kvm: SMP vm created on host with unstable TSC; guest TSC will not be reliable
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BUG: KMSAN: uninit-value in memcmp+0x117/0x180 lib/string.c:865
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.0.0+ #17
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x173/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x131/0x2a0 mm/kmsan/kmsan.c:624
 __msan_warning+0x7a/0xf0 mm/kmsan/kmsan_instr.c:310
 memcmp+0x117/0x180 lib/string.c:865
 __hw_addr_add_ex net/core/dev_addr_lists.c:61 [inline]
 __dev_mc_add+0x1f9/0x8c0 net/core/dev_addr_lists.c:770
 dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:787
 igmp6_group_added+0x2d4/0xad0 net/ipv6/mcast.c:676
 __ipv6_dev_mc_inc+0xdc7/0xfa0 net/ipv6/mcast.c:934
 ipv6_dev_mc_inc+0x70/0x80 net/ipv6/mcast.c:941
 addrconf_join_solict net/ipv6/addrconf.c:2116 [inline]
 addrconf_dad_begin net/ipv6/addrconf.c:3901 [inline]
 addrconf_dad_work+0x50c/0x26e0 net/ipv6/addrconf.c:4028
 process_one_work+0x1607/0x2010 kernel/workqueue.c:2173
 worker_thread+0x111c/0x2460 kernel/workqueue.c:2319
 kthread+0x4a1/0x4e0 kernel/kthread.c:247
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355

Local variable description: ----buf@igmp6_group_added
Variable was created at:
 igmp6_group_added+0x57/0xad0 net/ipv6/mcast.c:664
 __ipv6_dev_mc_inc+0xdc7/0xfa0 net/ipv6/mcast.c:934
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