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Listening on LPF/eth0/42:01:0a:8[ 27.046393] ==================================================================
0:0a:38
Sending[ 27.054078] BUG: KMSAN: uninit-value in receive_mergeable drivers/net/virtio_net.c:817 [inline]
Sending[ 27.054078] BUG: KMSAN: uninit-value in receive_buf+0x324e/0x6ae0 drivers/net/virtio_net.c:917
on LPF/eth0/4[ 27.061671] CPU: 0 PID: 4207 Comm: net.agent Not tainted 4.17.0+ #1
[ 27.069440] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
2:01:0a:80:0a:38[ 27.078775] Call Trace:
[ 27.082718]
Sending on S[ 27.084863] __dump_stack lib/dump_stack.c:77 [inline]
Sending on S[ 27.084863] dump_stack+0x185/0x1d0 lib/dump_stack.c:113
ocket/fallback
[ 27.089849] kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1117
[ 27.095023] __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620
DHCPDISCOVER on [ 27.099080] receive_mergeable drivers/net/virtio_net.c:817 [inline]
DHCPDISCOVER on [ 27.099080] receive_buf+0x324e/0x6ae0 drivers/net/virtio_net.c:917
eth0 to 255.255.[ 27.104354] virtnet_receive drivers/net/virtio_net.c:1200 [inline]
eth0 to 255.255.[ 27.104354] virtnet_poll+0xac2/0x1540 drivers/net/virtio_net.c:1286
255.255 port 67 [ 27.109622] ? refill_work+0x2c0/0x2c0 drivers/net/virtio_net.c:1187
interval 8
[ 27.114886] napi_poll net/core/dev.c:5735 [inline]
[ 27.114886] net_rx_action+0x766/0x1a80 net/core/dev.c:5801
[ 27.119914] ? net_tx_action+0xad0/0xad0 net/core/dev.c:4289
[ 27.123984] __do_softirq+0x592/0x979 kernel/softirq.c:285
[ 27.127776] invoke_softirq kernel/softirq.c:365 [inline]
[ 27.127776] irq_exit+0x202/0x240 kernel/softirq.c:405
[ 27.131209] exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
[ 27.134637] do_IRQ+0x17d/0x1c0 arch/x86/kernel/irq.c:264
[ 27.137893] common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642
[ 27.141663]
[ 27.143881] RIP: 0010:__msan_poison_alloca+0x150/0x1d0 mm/kmsan/kmsan_instr.c:590
[ 27.149127] RSP: 0000:ffff880197f7f910 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd8
[ 27.156810] RAX: 000000009200006f RBX: 000000009200006f RCX: ffff880197f7f950
[ 27.164058] RDX: 0000000000000004 RSI: 0000000000000004 RDI: ffff880197f7f9f7
[ 27.171305] RBP: ffff880197f7f9b0 R08: 0000000001080020 R09: 0000000000000002
[ 27.178551] R10: 0000000000000000 R11: ffffffff81928dc0 R12: 0000000000000000
[ 27.185795] R13: ffffffff8acc1220 R14: 0000000000000246 R15: ffff880196788000
[ 27.193060] ? filemap_fault+0x2590/0x2590 include/linux/memcontrol.h:666
[ 27.197280] ? alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.201410] ? page_add_file_rmap+0x88/0x6b0 mm/rmap.c:1179
[ 27.205793] ? alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.209914] ? alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.214043] page_add_file_rmap+0x88/0x6b0 mm/rmap.c:1179
[ 27.218254] alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.222209] filemap_map_pages+0x12d7/0x1ac0 mm/filemap.c:2677
[ 27.226596] ? kmsan_set_origin_inline+0x6b/0x120 mm/kmsan/kmsan_instr.c:528
[ 27.231417] ? filemap_fault+0x2590/0x2590 include/linux/memcontrol.h:666
[ 27.235625] do_fault_around mm/memory.c:3595 [inline]
[ 27.235625] do_read_fault mm/memory.c:3629 [inline]
[ 27.235625] do_fault mm/memory.c:3734 [inline]
[ 27.235625] handle_pte_fault mm/memory.c:3965 [inline]
[ 27.235625] __handle_mm_fault mm/memory.c:4089 [inline]
[ 27.235625] handle_mm_fault+0x2f6b/0x7ed0 mm/memory.c:4126
[ 27.239841] ? filemap_fault+0x2590/0x2590 include/linux/memcontrol.h:666
[ 27.244071] __do_page_fault+0xec6/0x1a10 arch/x86/mm/fault.c:1400
[ 27.248201] do_page_fault+0xb7/0x250 arch/x86/mm/fault.c:1477
[ 27.251976] ? page_fault+0x8/0x30 arch/x86/entry/entry_64.S:1160
[ 27.255492] page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1160
[ 27.258922] RIP: 0033:0x7fd48a3dd9f0
[ 27.262616] RSP: 002b:00007ffe595440e8 EFLAGS: 00010246
[ 27.267952] RAX: 0000000000716758 RBX: 00000000007166b0 RCX: 0000000000716768
[ 27.275199] RDX: 00000000007166e8 RSI: 00000000007166b0 RDI: 0000000000716758
[ 27.282443] RBP: 0000000000716758 R08: 0000000000716660 R09: 00007fd48a162800
[ 27.289686] R10: 00007fd48a5e19d0 R11: 00007fd48a194750 R12: 00000000007166e8
[ 27.296931] R13: 00000000007166e8 R14: 0000000000000000 R15: 0000000000000000
[ 27.304178]
[ 27.305778] Uninit was stored to memory at:
[ 27.310087] kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline]
[ 27.310087] kmsan_save_stack mm/kmsan/kmsan.c:294 [inline]
[ 27.310087] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:685
[ 27.315167] __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464
[ 27.319377] receive_mergeable drivers/net/virtio_net.c:690 [inline]
[ 27.319377] receive_buf+0x2dbb/0x6ae0 drivers/net/virtio_net.c:917
[ 27.323243] virtnet_receive drivers/net/virtio_net.c:1200 [inline]
[ 27.323243] virtnet_poll+0xac2/0x1540 drivers/net/virtio_net.c:1286
[ 27.327105] napi_poll net/core/dev.c:5735 [inline]
[ 27.327105] net_rx_action+0x766/0x1a80 net/core/dev.c:5801
[ 27.331071] __do_softirq+0x592/0x979 kernel/softirq.c:285
[ 27.334862] Uninit was created at:
[ 27.338412] kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline]
[ 27.338412] kmsan_alloc_meta_for_pages+0x161/0x3a0 mm/kmsan/kmsan.c:815
[ 27.343421] kmsan_alloc_page+0x82/0xe0 mm/kmsan/kmsan.c:885
[ 27.347373] __alloc_pages_nodemask+0xf7b/0x5cc0 mm/page_alloc.c:4402
[ 27.352107] alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093
[ 27.356494] alloc_pages include/linux/gfp.h:494 [inline]
[ 27.356494] skb_page_frag_refill+0x3ba/0x5e0 net/core/sock.c:2211
[ 27.360979] add_recvbuf_mergeable drivers/net/virtio_net.c:1067 [inline]
[ 27.360979] try_fill_recv+0x3d5/0x2580 drivers/net/virtio_net.c:1108
[ 27.364949] virtnet_open+0x188/0x600 drivers/net/virtio_net.c:1311
[ 27.368741] __dev_open+0x613/0x840 net/core/dev.c:1392
[ 27.372346] __dev_change_flags+0x401/0xb60 net/core/dev.c:6955
[ 27.376649] dev_change_flags+0xca/0x230 net/core/dev.c:7024
[ 27.380683] do_setlink+0x165b/0x6010 net/core/rtnetlink.c:2362
[ 27.384455] rtnl_newlink+0x2b33/0x37a0 net/core/rtnetlink.c:2970
[ 27.388407] rtnetlink_rcv_msg+0xa44/0x1570 net/core/rtnetlink.c:4646
[ 27.392705] netlink_rcv_skb+0x37e/0x600 net/netlink/af_netlink.c:2448
[ 27.396738] rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:4664
[ 27.400426] netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
[ 27.400426] netlink_unicast+0x1680/0x1750 net/netlink/af_netlink.c:1336
[ 27.404632] netlink_sendmsg+0x104f/0x1350 net/netlink/af_netlink.c:1901
[ 27.408840] sock_sendmsg_nosec net/socket.c:629 [inline]
[ 27.408840] sock_sendmsg net/socket.c:639 [inline]
[ 27.408840] ___sys_sendmsg+0xec8/0x1320 net/socket.c:2117
[ 27.412877] __sys_sendmsg net/socket.c:2155 [inline]
[ 27.412877] __do_sys_sendmsg net/socket.c:2164 [inline]
[ 27.412877] __se_sys_sendmsg net/socket.c:2162 [inline]
[ 27.412877] __x64_sys_sendmsg+0x331/0x460 net/socket.c:2162
[ 27.417092] do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
[ 27.420959] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 27.426119] ==================================================================
[ 27.433448] Disabling lock debugging due to kernel taint
[ 27.438870] Kernel panic - not syncing: panic_on_warn set ...
[ 27.438870]
[ 27.446209] CPU: 0 PID: 4207 Comm: net.agent Tainted: G B 4.17.0+ #1
[ 27.453974] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 27.463302] Call Trace:
[ 27.465860]
[ 27.467989] __dump_stack lib/dump_stack.c:77 [inline]
[ 27.467989] dump_stack+0x185/0x1d0 lib/dump_stack.c:113
[ 27.471594] panic+0x3d0/0x990 kernel/panic.c:184
[ 27.474764] kmsan_report+0x29e/0x2a0 mm/kmsan/kmsan.c:1136
[ 27.478541] __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620
[ 27.482581] receive_mergeable drivers/net/virtio_net.c:817 [inline]
[ 27.482581] receive_buf+0x324e/0x6ae0 drivers/net/virtio_net.c:917
[ 27.486449] virtnet_receive drivers/net/virtio_net.c:1200 [inline]
[ 27.486449] virtnet_poll+0xac2/0x1540 drivers/net/virtio_net.c:1286
[ 27.490315] ? refill_work+0x2c0/0x2c0 drivers/net/virtio_net.c:1187
[ 27.494191] napi_poll net/core/dev.c:5735 [inline]
[ 27.494191] net_rx_action+0x766/0x1a80 net/core/dev.c:5801
[ 27.498142] ? net_tx_action+0xad0/0xad0 net/core/dev.c:4289
[ 27.502181] __do_softirq+0x592/0x979 kernel/softirq.c:285
[ 27.505959] invoke_softirq kernel/softirq.c:365 [inline]
[ 27.505959] irq_exit+0x202/0x240 kernel/softirq.c:405
[ 27.509400] exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
[ 27.512828] do_IRQ+0x17d/0x1c0 arch/x86/kernel/irq.c:264
[ 27.516082] common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642
[ 27.519854]
[ 27.522066] RIP: 0010:__msan_poison_alloca+0x150/0x1d0 mm/kmsan/kmsan_instr.c:590
[ 27.527329] RSP: 0000:ffff880197f7f910 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd8
[ 27.535014] RAX: 000000009200006f RBX: 000000009200006f RCX: ffff880197f7f950
[ 27.542269] RDX: 0000000000000004 RSI: 0000000000000004 RDI: ffff880197f7f9f7
[ 27.549514] RBP: ffff880197f7f9b0 R08: 0000000001080020 R09: 0000000000000002
[ 27.556761] R10: 0000000000000000 R11: ffffffff81928dc0 R12: 0000000000000000
[ 27.564011] R13: ffffffff8acc1220 R14: 0000000000000246 R15: ffff880196788000
[ 27.571274] ? filemap_fault+0x2590/0x2590 include/linux/memcontrol.h:666
[ 27.575486] ? alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.579611] ? page_add_file_rmap+0x88/0x6b0 mm/rmap.c:1179
[ 27.583993] ? alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.588118] ? alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.592240] page_add_file_rmap+0x88/0x6b0 mm/rmap.c:1179
[ 27.596449] alloc_set_pte+0x8c7/0x1d80 mm/memory.c:3449
[ 27.600407] filemap_map_pages+0x12d7/0x1ac0 mm/filemap.c:2677
[ 27.604791] ? kmsan_set_origin_inline+0x6b/0x120 mm/kmsan/kmsan_instr.c:528
[ 27.609612] ? filemap_fault+0x2590/0x2590 include/linux/memcontrol.h:666
[ 27.613820] do_fault_around mm/memory.c:3595 [inline]
[ 27.613820] do_read_fault mm/memory.c:3629 [inline]
[ 27.613820] do_fault mm/memory.c:3734 [inline]
[ 27.613820] handle_pte_fault mm/memory.c:3965 [inline]
[ 27.613820] __handle_mm_fault mm/memory.c:4089 [inline]
[ 27.613820] handle_mm_fault+0x2f6b/0x7ed0 mm/memory.c:4126
[ 27.618046] ? filemap_fault+0x2590/0x2590 include/linux/memcontrol.h:666
[ 27.622264] __do_page_fault+0xec6/0x1a10 arch/x86/mm/fault.c:1400
[ 27.626395] do_page_fault+0xb7/0x250 arch/x86/mm/fault.c:1477
[ 27.630174] ? page_fault+0x8/0x30 arch/x86/entry/entry_64.S:1160
[ 27.633689] page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1160
[ 27.637116] RIP: 0033:0x7fd48a3dd9f0
[ 27.640801] RSP: 002b:00007ffe595440e8 EFLAGS: 00010246
[ 27.646137] RAX: 0000000000716758 RBX: 00000000007166b0 RCX: 0000000000716768
[ 27.653387] RDX: 00000000007166e8 RSI: 00000000007166b0 RDI: 0000000000716758
[ 27.660631] RBP: 0000000000716758 R08: 0000000000716660 R09: 00007fd48a162800
[ 27.667883] R10: 00007fd48a5e19d0 R11: 00007fd48a194750 R12: 00000000007166e8
[ 27.675129] R13: 00000000007166e8 R14: 0000000000000000 R15: 0000000000000000
[ 27.682857] Dumping ftrace buffer:
[ 27.686373] (ftrace buffer empty)
[ 27.690058] Kernel Offset: disabled
[ 27.693660] Rebooting in 86400 seconds..