==================================================================
BUG: KMSAN: uninit-value in lock_timer_base kernel/time/timer.c:939 [inline]
BUG: KMSAN: uninit-value in __mod_timer+0x42d/0x2bf0 kernel/time/timer.c:1010
CPU: 0 PID: 788 Comm: kworker/u4:2 Not tainted 4.17.0+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1125
 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620
 lock_timer_base kernel/time/timer.c:939 [inline]
 __mod_timer+0x42d/0x2bf0 kernel/time/timer.c:1010
 mod_timer+0x70/0x80 kernel/time/timer.c:1102
 mrp_join_timer_arm net/802/mrp.c:586 [inline]
 mrp_join_timer+0x375/0x390 net/802/mrp.c:599
 call_timer_fn+0x280/0x5d0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xd96/0x11b0 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x592/0x979 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x202/0x240 kernel/softirq.c:405
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
 smp_apic_timer_interrupt+0x64/0x90 arch/x86/kernel/apic/apic.c:1055
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:866
 </IRQ>
RIP: 0010:rcu_all_qs+0xae/0x1f0 kernel/rcu/tree.c:498
RSP: 0018:ffff8801b044faa8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: ffff8801ad99fa00 RBX: ffffc90001b863d0 RCX: 0000000000000003
RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8801b044fa70
RBP: ffff8801b044fad0 R08: 0000000001080020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff88204930 R12: 0000000000000000
R13: ffff880088692000 R14: ffff8801d8804358 R15: 0000000000000000
 cond_resched_rcu include/linux/sched.h:1700 [inline]
 ip_vs_conn_flush net/netfilter/ipvs/ip_vs_conn.c:1365 [inline]
 ip_vs_conn_net_cleanup+0x6f8/0x8b0 net/netfilter/ipvs/ip_vs_conn.c:1392
 __ip_vs_cleanup+0xb1/0x150 net/netfilter/ipvs/ip_vs_core.c:2280
 ops_exit_list net/core/net_namespace.c:152 [inline]
 cleanup_net+0xa2e/0x16b0 net/core/net_namespace.c:523
 process_one_work+0x12e4/0x1fa0 kernel/workqueue.c:2145
 worker_thread+0x113c/0x24f0 kernel/workqueue.c:2279
 kthread+0x4db/0x6c0 kernel/kthread.c:241
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:413

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:282 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:297 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:689
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464
 timer_set_idx kernel/time/timer.c:480 [inline]
 enqueue_timer kernel/time/timer.c:539 [inline]
 __internal_add_timer kernel/time/timer.c:548 [inline]
 internal_add_timer kernel/time/timer.c:590 [inline]
 __mod_timer+0x22a1/0x2bf0 kernel/time/timer.c:1055
 mod_timer+0x70/0x80 kernel/time/timer.c:1102
 mrp_join_timer_arm net/802/mrp.c:586 [inline]
 mrp_join_timer+0x375/0x390 net/802/mrp.c:599
 call_timer_fn+0x280/0x5d0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xd96/0x11b0 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x592/0x979 kernel/softirq.c:285

Local variable description: ----flags.i.i.i.i@_raw_spin_lock_irqsave
Variable was created at:
 _raw_spin_lock_irqsave+0x45/0xf0 kernel/locking/spinlock.c:150
 skb_dequeue+0x53/0x350 net/core/skbuff.c:2804
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