This is a ulsfo upload varnish server. It's depooled, and chasemp had to reboot it (unresponsive) from the console. Appears to be up/ok, but want to wait (for re-crash) and/or dig a bit before repooling.
syslog from crash:
Nov 4 16:51:24 cp4007 kernel: [14602465.718794] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 Nov 4 16:51:24 cp4007 kernel: [14602465.727837] IP: [<ffffffff814900c8>] inet_getpeer+0x58/0x120 Nov 4 16:51:24 cp4007 kernel: [14602465.734450] PGD 0 Nov 4 16:51:24 cp4007 kernel: [14602465.736990] Oops: 0000 [#1] SMP Nov 4 16:51:24 cp4007 kernel: [14602465.740894] Modules linked in: xfrm4_mode_transport seqiv esp6 xfrm6_mode_transport xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key xfrm _algo dm_mod binfmt_misc cpufreq_userspace cpufreq_stats cpufreq_powersave cpufreq_conservative 8021q garp mrp stp llc nfsd auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc x86 _pkg_temp_thermal intel_powerclamp coretemp joydev kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel iTCO_wdt ipmi_devintf hid_generic iTCO_vendor_support evdev dcdbas aesni_intel ttm aes _x86_64 lrw gf128mul drm_kms_helper glue_helper ablk_helper cryptd usbhid drm pcspkr sb_edac i2c_algo_bit hid edac_core i2c_core ipmi_si lpc_ich tpm_tis mfd_core tpm ipmi_msghandler 8250_fint ek acpi_power_meter wmi acpi_pad button mei_me shpchp processor mei thermal_sys autofs4 ext4 crc16 mbcache jbd2 raid1 md_mod sg sd_mod ahci bnx2x ehci_pci libahci ptp ehci_hcd pps_core libata mdio crc32c_generic usbcore scsi_mod crc32c_intel usb_common libcrc32c Nov 4 16:51:24 cp4007 kernel: [14602465.838488] CPU: 4 PID: 20543 Comm: nginx Tainted: G W 3.19.0-1-amd64 #1 Debian 3.19.6-1 Nov 4 16:51:24 cp4007 kernel: [14602465.848966] Hardware name: Dell Inc. PowerEdge R620/0PXXHP, BIOS 1.6.0 03/07/2013 Nov 4 16:51:24 cp4007 kernel: [14602465.857603] task: ffff88194ed81270 ti: ffff8801623dc000 task.ti: ffff8801623dc000 Nov 4 16:51:24 cp4007 kernel: [14602465.866237] RIP: 0010:[<ffffffff814900c8>] [<ffffffff814900c8>] inet_getpeer+0x58/0x120 Nov 4 16:51:24 cp4007 kernel: [14602465.875564] RSP: 0018:ffff8801623df828 EFLAGS: 00010246 Nov 4 16:51:24 cp4007 kernel: [14602465.881777] RAX: 0000000000000000 RBX: 000000000000000a RCX: 0000000000000000 Nov 4 16:51:24 cp4007 kernel: [14602465.890024] RDX: 0000000000000001 RSI: ffff8801623df848 RDI: ffff881810b92198 Nov 4 16:51:24 cp4007 kernel: [14602465.898271] RBP: 000000000a0d76b6 R08: 0000000000000004 R09: 0000000042060126 Nov 4 16:51:24 cp4007 kernel: [14602465.906517] R10: 0000000000000000 R11: 000000000000001c R12: ffff881810b92199 Nov 4 16:51:24 cp4007 kernel: [14602465.914763] R13: ffff8801623dfb84 R14: ffffffff818c9e80 R15: ffff880169154240 Nov 4 16:51:24 cp4007 kernel: [14602465.923009] FS: 00007f9b89d04700(0000) GS:ffff88181fc40000(0000) knlGS:0000000000000000 Nov 4 16:51:24 cp4007 kernel: [14602465.932321] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Nov 4 16:51:24 cp4007 kernel: [14602465.939017] CR2: 0000000000000010 CR3: 000000017967b000 CR4: 00000000000407e0 Nov 4 16:51:24 cp4007 kernel: [14602465.947263] Stack: Nov 4 16:51:24 cp4007 kernel: [14602465.949792] ffffffff818ca3c0 ffff881066875200 ffffffff81677641 ffffffff81508d6c Nov 4 16:51:24 cp4007 kernel: [14602465.958365] 20f7014342060126 f6ba895be9984541 ffff88016915000a ffff880169154240 Nov 4 16:51:24 cp4007 kernel: [14602465.966934] ffff881810b92140 ffff881066875200 ffff880169154240 ffffffff81507f2a Nov 4 16:51:24 cp4007 kernel: [14602465.975510] Call Trace: Nov 4 16:51:24 cp4007 kernel: [14602465.978532] [<ffffffff81508d6c>] ? ipv6_cow_metrics+0xfc/0x160 Nov 4 16:51:24 cp4007 kernel: [14602465.985422] [<ffffffff81507f2a>] ? ip6_rt_copy+0x25a/0x280 Nov 4 16:51:24 cp4007 kernel: [14602465.991925] [<ffffffff815090ee>] ? ip6_pol_route.isra.41+0x2ae/0x410 Nov 4 16:51:24 cp4007 kernel: [14602465.999398] [<ffffffff81509280>] ? ip6_pol_route_input+0x30/0x30 Nov 4 16:51:24 cp4007 kernel: [14602466.006488] [<ffffffff81530e30>] ? fib6_rule_action+0xb0/0x1f0 Nov 4 16:51:24 cp4007 kernel: [14602466.013380] [<ffffffff81474473>] ? fib_rules_lookup+0xe3/0x160 Nov 4 16:51:24 cp4007 kernel: [14602466.020272] [<ffffffff81530fb3>] ? fib6_rule_lookup+0x43/0x80 Nov 4 16:51:24 cp4007 kernel: [14602466.027069] [<ffffffff81509280>] ? ip6_pol_route_input+0x30/0x30 Nov 4 16:51:24 cp4007 kernel: [14602466.034154] [<ffffffff814f8f5b>] ? ip6_dst_lookup_tail+0x27b/0x2a0 Nov 4 16:51:24 cp4007 kernel: [14602466.041444] [<ffffffff81459965>] ? validate_xmit_skb.isra.92.part.93+0x15/0x2f0 Nov 4 16:51:24 cp4007 kernel: [14602466.049982] [<ffffffff814f8fcc>] ? ip6_dst_lookup_flow+0x2c/0x80 Nov 4 16:51:24 cp4007 kernel: [14602466.057070] [<ffffffff81529aae>] ? inet6_csk_route_socket+0x11e/0x180 Nov 4 16:51:24 cp4007 kernel: [14602466.064638] [<ffffffff81529b44>] ? inet6_csk_xmit+0x34/0xc0 Nov 4 16:51:24 cp4007 kernel: [14602466.071239] [<ffffffff814adcb5>] ? tcp_transmit_skb+0x495/0x950 Nov 4 16:51:24 cp4007 kernel: [14602466.078228] [<ffffffff814ae35c>] ? tcp_write_xmit+0x1ec/0xd50 Nov 4 16:51:24 cp4007 kernel: [14602466.085022] [<ffffffff81446900>] ? __alloc_skb+0x50/0x1f0 Nov 4 16:51:24 cp4007 kernel: [14602466.091428] [<ffffffff814af11a>] ? __tcp_push_pending_frames+0x2a/0xc0 Nov 4 16:51:24 cp4007 kernel: [14602466.099093] [<ffffffff814a1ed5>] ? tcp_sendmsg+0x6e5/0xd00 Nov 4 16:51:24 cp4007 kernel: [14602466.105597] [<ffffffff8143ca23>] ? sock_aio_write+0x113/0x130 Nov 4 16:51:24 cp4007 kernel: [14602466.112392] [<ffffffff811be54f>] ? do_sync_write+0x5f/0x90 Nov 4 16:51:24 cp4007 kernel: [14602466.118899] [<ffffffff811bef55>] ? vfs_write+0x175/0x1f0 Nov 4 16:51:24 cp4007 kernel: [14602466.125202] [<ffffffff811bfa22>] ? SyS_write+0x42/0xb0 Nov 4 16:51:24 cp4007 kernel: [14602466.131318] [<ffffffff81203794>] ? SyS_epoll_wait+0xb4/0xe0 Nov 4 16:51:24 cp4007 kernel: [14602466.137919] [<ffffffff8155108d>] ? system_call_fast_compare_end+0xc/0x11 Nov 4 16:51:24 cp4007 kernel: [14602466.145777] Code: 00 eb 12 41 83 eb 01 48 8b 09 74 38 48 81 f9 80 ad 67 81 74 2f 45 31 c0 66 83 fb 02 41 0f 95 c0 31 c0 47 8d 44 40 01 44 8b 0c 86 <44> 8b 54 81 10 45 39 d1 74 26 45 39 ca 77 c9 41 83 eb 01 48 8b Nov 4 16:51:24 cp4007 kernel: [14602466.167649] RIP [<ffffffff814900c8>] inet_getpeer+0x58/0x120 Nov 4 16:51:24 cp4007 kernel: [14602466.174356] RSP <ffff8801623df828> Nov 4 16:51:24 cp4007 kernel: [14602466.178532] CR2: 0000000000000010 Nov 4 16:51:24 cp4007 kernel: [14602466.183229] ---[ end trace 6f405580d850d9ee ]--- [ still other misc normal syslog lines through 16:56:01 - the no data until reboot ]