INFO: rcu_preempt self-detected stall on CPU
	1-...: (10499 ticks this GP) idle=77a/140000000000002/0 softirq=10701/10701 fqs=2 
	 (t=10500 jiffies g=1742 c=1741 q=1093)
rcu_preempt kthread starved for 10496 jiffies! g1742 c1741 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt     R  running task    29904     8      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2808 [inline]
 __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x4df/0xe50 kernel/time/timer.c:1746
 rcu_gp_kthread+0xb3d/0x1ce0 kernel/rcu/tree.c:2255
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
NMI backtrace for cpu 1
CPU: 1 PID: 7939 Comm: syz-executor.3 Not tainted 4.14.184-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:17 [inline]
 dump_stack+0x1b2/0x283 lib/dump_stack.c:58
 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline]
 rcu_dump_cpu_stacks+0x16d/0x1b8 kernel/rcu/tree.c:1396
 print_cpu_stall kernel/rcu/tree.c:1542 [inline]
 check_cpu_stall kernel/rcu/tree.c:1610 [inline]
 __rcu_pending kernel/rcu/tree.c:3390 [inline]
 rcu_pending kernel/rcu/tree.c:3452 [inline]
 rcu_check_callbacks.cold+0x490/0xdaa kernel/rcu/tree.c:2792
 update_process_times+0x29/0x60 kernel/time/timer.c:1590
 tick_sched_handle.isra.0+0x73/0x150 kernel/time/tick-sched.c:165
 tick_sched_timer+0x41/0x120 kernel/time/tick-sched.c:1223
 __run_hrtimer kernel/time/hrtimer.c:1223 [inline]
 __hrtimer_run_queues+0x24b/0xb90 kernel/time/hrtimer.c:1287
 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5f0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
RIP: 0010:unwind_next_frame+0xc76/0x1700 arch/x86/kernel/unwind_orc.c:429
RSP: 0018:ffff8880aed07210 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffff8880aed07578 RBX: 1ffff11015da0e49 RCX: ffffffff88d13e26
RDX: ffff8880aed07308 RSI: ffff8880aed07570 RDI: ffff8880aed072c0
RBP: 0000000000000002 R08: ffffffff88d13e2a R09: 0000000000000001
R10: 0000000000020105 R11: 0000000000056071 R12: ffff8880aed072f5
R13: ffff8880aed072f8 R14: ffff8880aed07310 R15: ffff8880aed072c0
 __save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc.part.0+0x4f/0xd0 mm/kasan/kasan.c:551
 kmem_cache_alloc+0x124/0x3c0 mm/slab.c:3552
 skb_clone+0x126/0x320 net/core/skbuff.c:1282
 dev_queue_xmit_nit+0x2ee/0x950 net/core/dev.c:1943
 xmit_one net/core/dev.c:3005 [inline]
 dev_hard_start_xmit+0xa8/0x880 net/core/dev.c:3025
 __dev_queue_xmit+0x1dce/0x25a0 net/core/dev.c:3525
 neigh_resolve_output+0x500/0x8a0 net/core/neighbour.c:1369
 neigh_output include/net/neighbour.h:500 [inline]
 ip6_finish_output2+0x1114/0x21b0 net/ipv6/ip6_output.c:120
 ip6_finish_output+0x702/0xaf0 net/ipv6/ip6_output.c:154
 NF_HOOK_COND include/linux/netfilter.h:239 [inline]
 ip6_output+0x1c5/0x660 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:462 [inline]
 NF_HOOK include/linux/netfilter.h:250 [inline]
 ndisc_send_skb+0x88b/0x1390 net/ipv6/ndisc.c:483
 ndisc_send_rs+0x125/0x630 net/ipv6/ndisc.c:677
 addrconf_rs_timer+0x280/0x5a0 net/ipv6/addrconf.c:3765
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers+0x233/0x4d0 kernel/time/timer.c:1318
 __run_timers kernel/time/timer.c:1636 [inline]
 run_timer_softirq+0x1d8/0x5b0 kernel/time/timer.c:1649
 __do_softirq+0x254/0x9bf kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x15b/0x1a0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5f0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:do_check+0xcf/0x9420 kernel/bpf/verifier.c:4107
RSP: 0018:ffff88809ed6f9c8 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffffc90001952000 RCX: ffffc90007461000
RDX: 1ffff9200032a401 RSI: ffffffff81658007 RDI: ffffc90001952008
RBP: ffff88809ed6fb98 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed1013dadf55 R11: 0000000000000003 R12: 0000000000000000
R13: ffff88808eecbb68 R14: ffff88808eecbb40 R15: dffffc0000000000
 bpf_check+0xaf3/0x1830 kernel/bpf/verifier.c:5047
 bpf_prog_load+0x5e9/0xe00 kernel/bpf/syscall.c:1057
 SYSC_bpf kernel/bpf/syscall.c:1512 [inline]
 SyS_bpf+0x12b2/0x34e0 kernel/bpf/syscall.c:1477
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45cb19
RSP: 002b:00007fbe7ea8fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004db200 RCX: 000000000045cb19
RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000070 R14: 00000000004c3430 R15: 00007fbe7ea906d4
INFO: rcu_sched detected stalls on CPUs/tasks:
	1-...: (10500 ticks this GP) idle=77a/140000000000001/0 softirq=10701/10701 fqs=1 
	(detected by 0, t=10585 jiffies, g=666, c=665, q=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7939 Comm: syz-executor.3 Not tainted 4.14.184-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88809ee86480 task.stack: ffff88809ed68000
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:411 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x264/0x950 kernel/locking/qspinlock.c:465
RSP: 0018:ffff8880aed07d78 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880aed2c100 RCX: fffffbfff0f71378
RDX: 0000000000007d9e RSI: 0000000000000001 RDI: 0000000000000004
RBP: ffffffff87b89bc0 R08: 0000000000000000 R09: ffffffff89e86600
R10: ffff88809ee86d30 R11: ffff88809ee86480 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff87b89bc1 R15: ffffed1015da5828
FS:  00007fbe7ea90700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30927000 CR3: 0000000087f14000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:669 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:52 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:90 [inline]
 do_raw_spin_lock+0x189/0x230 kernel/locking/spinlock_debug.c:113
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:117 [inline]
 _raw_spin_lock_irqsave+0x94/0xc0 kernel/locking/spinlock.c:160
 rcu_report_qs_rdp kernel/rcu/tree.c:2513 [inline]
 rcu_check_quiescent_state kernel/rcu/tree.c:2577 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2913 [inline]
 rcu_process_callbacks+0x1a9/0x1180 kernel/rcu/tree.c:2946
 __do_softirq+0x254/0x9bf kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x15b/0x1a0 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:648 [inline]
 smp_apic_timer_interrupt+0x141/0x5f0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:do_check+0xcf/0x9420 kernel/bpf/verifier.c:4107
RSP: 0018:ffff88809ed6f9c8 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffffc90001952000 RCX: ffffc90007461000
RDX: 1ffff9200032a401 RSI: ffffffff81658007 RDI: ffffc90001952008
RBP: ffff88809ed6fb98 R08: 0000000000000001 R09: 0000000000000001
R10: ffffed1013dadf55 R11: 0000000000000003 R12: 0000000000000000
R13: ffff88808eecbb68 R14: ffff88808eecbb40 R15: dffffc0000000000
 bpf_check+0xaf3/0x1830 kernel/bpf/verifier.c:5047
 bpf_prog_load+0x5e9/0xe00 kernel/bpf/syscall.c:1057
 SYSC_bpf kernel/bpf/syscall.c:1512 [inline]
 SyS_bpf+0x12b2/0x34e0 kernel/bpf/syscall.c:1477
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45cb19
RSP: 002b:00007fbe7ea8fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004db200 RCX: 000000000045cb19
RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000070 R14: 00000000004c3430 R15: 00007fbe7ea906d4
Code: 84 c0 0f 85 69 04 00 00 48 89 e9 49 89 e8 c6 45 01 01 ba 00 80 00 00 48 c1 e9 03 41 83 e0 07 be 01 00 00 00 4c 01 e9 eb 0b f3 90 <83> ea 01 0f 84 6f 04 00 00 0f b6 01 44 38 c0 7f 08 84 c0 0f 85 
rcu_sched kthread starved for 10583 jiffies! g666 c665 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_sched       R  running task    29904     9      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2808 [inline]
 __schedule+0x8a6/0x1d70 kernel/sched/core.c:3384
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x4df/0xe50 kernel/time/timer.c:1746
 rcu_gp_kthread+0xb3d/0x1ce0 kernel/rcu/tree.c:2255
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404