Впервые за долгое время nginx упал:

содержимое /var/log/messages

[112596.557442] divide error: 0000 [#1] SMP
[112596.557476] last sysfs file: /sys/devices/system/cpu/cpu15/cache/index2/shared_cpu_map
[112596.557523] CPU 7
[112596.557530] Modules linked in: ipt_REDIRECT iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs exportfs reiserfs xt_tcpudp xt_comment xt_multiport iptable_filter ip_tables x_tables joydev usbhid i7core_edac ses power_meter bnx2 psmouse hid dcdbas serio_raw edac_core enclosure hed lp parport shpchp megaraid_sas
[112596.557824]
[112596.557846] Pid: 31233, comm: nginx Not tainted 2.6.35-28-server #50-Ubuntu 0V8X2Y/PowerEdge R410
[112596.557895] RIP: 0010:[<ffffffff81050b4a>] [<ffffffff81050b4a>] find_busiest_group+0x39a/0xa00
[112596.557952] RSP: 0018:ffff88015a70dae8 EFLAGS: 00010046
[112596.557980] RAX: 0000000000000000 RBX: ffff88015a70dce0 RCX: 0000000000000000
[112596.558026] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[112596.558071] RBP: ffff88015a70dc68 R08: ffff880001e705a0 R09: 0000000000000100
[112596.558116] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffff01
[112596.558162] R13: 0000000000015b40 R14: ffffffffffffffff R15: 0000000000000000
[112596.558208] FS: 00007f476c238700(0000) GS:ffff880001e60000(0000) knlGS:0000000000000000
[112596.558256] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[112596.558284] CR2: 00007ffb68f34000 CR3: 000000015a743000 CR4: 00000000000006e0
[112596.558330] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[112596.558375] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[112596.558421] Process nginx (pid: 31233, threadinfo ffff88015a70c000, task ffff8801121a5bc0)
[112596.558468] Stack:
[112596.558489] ffff88015a70dc08 ffff88015a70db78 000000000000024d ffff880001e70420
[112596.558528] <0> ffff88015a70dcd0 0000000000000246 0000000700000000 000000010000000f
[112596.558586] <0> 0000000000000008 ffff880001e70460 0000000000015b40 0000000000015b40
[112596.558660] Call Trace:
[112596.558687] [<ffffffff81057213>] load_balance+0xd3/0x530
[112596.558720] [<ffffffff8159f98c>] schedule+0x67c/0x830
[112596.558749] [<ffffffff8159fea5>] schedule_timeout+0x195/0x310
[112596.558782] [<ffffffff81070a90>] ? process_timeout+0x0/0x10
[112596.558814] [<ffffffff8118e959>] ep_poll+0x179/0x2a0
[112596.558843] [<ffffffff810587f0>] ? default_wake_function+0x0/0x20
[112596.558874] [<ffffffff8118eb45>] sys_epoll_wait+0xc5/0xe0
[112596.558906] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
[112596.558935] Code: 90 8b 48 08 48 8b 00 48 01 ca 48 39 c6 75 f2 41 89 50 08 4c 8b 85 e0 fe ff ff 48 8b 75 a8 31 d2 41 8b 48 08 48 89 f0 48 c1 e0 0a <48> f7 f1 48 8b 4d b0 48 89 45 a0 31 c0 48 85 c9 74 0c 48 8b 45
[112596.559169] RIP [<ffffffff81050b4a>] find_busiest_group+0x39a/0xa00
[112596.559204] RSP <ffff88015a70dae8>
[112596.559567] ---[ end trace 4566ea9790ba3171 ]---
[112596.559594] divide error: 0000 [#2] SMP
[112596.559597] last sysfs file: /sys/devices/system/cpu/cpu15/cache/index2/shared_cpu_map
[112596.559599] CPU 5
[112596.559600] Modules linked in: ipt_REDIRECT iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 btrfs zlib_deflate crc32c libcrc32c ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs exportfs reiserfs xt_tcpudp xt_comment xt_multiport iptable_filter ip_tables x_tables joydev usbhid i7core_edac ses power_meter bnx2 psmouse hid dcdbas serio_raw edac_core enclosure hed lp parport shpchp megaraid_sas
[112596.559623]
[112596.559626] Pid: 31229, comm: nginx Tainted: G D 2.6.35-28-server #50-Ubuntu 0V8X2Y/PowerEdge R410
[112596.559629] RIP: 0010:[<ffffffff81050b4a>] [<ffffffff81050b4a>] find_busiest_group+0x39a/0xa00
[112596.559636] RSP: 0018:ffff88015a613ae8 EFLAGS: 00010046
[112596.559638] RAX: 0000000000000000 RBX: ffff88015a613ce0 RCX: 0000000000000000
[112596.559640] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[112596.559643] RBP: ffff88015a613c68 R08: ffff880001e705a0 R09: 0000000000000100
[112596.559645] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[112596.559647] R13: 0000000000015b40 R14: 0000000000000000 R15: 0000000000000000
[112596.559650] FS: 00007f476c238700(0000) GS:ffff880001e40000(0000) knlGS:0000000000000000
[112596.559653] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[112596.559655] CR2: 00007ffb68f4c000 CR3: 00000001120ae000 CR4: 00000000000006e0
[112596.559658] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[112596.559660] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[112596.559663] Process nginx (pid: 31229, threadinfo ffff88015a612000, task ffff8801121a16f0)
[112596.559664] Stack:
[112596.559666] ffff88015a613c08 ffff88015a613b78 000000000000024d ffff880001e50420
[112596.559669] <0> ffff88015a613cd0 00ff88013c2f68f0 0000000500000000 00000000ffffffff
[112596.559672] <0> 0000000000000008 ffff880001e50460 0000000000015b40 0000000000015b40
[112596.559676] Call Trace:
[112596.559681] [<ffffffff81057213>] load_balance+0xd3/0x530
[112596.559686] [<ffffffff8159f98c>] schedule+0x67c/0x830
[112596.559690] [<ffffffff8159fea5>] schedule_timeout+0x195/0x310
[112596.559695] [<ffffffff81070a90>] ? process_timeout+0x0/0x10
[112596.559699] [<ffffffff8118e959>] ep_poll+0x179/0x2a0
[112596.559702] [<ffffffff810587f0>] ? default_wake_function+0x0/0x20
[112596.559706] [<ffffffff8118eb45>] sys_epoll_wait+0xc5/0xe0
[112596.559711] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
[112596.559713] Code: 90 8b 48 08 48 8b 00 48 01 ca 48 39 c6 75 f2 41 89 50 08 4c 8b 85 e0 fe ff ff 48 8b 75 a8 31 d2 41 8b 48 08 48 89 f0 48 c1 e0 0a <48> f7 f1 48 8b 4d b0 48 89 45 a0 31 c0 48 85 c9 74 0c 48 8b 45
[112596.559736] RIP [<ffffffff81050b4a>] find_busiest_group+0x39a/0xa00
[112596.559741] RSP <ffff88015a613ae8>
[112596.559744] ---[ end trace 4566ea9790ba3172 ]---

nginx -V
nginx: nginx version: nginx/1.0.10
nginx: TLS SNI support enabled
nginx: configure arguments: --prefix=/etc/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-log-path=/var/log/nginx/access.log --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --lock-path=/var/lock/nginx.lock --pid-path=/var/run/nginx.pid --with-debug --with-http_addition_module --with-http_dav_module --with-http_geoip_module --with-http_gzip_static_module --with-http_image_filter_module --with-http_realip_module --with-http_stub_status_module --with-http_ssl_module --with-http_sub_module --with-http_xslt_module --with-ipv6 --with-sha1=/usr/include/openssl --with-md5=/usr/include/openssl --with-mail --with-mail_ssl_module --add-module=/build/buildd/nginx-1.0.10/debian/modules/nginx-echo --add-module=/build/buildd/nginx-1.0.10/debian/modules/nginx-upstream-fair

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