Package: src:linux Version: 4.9.110-1 Severity: important Dear Maintainers,
I'm observing packet drops after upgrade to linux-image-4.9.0-7-amd64. It happens only in systems running as HVM Guest in XenServer 7.0 and 7.5 enviroment. Only forwarded packets are dropped (system is acting as ip-router). ifconfig shows: eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ... TX packets 694366 bytes 69105907 (65.9 MiB) TX errors 0 dropped 23094 overruns 0 carrier 0 collisions 0 eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ... TX packets 681894 bytes 311324956 (296.9 MiB) TX errors 0 dropped 16159 overruns 0 carrier 0 collisions 0 The packets are really dropped (one of these systems is routing VOIP UDP packets and I can hear it). It happens only in virtual enviroment. I have two hardware serwers with Debian9 and they don't drop any packets. Only forwarded packets are dropped. I have virtual server in the same XenServer env. acting as mail server and there is no any packet dropped. The problem disappears, when I booted with previous kernel from linux-image-4.9.0-6-amd64 package. -- Package-specific info: ** Version: Linux version 4.9.0-7-amd64 (debian-kernel@lists.debian.org) (gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1) ) #1 SMP Debian 4.9.110-1 (2018-07-05) ** Command line: BOOT_IMAGE=/vmlinuz-4.9.0-7-amd64 root=/dev/mapper/vg0-root ro quiet ** Not tainted ** Kernel log: Unable to read kernel log; any relevant messages should be attached ** Model information sys_vendor: Xen product_name: HVM domU product_version: 4.7.5-5.3 chassis_vendor: Xen chassis_version: bios_vendor: Xen bios_version: 4.7.5-5.3 ** Loaded modules: xt_nat iptable_nat nf_nat_ipv4 nf_nat ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ipt_REJECT nf_reject_ipv4 xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter ip_tables x_tables tun xenfs xen_privcmd nfsd auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc loop joydev ppdev edac_mce_amd evdev cirrus edac_core sg serio_raw pcspkr ttm drm_kms_helper drm parport_pc parport button hid_generic usbhid hid ext4 crc16 jbd2 crc32c_generic fscrypto ecb glue_helper lrw gf128mul ablk_helper cryptd aes_x86_64 mbcache dm_mod sr_mod cdrom ata_generic xen_blkfront xen_netfront psmouse uhci_hcd ehci_hcd usbcore ata_piix usb_common libata i2c_piix4 scsi_mod floppy ** Network interface configuration: # This file describes the network interfaces available on your system # and how to activate them. For more information, see interfaces(5). # The loopback network interface auto lo iface lo inet loopback auto eth0 eth1 iface eth0 inet static address 149.156.123.195 netmask 255.255.255.192 network 149.156.123.192 broadcast 149.156.123.255 gateway 149.156.123.254 iface eth0 inet static address 149.156.123.196 netmask 255.255.255.255 iface eth0 inet6 static address 2001:06d8:10:1128::28c3 netmask 64 gateway 2001:06d8:10:1128::28fe iface eth1 inet static address 10.156.10.18 netmask 255.255.255.0 network 10.156.10.0 broadcast 10.156.10.255 ** Network status: *** IP interfaces and addresses: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1 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 1500 qdisc mq state UP group default qlen 1000 link/ether 42:f9:dc:ce:37:f8 brd ff:ff:ff:ff:ff:ff inet 149.156.123.195/26 brd 149.156.123.255 scope global eth0 valid_lft forever preferred_lft forever inet 149.156.123.196/32 brd 149.156.123.196 scope global eth0 valid_lft forever preferred_lft forever inet6 2001:6d8:10:1128::28c3/64 scope global valid_lft forever preferred_lft forever inet6 fe80::40f9:dcff:fece:37f8/64 scope link valid_lft forever preferred_lft forever 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether de:4a:9f:68:f1:fc brd ff:ff:ff:ff:ff:ff inet 10.156.10.18/24 brd 10.156.10.255 scope global eth1 valid_lft forever preferred_lft forever inet6 fe80::dc4a:9fff:fe68:f1fc/64 scope link valid_lft forever preferred_lft forever 4: tun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 100 link/none inet 10.10.20.1 peer 10.10.20.2/32 scope global tun0 valid_lft forever preferred_lft forever inet6 fe80::cb79:49a:6b7d:957c/64 scope link flags 800 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 tun0: 3754651 40540 0 0 0 0 0 0 13178913 36354 0 0 0 0 0 0 eth0: 322626585 731154 0 0 0 0 0 0 68890831 691786 0 22996 0 0 0 0 lo: 140 2 0 0 0 0 0 0 140 2 0 0 0 0 0 0 eth1: 45972670 650151 0 10665 0 0 0 0 310773972 678401 0 16076 0 0 0 0 *** Protocol statistics: Ip: Forwarding: 1 1345686 total packets received 53 with invalid addresses 1244493 forwarded 0 incoming packets discarded 79116 incoming packets delivered 1319641 requests sent out Icmp: 394 ICMP messages received 0 input ICMP message failed ICMP input histogram: destination unreachable: 10 echo requests: 384 1441 ICMP messages sent 0 ICMP messages failed ICMP output histogram: destination unreachable: 1057 echo replies: 384 IcmpMsg: InType3: 10 InType8: 384 OutType0: 384 OutType3: 1057 Tcp: 14 active connection openings 4 passive connection openings 0 failed connection attempts 1 connection resets received 2 connections established 4160 segments received 3462 segments sent out 2 segments retransmitted 0 bad segments received 34 resets sent Udp: 75404 packets received 3 packets to unknown port received 0 packet receive errors 71191 packets sent 0 receive buffer errors 0 send buffer errors UdpLite: TcpExt: 4 TCP sockets finished time wait in fast timer 17 delayed acks sent 90 packets directly queued to recvmsg prequeue TCPDirectCopyFromPrequeue: 193105 1128 packet headers predicted 69 packet headers predicted and directly queued to user 336 acknowledgments not containing data payload received 1897 predicted acknowledgments TCPSackRecovery: 1 1 congestion windows fully recovered without slow start 1 fast retransmits TCPLossProbes: 1 TCPDSACKRecv: 2 9 connections reset due to unexpected data 1 connections reset due to early user close TCPSackShiftFallback: 3 TCPRcvCoalesce: 31 TCPOFOQueue: 1 TCPAutoCorking: 794 TCPOrigDataSent: 2625 IpExt: InMcastPkts: 5532 InBcastPkts: 8912 InOctets: 363743906 OutOctets: 719960346 InMcastOctets: 177024 InBcastOctets: 2430927 InNoECTPkts: 1347071 ** 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] Physical Slot: 0 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 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] Physical Slot: 1 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 00:01.1 IDE interface [0101]: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II] [8086:7010] (prog-if 80 [Master]) Subsystem: XenSource, Inc. 82371SB PIIX3 IDE [Natoma/Triton II] [5853:0001] Physical Slot: 1 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: 64 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 c320 [size=16] Kernel driver in use: ata_piix Kernel modules: ata_piix, ata_generic 00:01.2 USB controller [0c03]: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] [8086:7020] (rev 01) (prog-if 00 [UHCI]) Subsystem: XenSource, Inc. 82371SB PIIX3 USB [Natoma/Triton II] [5853:0001] Physical Slot: 1 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: 64 Interrupt: pin D routed to IRQ 23 Region 4: I/O ports at c300 [size=32] Kernel driver in use: uhci_hcd Kernel modules: uhci_hcd 00:01.3 Bridge [0680]: Intel Corporation 82371AB/EB/MB PIIX4 ACPI [8086:7113] (rev 01) Subsystem: Red Hat, Inc Qemu virtual machine [1af4:1100] Physical Slot: 1 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 9 Kernel modules: i2c_piix4 00:02.0 VGA compatible controller [0300]: Cirrus Logic GD 5446 [1013:00b8] (prog-if 00 [VGA controller]) Subsystem: XenSource, Inc. GD 5446 [5853:0001] Physical Slot: 2 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 24 Region 0: Memory at f0000000 (32-bit, prefetchable) [size=32M] Region 1: Memory at f3000000 (32-bit, non-prefetchable) [size=4K] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Kernel driver in use: cirrus Kernel modules: cirrusfb, cirrus 00:03.0 SCSI storage controller [0100]: XenSource, Inc. Xen Platform Device [5853:0001] (rev 01) Subsystem: XenSource, Inc. Xen Platform Device [5853:0001] 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 C routed to IRQ 30 Region 0: I/O ports at c000 [size=256] Region 1: Memory at f2000000 (32-bit, prefetchable) [size=16M] Kernel driver in use: xen-platform-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: 9.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.9.0-7-amd64 (SMP w/2 CPU cores) Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968), LANGUAGE=C (charmap=ANSI_X3.4-1968) Shell: /bin/sh linked to /bin/dash Init: sysvinit (via /sbin/init) Versions of packages linux-image-4.9.0-7-amd64 depends on: ii initramfs-tools [linux-initramfs-tool] 0.130 ii kmod 23-2 ii linux-base 4.5 Versions of packages linux-image-4.9.0-7-amd64 recommends: ii firmware-linux-free 3.4 ii irqbalance 1.1.0-2.3 Versions of packages linux-image-4.9.0-7-amd64 suggests: pn debian-kernel-handbook <none> ii grub-pc 2.02~beta3-5 pn linux-doc-4.9 <none> Versions of packages linux-image-4.9.0-7-amd64 is related to: pn firmware-amd-graphics <none> pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> pn firmware-brcm80211 <none> pn firmware-cavium <none> pn firmware-intel-sound <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux-nonfree <none> pn firmware-misc-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-realtek <none> pn firmware-samsung <none> pn firmware-siano <none> pn firmware-ti-connectivity <none> pn xen-hypervisor <none> -- no debconf information