INFO: rcu_preempt self-detected stall on CPU
	0-...: (1 GPs behind) idle=d46/140000000000002/0 softirq=77054/77072 fqs=39 
	 (t=10500 jiffies g=23329 c=23328 q=1792)
rcu_preempt kthread starved for 9763 jiffies! g23329 c23328 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_preempt     R  running task    29920     8      2 0x80000000
Call Trace:
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
 rcu_gp_kthread+0xb8e/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 0
CPU: 0 PID: 32279 Comm: syz-executor.3 Not tainted 4.14.172-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+0x13e/0x194 lib/dump_stack.c:58
 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x139/0x17e 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+0x7d/0x150 kernel/time/tick-sched.c:165
 tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223
 __run_hrtimer kernel/time/hrtimer.c:1223 [inline]
 __hrtimer_run_queues+0x25c/0xbb0 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+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:memcmp+0x28/0xb0 lib/string.c:860
RSP: 0018:ffff8880aea07538 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffff8880aea075ea RCX: 0000000000000001
RDX: 0000000000000023 RSI: ffff888055c472a2 RDI: ffff8880aea075d0
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003
R10: ffff8882105daa78 R11: ffff8882105da180 R12: ffff8880aea07640
R13: 000000000000000e R14: ffff8880aea075d0 R15: ffff888055c47270
 find_stack lib/stackdepot.c:180 [inline]
 depot_save_stack+0x10d/0x401 lib/stackdepot.c:229
 save_stack+0x89/0xa0 mm/kasan/kasan.c:453
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc mm/kasan/kasan.c:551 [inline]
 kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529
 kmem_cache_alloc_node+0x148/0x7a0 mm/slab.c:3642
 __alloc_skb+0x9a/0x4c0 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:980 [inline]
 _sctp_make_chunk+0x44/0x250 net/sctp/sm_make_chunk.c:1388
 sctp_make_control+0x30/0x150 net/sctp/sm_make_chunk.c:1429
 sctp_make_heartbeat+0x79/0x240 net/sctp/sm_make_chunk.c:1148
 sctp_sf_heartbeat.isra.0+0x21/0x170 net/sctp/sm_statefuns.c:971
 sctp_sf_sendbeat_8_3+0x34e/0x4f0 net/sctp/sm_statefuns.c:1015
 sctp_do_sm+0xf6/0x4a90 net/sctp/sm_sideeffect.c:1147
 sctp_generate_heartbeat_event+0x1da/0x3f0 net/sctp/sm_sideeffect.c:391
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1636 [inline]
 __run_timers kernel/time/timer.c:1604 [inline]
 run_timer_softirq+0x52a/0x1390 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+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:acct_collect+0x157/0x7c0 kernel/acct.c:545
RSP: 0018:ffff88821558fb08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffff88808ec19880 RBX: ffff8880a9b58e00 RCX: 000000004cd943e4
RDX: 0000000000000000 RSI: ffff8882105daa00 RDI: ffff88808ec19888
RBP: ffff88808ec19880 R08: 0000000000001a48 R09: ffffffff8a068b00
R10: ffff8882105daa00 R11: ffff8882105da180 R12: 00007f2d0d061000
R13: 0000000002772000 R14: 0000000000000009 R15: dffffc0000000000
 do_exit+0x49e/0x2b00 kernel/exit.c:837
 do_group_exit+0x100/0x310 kernel/exit.c:955
 get_signal+0x385/0x1ca0 kernel/signal.c:2418
 do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160
 prepare_exit_to_usermode+0x1af/0x210 arch/x86/entry/common.c:199
 retint_user+0x8/0x18
RIP: 0033:0x45c4a9
RSP: 002b:00007f2d0cddbc78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 00007f2d0cddc6d4 RCX: 000000000045c4a9
RDX: 0000000000002000 RSI: 0000000000000004 RDI: 0000000000000009
RBP: 000000000076c1a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000000c5 R14: 00000000004c316e R15: 000000000076c1ac
INFO: rcu_sched detected stalls on CPUs/tasks:
	0-...: (1 GPs behind) idle=d46/140000000000002/0 softirq=77054/77072 fqs=39 
	(detected by 1, t=10580 jiffies, g=18824, c=18823, q=11)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 32279 Comm: syz-executor.3 Not tainted 4.14.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8882105da180 task.stack: ffff888215588000
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:142 [inline]
RIP: 0010:native_write_msr+0x6/0x20 arch/x86/include/asm/msr.h:150
RSP: 0018:ffff8880aea07228 EFLAGS: 00000046
RAX: 000000000000003e RBX: 0000000000000838 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000000003e RDI: 0000000000000838
RBP: ffff8880aea1f140 R08: 000000a72af9e19e R09: ffff88821fff7008
R10: ffff88821fff7010 R11: 0000000000000001 R12: 000000000000003e
R13: 0000000000000003 R14: 000000a55e82bc03 R15: 000000a55e82bc03
FS:  00007f2d0cddc700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000009f950000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 paravirt_write_msr arch/x86/include/asm/paravirt.h:117 [inline]
 native_apic_msr_write arch/x86/include/asm/apic.h:193 [inline]
 native_apic_msr_write+0x54/0x80 arch/x86/include/asm/apic.h:187
 apic_write arch/x86/include/asm/apic.h:395 [inline]
 lapic_next_event+0x53/0x80 arch/x86/kernel/apic/apic.c:469
 clockevents_program_event+0x1fa/0x2e0 kernel/time/clockevents.c:339
 tick_program_event+0x80/0xd0 kernel/time/tick-oneshot.c:47
 hrtimer_interrupt+0x336/0x5e0 kernel/time/hrtimer.c:1334
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:60
RSP: 0018:ffff8880aea07430 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff888088421b80
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888088421d00
RBP: ffff888055cace84 R08: 0000000000000001 R09: ffff8880aea07468
R10: ffff8882105daac8 R11: ffff8882105da180 R12: ffff888088421cb0
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 ipt_do_table+0x792/0x16d0 net/ipv4/netfilter/ip_tables.c:291
 iptable_filter_hook+0x176/0x1e0 net/ipv4/netfilter/iptable_filter.c:47
 nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline]
 nf_hook_slow+0xa5/0x1a0 net/netfilter/core.c:467
 nf_hook include/linux/netfilter.h:205 [inline]
 __ip_local_out+0x358/0x730 net/ipv4/ip_output.c:113
 ip_local_out+0x25/0x170 net/ipv4/ip_output.c:122
 ip_queue_xmit+0x7b2/0x1b20 net/ipv4/ip_output.c:504
 sctp_packet_transmit+0x17f7/0x2d70 net/sctp/output.c:637
 sctp_outq_flush+0xc54/0x2dd0 net/sctp/outqueue.c:1187
 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1787 [inline]
 sctp_side_effects net/sctp/sm_sideeffect.c:1179 [inline]
 sctp_do_sm+0x419/0x4a90 net/sctp/sm_sideeffect.c:1150
 sctp_generate_heartbeat_event+0x1da/0x3f0 net/sctp/sm_sideeffect.c:391
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1636 [inline]
 __run_timers kernel/time/timer.c:1604 [inline]
 run_timer_softirq+0x52a/0x1390 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+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102
 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792
 </IRQ>
RIP: 0010:acct_collect+0x157/0x7c0 kernel/acct.c:545
RSP: 0018:ffff88821558fb08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: ffff88808ec19880 RBX: ffff8880a9b58e00 RCX: 000000004cd943e4
RDX: 0000000000000000 RSI: ffff8882105daa00 RDI: ffff88808ec19888
RBP: ffff88808ec19880 R08: 0000000000001a48 R09: ffffffff8a068b00
R10: ffff8882105daa00 R11: ffff8882105da180 R12: 00007f2d0d061000
R13: 0000000002772000 R14: 0000000000000009 R15: dffffc0000000000
 do_exit+0x49e/0x2b00 kernel/exit.c:837
 do_group_exit+0x100/0x310 kernel/exit.c:955
 get_signal+0x385/0x1ca0 kernel/signal.c:2418
 do_signal+0x7c/0x1690 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x159/0x220 arch/x86/entry/common.c:160
 prepare_exit_to_usermode+0x1af/0x210 arch/x86/entry/common.c:199
 retint_user+0x8/0x18
RIP: 0033:0x45c4a9
RSP: 002b:00007f2d0cddbc78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 00007f2d0cddc6d4 RCX: 000000000045c4a9
RDX: 0000000000002000 RSI: 0000000000000004 RDI: 0000000000000009
RBP: 000000000076c1a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000000c5 R14: 00000000004c316e R15: 000000000076c1ac
Code: df a7 86 0f 21 f8 c3 0f 21 c0 c3 0f 21 c8 c3 0f 21 d0 c3 0f 21 d8 c3 0f 21 f0 c3 0f 0b 0f 1f 84 00 00 00 00 00 89 f9 89 f0 0f 30 <0f> 1f 44 00 00 c3 48 c1 e2 20 89 f6 48 09 d6 31 d2 e9 24 fc e5 
rcu_sched kthread starved for 9844 jiffies! g18824 c18823 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1
rcu_sched       R  running task    29920     9      2 0x80000000
Call Trace:
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746
 rcu_gp_kthread+0xb8e/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