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For info, please visit https://www.isc.org/software/dhcp/
Listening on LPF/eth0/42:01:0a:80:0a:16
Sending[ 26.096245] ==================================================================
on LPF/eth0/4[ 26.104273] BUG: KMSAN: uninit-value in receive_mergeable drivers/net/virtio_net.c:817 [inline]
on LPF/eth0/4[ 26.104273] BUG: KMSAN: uninit-value in receive_buf+0x324e/0x6ae0 drivers/net/virtio_net.c:917
2:01:0a:80:0a:16[ 26.111877] CPU: 0 PID: 2166 Comm: startpar Not tainted 4.17.0+ #5
[ 26.119559] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 26.128895] Call Trace:
[ 26.131624]
[ 26.133776] __dump_stack lib/dump_stack.c:77 [inline]
[ 26.133776] dump_stack+0x185/0x1d0 lib/dump_stack.c:113
[ 26.137405] kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1117
[ 26.141207] __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620
[ 26.145267] receive_mergeable drivers/net/virtio_net.c:817 [inline]
[ 26.145267] receive_buf+0x324e/0x6ae0 drivers/net/virtio_net.c:917
[ 26.149170] virtnet_receive drivers/net/virtio_net.c:1200 [inline]
[ 26.149170] virtnet_poll+0xac2/0x1540 drivers/net/virtio_net.c:1286
[ 26.153052] ? refill_work+0x2c0/0x2c0 drivers/net/virtio_net.c:1187
[ 26.156921] napi_poll net/core/dev.c:5735 [inline]
[ 26.156921] net_rx_action+0x766/0x1a80 net/core/dev.c:5801
[ 26.160873] ? net_tx_action+0xad0/0xad0 net/core/dev.c:4289
[ 26.164926] __do_softirq+0x592/0x979 kernel/softirq.c:285
[ 26.168731] invoke_softirq kernel/softirq.c:365 [inline]
[ 26.168731] irq_exit+0x202/0x240 kernel/softirq.c:405
[ 26.172185] exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
[ 26.175643] do_IRQ+0x17d/0x1c0 arch/x86/kernel/irq.c:264
[ 26.178919] common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642
[ 26.182705]
[ 26.184932] RIP: 0010:finish_lock_switch+0x38/0x50 kernel/sched/core.c:2626
[ 26.189835] RSP: 0018:ffff8801cbbcfaa0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd8
[ 26.197517] RAX: ffff88021f0dac40 RBX: 0000000000000402 RCX: ffff880000000000
[ 26.204772] RDX: ffff88021f0dbc40 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000
[ 26.212037] RBP: ffff8801cbbcfab8 R08: 0000000001080020 R09: 0000000000000002
[ 26.219299] R10: 0000000000000000 R11: ffffffff813553c0 R12: ffff88021fc3ec40
[ 26.226560] R13: ffff8801d8afe098 R14: 0000000000000000 R15: ffff88021f0dac40
[ 26.233835] ? check_preempt_wakeup+0x1550/0x1550 kernel/sched/fair.c:201
[ 26.238678] finish_task_switch+0xde/0x270 kernel/sched/core.c:2725
[ 26.242914] context_switch kernel/sched/core.c:2883 [inline]
[ 26.242914] __schedule+0x66b/0x770 kernel/sched/core.c:3524
[ 26.246548] preempt_schedule_common kernel/sched/core.c:3648 [inline]
[ 26.246548] _cond_resched+0x5e/0xd0 kernel/sched/core.c:4999
[ 26.250259] ? dput+0x2a/0x560 fs/dcache.c:829
[ 26.253461] dput+0x80/0x560 fs/dcache.c:834
[ 26.256475] ? put_filp+0x160/0x160
[ 26.260109] __fput+0x95d/0xa30 fs/file_table.c:227
[ 26.263394] ? fput+0x2e0/0x2e0 fs/file_table.c:268
[ 26.266660] ____fput+0x37/0x40 fs/file_table.c:243
[ 26.269915] task_work_run+0x22e/0x2b0 kernel/task_work.c:113
[ 26.273779] tracehook_notify_resume include/linux/tracehook.h:191 [inline]
[ 26.273779] exit_to_usermode_loop arch/x86/entry/common.c:166 [inline]
[ 26.273779] prepare_exit_to_usermode+0x33c/0x3a0 arch/x86/entry/common.c:196
[ 26.278596] syscall_return_slowpath+0xe9/0x710 arch/x86/entry/common.c:265
[ 26.283242] ? __close_fd+0x47b/0x4d0 fs/file.c:635
[ 26.287034] do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:290
[ 26.290904] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 26.296067] RIP: 0033:0x7efd2694b2b0
[ 26.299765] RSP: 002b:00007ffdb046d9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[ 26.307448] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007efd2694b2b0
[ 26.314692] RDX: 0000000000000000 RSI: 0000000040045431 RDI: 0000000000000004
[ 26.321935] RBP: 00000000022b15d0 R08: 00007efd269c17e0 R09: 000000000000bdfc
[ 26.329180] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000022b15d0
[ 26.336431] R13: 0000000000000001 R14: 0000000000002048 R15: 000000005b20b44f
[ 26.343676]
[ 26.345277] Uninit was stored to memory at:
[ 26.349576] kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline]
[ 26.349576] kmsan_save_stack mm/kmsan/kmsan.c:294 [inline]
[ 26.349576] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:685
[ 26.354662] __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464
[ 26.358874] receive_mergeable drivers/net/virtio_net.c:690 [inline]
[ 26.358874] receive_buf+0x2dbb/0x6ae0 drivers/net/virtio_net.c:917
[ 26.362737] virtnet_receive drivers/net/virtio_net.c:1200 [inline]
[ 26.362737] virtnet_poll+0xac2/0x1540 drivers/net/virtio_net.c:1286
[ 26.366602] napi_poll net/core/dev.c:5735 [inline]
[ 26.366602] net_rx_action+0x766/0x1a80 net/core/dev.c:5801
[ 26.370571] __do_softirq+0x592/0x979 kernel/softirq.c:285
[ 26.374355] Uninit was created at:
[ 26.377896] kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline]
[ 26.377896] kmsan_alloc_meta_for_pages+0x161/0x3a0 mm/kmsan/kmsan.c:815
[ 26.382911] kmsan_alloc_page+0x82/0xe0 mm/kmsan/kmsan.c:885
[ 26.386885] __alloc_pages_nodemask+0xf7b/0x5cc0 mm/page_alloc.c:4402
[ 26.391635] alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093
[ 26.396039] alloc_pages include/linux/gfp.h:494 [inline]
[ 26.396039] skb_page_frag_refill+0x3ba/0x5e0 net/core/sock.c:2211
[ 26.400531] add_recvbuf_mergeable drivers/net/virtio_net.c:1067 [inline]
[ 26.400531] try_fill_recv+0x3d5/0x2580 drivers/net/virtio_net.c:1108
[ 26.404502] virtnet_open+0x188/0x600 drivers/net/virtio_net.c:1311
[ 26.408303] __dev_open+0x613/0x840 net/core/dev.c:1392
[ 26.411940] __dev_change_flags+0x401/0xb60 net/core/dev.c:6955
[ 26.416272] dev_change_flags+0xca/0x230 net/core/dev.c:7024
[ 26.420327] do_setlink+0x165b/0x6010 net/core/rtnetlink.c:2362
[ 26.424125] rtnl_newlink+0x2b33/0x37a0 net/core/rtnetlink.c:2970
[ 26.428094] rtnetlink_rcv_msg+0xa44/0x1570 net/core/rtnetlink.c:4646
[ 26.432410] netlink_rcv_skb+0x37e/0x600 net/netlink/af_netlink.c:2448
[ 26.436465] rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:4664
[ 26.440157] netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
[ 26.440157] netlink_unicast+0x1680/0x1750 net/netlink/af_netlink.c:1336
[ 26.444379] netlink_sendmsg+0x104f/0x1350 net/netlink/af_netlink.c:1901
[ 26.448588] sock_sendmsg_nosec net/socket.c:629 [inline]
[ 26.448588] sock_sendmsg net/socket.c:639 [inline]
[ 26.448588] ___sys_sendmsg+0xec8/0x1320 net/socket.c:2117
[ 26.452630] __sys_sendmsg net/socket.c:2155 [inline]
[ 26.452630] __do_sys_sendmsg net/socket.c:2164 [inline]
[ 26.452630] __se_sys_sendmsg net/socket.c:2162 [inline]
[ 26.452630] __x64_sys_sendmsg+0x331/0x460 net/socket.c:2162
[ 26.456847] do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
[ 26.460713] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 26.465874] ==================================================================
[ 26.473204] Disabling lock debugging due to kernel taint
[ 26.478624] Kernel panic - not syncing: panic_on_warn set ...
[ 26.478624]
[ 26.485961] CPU: 0 PID: 2166 Comm: startpar Tainted: G B 4.17.0+ #5
[ 26.493641] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 26.502968] Call Trace:
[ 26.505523]
[ 26.507662] __dump_stack lib/dump_stack.c:77 [inline]
[ 26.507662] dump_stack+0x185/0x1d0 lib/dump_stack.c:113
[ 26.511267] panic+0x3d0/0x990 kernel/panic.c:184
[ 26.514440] kmsan_report+0x29e/0x2a0 mm/kmsan/kmsan.c:1136
[ 26.518215] __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620
[ 26.522255] receive_mergeable drivers/net/virtio_net.c:817 [inline]
[ 26.522255] receive_buf+0x324e/0x6ae0 drivers/net/virtio_net.c:917
[ 26.526129] virtnet_receive drivers/net/virtio_net.c:1200 [inline]
[ 26.526129] virtnet_poll+0xac2/0x1540 drivers/net/virtio_net.c:1286
[ 26.529993] ? refill_work+0x2c0/0x2c0 drivers/net/virtio_net.c:1187
[ 26.533858] napi_poll net/core/dev.c:5735 [inline]
[ 26.533858] net_rx_action+0x766/0x1a80 net/core/dev.c:5801
[ 26.537821] ? net_tx_action+0xad0/0xad0 net/core/dev.c:4289
[ 26.541857] __do_softirq+0x592/0x979 kernel/softirq.c:285
[ 26.545634] invoke_softirq kernel/softirq.c:365 [inline]
[ 26.545634] irq_exit+0x202/0x240 kernel/softirq.c:405
[ 26.549065] exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
[ 26.552501] do_IRQ+0x17d/0x1c0 arch/x86/kernel/irq.c:264
[ 26.555756] common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642
[ 26.559527]
[ 26.561748] RIP: 0010:finish_lock_switch+0x38/0x50 kernel/sched/core.c:2626
[ 26.566650] RSP: 0018:ffff8801cbbcfaa0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd8
[ 26.574332] RAX: ffff88021f0dac40 RBX: 0000000000000402 RCX: ffff880000000000
[ 26.581575] RDX: ffff88021f0dbc40 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000
[ 26.588818] RBP: ffff8801cbbcfab8 R08: 0000000001080020 R09: 0000000000000002
[ 26.596063] R10: 0000000000000000 R11: ffffffff813553c0 R12: ffff88021fc3ec40
[ 26.603308] R13: ffff8801d8afe098 R14: 0000000000000000 R15: ffff88021f0dac40
[ 26.610559] ? check_preempt_wakeup+0x1550/0x1550 kernel/sched/fair.c:201
[ 26.615380] finish_task_switch+0xde/0x270 kernel/sched/core.c:2725
[ 26.619591] context_switch kernel/sched/core.c:2883 [inline]
[ 26.619591] __schedule+0x66b/0x770 kernel/sched/core.c:3524
[ 26.623196] preempt_schedule_common kernel/sched/core.c:3648 [inline]
[ 26.623196] _cond_resched+0x5e/0xd0 kernel/sched/core.c:4999
[ 26.626886] ? dput+0x2a/0x560 fs/dcache.c:829
[ 26.630052] dput+0x80/0x560 fs/dcache.c:834
[ 26.633051] ? put_filp+0x160/0x160 fs/file_table.c:309
[ 26.636662] __fput+0x95d/0xa30 fs/file_table.c:227
[ 26.639928] ? fput+0x2e0/0x2e0 fs/file_table.c:268
[ 26.643183] ____fput+0x37/0x40 fs/file_table.c:243
[ 26.646437] task_work_run+0x22e/0x2b0 kernel/task_work.c:113
[ 26.650303] tracehook_notify_resume include/linux/tracehook.h:191 [inline]
[ 26.650303] exit_to_usermode_loop arch/x86/entry/common.c:166 [inline]
[ 26.650303] prepare_exit_to_usermode+0x33c/0x3a0 arch/x86/entry/common.c:196
[ 26.655127] syscall_return_slowpath+0xe9/0x710 arch/x86/entry/common.c:265
[ 26.659782] ? __close_fd+0x47b/0x4d0 fs/file.c:635
[ 26.663570] do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:290
[ 26.667440] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 26.672604] RIP: 0033:0x7efd2694b2b0
[ 26.676291] RSP: 002b:00007ffdb046d9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[ 26.683976] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007efd2694b2b0
[ 26.691221] RDX: 0000000000000000 RSI: 0000000040045431 RDI: 0000000000000004
[ 26.698466] RBP: 00000000022b15d0 R08: 00007efd269c17e0 R09: 000000000000bdfc
[ 26.705709] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000022b15d0
[ 26.712955] R13: 0000000000000001 R14: 0000000000002048 R15: 000000005b20b44f
[ 26.720657] Dumping ftrace buffer:
[ 26.724177] (ftrace buffer empty)
[ 26.727858] Kernel Offset: disabled
[ 26.731460] Rebooting in 86400 seconds..