x_tables: eb_tables: CLASSIFY target: used from hooks INPUT, but only usable from FORWARD/OUTPUT/POSTROUTING
xt_connbytes: cannot load conntrack support for proto=7
x_tables: eb_tables: CLASSIFY target: used from hooks INPUT, but only usable from FORWARD/OUTPUT/POSTROUTING
INFO: rcu_sched self-detected stall on CPU
	1-...!: (1 GPs behind) idle=7f2/1/4611686018427387906 softirq=25894/25895 fqs=179 
	 (t=120000 jiffies g=14459 c=14458 q=649)
rcu_sched kthread starved for 119233 jiffies! g14459 c14458 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=0
RCU grace-period kthread stack dump:
rcu_sched       I61952     9      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2852 [inline]
 __schedule+0x66e/0x730 kernel/sched/core.c:3496
 schedule+0x1cc/0x2f0 kernel/sched/core.c:3555
 schedule_timeout+0x3e7/0x570 kernel/time/timer.c:1801
 rcu_gp_kthread+0x21e1/0x38d0 kernel/rcu/tree.c:2231
 kthread+0x539/0x720 kernel/kthread.c:239
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:412
NMI backtrace for cpu 1
CPU: 1 PID: 6841 Comm: syz-executor6 Not tainted 4.17.0-rc3+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 nmi_cpu_backtrace lib/nmi_backtrace.c:103 [inline]
 nmi_trigger_cpumask_backtrace+0x262/0x4b0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x2c/0x40 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:156 [inline]
 rcu_dump_cpu_stacks+0x307/0x4b0 kernel/rcu/tree.c:1376
 print_cpu_stall kernel/rcu/tree.c:1525 [inline]
 check_cpu_stall kernel/rcu/tree.c:1593 [inline]
 __rcu_pending kernel/rcu/tree.c:3356 [inline]
 rcu_pending kernel/rcu/tree.c:3401 [inline]
 rcu_check_callbacks+0x1924/0x2a00 kernel/rcu/tree.c:2763
 update_process_times+0x132/0x1a0 kernel/time/timer.c:1636
 tick_sched_handle kernel/time/tick-sched.c:164 [inline]
 tick_sched_timer+0x3ba/0x520 kernel/time/tick-sched.c:1274
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0xc03/0x15d0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x451/0x13c0 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt+0x66/0x230 arch/x86/kernel/apic/apic.c:1025
 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1053
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
 </IRQ>
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:78 [inline]
RIP: 0010:__msan_warning_32+0x82/0xb0 mm/kmsan/kmsan_instr.c:684
RSP: 0018:ffff88014017ee28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffff880142c357c0 RCX: 0000000000000000
RDX: ffffffff8b588000 RSI: 0000000000000001 RDI: ffffffff8b577824
RBP: ffff88014017ee50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001770 R11: ffff880140170000 R12: 000000000000fdb1
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000246
 pskb_may_pull include/linux/skbuff.h:2112 [inline]
 _decode_session6+0x7db/0x16e0 net/ipv6/xfrm6_policy.c:152
 __xfrm_decode_session+0x151/0x200 net/xfrm/xfrm_policy.c:2368
 xfrm_decode_session_reverse include/net/xfrm.h:1213 [inline]
 icmpv6_route_lookup net/ipv6/icmp.c:372 [inline]
 icmp6_send+0x2c21/0x3760 net/ipv6/icmp.c:551
 icmpv6_send+0xe0/0x110 net/ipv6/ip6_icmp.c:43
 ip6_input_finish+0x216d/0x2250 net/ipv6/ip6_input.c:305
 NF_HOOK include/linux/netfilter.h:288 [inline]
 ip6_input+0x294/0x320 net/ipv6/ip6_input.c:327
 dst_input include/net/dst.h:450 [inline]
 ip6_rcv_finish+0x46e/0x6e0 net/ipv6/ip6_input.c:71
 NF_HOOK include/linux/netfilter.h:288 [inline]
 ipv6_rcv+0x1e16/0x2340 net/ipv6/ip6_input.c:208
 __netif_receive_skb_core+0x47df/0x4a90 net/core/dev.c:4592
 __netif_receive_skb net/core/dev.c:4657 [inline]
 netif_receive_skb_internal+0x49d/0x630 net/core/dev.c:4731
 netif_receive_skb+0x230/0x240 net/core/dev.c:4755
 tun_rx_batched drivers/net/tun.c:1558 [inline]
 tun_get_user+0x6b67/0x7e40 drivers/net/tun.c:1962
 tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:1990
 do_iter_readv_writev+0x84d/0xa00 include/linux/fs.h:1778
 do_iter_write+0x30d/0xd40 fs/read_write.c:959
 vfs_writev fs/read_write.c:1004 [inline]
 do_writev+0x3c9/0x830 fs/read_write.c:1039
 __do_sys_writev fs/read_write.c:1112 [inline]
 __se_sys_writev fs/read_write.c:1109 [inline]
 __x64_sys_writev+0xe1/0x120 fs/read_write.c:1109
 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455831
RSP: 002b:00007ff2b6f28ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000000fdef RCX: 0000000000455831
RDX: 0000000000000001 RSI: 00007ff2b6f28bf0 RDI: 00000000000000fc
RBP: 00000000200001c0 R08: 00000000000000fc R09: 0000000000000000
R10: 000000000000fdef R11: 0000000000000293 R12: 00000000ffffffff
R13: 00000000000006ad R14: 00000000006fe0d8 R15: 0000000000000000