock.h:58 [inline]
 lock_release+0x5b7/0x710 kernel/locking/lockdep.c:5453
 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:174 [inline]
 _raw_spin_unlock_bh+0x12/0x30 kernel/locking/spinlock.c:207
 spin_unlock_bh include/linux/spinlock.h:399 [inline]
 rt6_uncached_list_add net/ipv6/route.c:142 [inline]
 icmp6_dst_alloc+0x43b/0x6c0 net/ipv6/route.c:3185
 ndisc_send_skb+0x122e/0x1750 net/ipv6/ndisc.c:488
 ndisc_send_rs+0x12e/0x700 net/ipv6/ndisc.c:702
 addrconf_rs_timer+0x3f2/0x820 net/ipv6/addrconf.c:3875
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1417
 expire_timers kernel/time/timer.c:1462 [inline]
 __run_timers.part.0+0x67c/0xa50 kernel/time/timer.c:1731
 __run_timers kernel/time/timer.c:1712 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1744
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:226 [inline]
 __irq_exit_rcu kernel/softirq.c:420 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:432
 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:5340
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 b2 82 51 f8 e8 9d 8f 7c f8 fb bf 01 00 00 00 <e8> 02 d1 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 c0 70 51
RSP: 0018:ffffc9000103fad8 EFLAGS: 00000202
RAX: 0000000000008657 RBX: ffff88801c455340 RCX: 1ffffffff1b46a19
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed100388aa68 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8178a8b8 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 irqentry_exit_cond_resched kernel/entry/common.c:385 [inline]
 irqentry_exit_cond_resched kernel/entry/common.c:377 [inline]
 irqentry_exit+0x7a/0xa0 kernel/entry/common.c:415
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629
RIP: 0010:strcmp+0x69/0xb0 lib/string.c:386
Code: c0 75 50 0f b6 6b ff 4c 8d 66 01 48 89 f0 48 89 f2 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 24 41 3a 6c 24 ff <74> ae 19 c0 48 83 c4 08 5b 83 c8 01 5d 41 5c 41 5d c3 48 83 c4 08
RSP: 0018:ffffc9000103fba0 EFLAGS: 00000246
RAX: 0000000000000004 RBX: ffffc9000103fc71 RCX: ffffc90002151000
RDX: 0000000000000000 RSI: ffffffff8951fcc0 RDI: ffffc9000103fc70
RBP: 0000000000000047 R08: 0000000000000000 R09: ffffffff81be758b
R10: ffffffff81804797 R11: 0000000000000002 R12: ffffffff8951fcc1
R13: dffffc0000000000 R14: ffffc9000103fe50 R15: 0000000000000005
 license_is_gpl_compatible include/linux/license.h:7 [inline]
 bpf_prog_load+0x17c/0x1f40 kernel/bpf/syscall.c:2097
 __do_sys_bpf+0x1251/0x4f10 kernel/bpf/syscall.c:4382
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465d99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f705754b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465d99
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffef95939df R14: 00007f705754b300 R15: 0000000000022000
NMI backtrace for cpu 1
CPU: 1 PID: 10131 Comm: syz-executor.5 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x1f4/0x230 kernel/rcu/tree_stall.h:337
 print_cpu_stall kernel/rcu/tree_stall.h:569 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:643 [inline]
 rcu_pending kernel/rcu/tree.c:3751 [inline]
 rcu_sched_clock_irq.cold+0x48e/0xedf kernel/rcu/tree.c:2580
 update_process_times+0x16d/0x200 kernel/time/timer.c:1782
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1369
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1583
 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:91 [inline]
 sysvec_apic_timer_interrupt+0x48/0x100 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629
RIP: 0010:__slab_alloc.constprop.0+0x55/0xe0 mm/slub.c:2784
Code: 11 5b 45 07 83 f8 07 89 c2 77 6e 48 03 1c d5 c0 f6 e6 8a 4c 89 f9 44 89 f2 44 89 ee 48 89 ef 49 89 d8 e8 ce f3 ff ff 41 54 9d <48> 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 47 5d c3 ff 48 8b
RSP: 0018:ffffc90000db0aa8 EFLAGS: 00000292
RAX: ffff88802dcfa800 RBX: ffff8880b9d38590 RCX: ffffffff81585217
RDX: 0000000000000000 RSI: 0000000000000102 RDI: 0000000000000000
RBP: ffff888010c41280 R08: 0000000000000001 R09: ffffffff8f866807
R10: fffffbfff1f0cd00 R11: 0000000000000000 R12: 0000000000000292
R13: 0000000000082a20 R14: 00000000ffffffff R15: ffffffff86f1e297
 slab_alloc_node mm/slub.c:2857 [inline]
 __kmalloc_node_track_caller+0x1ad/0x3f0 mm/slub.c:4510
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xae/0x5a0 net/core/skbuff.c:210
 skb_copy+0x137/0x2f0 net/core/skbuff.c:1523
 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb17/0x1330 drivers/net/wireless/mac80211_hwsim.c:1493
 mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1705
 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1759
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1782
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1583
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1600
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:343
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
 invoke_softirq kernel/softirq.c:226 [inline]
 __irq_exit_rcu kernel/softirq.c:420 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:432
 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:5340
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 b2 82 51 f8 e8 9d 8f 7c f8 fb bf 01 00 00 00 <e8> 02 d1 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 c0 70 51
RSP: 0018:ffffc9001737f9e8 EFLAGS: 00000206
RAX: 0000000000021099 RBX: ffff8880199eb780 RCX: 1ffffffff1b46a19
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed100333d6f0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8178a8b8 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 irqentry_exit_cond_resched kernel/entry/common.c:385 [inline]
 irqentry_exit_cond_resched kernel/entry/common.c:377 [inline]
 irqentry_exit+0x7a/0xa0 kernel/entry/common.c:415
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:629
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x60 kernel/kcov.c:197
Code: 81 e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 cc 14 00 00 85 c0 74 2b 8b 82 a8 14 00 00 <83> f8 02 75 20 48 8b 8a b0 14 00 00 8b 92 ac 14 00 00 48 8b 01 48
RSP: 0018:ffffc9001737fab8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000022 RCX: 0000000000000000
RDX: ffff8880199eb780 RSI: ffffffff81ab3d62 RDI: 0000000000000003
RBP: 0000000000001000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81ab3b79 R11: 0000000000000000 R12: ffff88801b7da300
R13: 0000000000000001 R14: 0000000000001000 R15: 00000000ffffffff
 __get_vm_area_node+0x2e2/0x380 mm/vmalloc.c:2094
 __vmalloc_node_range mm/vmalloc.c:2571 [inline]
 __vmalloc_node mm/vmalloc.c:2619 [inline]
 __vmalloc+0xf3/0x1a0 mm/vmalloc.c:2633
 bpf_prog_alloc_no_stats+0x33/0x2e0 kernel/bpf/core.c:85
 bpf_prog_alloc+0x2c/0x250 kernel/bpf/core.c:113
 bpf_prog_load+0x656/0x1f40 kernel/bpf/syscall.c:2152
 __do_sys_bpf+0x1251/0x4f10 kernel/bpf/syscall.c:4382
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x465d99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4fb1cbf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000465d99
RDX: 0000000000000048 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0b0
R13: 00007ffd67d8510f R14: 00007f4fb1cbf300 R15: 0000000000022000