Article ID: 120267, created on Feb 21, 2014, last review on May 11, 2014

  • Applies to:
  • Virtuozzo 6.0
  • Virtuozzo containers for Linux
  • Virtuozzo hypervisor

Symptoms

Kernel panic on the server. The following can be found in dmesg:

<4>[317144.725577] general protection fault: 0000 [#1] SMP
<4>[317144.745002] last sysfs file: /sys/devices/system/cpu/online
<4>[317144.765663] CPU 1
<4>[317144.766266] Modules linked in: ipmi_devintf dell_rbu simfs iptable_nat ip6table_filter ip6_tables vzcptpram(U) mpt2sas scsi_transport_sas raid_class mptctl mptbase prl_usb_connect(U) prl_netbridge(U) prl_vtdhook(U) prl_hypervisor(P)(U) ip_vzredir(U) vzredir(U) vzcompat(U) vzrst nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 vznetdev ip6_vzprivnet(U) ip6_vzredir(U) ip6_vznetstat(U) pio_kaio pio_nfs pio_direct pfmt_raw pfmt_ploop1 ploop ip_vzprivnet(U) vziolimit vzsnap(U) vzfs(U) vzdquota vzcpt xt_wdog_tmo nfs lockd fscache auth_rpcgss nfs_acl arptable_filter arp_tables sunrpc nf_conntrack vzlinkdev(U) vzethdev vzevent vzlist(U) vzstat(U) vzmon ip_vznetstat(U) vznetstat(U) vzdev xt_length xt_hl xt_tcpmss xt_TCPMSS xt_multiport xt_limit xt_dscp ipt_REJECT fuse ebt_among ebtable_filter ebtables bridge bonding 8021q garp stp llc ipv6 iptable_filter iptable_mangle ip_tables vfat fat dcdbas microcode power_meter sg shpchp bnx2x mdio sb_edac edac_core iTCO_wdt iTCO_vendor_support ext4 jbd2 mbcache sd_mod crc_t10dif ahci wmi megaraid_sas dm_mirror dm_region_hash dm_log dm_mod [last unloaded: ipmi_devintf]
<4>[317145.158961]
<4>[317145.199309] Pid: 119890, comm: apache2 veid: 5872268 Tainted: P         C ---------------    2.6.32-042stab084.14 #1 042stab084_14 Dell Inc. PowerEdge M620/093MW8
<4>[317145.288609] RIP: 0010:[<ffffffff81287b25>]  [<ffffffff81287b25>] radix_tree_lookup_slot+0x5/0x70
<4>[317145.337230] RSP: 0000:ffff880d15ae1b38  EFLAGS: 00010246
<4>[317145.387721] RAX: 73616c63206e6180 RBX: 73616c63206e6178 RCX: 0000000000000020
<4>[317145.440218] RDX: 616c63206e617073 RSI: 0000000000000000 RDI: 73616c63206e6178
<4>[317145.493928] RBP: ffff880d15ae1b58 R08: 0000000000000000 R09: 0000000000000028
<4>[317145.548104] R10: ffff880fb3677260 R11: 0000000000000000 R12: 0000000000000000
<4>[317145.603124] R13: 0000000000000000 R14: ffff880fb4f92838 R15: 73616c63206e6170
<4>[317145.659283] FS:  00007f7be1e6a740(0000) GS:ffff880850600000(0000) knlGS:0000000000000000
<4>[317145.717440] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[317145.776402] CR2: 00007f9f74ce784b CR3: 0000000c85d2a000 CR4: 00000000000407e0
<4>[317145.837280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<4>[317145.898741] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<4>[317145.960348] Process apache2 (pid: 119890, veid: 5872268, threadinfo ffff880d15ae0000, task ffff880fae95d1f0)
<4>[317146.088356] Stack:
<4>[317146.152881]  ffff880d15ae1b58 ffffffff8112f73e ffff880fab0661c0 ffff880d15ae1c58
<4>[317146.155227] <d> ffff880d15ae1ba8 ffffffff81130937 ffff8806beb09000 ffff880a00000020
<4>[317146.223262] <d> ffff880d15ae1bb8 ffff880fb4f927c0 ffff880d15ae1c58 ffff880fb3677140
<4>[317146.360707] Call Trace:
<4>[317146.429046]  [<ffffffff8112f73e>] ? find_get_page+0x1e/0xa0
<4>[317146.498355]  [<ffffffff81130937>] pick_peer_page+0x87/0x180
<4>[317146.567234]  [<ffffffff81131c3f>] filemap_fault+0x26f/0x5d0
<4>[317146.634807]  [<ffffffff81164ade>] __do_fault+0x7e/0x640
<4>[317146.700532]  [<ffffffff81165199>] handle_pte_fault+0xf9/0x1090
<4>[317146.764807]  [<ffffffffa00b5698>] ? __ext4_journal_stop+0x68/0xa0 [ext4]
<4>[317146.828032]  [<ffffffff81155c80>] ? vma_prio_tree_insert+0x30/0x50
<4>[317146.889865]  [<ffffffff81166366>] handle_mm_fault+0x236/0x320
<4>[317146.950052]  [<ffffffff810473b9>] __do_page_fault+0x139/0x480
<4>[317147.008293]  [<ffffffff8116d4ea>] ? do_mmap_pgoff+0x34a/0x3b0
<4>[317147.064779]  [<ffffffff8151ce6e>] do_page_fault+0x3e/0xa0
<4>[317147.119589]  [<ffffffff8151a235>] page_fault+0x25/0x30
<4>[317147.172606] Code: 91 3e 82 e8 7e 19 01 00 85 c0 74 dc 4c 89 e7 89 45 e8 e8 1f 19 01 00 8b 45 e8 48 83 c4 10 5b 41 5c c9 c3 90 90 90 55 48 8d 47 08 <48> 8b 7f 08 48 89 e5 48 85 ff 74 54 40 f6 c7 01 74 49 48 83 e7
<1>[317147.334459] RIP  [<ffffffff81287b25>] radix_tree_lookup_slot+0x5/0x70
<4>[317147.388974]  RSP <ffff880d15ae1b38>

Cause

The issue is recognized as a product bug with internal ID PSBM-24501.

Resolution

To be fixes in one of the future kernel updates.

Search Words

radix_tree_lookup_slot

general protection fault

a26b38f94253cdfbf1028d72cf3a498b 2897d76d56d2010f4e3a28f864d69223 e8e50b42231236b82df27684e7ec0beb d02f9caf3e11b191a38179103495106f c62e8726973f80975db0531f1ed5c6a2 0dd5b9380c7d4884d77587f3eb0fa8ef

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