Package: src:linux Version: 3.16.43-2+deb8u2 Severity: normal Dear Maintainer,
We're running a puppet VM in KVM. After migrating to Jessie it has started to have hung ruby processes (puppet written in ruby). (dmesg below) The machine is quite active and are other VMs running the kernel version have not encountered this problem. We've run this VM on different host machines with no change therefore we suspect not an underlying hardware problem. The VM host 'uname -a' Linux vmhost18.hep.wisc.edu 3.16.0-4-amd64 #1 SMP Debian 3.16.43-2+deb8u2 (2017-06-26) x86_64 GNU/Linux The puppet VM: Linux puppet 3.16.0-4-amd64 #1 SMP Debian 3.16.43-2+deb8u2 (2017-06-26) x86_64 GNU/Linux Below is the call trace of the first occurrence in dmesg. It takes some time to trigger, though the VM is busy all the time. Once triggered, it seems to happen more often. I'm planning to revert to older 3.16 to see if that changes anything. Thanks for your time! C. [...] [145320.212096] INFO: task ruby:23097 blocked for more than 120 seconds. [145320.212994] Tainted: P O 3.16.0-4-amd64 #1 [145320.213741] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.214805] ruby D ffff8800bac33948 0 23097 23070 0x00000000 [145320.215793] ffff8800bac334f0 0000000000000082 0000000000012f40 ffff88004e48ffd8 [145320.216879] 0000000000012f40 ffff8800bac334f0 ffff8800b8e28000 000000000036906e [145320.217936] ffff8800b8e28088 ffff8800b8e28024 ffff88004e48fed0 ffff8800b8e280a0 [145320.219001] Call Trace: [145320.219359] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.220370] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.221369] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.222279] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.223031] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.223772] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [...] -- Package-specific info: ** Version: Linux version 3.16.0-4-amd64 (debian-ker...@lists.debian.org) (gcc version 4.8.4 (Debian 4.8.4-1) ) #1 SMP Debian 3.16.43-2+deb8u2 (2017-06-26) ** Command line: BOOT_IMAGE=/boot/vmlinuz-3.16.0-4-amd64 root=/dev/mapper/sys-rootfs ro console=tty0 console=ttyS0,115200n8 ** Tainted: PO (4097) * Proprietary module has been loaded. * Out-of-tree module has been loaded. ** Kernel log: [145320.263419] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.264980] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.266490] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [145320.268227] INFO: task ruby:23150 blocked for more than 120 seconds. [145320.269862] Tainted: P O 3.16.0-4-amd64 #1 [145320.271387] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.273197] ruby D ffff8800b8e638c8 0 23150 23070 0x00000000 [145320.274941] ffff8800b8e63470 0000000000000086 0000000000012f40 ffff88004e50ffd8 [145320.276753] 0000000000012f40 ffff8800b8e63470 ffff8800b8e28000 000000000036906e [145320.278536] ffff8800b8e28088 ffff8800b8e28024 ffff88004e50fed0 ffff8800b8e280a0 [145320.280344] Call Trace: [145320.281441] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.283079] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.284650] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.286217] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.287638] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.289048] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [145320.290653] INFO: task ruby:23382 blocked for more than 120 seconds. [145320.292220] Tainted: P O 3.16.0-4-amd64 #1 [145320.293668] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.295417] ruby D ffff8800b9b3da88 0 23382 23070 0x00000000 [145320.297169] ffff8800b9b3d630 0000000000000086 0000000000012f40 ffff8800bb243fd8 [145320.298975] 0000000000012f40 ffff8800b9b3d630 ffff8800b8e28000 000000000036906e [145320.300777] ffff8800b8e28088 ffff8800b8e28024 ffff8800bb243ed0 ffff8800b8e280a0 [145320.302592] Call Trace: [145320.303675] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.305323] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.306880] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.308466] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.309863] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.311265] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [145320.312896] INFO: task apt-get:23395 blocked for more than 120 seconds. [145320.314466] Tainted: P O 3.16.0-4-amd64 #1 [145320.315919] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.317712] apt-get D ffff8800ba55bac8 0 23395 23352 0x00000000 [145320.319416] ffff8800ba55b670 0000000000000086 0000000000012f40 ffff8800ba46ffd8 [145320.321218] 0000000000012f40 ffff8800ba55b670 ffff8800b8e28000 000000000036906e [145320.323013] ffff8800b8e28088 ffff8800b8e28024 ffff8800ba46fea0 ffff8800b8e280a0 [145320.324809] Call Trace: [145320.325883] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.327537] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.329109] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.330677] [<ffffffff811756af>] ? SyS_msync+0x1ff/0x250 [145320.332176] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [145320.333869] INFO: task ruby:23470 blocked for more than 120 seconds. [145320.335427] Tainted: P O 3.16.0-4-amd64 #1 [145320.336894] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.338691] ruby D ffff8800b93a84a8 0 23470 23070 0x00000000 [145320.340411] ffff8800b93a8050 0000000000000082 0000000000012f40 ffff880104a27fd8 [145320.342201] 0000000000012f40 ffff8800b93a8050 ffff8800b8e28000 000000000036906e [145320.344026] ffff8800b8e28088 ffff8800b8e28024 ffff880104a27ed0 ffff8800b8e280a0 [145320.345812] Call Trace: [145320.346911] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.348575] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.350139] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.351725] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.353154] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.354557] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [145320.356198] INFO: task ruby:23487 blocked for more than 120 seconds. [145320.357750] Tainted: P O 3.16.0-4-amd64 #1 [145320.359217] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.361017] ruby D ffff880054595038 0 23487 23070 0x00000000 [145320.362718] ffff880054594be0 0000000000000082 0000000000012f40 ffff8800b96d3fd8 [145320.364571] 0000000000012f40 ffff880054594be0 ffff8800b8e28000 000000000036906e [145320.366366] ffff8800b8e28088 ffff8800b8e28024 ffff8800b96d3ed0 ffff8800b8e280a0 [145320.368185] Call Trace: [145320.369270] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.370934] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.372543] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.374131] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.375575] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.376991] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [145320.378606] INFO: task ruby:23500 blocked for more than 120 seconds. [145320.380186] Tainted: P O 3.16.0-4-amd64 #1 [145320.381636] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.383396] ruby D ffff880036170828 0 23500 23070 0x00000000 [145320.385120] ffff8800361703d0 0000000000000082 0000000000012f40 ffff88005d3fbfd8 [145320.386936] 0000000000012f40 ffff8800361703d0 ffff8800b8e28000 000000000036906f [145320.388751] ffff8800b8e28088 ffff8800b8e28024 ffff88005d3fbed0 ffff8800b8e280a0 [145320.390551] Call Trace: [145320.391653] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.393322] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.394937] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.396539] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.397941] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.399346] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 [145320.400974] INFO: task ruby:23508 blocked for more than 120 seconds. [145320.402520] Tainted: P O 3.16.0-4-amd64 #1 [145320.403978] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [145320.405743] ruby D ffff8801278a58c8 0 23508 23070 0x00000000 [145320.407451] ffff8801278a5470 0000000000000082 0000000000012f40 ffff880127ad3fd8 [145320.409260] 0000000000012f40 ffff8801278a5470 ffff8800b8e28000 000000000036906f [145320.411051] ffff8800b8e28088 ffff8800b8e28024 ffff880127ad3ed0 ffff8800b8e280a0 [145320.412852] Call Trace: [145320.413929] [<ffffffffa01b97d5>] ? jbd2_log_wait_commit+0x95/0x100 [jbd2] [145320.415574] [<ffffffff810a9610>] ? prepare_to_wait_event+0xf0/0xf0 [145320.417150] [<ffffffffa01d07e1>] ? ext4_sync_file+0x2c1/0x350 [ext4] [145320.418752] [<ffffffff811d8c7b>] ? do_fsync+0x4b/0x70 [145320.420190] [<ffffffff811d8eec>] ? SyS_fsync+0xc/0x10 [145320.421576] [<ffffffff8151a48d>] ? system_call_fast_compare_end+0x10/0x15 ** Model information sys_vendor: QEMU product_name: Standard PC (i440FX + PIIX, 1996) product_version: pc-i440fx-2.3 chassis_vendor: QEMU chassis_version: pc-i440fx-2.3 bios_vendor: SeaBIOS bios_version: 1.7.5-20140531_083030-gandalf ** Loaded modules: 8021q garp stp mrp llc openafs(PO) nls_utf8 cifs dns_resolver fscache bochs_drm ttm joydev drm_kms_helper drm ppdev parport_pc evdev virtio_balloon processor serio_raw parport thermal_sys pcspkr button ext4 crc16 mbcache jbd2 hid_generic usbhid hid dm_snapshot dm_bufio dm_mod sg sr_mod cdrom ata_generic virtio_net virtio_blk uhci_hcd ehci_hcd ata_piix usbcore usb_common libata psmouse i2c_piix4 virtio_pci scsi_mod virtio_ring i2c_core virtio floppy ** Network interface configuration: # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet static address 144.92.181.199 netmask 255.255.254.0 gateway 144.92.180.1 mtu 9000 source /etc/network/interfaces.d/*.cfg ** Network status: *** IP interfaces and addresses: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc pfifo_fast state UP group default qlen 1000 link/ether aa:00:00:ac:7f:ca brd ff:ff:ff:ff:ff:ff inet 144.92.181.199/23 brd 144.92.181.255 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::a800:ff:feac:7fca/64 scope link valid_lft forever preferred_lft forever *** Device statistics: Inter-| Receive | Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed lo: 146671722 37908 0 0 0 0 0 0 146671722 37908 0 0 0 0 0 0 eth0: 16441264876 25623644 0 0 0 0 0 0 49525588322 10037253 0 0 0 0 0 0 *** Protocol statistics: Ip: 11128335 total packets received 0 forwarded 2 with unknown protocol 0 incoming packets discarded 11128333 incoming packets delivered 10016549 requests sent out Icmp: 871 ICMP messages received 152 input ICMP message failed. ICMP input histogram: destination unreachable: 205 timeout in transit: 5 echo requests: 627 echo replies: 34 1279 ICMP messages sent 0 ICMP messages failed ICMP output histogram: destination unreachable: 665 echo replies: 614 IcmpMsg: InType0: 34 InType3: 205 InType8: 627 InType11: 5 OutType0: 614 OutType3: 665 Tcp: 77248 active connections openings 135159 passive connection openings 531 failed connection attempts 16728 connection resets received 10 connections established 11064620 segments received 16426661 segments send out 10275 segments retransmited 15 bad segments received. 17049 resets sent InCsumErrors: 15 Udp: 63254 packets received 618 packets to unknown port received. 0 packet receive errors 543831 packets sent UdpLite: TcpExt: 3105 invalid SYN cookies received 483 resets received for embryonic SYN_RECV sockets 4 packets pruned from receive queue because of socket buffer overrun 1 ICMP packets dropped because they were out-of-window 7625 TCP sockets finished time wait in fast timer 4 packets rejects in established connections because of timestamp 374108 delayed acks sent 3051 delayed acks further delayed because of locked socket Quick ack mode was activated 1184 times 6 SYNs to LISTEN sockets dropped 34859 packets directly queued to recvmsg prequeue. 1516 bytes directly in process context from backlog 1464966 bytes directly received in process context from prequeue 2238402 packet headers predicted 13453 packets header predicted and directly queued to user 4163873 acknowledgments not containing data payload received 2063049 predicted acknowledgments 508 times recovered from packet loss by selective acknowledgements Detected reordering 19 times using time stamp 8 congestion windows fully recovered without slow start 19 congestion windows partially recovered using Hoe heuristic 76 congestion windows recovered without slow start by DSACK 15 congestion windows recovered without slow start after partial ack TCPLostRetransmit: 42 13 timeouts after SACK recovery 4 timeouts in loss state 1093 fast retransmits 125 forward retransmits 108 retransmits in slow start 1136 other TCP timeouts TCPLossProbes: 7719 TCPLossProbeRecovery: 6453 30 SACK retransmits failed 34 packets collapsed in receive queue due to low socket buffer 1184 DSACKs sent for old packets 6736 DSACKs received 794 connections reset due to unexpected data 7333 connections reset due to early user close 25 connections aborted due to timeout TCPDSACKIgnoredNoUndo: 6006 TCPSpuriousRTOs: 12 TCPSackShifted: 159 TCPSackMerged: 516 TCPSackShiftFallback: 2236 TCPDeferAcceptDrop: 113680 TCPRcvCoalesce: 929937 TCPOFOQueue: 315 TCPChallengeACK: 206 TCPSpuriousRtxHostQueues: 25 TCPAutoCorking: 182 TCPFromZeroWindowAdv: 68 TCPToZeroWindowAdv: 68 TCPWantZeroWindowAdv: 6780 TCPSynRetrans: 1628 TCPOrigDataSent: 13886349 IpExt: InBcastPkts: 14 InOctets: 15560585936 OutOctets: 49529968286 InBcastOctets: 6342 InNoECTPkts: 11126649 InECT0Pkts: 1673 InCEPkts: 13 ** PCI devices: 00:00.0 Host bridge [0600]: Intel Corporation 440FX - 82441FX PMC [Natoma] [8086:1237] (rev 02) Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100] Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 00:01.0 ISA bridge [0601]: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II] [8086:7000] Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100] Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- 00:01.1 IDE interface [0101]: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] [8086:7010] (prog-if 80 [Master]) Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8] Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8] Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) Region 4: I/O ports at c0a0 [size=16] Kernel driver in use: ata_piix 00:01.2 USB controller [0c03]: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] [8086:7020] (rev 01) (prog-if 00 [UHCI]) Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin D routed to IRQ 11 Region 4: I/O ports at c040 [size=32] Kernel driver in use: uhci_hcd 00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113] (rev 03) Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100] Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Interrupt: pin A routed to IRQ 9 Kernel driver in use: piix4_smbus 00:02.0 VGA compatible controller [0300]: Device [1234:1111] (rev 02) (prog-if 00 [VGA controller]) Subsystem: Red Hat, Inc Device [1af4:1100] Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Region 0: Memory at fd000000 (32-bit, prefetchable) [size=16M] Region 2: Memory at febd0000 (32-bit, non-prefetchable) [size=4K] Expansion ROM at febc0000 [disabled] [size=64K] Kernel driver in use: bochs-drm 00:03.0 Unclassified device [00ff]: Red Hat, Inc Virtio memory balloon [1af4:1002] Subsystem: Red Hat, Inc Device [1af4:0005] Physical Slot: 3 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 10 Region 0: I/O ports at c060 [size=32] Kernel driver in use: virtio-pci 00:04.0 SCSI storage controller [0100]: Red Hat, Inc Virtio block device [1af4:1001] Subsystem: Red Hat, Inc Device [1af4:0002] Physical Slot: 4 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 11 Region 0: I/O ports at c000 [size=64] Region 1: Memory at febd1000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> Kernel driver in use: virtio-pci 00:05.0 Ethernet controller [0200]: Red Hat, Inc Virtio network device [1af4:1000] Subsystem: Red Hat, Inc Device [1af4:0001] Physical Slot: 5 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 10 Region 0: I/O ports at c080 [size=32] Region 1: Memory at febd2000 (32-bit, non-prefetchable) [size=4K] Expansion ROM at feb80000 [disabled] [size=256K] Capabilities: <access denied> Kernel driver in use: virtio-pci ** USB devices: Bus 001 Device 002: ID 0627:0001 Adomax Technology Co., Ltd Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub -- System Information: Debian Release: 8.9 APT prefers oldstable-updates APT policy: (500, 'oldstable-updates'), (500, 'oldstable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/6 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages linux-image-3.16.0-4-amd64 depends on: ii debconf [debconf-2.0] 1.5.56+deb8u1 ii initramfs-tools [linux-initramfs-tool] 0.120+deb8u3 ii kmod 18-3 ii linux-base 4.3~bpo8+1 Versions of packages linux-image-3.16.0-4-amd64 recommends: ii firmware-linux-free 3.3 ii irqbalance 1.0.6-3+deb8u1 Versions of packages linux-image-3.16.0-4-amd64 suggests: pn debian-kernel-handbook <none> ii grub-pc 2.02~beta2-22+deb8u1 pn linux-doc-3.16 <none> Versions of packages linux-image-3.16.0-4-amd64 is related to: pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> pn firmware-brcm80211 <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux <none> pn firmware-linux-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-ralink <none> pn firmware-realtek <none> pn xen-hypervisor <none> -- debconf information: linux-image-3.16.0-4-amd64/prerm/removing-running-kernel-3.16.0-4-amd64: true linux-image-3.16.0-4-amd64/postinst/mips-initrd-3.16.0-4-amd64: linux-image-3.16.0-4-amd64/postinst/depmod-error-initrd-3.16.0-4-amd64: false