По мотивам этой темы [Debian Lenny] Завис намертво с выхлопом call trace и с наводки AS на netconsole таки поймал выхлоп :)
[151283.116138] BUG: unable to handle kernel paging request at ffffffb6
[151283.116184] IP: [<f7b54a9d>]
[151283.116277] Oops: 0002 [#1] SMP
[151283.116302] Modules linked in: usbip usbip_common_mod ipv6 ext2 netconsole configfs loop evdev snd_mpu401 snd_cs423
2 snd_opl3_lib snd_hwdep snd_cs4231_lib snd_mpu401_uart parport_pc ns558 snd_rawmidi snd_seq_device parport gameport sn
d_pcm snd_timer snd soundcore snd_page_alloc psmouse serio_raw pcspkr button i2c_sis96x i2c_core sis_agp shpchp agpgart
pci_hotplug ext3 jbd mbcache dm_mirror dm_log dm_snapshot dm_mod ide_disk 8139too ata_generic libata scsi_mod dock ehc
i_hcd 8139cp mii ohci_hcd usbcore sis5513 ide_pci_generic ide_core thermal processor fan thermal_sys [last unloaded: sc
si_wait_scan]
[151283.117768]
[151283.117783] Pid: 2270, comm: zabbix_server Not tainted (2.6.26-2-686 #1)
[151283.117804] EIP: 0060:[<f7b54a9d>] EFLAGS: 00210282 CPU: 0
[151283.117881] EIP is at 0xf7b54a9d
[151283.117897] EAX: c029ec79 EBX: 000003f7 ECX: 00000001 EDX: 00000008
[151283.117917] ESI: 00000001 EDI: 00000506 EBP: 00000001 ESP: f6c65d24
[151283.117936] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[151283.118012] Process zabbix_server (pid: 2270, ti=f6c64000 task=f7482da0 task.ti=f6c64000)
[151283.118033] Stack: c028194f 00000000 00000000 00000001 14b84709 149abe4a 14b84721 00000000
[151283.118268] 00000000 00000000 00000000 00000001 00000006 00000001 14b84721 00000000
[151283.118501] 00000001 00008997 00000001 023ff473 00000004 c0365260 f7b48ca0 00000001
[151283.118735] Call Trace:
[151283.118758] [<c028194f>] tcp_ack+0x15ad/0x1740
[151283.118878] [<c0284673>] tcp_rcv_established+0x6ba/0x7af
[151283.118906] [<c02b8ca9>] schedule_timeout+0x13/0x86
[151283.118990] [<c0129c77>] __mod_timer+0x99/0xa3
[151283.119017] [<c02b9d4d>] _spin_lock_bh+0x8/0x1e
[151283.119104] [<c0289536>] tcp_v4_do_rcv+0x262/0x3e8
[151283.119139] [<c0251c2c>] sk_wait_data+0x88/0x97
[151283.119225] [<c01319e4>] autoremove_wake_function+0x0/0x2d
[151283.119258] [<c027b698>] tcp_prequeue_process+0x54/0x67
[151283.119340] [<c027d9b1>] tcp_recvmsg+0x3e3/0x9b8
[151283.119383] [<c0250e71>] sock_common_recvmsg+0x2f/0x45
[151283.119474] [<c024f2c6>] sock_aio_read+0xea/0xf8
[151283.119528] [<c01745d6>] do_sync_read+0xbf/0xfe
[151283.119629] [<c01319e4>] autoremove_wake_function+0x0/0x2d
[151283.119662] [<c024f55d>] sock_attach_fd+0x65/0x92
[151283.119751] [<c024f5cb>] sock_map_fd+0x41/0x4a
[151283.119774] [<c01bac33>] security_file_permission+0xc/0xd
[151283.119864] [<c0174d77>] vfs_read+0x92/0x11e
[151283.119893] [<c01751b7>] sys_read+0x3c/0x63
[151283.119980] [<c0103857>] sysenter_past_esp+0x78/0xb1
[151283.120011] =======================
[151283.120011] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 02 00 01 00 00 00 00 00 00 00 00 00 40 80 68 f7 00 00 0
0 00 70 96 bb f7 03 00 00 00 08 <10> 5d b5 a0 52 36 c0 00 06 01 00 d0 55 01 00 0e 0e 00 00 01 00
[151283.120011] EIP: [<f7b54a9d>] 0xf7b54a9d SS:ESP 0068:f6c65d24
[151283.120011] Kernel panic - not syncing: Fatal exception in interrupt
Debian Lenny, zabbix из тестинга (надо было из бэкпортов ставить), но сервак не критический, а тестовый скорее, так что не страшно, но хотелось бы разобраться, почему так происходит :)
P.S.: полез на багтрекер debian и в гугл :)