Hi all!

This is the first time I'm writing to this mailing list.
I'm not able to reboot the server from terminal. Only manually (it will be
done now).
I'm not able to kill any process.
I saw the following in dmesg:


python[8989]: segfault at 0000000000212ee0 rip 0000000000473497 rsp
00007fff3bd55ff0 error 6
python[16663] general protection rip:445350 rsp:7fff5b567bf8 error:0
----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at mm/rmap.c:522
invalid opcode: 0000 [1] SMP
CPU 1
Modules linked in: ipv6 button ac battery dm_snapshot dm_mirror dm_mod loop
serio_raw snd_hda_intel snd_hda_codec i2c_i801 intel_agp parport_pc parport
psmou
se snd_pcm snd_timer snd soundcore snd_page_alloc i2c_core evdev irtty_sir
sir_dev floppy irda crc_ccitt pcspkr ext3 jbd mbcache ide_cd cdrom sd_mod
ata_piix
libata scsi_mod piix generic ide_core ehci_hcd r8169 uhci_hcd thermal
processor fan
Pid: 16663, comm: python Not tainted 2.6.18-6-amd64 #1
RIP: 0010:[] []
page_remove_rmap+0x13/0x2c
RSP: 0000:ffff81003efbfc30 EFLAGS: 00010286
RAX: 00000000ffffffff RBX: ffff8100ce7342d8 RCX: ffff8100ce734300
RDX: ffff810080abe000 RSI: 0000000000000004 RDI: ffff8100ce7342d8
RBP: 000000008420d020 R08: 0000000000000011 R09: 0000000000000000
R10: ffff8100ce7342d8 R11: 00000000fffffffa R12: 00000000007db000
R13: ffff81002dd90ed8 R14: ffff8100010242a0 R15: 0000000000800000
FS: 0000000000000000(0000) GS:ffff8100cca13ac0(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000863328 CR3: 0000000000201000 CR4: 00000000000006e0
Process python (pid: 16663, threadinfo ffff81003efbe000, task
ffff81006a25b0c0)
Stack: ffffffff80207a3f 0000000000000000 ffff81003efbfd08 ffffffffffffffff
0000000000000000 ffff8100cc886e48 ffff81003efbfd10 0000000000000000
000000013799c500 0000000000873000 ffff810027520000 ffff810027805000
Call Trace:
[] unmap_vmas+0x3f4/0x713
[] exit_mmap+0x76/0xf1
[] mmput+0x28/0x98
[] do_exit+0x220/0x8ae
[] cpuset_exit+0x0/0x6c
[] get_signal_to_deliver+0x46e/0x49d
[] do_signal+0x55/0x751
[] try_to_wake_up+0x3d5/0x3e6
[] signal_wake_up+0x1e/0x2d
[] specific_send_sig_info+0xa1/0xac
[] force_sig_info+0xa7/0xb1
[] do_general_protection+0x8f/0x107
[] retint_signal+0x3d/0x79


Code: 0f 0b 68 47 92 40 80 c2 0a 02 8b 77 18 83 f6 01 83 e6 01 e9
RIP [] page_remove_rmap+0x13/0x2c
RSP
<1>Fixing recursive fault but reboot is needed!
Bad page state in process 'kswapd0'
page:ffff8100ce7342d8 flags:0x0100000000010008 mapping:0000000000000000
mapcount:-1 count:0
Trying to fix it up, but a reboot is needed
Backtrace:

Call Trace:
[] bad_page+0x4e/0x78
[] free_hot_cold_page+0x73/0xff
[] __pagevec_free+0x21/0x2e
[] __pagevec_release_nonlru+0x79/0x86
[] shrink_inactive_list+0x500/0x7e1
[] __pagevec_release+0x19/0x22
[] shrink_active_list+0x45e/0x46c
[] shrink_zone+0xe2/0x107
[] kswapd+0x2f9/0x41b
[] autoremove_wake_function+0x0/0x2e
[] keventd_create_kthread+0x0/0x61
[] kswapd+0x0/0x41b
[] keventd_create_kthread+0x0/0x61
[] kthread+0xd4/0x107
[] child_rip+0xa/0x12
[] keventd_create_kthread+0x0/0x61
[] kthread+0x0/0x107
[] child_rip+0x0/0x12

----------- [cut here ] --------- [please bite here ] ---------
Kernel BUG at mm/rmap.c:522
invalid opcode: 0000 [2] SMP
CPU 0
Modules linked in: ipv6 button ac battery dm_snapshot dm_mirror dm_mod loop
serio_raw snd_hda_intel snd_hda_codec i2c_i801 intel_agp parport_pc parport
psmou
se snd_pcm snd_timer snd soundcore snd_page_alloc i2c_core evdev irtty_sir
sir_dev floppy irda crc_ccitt pcspkr ext3 jbd mbcache ide_cd cdrom sd_mod
ata_piix
libata scsi_mod piix generic ide_core ehci_hcd r8169 uhci_hcd thermal
processor fan
Pid: 8922, comm: python Tainted: G B 2.6.18-6-amd64 #1
RIP: 0010:[] []
page_remove_rmap+0x13/0x2c
RSP: 0018:ffff810078359de0 EFLAGS: 00010286
RAX: 00000000ffffffff RBX: ffff8100ce685578 RCX: ffff8100ce6855a0
RDX: ffff810080ab6000 RSI: 0000000000000004 RDI: ffff8100ce685578
RBP: 0000000081019020 R08: 0000000000000020 R09: 0000000000000000
R10: ffff8100ce685578 R11: 00000000fffffffa R12: 00002aaaab366000
R13: ffff8100b918cb30 R14: ffff81000101c2a0 R15: 00002aaaab400000
FS: 00002b087efa4f60(0000) GS:ffffffff80520000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000846048 CR3: 0000000048f74000 CR4: 00000000000006e0
Process python (pid: 8922, threadinfo ffff810078358000, task
ffff81003c2e3100)
Stack: ffffffff80207a3f 0000000000000000 ffff810078359ec0 00002aaaab73a000
00002aaaab339000 ffff8100639b4a28 ffff810078359ec8 0000000000000000
00000000802289fa 00002aaaab73a000 ffff810048f742a8 ffff8100c1f72550
Call Trace:
[] unmap_vmas+0x3f4/0x713
[] unmap_region+0xb7/0x12a
[] do_munmap+0x1fd/0x27a
[] __down_write_nested+0x12/0x9a
[] sys_munmap+0x40/0x5a
[] system_call+0x7e/0x83


Code: 0f 0b 68 47 92 40 80 c2 0a 02 8b 77 18 83 f6 01 83 e6 01 e9
RIP [] page_remove_rmap+0x13/0x2c
RSP
<0>Bad page state in process 'kswapd0'
page:ffff8100ce685578 flags:0x0100000000010008 mapping:0000000000000000
mapcount:-1 count:0
Trying to fix it up, but a reboot is needed
Backtrace:

Call Trace:
[] bad_page+0x4e/0x78
[] free_hot_cold_page+0x73/0xff
[] __pagevec_free+0x21/0x2e
[] __pagevec_release_nonlru+0x79/0x86
[] shrink_inactive_list+0x500/0x7e1
[] __pagevec_release+0x19/0x22
[] shrink_active_list+0x45e/0x46c
[] shrink_zone+0xe2/0x107
[] kswapd+0x2f9/0x41b
[] autoremove_wake_function+0x0/0x2e
[] keventd_create_kthread+0x0/0x61
[] kswapd+0x0/0x41b
[] keventd_create_kthread+0x0/0x61
[] kthread+0xd4/0x107
[] child_rip+0xa/0x12
[] keventd_create_kthread+0x0/0x61
[] kthread+0x0/0x107
[] child_rip+0x0/0x12

python[11605]: segfault at 00000000003e84a8 rip 0000000000473497 rsp
00007fff6ffdcd90 error 6
munin-graph[21973]: segfault at ffffffffa6f3fcf2 rip 00002b8104251e9a rsp
00007fffa79dd4e0 error 6