Здравствуйте! Недавно у нас повис шлюз и находящиеся на нём OVZ-контейнеры. Он пинговался, и сквозь него можно было зайти по ssh на одну машину в локальной сети. А в контейнеры и на сам шлюз не получалось. Соответствующий кусок лога: ... Jan 12 13:14:49 gate sshd[16590]: Unknown username from 203.130.198.102 Jan 12 13:14:52 gate sshd[16618]: Unknown username from 203.130.198.102 Jan 12 13:14:55 gate kernel: Unable to handle kernel NULL pointer dereference at 0000000000000010 RIP: Jan 12 13:14:55 gate kernel: [__rb_rotate_left+7/91] __rb_rotate_left+0x7/0x5b Jan 12 13:14:55 gate kernel: [] __rb_rotate_left+0x7/0x5b Jan 12 13:14:55 gate kernel: PGD c3660067 PUD a4748067 PMD 0 Jan 12 13:14:55 gate kernel: Oops: 0000 [340] SMP Jan 12 13:14:55 gate kernel: CPU: 0 Jan 12 13:14:55 gate kernel: Modules linked in: ipt_ULOG ip_gre usblp simfs vznetdev vzethdev vzrst vzcpt vzdquota vzmon vzdev xt_tcpudp ipt_ttl ipt_TCPMSS iptable_mangle ipt_tos ipt_REJECT af_packet ac thermal processor button ide_cd cdrom parport_pc parport floppy psmouse pcspkr sunrpc iptable_nat ip_nat iptable_filter ip_tables x_tables usbhid tg3 ohci_hcd usbcore i2c_amd756 k8temp i2c_amd8111 i2c_core hwmon amd_rng sg dm_mod ip_conntrack_pptp ip_conntrack nfnetlink rtc ext3 jbd mbcache arcmsr sata_sil libata sd_mod scsi_mod ide_disk ide_generic amd74xx generic ide_core Jan 12 13:14:55 gate kernel: Pid: 16667, comm: sshd Not tainted 2.6.18-ovz-smp-alt11 #1 Jan 12 13:14:55 gate kernel: RIP: 0060:[__rb_rotate_left+7/91] [__rb_rotate_left+7/91] __rb_rotate_left+0x7/0x5b Jan 12 13:14:55 gate kernel: RIP: 0060:[] [] __rb_rotate_left+0x7/0x5b Jan 12 13:14:55 gate kernel: RSP: 0068:ffff81009e111df0 EFLAGS: 00010286 Jan 12 13:14:55 gate kernel: RAX: 0000000000000000 RBX: ffff8100cfca7188 RCX: 0000000000000000 Jan 12 13:14:55 gate kernel: RDX: 0000000000000000 RSI: ffffffff8055fa00 RDI: ffff81004d5cb088 Jan 12 13:14:55 gate kernel: RBP: ffff81004d5cb088 R08: ffff81006c9e3088 R09: ffff81009e111c08 Jan 12 13:14:55 gate kernel: R10: 000000001150af17 R11: 00000000c43c0f84 R12: ffff8100cfca7188 Jan 12 13:14:55 gate kernel: R13: ffff81002df1a688 R14: ffffffff8055fa00 R15: 0000000000000021 Jan 12 13:14:55 gate kernel: FS: 00002aaaac3edb00(0000) GS:ffffffff80587000(0000) knlGS:00000000b7ebc6c0 Jan 12 13:14:55 gate kernel: CS: 0060 DS: 0000 ES: 0000 CR0: 0000000080050033 Jan 12 13:14:55 gate kernel: CR2: 0000000000000010 CR3: 00000000a4321000 CR4: 00000000000006e0 Jan 12 13:14:55 gate kernel: Process sshd (pid: 16667, veid=107, threadinfo ffff81009e110000, task ffff8100f3040c10) Jan 12 13:14:55 gate kernel: Stack: ffffffff80211282 ffff8100cfca7198 0000000000000009 ffff81002df1a680 Jan 12 13:14:55 gate kernel: ffff81002df1a680 ffff81009e111ea8 ffffffff803031a3 0000000000000000 Jan 12 13:14:55 gate kernel: 1f3f000000000000 00000065ffffffff ffffffff804bbe60 0000000000000000 Jan 12 13:14:55 gate kernel: Call Trace: Jan 12 13:14:55 gate kernel: [rb_insert_color+178/218] rb_insert_color+0xb2/0xda Jan 12 13:14:55 gate kernel: [] rb_insert_color+0xb2/0xda Jan 12 13:14:55 gate kernel: [key_alloc+626/750] key_alloc+0x272/0x2ee Jan 12 13:14:55 gate kernel: [] key_alloc+0x272/0x2ee Jan 12 13:14:55 gate kernel: [keyring_alloc+41/94] keyring_alloc+0x29/0x5e Jan 12 13:14:55 gate kernel: [] keyring_alloc+0x29/0x5e Jan 12 13:14:55 gate kernel: [alloc_uid_keyring+120/166] alloc_uid_keyring+0x78/0xa6 Jan 12 13:14:55 gate kernel: [] alloc_uid_keyring+0x78/0xa6 Jan 12 13:14:55 gate kernel: [alloc_uid+274/429] alloc_uid+0x112/0x1ad Jan 12 13:14:55 gate kernel: [] alloc_uid+0x112/0x1ad Jan 12 13:14:55 gate kernel: [set_user+15/146] set_user+0xf/0x92 Jan 12 13:14:55 gate kernel: [] set_user+0xf/0x92 Jan 12 13:14:55 gate kernel: [sys_setresuid+321/544] sys_setresuid+0x141/0x220 Jan 12 13:14:55 gate kernel: [] sys_setresuid+0x141/0x220 Jan 12 13:14:55 gate kernel: [system_call+126/131] system_call+0x7e/0x83 Jan 12 13:14:55 gate kernel: [] system_call+0x7e/0x83 Jan 12 13:14:55 gate kernel: DWARF2 unwinder stuck at system_call+0x7e/0x83 Jan 12 13:14:55 gate kernel: Leftover inexact backtrace: Jan 12 13:14:55 gate kernel: Jan 12 13:14:55 gate kernel: Jan 12 13:14:55 gate kernel: Code: 48 8b 51 10 49 83 e0 fc 48 85 d2 48 89 57 08 74 0c 48 8b 02 Jan 12 13:14:55 gate kernel: RIP [__rb_rotate_left+7/91] __rb_rotate_left+0x7/0x5b Jan 12 13:14:55 gate kernel: RIP [] __rb_rotate_left+0x7/0x5b Jan 12 13:14:55 gate kernel: RSP Jan 12 13:14:55 gate kernel: CR2: 0000000000000010 Jan 14 15:24:02 gate syslogd 1.4.1: restart. ... Ядро 2.6.18-ovz-smp-alt11 x86_64 -- Grigory Batalov, ALT Linux Team