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BUG: KMSAN: uninit-value in __hlist_del include/linux/list.h:763 [inline]
BUG: KMSAN: uninit-value in detach_timer kernel/time/timer.c:815 [inline]
BUG: KMSAN: uninit-value in expire_timers kernel/time/timer.c:1438 [inline]
BUG: KMSAN: uninit-value in __run_timers+0xc19/0x1270 kernel/time/timer.c:1773
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc5+ #0
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+0x191/0x1f0 lib/dump_stack.c:113
 kmsan_report+0x128/0x220 mm/kmsan/kmsan_report.c:108
 __msan_warning+0x73/0xe0 mm/kmsan/kmsan_instr.c:245
 __hlist_del include/linux/list.h:763 [inline]
 detach_timer kernel/time/timer.c:815 [inline]
 expire_timers kernel/time/timer.c:1438 [inline]
 __run_timers+0xc19/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536
 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1139
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:837
 </IRQ>
RIP: 0010:default_idle+0x53/0x90 arch/x86/kernel/process.c:581
Code: f3 14 ec f2 44 8b 35 44 74 cf 01 48 c7 c7 88 e5 23 90 e8 b0 95 b2 f3 83 38 00 75 31 45 85 f6 7e 07 0f 00 2d e7 ed 4c 00 fb f4 <65> 8b 35 ce 41 ae 71 c7 03 00 00 00 00 c7 43 08 00 00 00 00 bf ff
RSP: 0018:ffffffff8f60fda0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: ffff888217c37588 RBX: ffffffff8f638b68 RCX: ccccccccccccd000
RDX: ffff888207e30588 RSI: ffffea000a76d130 RDI: 000000001023e588
RBP: ffffffff8f60fdb0 R08: ffff88812fc30fc0 R09: ffff88821f4a21c2
R10: 00000026423c3800 R11: ffffffff8e547110 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8f638b68
 arch_cpu_idle+0x25/0x30 arch/x86/kernel/process.c:571
 default_idle_call kernel/sched/idle.c:94 [inline]
 cpuidle_idle_call kernel/sched/idle.c:154 [inline]
 do_idle+0x1d5/0x780 kernel/sched/idle.c:263
 cpu_startup_entry+0x45/0x50 kernel/sched/idle.c:355
 rest_init+0x1be/0x1f0 init/main.c:452
 arch_call_rest_init+0x13/0x15
 start_kernel+0x987/0xb57 init/main.c:787
 x86_64_start_reservations+0x18/0x2e arch/x86/kernel/head64.c:490
 x86_64_start_kernel+0x81/0x84 arch/x86/kernel/head64.c:471
 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:151 [inline]
 kmsan_internal_poison_shadow+0x60/0x120 mm/kmsan/kmsan.c:134
 kmsan_slab_alloc+0xaa/0x120 mm/kmsan/kmsan_hooks.c:88
 slab_alloc_node mm/slub.c:2799 [inline]
 slab_alloc mm/slub.c:2808 [inline]
 __kmalloc_track_caller+0xa56/0xeb0 mm/slub.c:4377
 kmemdup+0x95/0x140 mm/util.c:127
 __addrconf_sysctl_register+0xe1/0x7d0 net/ipv6/addrconf.c:6833
 addrconf_sysctl_register+0x2c7/0x370 net/ipv6/addrconf.c:6898
 ipv6_add_dev+0x1c02/0x1f80 net/ipv6/addrconf.c:443
 addrconf_notify+0x8a7/0x57c0 net/ipv6/addrconf.c:3491
 notifier_call_chain kernel/notifier.c:95 [inline]
 __raw_notifier_call_chain kernel/notifier.c:396 [inline]
 raw_notifier_call_chain+0x13d/0x240 kernel/notifier.c:403
 call_netdevice_notifiers_info net/core/dev.c:1749 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:1761 [inline]
 call_netdevice_notifiers net/core/dev.c:1775 [inline]
 register_netdevice+0x2126/0x26a0 net/core/dev.c:8810
 veth_newlink+0xb3b/0x13b0 drivers/net/veth.c:1302
 __rtnl_newlink net/core/rtnetlink.c:3196 [inline]
 rtnl_newlink+0x2a73/0x38d0 net/core/rtnetlink.c:3254
 rtnetlink_rcv_msg+0x115a/0x1580 net/core/rtnetlink.c:5223
 netlink_rcv_skb+0x431/0x620 net/netlink/af_netlink.c:2477
 rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:5241
 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline]
 netlink_unicast+0xf3e/0x1020 net/netlink/af_netlink.c:1328
 netlink_sendmsg+0x110f/0x1330 net/netlink/af_netlink.c:1917
 sock_sendmsg_nosec net/socket.c:637 [inline]
 sock_sendmsg net/socket.c:657 [inline]
 __sys_sendto+0xc44/0xc70 net/socket.c:1952
 __do_sys_sendto net/socket.c:1964 [inline]
 __se_sys_sendto+0x107/0x130 net/socket.c:1960
 __x64_sys_sendto+0x6e/0x90 net/socket.c:1960
 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
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