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Re: [Xen-devel] Kernel panic on Xen virtualisation in Debian



On 18.07.2016 18:44, Andreas Ziegler wrote:

did the information that Ingo provided (i cited his message to the list
below) maybe help in narrowing down the possible issue?

If you need additional information we can try getting it for you, as
Ingo might be able to reproduce the kernel panic, although not reliably.

In the meanwhile, I activated IPv6 again on Tuesday evening and today the server crashed again some minutes ago. Here's the output from netconsole:

Jul 22 10:27:55 31.172.31.251 [171182.273973] BUG: unable to handle kernel
Jul 22 10:27:55 31.172.31.251  at ffff88025b2d0000
Jul 22 10:27:55 31.172.31.251 [171182.274039] IP:
Jul 22 10:27:55 31.172.31.251  [<ffffffff812b7a16>] memcpy+0x6/0x110
Jul 22 10:27:55 31.172.31.251 [171182.274080] PGD 1814067
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.274130] Oops: 0000 [#1]
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.274171] Modules linked in:
Jul 22 10:27:55 31.172.31.251  nls_utf8
Jul 22 10:27:55 31.172.31.251  btrfs
Jul 22 10:27:55 31.172.31.251  xor
Jul 22 10:27:55 31.172.31.251  raid6_pq
Jul 22 10:27:55 31.172.31.251  ufs
Jul 22 10:27:55 31.172.31.251  qnx4
Jul 22 10:27:55 31.172.31.251  hfsplus
Jul 22 10:27:55 31.172.31.251  hfs
Jul 22 10:27:55 31.172.31.251  minix
Jul 22 10:27:55 31.172.31.251  ntfs
Jul 22 10:27:55 31.172.31.251  vfat
Jul 22 10:27:55 31.172.31.251  msdos
Jul 22 10:27:55 31.172.31.251  fat
Jul 22 10:27:55 31.172.31.251  jfs
Jul 22 10:27:55 31.172.31.251  authenc
Jul 22 10:27:55 31.172.31.251  xfrm6_mode_tunnel
Jul 22 10:27:55 31.172.31.251  xfrm4_mode_tunnel
Jul 22 10:27:55 31.172.31.251  xt_physdev
Jul 22 10:27:55 31.172.31.251  xen_netback
Jul 22 10:27:55 31.172.31.251  tun
Jul 22 10:27:55 31.172.31.251  xen_blkback
Jul 22 10:27:55 31.172.31.251  xt_multiport
Jul 22 10:27:55 31.172.31.251  twofish_generic
Jul 22 10:27:55 31.172.31.251  twofish_avx_x86_64
Jul 22 10:27:55 31.172.31.251  twofish_x86_64_3way
Jul 22 10:27:55 31.172.31.251  twofish_x86_64
Jul 22 10:27:55 31.172.31.251  twofish_common
Jul 22 10:27:55 31.172.31.251  serpent_avx_x86_64
Jul 22 10:27:55 31.172.31.251  serpent_sse2_x86_64
Jul 22 10:27:55 31.172.31.251  serpent_generic
Jul 22 10:27:55 31.172.31.251  blowfish_generic
Jul 22 10:27:55 31.172.31.251  blowfish_x86_64
Jul 22 10:27:55 31.172.31.251  blowfish_common
Jul 22 10:27:55 31.172.31.251  cast5_avx_x86_64
Jul 22 10:27:55 31.172.31.251  cast5_generic
Jul 22 10:27:55 31.172.31.251  cast_common
Jul 22 10:27:55 31.172.31.251  seqiv
Jul 22 10:27:55 31.172.31.251  ctr
Jul 22 10:27:55 31.172.31.251  ecb
Jul 22 10:27:55 31.172.31.251  des_generic
Jul 22 10:27:55 31.172.31.251  cbc
Jul 22 10:27:55 31.172.31.251  algif_skcipher
Jul 22 10:27:55 31.172.31.251  camellia_generic
Jul 22 10:27:55 31.172.31.251  camellia_aesni_avx_x86_64
Jul 22 10:27:55 31.172.31.251  camellia_x86_64
Jul 22 10:27:55 31.172.31.251  xts
Jul 22 10:27:55 31.172.31.251  xcbc
Jul 22 10:27:55 31.172.31.251  hmac
Jul 22 10:27:55 31.172.31.251  sha512_ssse3
Jul 22 10:27:55 31.172.31.251  sha512_generic
Jul 22 10:27:55 31.172.31.251  sha256_ssse3
Jul 22 10:27:55 31.172.31.251  sha256_generic
Jul 22 10:27:55 31.172.31.251  md4
Jul 22 10:27:55 31.172.31.251  algif_hash
Jul 22 10:27:55 31.172.31.251  af_alg
Jul 22 10:27:55 31.172.31.251  ipt_ULOG
Jul 22 10:27:55 31.172.31.251  xfrm_user
Jul 22 10:27:55 31.172.31.251  xfrm4_tunnel
Jul 22 10:27:55 31.172.31.251  xen_gntdev
Jul 22 10:27:55 31.172.31.251  tunnel4
Jul 22 10:27:55 31.172.31.251  xen_evtchn
Jul 22 10:27:55 31.172.31.251  xenfs
Jul 22 10:27:55 31.172.31.251  xen_privcmd
Jul 22 10:27:55 31.172.31.251  ipcomp
Jul 22 10:27:55 31.172.31.251  xfrm_ipcomp
Jul 22 10:27:55 31.172.31.251  esp4
Jul 22 10:27:55 31.172.31.251  ah4
Jul 22 10:27:55 31.172.31.251  af_key
Jul 22 10:27:55 31.172.31.251  xfrm_algo
Jul 22 10:27:55 31.172.31.251  ipmi_poweroff
Jul 22 10:27:55 31.172.31.251  video
Jul 22 10:27:55 31.172.31.251  thermal
Jul 22 10:27:55 31.172.31.251  fan
Jul 22 10:27:55 31.172.31.251  ac
Jul 22 10:27:55 31.172.31.251  battery
Jul 22 10:27:55 31.172.31.251  ip6t_REJECT
Jul 22 10:27:55 31.172.31.251  ip6table_filter
Jul 22 10:27:55 31.172.31.251  ip6_tables
Jul 22 10:27:55 31.172.31.251  bridge
Jul 22 10:27:55 31.172.31.251  stp
Jul 22 10:27:55 31.172.31.251  llc
Jul 22 10:27:55 31.172.31.251  ipt_REJECT
Jul 22 10:27:55 31.172.31.251  xt_tcpudp
Jul 22 10:27:55 31.172.31.251  iptable_filter
Jul 22 10:27:55 31.172.31.251  ip_tables
Jul 22 10:27:55 31.172.31.251  x_tables
Jul 22 10:27:55 31.172.31.251  ext4
Jul 22 10:27:55 31.172.31.251  crc16
Jul 22 10:27:55 31.172.31.251  mbcache
Jul 22 10:27:55 31.172.31.251  jbd2
Jul 22 10:27:55 31.172.31.251  fuse
Jul 22 10:27:55 31.172.31.251  ipmi_devintf
Jul 22 10:27:55 31.172.31.251  ipmi_watchdog
Jul 22 10:27:55 31.172.31.251  w83627ehf
Jul 22 10:27:55 31.172.31.251  hwmon_vid
Jul 22 10:27:55 31.172.31.251  nf_conntrack_ipv4
Jul 22 10:27:55 31.172.31.251  nf_defrag_ipv4
Jul 22 10:27:55 31.172.31.251  nf_conntrack
Jul 22 10:27:55 31.172.31.251  loop
Jul 22 10:27:55 31.172.31.251  x86_pkg_temp_thermal
Jul 22 10:27:55 31.172.31.251  intel_powerclamp
Jul 22 10:27:55 31.172.31.251  evdev
Jul 22 10:27:55 31.172.31.251  joydev
Jul 22 10:27:55 31.172.31.251  coretemp
Jul 22 10:27:55 31.172.31.251  crc32_pclmul
Jul 22 10:27:55 31.172.31.251  ttm
Jul 22 10:27:55 31.172.31.251  drm_kms_helper
Jul 22 10:27:55 31.172.31.251  drm
Jul 22 10:27:55 31.172.31.251  aesni_intel
Jul 22 10:27:55 31.172.31.251  serio_raw
Jul 22 10:27:55 31.172.31.251  iTCO_wdt
Jul 22 10:27:55 31.172.31.251  aes_x86_64
Jul 22 10:27:55 31.172.31.251  iTCO_vendor_support
Jul 22 10:27:55 31.172.31.251  lrw
Jul 22 10:27:55 31.172.31.251  gf128mul
Jul 22 10:27:55 31.172.31.251  glue_helper
Jul 22 10:27:55 31.172.31.251  ablk_helper
Jul 22 10:27:55 31.172.31.251  cryptd
Jul 22 10:27:55 31.172.31.251  pcspkr
Jul 22 10:27:55 31.172.31.251  sb_edac
Jul 22 10:27:55 31.172.31.251  tpm_tis
Jul 22 10:27:55 31.172.31.251  edac_core
Jul 22 10:27:55 31.172.31.251  tpm
Jul 22 10:27:55 31.172.31.251  wmi
Jul 22 10:27:55 31.172.31.251  ipmi_si
Jul 22 10:27:55 31.172.31.251  ipmi_msghandler
Jul 22 10:27:55 31.172.31.251  shpchp
Jul 22 10:27:55 31.172.31.251  processor
Jul 22 10:27:55 31.172.31.251  thermal_sys
Jul 22 10:27:55 31.172.31.251  mei_me
Jul 22 10:27:55 31.172.31.251  i2c_i801
Jul 22 10:27:55 31.172.31.251  lpc_ich
Jul 22 10:27:55 31.172.31.251  mfd_core
Jul 22 10:27:55 31.172.31.251  mei
Jul 22 10:27:55 31.172.31.251  ioatdma
Jul 22 10:27:55 31.172.31.251  button
Jul 22 10:27:55 31.172.31.251  xfs
Jul 22 10:27:55 31.172.31.251  libcrc32c
Jul 22 10:27:55 31.172.31.251  dm_mod
Jul 22 10:27:55 31.172.31.251  raid10
Jul 22 10:27:55 31.172.31.251  raid1
Jul 22 10:27:55 31.172.31.251  md_mod
Jul 22 10:27:55 31.172.31.251  usb_storage
Jul 22 10:27:55 31.172.31.251  hid_generic
Jul 22 10:27:55 31.172.31.251  usbhid
Jul 22 10:27:55 31.172.31.251  hid
Jul 22 10:27:55 31.172.31.251  netconsole
Jul 22 10:27:55 31.172.31.251  configfs
Jul 22 10:27:55 31.172.31.251  sg
Jul 22 10:27:55 31.172.31.251  sd_mod
Jul 22 10:27:55 31.172.31.251  crc_t10dif
Jul 22 10:27:55 31.172.31.251  crct10dif_generic
Jul 22 10:27:55 31.172.31.251  crct10dif_pclmul
Jul 22 10:27:55 31.172.31.251  crct10dif_common
Jul 22 10:27:55 31.172.31.251  crc32c_intel
Jul 22 10:27:55 31.172.31.251  ahci
Jul 22 10:27:55 31.172.31.251  libahci
Jul 22 10:27:55 31.172.31.251  psmouse
Jul 22 10:27:55 31.172.31.251  ehci_pci
Jul 22 10:27:55 31.172.31.251  libata
Jul 22 10:27:55 31.172.31.251  ehci_hcd
Jul 22 10:27:55 31.172.31.251  igb
Jul 22 10:27:55 31.172.31.251  scsi_mod
Jul 22 10:27:55 31.172.31.251  usbcore
Jul 22 10:27:55 31.172.31.251  i2c_algo_bit
Jul 22 10:27:55 31.172.31.251  usb_common
Jul 22 10:27:55 31.172.31.251  i2c_core
Jul 22 10:27:55 31.172.31.251  dca
Jul 22 10:27:55 31.172.31.251  ptp
Jul 22 10:27:55 31.172.31.251  pps_core
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.275532] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-4-amd64 #1 Debian 3.16.7-ckt25-2+deb8u3 Jul 22 10:27:55 31.172.31.251 [171182.275584] Hardware name: Supermicro X9SRE/X9SRE-3F/X9SRi/X9SRi-3F/X9SRE/X9SRE-3F/X9SRi/X9SRi-3F, BIOS 3.0a 01/03/2014 Jul 22 10:27:55 31.172.31.251 [171182.275638] task: ffffffff8181a460 ti: ffffffff81800000 task.ti: ffffffff81800000 Jul 22 10:27:55 31.172.31.251 [171182.275685] RIP: e030:[<ffffffff812b7a16>]
Jul 22 10:27:55 31.172.31.251  [<ffffffff812b7a16>] memcpy+0x6/0x110
Jul 22 10:27:55 31.172.31.251 [171182.275737] RSP: e02b:ffff880280e03b58 EFLAGS: 00010286 Jul 22 10:27:55 31.172.31.251 [171182.275770] RAX: ffff88024e0c4070 RBX: ffff880244759c00 RCX: 00000000000002ee Jul 22 10:27:55 31.172.31.251 [171182.275819] RDX: 00000000000004a0 RSI: ffff88025b2d0000 RDI: ffff88024e0c4222 Jul 22 10:27:55 31.172.31.251 [171182.275866] RBP: ffff880280e03c38 R08: 00000000000006c0 R09: ffff88024e0c4062 Jul 22 10:27:55 31.172.31.251 [171182.275913] R10: 0100000000000000 R11: 00000000ef5ffb2e R12: ffff88024eb03d00 Jul 22 10:27:55 31.172.31.251 [171182.275960] R13: ffff88025b2cfe66 R14: ffff88025c4441c0 R15: 00000000000004a8 Jul 22 10:27:55 31.172.31.251 [171182.276010] FS: 0000000000000000(0000) GS:ffff880280e00000(0000) knlGS:ffff880280e00000 Jul 22 10:27:55 31.172.31.251 [171182.276059] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 22 10:27:55 31.172.31.251 [171182.276089] CR2: ffff88025b2d0000 CR3: 000000026c8e1000 CR4: 0000000000042660
Jul 22 10:27:55 31.172.31.251 [171182.281365] Stack:
Jul 22 10:27:55 31.172.31.251 [171182.281391]  ffffffff814d319f
Jul 22 10:27:55 31.172.31.251  ffff880077790000
Jul 22 10:27:55 31.172.31.251  ffff880280e03ba8
Jul 22 10:27:55 31.172.31.251  9401294600a7012a
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.281452]  0100000000000000
Jul 22 10:27:55 31.172.31.251  ffffffff814a000a
Jul 22 10:27:55 31.172.31.251  00000000750c7e90
Jul 22 10:27:55 31.172.31.251  00000000000080fe
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.281514]  1ad902feff7ac40e
Jul 22 10:27:55 31.172.31.251  ffff8800775bb080
Jul 22 10:27:55 31.172.31.251  ffff224afc3e1600
Jul 22 10:27:55 31.172.31.251  ffff88024eb03d00
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.281575] Call Trace:
Jul 22 10:27:55 31.172.31.251 [171182.281601]  <IRQ>
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.281607]
Jul 22 10:27:55 31.172.31.251 [<ffffffff814d319f>] ? ndisc_send_redirect+0x3bf/0x410 Jul 22 10:27:55 31.172.31.251 [171182.281751] [<ffffffff814a000a>] ? reg_vif_xmit+0xca/0xf0 Jul 22 10:27:55 31.172.31.251 [171182.281786] [<ffffffff814bbffc>] ? ip6_forward+0x71c/0x850 Jul 22 10:27:55 31.172.31.251 [171182.281817] [<ffffffff814c9704>] ? ip6_route_input+0xa4/0xd0 Jul 22 10:27:55 31.172.31.251 [171182.281852] [<ffffffff8141eae3>] ? __netif_receive_skb_core+0x543/0x750 Jul 22 10:27:55 31.172.31.251 [171182.281885] [<ffffffff8141ed6f>] ? netif_receive_skb_internal+0x1f/0x80 Jul 22 10:27:55 31.172.31.251 [171182.281930] [<ffffffffa053feb2>] ? br_handle_frame_finish+0x1c2/0x3c0 [bridge] Jul 22 10:27:55 31.172.31.251 [171182.281982] [<ffffffffa05401f7>] ? br_handle_frame+0x147/0x240 [bridge] Jul 22 10:27:55 31.172.31.251 [171182.282014] [<ffffffff8141e764>] ? __netif_receive_skb_core+0x1c4/0x750 Jul 22 10:27:55 31.172.31.251 [171182.282051] [<ffffffff81009f9c>] ? xen_clocksource_get_cycles+0x1c/0x20 Jul 22 10:27:55 31.172.31.251 [171182.282083] [<ffffffff8141ed6f>] ? netif_receive_skb_internal+0x1f/0x80 Jul 22 10:27:55 31.172.31.251 [171182.282122] [<ffffffffa073250f>] ? xenvif_tx_action+0x49f/0x920 [xen_netback] Jul 22 10:27:55 31.172.31.251 [171182.282172] [<ffffffff81362a25>] ? is_xen_swiotlb_buffer+0x75/0x150 Jul 22 10:27:55 31.172.31.251 [171182.282205] [<ffffffffa07352f8>] ? xenvif_poll+0x28/0x70 [xen_netback] Jul 22 10:27:55 31.172.31.251 [171182.282240] [<ffffffff8141f0f0>] ? net_rx_action+0x140/0x240 Jul 22 10:27:55 31.172.31.251 [171182.282275] [<ffffffff8106c621>] ? __do_softirq+0xf1/0x290 Jul 22 10:27:55 31.172.31.251 [171182.282305] [<ffffffff8106c9f5>] ? irq_exit+0x95/0xa0 Jul 22 10:27:55 31.172.31.251 [171182.282337] [<ffffffff81359d75>] ? xen_evtchn_do_upcall+0x35/0x50 Jul 22 10:27:55 31.172.31.251 [171182.282372] [<ffffffff81515e9e>] ? xen_do_hypervisor_callback+0x1e/0x30
Jul 22 10:27:55 31.172.31.251 [171182.282403]  <EOI>
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.282410]
Jul 22 10:27:55 31.172.31.251 [<ffffffff810013aa>] ? xen_hypercall_sched_op+0xa/0x20 Jul 22 10:27:55 31.172.31.251 [171182.282467] [<ffffffff810013aa>] ? xen_hypercall_sched_op+0xa/0x20 Jul 22 10:27:55 31.172.31.251 [171182.282501] [<ffffffff81009e7c>] ? xen_safe_halt+0xc/0x20 Jul 22 10:27:55 31.172.31.251 [171182.282537] [<ffffffff8101c8e9>] ? default_idle+0x19/0xb0 Jul 22 10:27:55 31.172.31.251 [171182.282577] [<ffffffff810a8330>] ? cpu_startup_entry+0x340/0x400 Jul 22 10:27:55 31.172.31.251 [171182.282615] [<ffffffff81903076>] ? start_kernel+0x497/0x4a2 Jul 22 10:27:55 31.172.31.251 [171182.282645] [<ffffffff81902a04>] ? set_init_arg+0x4e/0x4e Jul 22 10:27:55 31.172.31.251 [171182.282678] [<ffffffff81904f63>] ? xen_start_kernel+0x569/0x573
Jul 22 10:27:55 31.172.31.251 [171182.282708] Code:
Jul 22 10:27:55 31.172.31.251  <f3>
Jul 22 10:27:55 31.172.31.251
Jul 22 10:27:55 31.172.31.251 [171182.283036] RIP
Jul 22 10:27:55 31.172.31.251  [<ffffffff812b7a16>] memcpy+0x6/0x110
Jul 22 10:27:55 31.172.31.251 [171182.283068]  RSP <ffff880280e03b58>
Jul 22 10:27:55 31.172.31.251 [171182.283093] CR2: ffff88025b2d0000
Jul 22 10:27:55 31.172.31.251 [171182.283353] ---[ end trace 1af688b6502ee191 ]--- Jul 22 10:27:55 31.172.31.251 [171182.288133] Kernel panic - not syncing: Fatal exception in interrupt Jul 22 10:27:55 31.172.31.251 [171182.293798] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)


--
Ciao...          //        http://blog.windfluechter.net
      Ingo     \X/     XMPP: ij@xxxxxxxxxxxxxxxxxxxxxxxx


gpg pubkey:  http://www.juergensmann.de/ij_public_key.asc

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