Bug#500472: linux-image-2.6.26-1-openvz-amd64: NULL pointer dereference in tcp_v4_send_ack - Debian

This is a discussion on Bug#500472: linux-image-2.6.26-1-openvz-amd64: NULL pointer dereference in tcp_v4_send_ack - Debian ; Package: linux-image-2.6.26-1-openvz-amd64 Version: 2.6.26-5 Severity: important Hi, The machine freezes sometimes, repeatedly and it seems this happens under some network load in a VE. vcfgvalidate is all ok. The fail counts of user beancounters are all 0. Here is the ...

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Thread: Bug#500472: linux-image-2.6.26-1-openvz-amd64: NULL pointer dereference in tcp_v4_send_ack

  1. Bug#500472: linux-image-2.6.26-1-openvz-amd64: NULL pointer dereference in tcp_v4_send_ack

    Package: linux-image-2.6.26-1-openvz-amd64
    Version: 2.6.26-5
    Severity: important

    Hi,

    The machine freezes sometimes, repeatedly and it seems this happens under
    some network load in a VE.

    vcfgvalidate is all ok. The fail counts of user beancounters are all 0.


    Here is the stacktrace. Feel free to ask for more info.

    Alex
    --
    [ 960.532790] BUG: unable to handle kernel NULL pointer dereference at 0000000000000450
    [ 960.532790] IP: [] tcp_v4_send_ack+0x1f6/0x23e
    [ 960.532790] PGD 1a5ec067 PUD 1a801067 PMD 0
    [ 960.532790] Oops: 0000 [1] SMP
    [ 960.532790] CPU: 0
    [ 960.532790] Modules linked in: netconsole configfs i915 drm vzethdev vznetdev simfs vzdquota vzmon vzdev xt_TCPMSS video output ac battery ip6table_filter ip6_tables iptable_raw xt_comment xt_policy ipt_ULOG ipt_TTL ipt_ttl ipt_REJECT ipt_REDIRECT ipt_recent ipt_NETMAP ipt_MASQUERADE ipt_LOG ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE xt_NFLOG xt_multiport xt_MARK xt_mark xt_mac xt_limit xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp xt_conntrack xt_CONNMARK xt_connmark xt_CLASSIFY xt_tcpudp xt_state iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack iptable_mangle nfnetlink iptable_filter ip_tables x_tables ipv6 eeprom cpufreq_ondemand acpi_cpufreq freq_table loop parport_pc i2c_i801 rng_core snd_hda_intel i2c_core parport snd_pcm pcspkr iTCO_wdt snd_timer snd soundcore button snd_page_alloc intel_agp evdev ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod sd_mod ide_cd_mod cdrom ide_disk ata_generic ata_piix 8139too libata scsi_mod dock 8139cp mii r8169 ide_pci_generic piix ide_core thermal processor fan thermal_sys
    [ 960.532790] Pid: 0, comm: swapper Not tainted 2.6.26-1-openvz-amd64 #1 036test001
    [ 960.532790] RIP: 0010:[] [] tcp_v4_send_ack+0x1f6/0x23e
    [ 960.532790] RSP: 0018:ffffffff805d9bf0 EFLAGS: 00010246
    [ 960.532790] RAX: 0000000000000000 RBX: ffff81001a88a980 RCX: 0000000000000020
    [ 960.532790] RDX: ffffffff805d9c40 RSI: ffff81001a88a980 RDI: 0000000000000000
    [ 960.532790] RBP: 0000000000027410 R08: 00000000000016a0 R09: 0000000000027410
    [ 960.532790] R10: 0000000031ff5ed3 R11: 00000000221928fa R12: 0000000000000000
    [ 960.532790] R13: 0000000000000000 R14: ffff81001a88c034 R15: ffff81001a88a980
    [ 960.532790] FS: 0000000000000000(0000) GS:ffffffff80533000(0000) knlGS:0000000000000000
    [ 960.532790] CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b
    [ 960.532790] CR2: 0000000000000450 CR3: 000000001a5e8000 CR4: 00000000000006e0
    [ 960.532790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    [ 960.532790] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    [ 960.532790] Process swapper (pid: 0, veid=0, threadinfo ffffffff8056a000, task ffffffff804ee480)
    [ 960.532790] Stack: 00005000ffffafff ffffffff80423437 31ff5ed30ce25000 a0161080221928fa
    [ 960.532790] 0a08010100000000 107402008d740200 0000000000000000 ffffffff80423437
    [ 960.532790] ffffffff805d9db0 ffffffffa02987ec ffffffff805d9c00 0000000000000020
    [ 960.532790] Call Trace:
    [ 960.532790] [] ? _read_lock_bh+0x9/0x19
    [ 960.532790] [] ? _read_lock_bh+0x9/0x19
    [ 960.532790] [] ? :ip_tables:ipt_do_table+0x515/0x581
    [ 960.532790] [] ? tcp_check_req+0x14a/0x3d8
    [ 960.532790] [] ? tcp_v4_do_rcv+0x387/0x4df
    [ 960.532790] [] ? nf_iterate+0x41/0x7d
    [ 960.532790] [] ? tcp_v4_rcv+0x6f6/0x748
    [ 960.532790] [] ? ip_local_deliver_finish+0x171/0x25f
    [ 960.532790] [] ? ip_rcv_finish+0x3a1/0x3c4
    [ 960.532790] [] ? ip_rcv+0x26e/0x2c3
    [ 960.532790] [] ? netif_receive_skb+0x37b/0x44f
    [ 960.532790] [] ? process_backlog+0x86/0xef
    [ 960.532790] [] ? net_rx_action+0xab/0x1da
    [ 960.532790] [] ? __do_softirq+0x96/0x15c
    [ 960.532790] [] ? call_softirq+0x1c/0x28
    [ 960.532790] [] ? do_softirq+0x3c/0x81
    [ 960.532790] [] ? irq_exit+0x81/0xc5
    [ 960.532790] [] ? do_IRQ+0xb9/0xd9
    [ 960.532790] [] ? mwait_idle+0x0/0x4d
    [ 960.532790] [] ? mwait_idle+0x0/0x4d
    [ 960.532790] [] ? ret_from_intr+0x0/0x19
    [ 960.532790] [] ? lapic_next_event+0x0/0x13
    [ 960.532790] [] ? mwait_idle+0x41/0x4d
    [ 960.532790] [] ? cpu_idle+0x89/0xb3
    [ 960.532790]
    [ 960.532790]
    [ 960.532790] Code: 00 4d 85 e4 89 44 24 60 c7 44 24 64 08 00 00 00 74 09 41 8b 44 24 04 89 44 24 68 48 8b 43 20 8b 4c 24 58 48 8d 54 24 50 48 89 de <48> 8b 80 50 04 00 00 48 8b b8 40 01 00 00 e8 d1 b7 fe ff 65 48
    [ 960.532790] RIP [] tcp_v4_send_ack+0x1f6/0x23e
    [ 960.532790] RSP
    [ 960.532790] CR2: 0000000000000450
    [ 960.532790] ---[ end trace b9ce8b85803028c3 ]---
    [ 960.532790] Kernel panic - not syncing: Aiee, killing interrupt handler!

    -- Package-specific info:
    ** Version:
    Linux version 2.6.26-1-openvz-amd64 (Debian 2.6.26-5) (waldi@debian.org) (gcc version 4.1.3 20080623 (prerelease) (Debian 4.1.2-23)) #1 SMP Wed Sep 10 16:30:00 UTC 2008

    ** Command line:
    root=/dev/hda1 ro

    ** Not tainted

    ** Kernel log:
    [ 1.571113] ata1.00: configured for UDMA/133
    [ 1.964775] isa bounce pool size: 16 pages
    [ 1.964900] scsi 0:0:0:0: Direct-Access ATA ST3160812AS 3.AA PQ: 0 ANSI: 5
    [ 1.972729] ICH7: IDE controller (0x8086:0x27df rev 0x01) at PCI slot 0000:00:1f.1
    [ 1.972729] ACPI: PCI Interrupt 0000:00:1f.1[A] -> GSI 18 (level, low) -> IRQ 18
    [ 1.972729] ICH7: not 100% native mode: will probe irqs later
    [ 1.972729] ide0: BM-DMA at 0xffa0-0xffa7
    [ 1.972729] ide1: BM-DMA at 0xffa8-0xffaf
    [ 1.972729] Probing IDE interface ide0...
    [ 2.256468] hda: Maxtor 6Y080L0, ATA DISK drive
    [ 2.704446] hdb: TSSTcorpDVD-ROM SH-D162C, ATAPI CD/DVD-ROM drive
    [ 2.760812] hda: host max PIO4 wanted PIO255(auto-tune) selected PIO4
    [ 2.760950] hda: UDMA/100 mode selected
    [ 2.761149] hdb: host max PIO4 wanted PIO255(auto-tune) selected PIO4
    [ 2.761277] hdb: UDMA/33 mode selected
    [ 2.761467] Probing IDE interface ide1...
    [ 3.580751] ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
    [ 3.593032] ide1 at 0x170-0x177,0x376 on irq 15
    [ 3.609199] Driver 'sd' needs updating - please use bus_type methods
    [ 3.609199] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
    [ 3.609199] sd 0:0:0:0: [sda] Write Protect is off
    [ 3.609199] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    [ 3.609199] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    [ 3.609199] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
    [ 3.609199] sd 0:0:0:0: [sda] Write Protect is off
    [ 3.609199] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    [ 3.609220] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    [ 3.609275] sda:<6>hda: max request size: 128KiB
    [ 3.618633] hda: 160086528 sectors (81964 MB) w/2048KiB Cache, CHS=65535/16/63
    [ 3.620858] hda: cache flushes supported
    [ 3.620945] hda: hda1 hda2 < unknown partition table
    [ 3.627667] sd 0:0:0:0: [sda] Attached SCSI disk
    [ 3.633225] hda5 >
    [ 3.633225] hdb: ATAPI 48X DVD-ROM drive, 256kB Cache
    [ 3.633225] Uniform CD-ROM driver Revision: 3.20
    [ 3.828207] device-mapper: uevent: version 1.0.3
    [ 3.828207] device-mapper: ioctl: 4.13.0-ioctl (2007-10-18) initialised: dm-devel@redhat.com
    [ 3.955304] PM: Starting manual resume from disk
    [ 3.988229] EXT3-fs: INFO: recovery required on readonly filesystem.
    [ 3.988229] EXT3-fs: write access will be enabled during recovery.
    [ 4.072304] kjournald starting. Commit interval 5 seconds
    [ 4.072387] EXT3-fs: recovery complete.
    [ 4.072387] EXT3-fs: mounted filesystem with ordered data mode.
    [ 5.538702] udevd version 125 started
    [ 5.984416] input: Power Button (FF) as /class/input/input2
    [ 5.996784] agpgart: Detected an Intel 945G Chipset.
    [ 5.997352] agpgart: Detected 48892K stolen memory.
    [ 6.009498] agpgart: AGP aperture is 256M @ 0xe0000000
    [ 6.053573] ACPI: Power Button (FF) [PWRF]
    [ 6.053751] input: Power Button (CM) as /class/input/input3
    [ 6.117714] ACPI: Power Button (CM) [PWRB]
    [ 6.441784] ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 16 (level, low) -> IRQ 16
    [ 6.441784] PCI: Setting latency timer of device 0000:00:1b.0 to 64
    [ 6.473741] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.03 (30-Apr-2008)
    [ 6.473741] iTCO_wdt: Found a ICH7 or ICH7R TCO device (Version=2, TCOBASE=0x0860)
    [ 6.473741] iTCO_wdt: initialized. heartbeat=30 sec (nowayout=0)
    [ 6.627706] input: PC Speaker as /class/input/input4
    [ 6.632990] Error: Driver 'pcspkr' is already registered, aborting...
    [ 6.646535] intel_rng: FWH not detected
    [ 6.682554] ACPI: PCI Interrupt 0000:00:1f.3[B] -> GSI 19 (level, low) -> IRQ 19
    [ 6.706818] pnp: the driver 'parport_pc' has been registered
    [ 6.706842] parport_pc 00:07: reported by Plug and Play ACPI
    [ 6.706932] parport0: PC-style at 0x378, irq 7 [PCSPP,TRISTATE]
    [ 6.803251] parport_pc 00:07: driver attached
    [ 8.193527] EXT3 FS on hda1, internal journal
    [ 9.054543] loop: module loaded
    [ 14.713109] kjournald starting. Commit interval 5 seconds
    [ 14.713109] EXT3 FS on dm-3, internal journal
    [ 14.713109] EXT3-fs: mounted filesystem with ordered data mode.
    [ 14.746406] kjournald starting. Commit interval 5 seconds
    [ 14.754452] EXT3 FS on dm-0, internal journal
    [ 14.754522] EXT3-fs: mounted filesystem with ordered data mode.
    [ 14.773919] kjournald starting. Commit interval 5 seconds
    [ 14.774427] EXT3 FS on dm-1, internal journal
    [ 14.774427] EXT3-fs: mounted filesystem with ordered data mode.
    [ 14.790426] kjournald starting. Commit interval 5 seconds
    [ 14.794387] EXT3 FS on dm-2, internal journal
    [ 14.794387] EXT3-fs: mounted filesystem with ordered data mode.
    [ 14.838399] kjournald starting. Commit interval 5 seconds
    [ 14.838399] EXT3 FS on dm-5, internal journal
    [ 14.838399] EXT3-fs: mounted filesystem with ordered data mode.
    [ 15.126894] Adding 524280k swap on /dev/mapper/maxtor-swap. Priority:-1 extents:1 across:524280k
    [ 17.822520] r8169: eth0: link up
    [ 20.979928] NET: Registered protocol family 10
    [ 21.165889] eth1: link up, 100Mbps, full-duplex, lpa 0x41E1
    [ 21.472123] ip_tables: (C) 2000-2006 Netfilter Core Team
    [ 21.734818] Netfilter messages via NETLINK v0.30.
    [ 21.819832] nf_conntrack version 0.5.0 (3582 buckets, 14328 max)
    [ 22.266641] ctnetlink v0.93: registering with nfnetlink.
    [ 22.489740] ClusterIP Version 0.8 loaded successfully
    [ 25.860782] ip6_tables: (C) 2000-2006 Netfilter Core Team
    [ 30.316659] warning: `vzctl' uses 32-bit capabilities (legacy support in use)
    [ 30.347865] CT: 100: started
    [ 31.230383] eth0: no IPv6 routers present
    [ 31.740026] eth1: no IPv6 routers present
    [ 32.652441] CT: 101: started
    [ 44.284340] [drm] Initialized drm 1.1.0 20060810
    [ 44.332337] ACPI: PCI Interrupt 0000:00:02.0[A] -> GSI 16 (level, low) -> IRQ 16
    [ 44.332337] PCI: Setting latency timer of device 0000:00:02.0 to 64
    [ 44.332337] [drm] Initialized i915 1.6.0 20060119 on minor 0

    ** Loaded modules:
    Module Size Used by
    i915 35200 2
    drm 91360 3 i915
    vzethdev 14592 0
    vznetdev 24456 4
    simfs 8944 2
    vzdquota 42868 2 [permanent]
    vzmon 31248 4 vzethdev,vznetdev
    vzdev 7568 4 vzethdev,vznetdev,vzdquota,vzmon
    xt_TCPMSS 8576 0
    video 24084 0
    output 7808 1 video
    ac 9352 0
    battery 16904 0
    ip6table_filter 8320 1
    ip6_tables 23184 1 ip6table_filter
    iptable_raw 7424 0
    xt_comment 6272 0
    xt_policy 7424 0
    ipt_ULOG 13736 0
    ipt_TTL 6400 0
    ipt_ttl 6144 0
    ipt_REJECT 7552 4
    ipt_REDIRECT 6272 0
    ipt_recent 13208 0
    ipt_NETMAP 6272 0
    ipt_MASQUERADE 6528 1
    ipt_LOG 10372 8
    ipt_ECN 6912 0
    ipt_ecn 6400 0
    ipt_CLUSTERIP 11400 0
    ipt_ah 6144 0
    ipt_addrtype 6912 0
    nf_nat_tftp 6016 0
    nf_nat_snmp_basic 14088 0
    nf_nat_sip 10752 0
    nf_nat_pptp 7552 0
    nf_nat_proto_gre 6916 1 nf_nat_pptp
    nf_nat_irc 6656 0
    nf_nat_h323 11008 0
    nf_nat_ftp 7296 0
    nf_nat_amanda 6400 0
    ts_kmp 6272 5
    nf_conntrack_amanda 8832 1 nf_nat_amanda
    nf_conntrack_tftp 9748 1 nf_nat_tftp
    nf_conntrack_sip 23972 1 nf_nat_sip
    nf_conntrack_proto_sctp 12428 0
    nf_conntrack_pptp 10756 1 nf_nat_pptp
    nf_conntrack_proto_gre 9472 1 nf_conntrack_pptp
    nf_conntrack_netlink 20736 0
    nf_conntrack_netbios_ns 7040 0
    nf_conntrack_irc 10680 1 nf_nat_irc
    nf_conntrack_h323 57168 1 nf_nat_h323
    nf_conntrack_ftp 12728 1 nf_nat_ftp
    xt_tcpmss 6656 0
    xt_pkttype 6272 4
    xt_physdev 6928 0
    xt_owner 7296 0
    xt_NFQUEUE 6400 0
    xt_NFLOG 6400 0
    xt_multiport 7424 4
    xt_MARK 7552 0
    xt_mark 6912 0
    xt_mac 6272 0
    xt_limit 7172 0
    xt_length 6400 0
    xt_iprange 6912 0
    xt_helper 6784 0
    xt_hashlimit 16260 0
    xt_DSCP 7808 0
    xt_dscp 7168 0
    xt_dccp 7312 0
    xt_conntrack 8704 0
    xt_CONNMARK 8192 0
    xt_connmark 7424 0
    xt_CLASSIFY 6272 0
    xt_tcpudp 7680 33
    xt_state 6656 16
    iptable_nat 11652 1
    nf_nat 22548 13 ipt_REDIRECT,ipt_NETMAP,ipt_MASQUERADE,nf_nat_tftp ,nf_nat_sip,nf_nat_pptp,nf_nat_proto_gre,nf_nat_ir c,nf_nat_h323,nf_nat_ftp,nf_nat_amanda,nf_conntrac k_netlink,iptable_nat
    nf_conntrack_ipv4 24608 19 iptable_nat,nf_nat
    nf_conntrack 82432 28 ipt_CLUSTERIP,nf_nat_tftp,nf_nat_snmp_basic,nf_nat _sip,nf_nat_pptp,nf_nat_irc,nf_nat_h323,nf_nat_ftp ,nf_nat_amanda,nf_conntrack_amanda,nf_conntrack_tf tp,nf_conntrack_sip,nf_conntrack_proto_sctp,nf_con ntrack_pptp,nf_conntrack_proto_gre,nf_conntrack_ne tlink,nf_conntrack_netbios_ns,nf_conntrack_irc,nf_ conntrack_h323,nf_conntrack_ftp,xt_helper,xt_connt rack,xt_CONNMARK,xt_connmark,xt_state,iptable_nat, nf_nat,nf_conntrack_ipv4
    iptable_mangle 8704 1
    nfnetlink 8904 1 nf_conntrack_netlink
    iptable_filter 8320 1
    ip_tables 21776 4 iptable_raw,iptable_nat,iptable_mangle,iptable_fil ter
    x_tables 25736 44 xt_TCPMSS,ip6_tables,xt_comment,xt_policy,ipt_ULOG ,ipt_TTL,ipt_ttl,ipt_REJECT,ipt_REDIRECT,ipt_recen t,ipt_NETMAP,ipt_MASQUERADE,ipt_LOG,ipt_ECN,ipt_ec n,ipt_CLUSTERIP,ipt_ah,ipt_addrtype,xt_tcpmss,xt_p kttype,xt_physdev,xt_owner,xt_NFQUEUE,xt_NFLOG,xt_ multiport,xt_MARK,xt_mark,xt_mac,xt_limit,xt_lengt h,xt_iprange,xt_helper,xt_hashlimit,xt_DSCP,xt_dsc p,xt_dccp,xt_conntrack,xt_CONNMARK,xt_connmark,xt_ CLASSIFY,xt_tcpudp,xt_state,iptable_nat,ip_tables
    ipv6 296256 59 vzmon
    eeprom 10640 0
    cpufreq_ondemand 11792 2
    acpi_cpufreq 11792 0
    freq_table 9344 2 cpufreq_ondemand,acpi_cpufreq
    loop 19340 0
    parport_pc 31016 0
    i2c_i801 13596 0
    parport 41776 1 parport_pc
    rng_core 9096 0
    pcspkr 7040 0
    i2c_core 27936 2 eeprom,i2c_i801
    iTCO_wdt 15696 0
    snd_hda_intel 434776 0
    snd_pcm 81928 1 snd_hda_intel
    snd_timer 25744 1 snd_pcm
    snd 63688 3 snd_hda_intel,snd_pcm,snd_timer
    soundcore 12064 1 snd
    intel_agp 31600 1
    button 11680 0
    snd_page_alloc 13072 2 snd_hda_intel,snd_pcm
    evdev 14208 0
    ext3 124432 6
    jbd 51240 1 ext3
    mbcache 12804 1 ext3
    dm_mirror 20608 0
    dm_log 13956 1 dm_mirror
    dm_snapshot 19400 0
    dm_mod 58864 16 dm_mirror,dm_log,dm_snapshot
    ide_cd_mod 36360 0
    cdrom 37928 1 ide_cd_mod
    ide_disk 16512 3
    sd_mod 29376 1
    ata_generic 10116 0
    piix 12424 0 [permanent]
    ata_piix 22660 1
    r8169 31364 0
    libata 165472 2 ata_generic,ata_piix
    scsi_mod 160888 2 sd_mod,libata
    dock 14112 1 libata
    ide_pci_generic 9220 0 [permanent]
    ide_core 128156 4 ide_cd_mod,ide_disk,piix,ide_pci_generic
    8139too 28288 0
    8139cp 23808 0
    mii 9856 2 8139too,8139cp
    thermal 22688 0
    processor 42304 2 acpi_cpufreq,thermal
    fan 9352 0
    thermal_sys 17728 4 video,thermal,processor,fan

    ** PCI devices:
    00:00.0 Host bridge [0600]: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub [8086:2770] (rev 02)
    Subsystem: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub [8086:2770]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0
    Capabilities:
    Kernel driver in use: agpgart-intel
    Kernel modules: intel-agp

    00:02.0 VGA compatible controller [0300]: Intel Corporation 82945G/GZ Integrated Graphics Controller [8086:2772] (rev 02)
    Subsystem: Micro-Star International Co., Ltd. Device [1462:7267]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0
    Interrupt: pin A routed to IRQ 16
    Region 0: Memory at cfe80000 (32-bit, non-prefetchable) [size=512K]
    Region 1: I/O ports at ec00 [size=8]
    Region 2: Memory at e0000000 (32-bit, prefetchable) [size=256M]
    Region 3: Memory at cfe40000 (32-bit, non-prefetchable) [size=256K]
    Capabilities:
    Kernel modules: intelfb

    00:1b.0 Audio device [0403]: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller [8086:27d8] (rev 01)
    Subsystem: Micro-Star International Co., Ltd. Device [1462:7267]
    Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0, Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 16
    Region 0: Memory at cfe3c000 (64-bit, non-prefetchable) [size=16K]
    Capabilities:
    Kernel driver in use: HDA Intel
    Kernel modules: snd-hda-intel

    00:1e.0 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev e1) (prog-if 01)
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
    I/O behind bridge: 0000d000-0000dfff
    Memory behind bridge: cfc00000-cfcfffff
    Prefetchable memory behind bridge: 0000000020000000-00000000200fffff
    Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- BridgeCtl: Parity- SERR+ NoISA- VGA- MAbort- >Reset- FastB2B-
    PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
    Capabilities:

    00:1f.0 ISA bridge [0601]: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge [8086:27b8] (rev 01)
    Subsystem: Micro-Star International Co., Ltd. Device [1462:7267]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- SERR- Latency: 0
    Capabilities:
    Kernel modules: intel-rng, iTCO_wdt

    00:1f.1 IDE interface [0101]: Intel Corporation 82801G (ICH7 Family) IDE Controller [8086:27df] (rev 01) (prog-if 8a [Master SecP PriP])
    Subsystem: Micro-Star International Co., Ltd. Device [1462:7267]
    Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Latency: 0
    Interrupt: pin A routed to IRQ 18
    Region 0: I/O ports at 01f0 [size=8]
    Region 1: I/O ports at 03f4 [size=1]
    Region 2: I/O ports at 0170 [size=8]
    Region 3: I/O ports at 0374 [size=1]
    Region 4: I/O ports at ffa0 [size=16]
    Kernel driver in use: PIIX_IDE
    Kernel modules: ide-pci-generic, piix, ata_generic

    00:1f.2 IDE interface [0101]: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller [8086:27c0] (rev 01) (prog-if 8f [Master SecP SecO PriP PriO])
    Subsystem: Micro-Star International Co., Ltd. Device [1462:7267]
    Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Latency: 0
    Interrupt: pin B routed to IRQ 19
    Region 0: I/O ports at e880 [size=8]
    Region 1: I/O ports at e800 [size=4]
    Region 2: I/O ports at e480 [size=8]
    Region 3: I/O ports at e400 [size=4]
    Region 4: I/O ports at e080 [size=16]
    Capabilities:
    Kernel driver in use: ata_piix
    Kernel modules: ide-pci-generic, ata_piix, ata_generic

    00:1f.3 SMBus [0c05]: Intel Corporation 82801G (ICH7 Family) SMBus Controller [8086:27da] (rev 01)
    Subsystem: Micro-Star International Co., Ltd. Device [1462:7267]
    Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Interrupt: pin B routed to IRQ 19
    Region 4: I/O ports at 0400 [size=32]
    Kernel driver in use: i801_smbus
    Kernel modules: i2c-i801

    01:02.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ [10ec:8139] (rev 10)
    Subsystem: Unex Technology Corp. Device [1429:d010]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Latency: 64 (8000ns min, 16000ns max)
    Interrupt: pin A routed to IRQ 18
    Region 0: I/O ports at d800 [size=256]
    Region 1: Memory at cfcffc00 (32-bit, non-prefetchable) [size=256]
    Capabilities:
    Kernel driver in use: 8139too
    Kernel modules: 8139too, 8139cp

    01:04.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8110SC/8169SC Gigabit Ethernet [10ec:8167] (rev 10)
    Subsystem: Micro-Star International Co., Ltd. Device [1462:267c]
    Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
    Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Latency: 64 (8000ns min, 16000ns max), Cache Line Size: 32 bytes
    Interrupt: pin A routed to IRQ 20
    Region 0: I/O ports at d400 [size=256]
    Region 1: Memory at cfcff800 (32-bit, non-prefetchable) [size=256]
    Expansion ROM at 20000000 [disabled] [size=128K]
    Capabilities:
    Kernel driver in use: r8169
    Kernel modules: r8169



    -- System Information:
    Debian Release: lenny/sid
    APT prefers testing
    APT policy: (500, 'testing')
    Architecture: amd64 (x86_64)

    Kernel: Linux 2.6.26-1-openvz-amd64 (SMP w/2 CPU cores)
    Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
    Shell: /bin/sh linked to /bin/bash

    Versions of packages linux-image-2.6.26-1-openvz-amd64 depends on:
    ii debconf [debconf-2.0] 1.5.22 Debian configuration management sy
    ii initramfs-tools [linux-initra 0.92j tools for generating an initramfs
    ii module-init-tools 3.4-1 tools for managing Linux kernel mo
    ii vzctl 3.0.22-11 server virtualization solution - c

    linux-image-2.6.26-1-openvz-amd64 recommends no packages.

    Versions of packages linux-image-2.6.26-1-openvz-amd64 suggests:
    ii grub 0.97-47 GRand Unified Bootloader (Legacy v
    pn linux-doc-2.6.26 (no description available)

    -- debconf information excluded



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  2. Bug#500472: linux-image-2.6.26-1-openvz-amd64: NULL pointer dereference in tcp_v4_send_ack

    On Sun, Sep 28, 2008 at 05:37:07PM +0200, Alexandre Rossi wrote:
    > The machine freezes sometimes, repeatedly and it seems this happens under
    > some network load in a VE.
    >
    > vcfgvalidate is all ok. The fail counts of user beancounters are all 0.


    I presume the same problem on my server, but I cannot debug it because
    it seems to lock-up hardly, with the console not visible anymore.

    After some quick googling I found an ugly patch on the openvz list:
    http://openvz.org/pipermail/devel/2008-July/013096.html

    It would probably safe the machine from panicing... but not much more...

    Judging for the package the problem may as well be grave..

    Kind regards,
    Philipp Kern




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  3. Bug#500472: marked as done (linux-image-2.6.26-1-openvz-amd64: NULL pointer dereference in tcp_v4_send_ack)


    Your message dated Sat, 18 Oct 2008 14:32:48 +0000
    with message-id
    and subject line Bug#500472: fixed in linux-2.6 2.6.26-9
    has caused the Debian Bug report #500472,
    regarding linux-image-2.6.26-1-openvz-amd64: NULL pointer dereference in tcp_v4_send_ack
    to be marked as done.

    This means that you claim that the problem has been dealt with.
    If this is not the case it is now your responsibility to reopen the
    Bug report if necessary, and/or fix the problem forthwith.

    (NB: If you are a system administrator and have no idea what this
    message is talking about, this may indicate a serious mail system
    misconfiguration somewhere. Please contact owner@bugs.debian.org
    immediately.)


    --
    500472: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=500472
    Debian Bug Tracking System
    Contact owner@bugs.debian.org with problems


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