L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/l1tf.html for details. IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready ================================================================== BUG: KMSAN: uninit-value in vmcs_clear arch/x86/kvm/vmx.c:2119 [inline] BUG: KMSAN: uninit-value in loaded_vmcs_init+0x343/0x590 arch/x86/kvm/vmx.c:2126 CPU: 0 PID: 13 Comm: kworker/0:1 Not tainted 4.19.0-rc4+ #63 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: rcu_gp process_srcu Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x306/0x460 lib/dump_stack.c:113 kmsan_report+0x1a3/0x2d0 mm/kmsan/kmsan.c:917 __msan_warning+0x7c/0xe0 mm/kmsan/kmsan_instr.c:500 vmcs_clear arch/x86/kvm/vmx.c:2119 [inline] loaded_vmcs_init+0x343/0x590 arch/x86/kvm/vmx.c:2126 __loaded_vmcs_clear+0x2fb/0x3c0 arch/x86/kvm/vmx.c:2209 flush_smp_call_function_queue+0x404/0x770 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0x1f/0x30 kernel/smp.c:192 smp_call_function_single_interrupt+0x2f7/0x530 arch/x86/kernel/smp.c:296 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:891 RIP: 0010:srcu_gp_end kernel/rcu/srcutree.c:577 [inline] RIP: 0010:srcu_advance_state kernel/rcu/srcutree.c:1159 [inline] RIP: 0010:process_srcu+0xa00/0x1980 kernel/rcu/srcutree.c:1249 Code: c7 03 00 00 00 00 48 83 7d c0 00 0f 85 d4 04 00 00 48 8b 9d 70 ff ff ff 48 89 df e8 6a a1 83 00 c6 00 00 c6 03 00 fb 45 84 e4 <0f> 85 c2 04 00 00 45 84 ed 4c 8b 6d a8 0f 84 0d 05 00 00 48 8b 9d RSP: 0018:ffff8801d16dfaf8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 RAX: ffff8801a721a120 RBX: ffffc9000da02120 RCX: ffff880143dd4120 RDX: ffff880143dd4120 RSI: aaaaaaaaaaaab000 RDI: ffffea000798a2c0 RBP: ffff8801d16dfc48 R08: ffffffff7fffff00 R09: ffff88021fc38f50 R10: 0000000000000000 R11: ffffffff813f17c0 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 process_one_work+0x19c4/0x24f0 kernel/workqueue.c:2153 worker_thread+0x206d/0x2b30 kernel/workqueue.c:2296 kthread+0x59c/0x5d0 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:416 Local variable description: ----error.i@loaded_vmcs_init Variable was created at: loaded_vmcs_init+0x8a/0x590 arch/x86/kvm/vmx.c:2125 __loaded_vmcs_clear+0x2fb/0x3c0 arch/x86/kvm/vmx.c:2209 ==================================================================