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BUG: KCSAN: data-race in icmp_global_allow / icmp_global_allow

write to 0xffffffff861a8014 of 4 bytes by interrupt on cpu 1:
 icmp_global_allow+0x174/0x1b0 net/ipv4/icmp.c:272
 icmpv6_global_allow net/ipv6/icmp.c:184 [inline]
 icmpv6_global_allow net/ipv6/icmp.c:179 [inline]
 icmp6_send+0x493/0x1140 net/ipv6/icmp.c:514
 icmpv6_send+0x71/0xb0 net/ipv6/ip6_icmp.c:43
 ip6_link_failure+0x43/0x180 net/ipv6/route.c:2640
 dst_link_failure include/net/dst.h:419 [inline]
 ndisc_error_report+0x72/0x90 net/ipv6/ndisc.c:709
 neigh_invalidate+0x185/0x2b0 net/core/neighbour.c:996
 neigh_timer_handler+0x7cb/0x870 net/core/neighbour.c:1082
 call_timer_fn+0x5f/0x2f0 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0xcb8/0xd20 kernel/time/timer.c:1786
 __do_softirq+0x115/0x33f kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0xbb/0xe0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
 __sanitizer_cov_trace_switch+0x2c/0x80 kernel/kcov.c:208

read to 0xffffffff861a8014 of 4 bytes by interrupt on cpu 0:
 icmp_global_allow+0x36/0x1b0 net/ipv4/icmp.c:254
 icmpv4_global_allow net/ipv4/icmp.c:299 [inline]
 icmpv4_global_allow+0x83/0xc0 net/ipv4/icmp.c:294
 __icmp_send+0x925/0xaa0 net/ipv4/icmp.c:664
 ipv4_send_dest_unreach net/ipv4/route.c:1220 [inline]
 ipv4_link_failure+0x22d/0x400 net/ipv4/route.c:1227
 dst_link_failure include/net/dst.h:419 [inline]
 arp_error_report+0x72/0x90 net/ipv4/arp.c:293
 neigh_invalidate+0x185/0x2b0 net/core/neighbour.c:996
 neigh_timer_handler+0x7cb/0x870 net/core/neighbour.c:1082
 call_timer_fn+0x5f/0x2f0 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0xcb8/0xd20 kernel/time/timer.c:1786
 __do_softirq+0x115/0x33f kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0xbb/0xe0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0xe6/0x280 arch/x86/kernel/apic/apic.c:1137
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 15089 Comm: kworker/0:1 Not tainted 5.4.0-rc3+ #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: rcu_gp process_srcu
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