[Xen-users] xen kernel problem

[Anand <xen.mails@xxxxxxxxx>]

I just noticed a problem with the -xen kernel i compiled after taking Ian's advise. Using the xen kernel X has stopped working and gives errors.

Here is the /var/log/messages

Jan 25 21:23:13 xen kernel: ------------[ cut here ]------------
Jan 25 21:23:13 xen kernel: kernel BUG at <bad filename>:55531!
Jan 25 21:23:13 xen kernel: invalid operand: 0000 [#1]
Jan 25 21:23:13 xen kernel: SMP
Jan 25 21:23:13 xen kernel: Modules linked in: bridge ipv6 autofs4 sunrpc af_packet binfmt_misc dm_mirror video thermal processor fan button battery ac tsdev evbug evdev usbmouse usbhid md uhci_hcd via_agp agpgart pci_hotplug i2c_viapro i2c_core snd_via82xx gameport snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore 8139too mii floppy unix sd_mod aacraid scsi_mod ext3 jbd dm_mod
Jan 25 21:23:13 xen kernel: CPU:    0
Jan 25 21:23:13 xen kernel: EIP:    0061:[<c010eb52>]    Not tainted VLI
Jan 25 21:23:13 xen kernel: EFLAGS: 00010206   (2.6.12.6-xen)
Jan 25 21:23:13 xen kernel: EIP is at mtrr_add_page+0x72/0x80
Jan 25 21:23:13 xen kernel: eax: 00000003   ebx: ca53de44   ecx: 00000000   edx: 00000001
Jan 25 21:23:13 xen kernel: esi: 000d8000   edi: c6e3a2e0   ebp: 00000020   esp: ca53de44
Jan 25 21:23:13 xen kernel: ds: 007b   es: 007b   ss: 0069
Jan 25 21:23:13 xen kernel: Process X (pid: 6030, threadinfo=ca53c000 task=cc447020)
Jan 25 21:23:13 xen gdm[6029]: gdm_slave_xioerror_handler: Fatal X error - Restarting :0
Jan 25 21:23:13 xen kernel: Stack: 0000001f 03000000 000d8000 00004000 00000001 c0152564 c10cf240 3d92a067
Jan 25 21:23:13 xen kernel:        c6abcb7c b7d74000 c67929cc c10cf240 c10a70e0 00000000 00000100 c01480fc
Jan 25 21:23:13 xen kernel:        00000034 00000001 c5901b9c c01da090 cfd95b60 c590109c ca53deac ca53deb0
Jan 25 21:23:13 xen kernel: Call Trace:
Jan 25 21:23:13 xen kernel:  [<c0152564>] pte_alloc_map+0x44/0x1e0
Jan 25 21:23:13 xen kernel:  [<c01480fc>] free_hot_cold_page+0x5c/0x180
Jan 25 21:23:13 xen kernel:  [<c01da090>] prio_tree_insert+0x90/0x1a0
Jan 25 21:23:13 xen kernel:  [<c0150699>] vma_prio_tree_insert+0x29/0x60
Jan 25 21:23:13 xen kernel:  [<c010ee64>] mtrr_file_add+0x74/0x110
Jan 25 21:23:13 xen kernel:  [<c010f4ee>] mtrr_ioctl+0x25e/0x4f0
Jan 25 21:23:13 xen kernel:  [<c0179090>] do_ioctl+0x70/0xb0
Jan 25 21:23:13 xen kernel:  [<c01792e8>] vfs_ioctl+0xc8/0x200
Jan 25 21:23:13 xen kernel:  [<c01794a8>] sys_ioctl+0x88/0xa0
Jan 25 21:23:13 xen kernel:  [<c010979d>] syscall_call+0x7/0xb
Jan 25 21:23:13 xen kernel: Code: 82 85 c0 74 0a 7f 24 81 c4 90 00 00 00 5b c3 84 d2 74 0c 8b 54 24 18 a1 2c c7 42 c0 ff 04 90 8b 44 24 18 81 c4 90 00 00 00 5b c3 <0f> 0b eb d8 8d 76 00 8d bc 27 00 00 00 00 83 ec 18 89 74 24 14
Jan 25 21:23:15 xen kernel:  <7>evbug.c: Event. Dev: isa0060/serio0/input0, Type: 4, Code: 4, Value: 29
Jan 25 21:23:19 xen kernel: ------------[ cut here ]------------
Jan 25 21:23:19 xen kernel: kernel BUG at <bad filename>:55531!
Jan 25 21:23:19 xen kernel: invalid operand: 0000 [#2]
Jan 25 21:23:19 xen kernel: SMP
Jan 25 21:23:19 xen kernel: Modules linked in: bridge ipv6 autofs4 sunrpc af_packet binfmt_misc dm_mirror video thermal processor fan button battery ac tsdev evbug evdev usbmouse usbhid md uhci_hcd via_agp agpgart pci_hotplug i2c_viapro i2c_core snd_via82xx gameport snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore 8139too mii floppy unix sd_mod aacraid scsi_mod ext3 jbd dm_mod
Jan 25 21:23:19 xen kernel: CPU:    0
Jan 25 21:23:19 xen kernel: EIP:    0061:[<c010eb52>]    Not tainted VLI
Jan 25 21:23:19 xen kernel: EFLAGS: 00010206   (2.6.12.6-xen)
Jan 25 21:23:19 xen kernel: EIP is at mtrr_add_page+0x72/0x80
Jan 25 21:23:19 xen kernel: eax: 00000003   ebx: c595be44   ecx: 00000000   edx: 00000001
Jan 25 21:23:19 xen kernel: esi: 000d8000   edi: c6ae9060   ebp: 00000020   esp: c595be44
Jan 25 21:23:19 xen kernel: ds: 007b   es: 007b   ss: 0069
Jan 25 21:23:19 xen kernel: Process X (pid: 6077, threadinfo=c595a000 task=c58f8570)
Jan 25 21:23:19 xen gdm[6075]: gdm_slave_xioerror_handler: Fatal X error - Restarting :0
Jan 25 21:23:19 xen kernel: Stack: 0000001f 03000000 000d8000 00004000 00000001 c0152564 c10bd700 3d403067
Jan 25 21:23:19 xen kernel:        cb760b7c b7d2e000 c5eb88b4 c10bd700 c10aab80 00000000 00000100 c01480fc
Jan 25 21:23:19 xen kernel:        00000034 00000001 c5901f64 c01da090 cfd95b60 cbb092ac c595beac c595beb0
Jan 25 21:23:19 xen kernel: Call Trace:
Jan 25 21:23:19 xen kernel:  [<c0152564>] pte_alloc_map+0x44/0x1e0
Jan 25 21:23:19 xen kernel:  [<c01480fc>] free_hot_cold_page+0x5c/0x180
Jan 25 21:23:19 xen kernel:  [<c01da090>] prio_tree_insert+0x90/0x1a0
Jan 25 21:23:19 xen kernel:  [<c0150699>] vma_prio_tree_insert+0x29/0x60
Jan 25 21:23:19 xen kernel:  [<c010ee64>] mtrr_file_add+0x74/0x110
Jan 25 21:23:19 xen kernel:  [<c010f4ee>] mtrr_ioctl+0x25e/0x4f0
Jan 25 21:23:19 xen kernel:  [<c010c0ed>] monotonic_clock+0x5d/0xa0
Jan 25 21:23:19 xen kernel:  [<c0179090>] do_ioctl+0x70/0xb0
Jan 25 21:23:19 xen kernel:  [<c01792e8>] vfs_ioctl+0xc8/0x200
Jan 25 21:23:19 xen kernel:  [<c01794a8>] sys_ioctl+0x88/0xa0
Jan 25 21:23:19 xen kernel:  [<c010979d>] syscall_call+0x7/0xb
Jan 25 21:23:19 xen kernel: Code: 82 85 c0 74 0a 7f 24 81 c4 90 00 00 00 5b c3 84 d2 74 0c 8b 54 24 18 a1 2c c7 42 c0 ff 04 90 8b 44 24 18 81 c4 90 00 00 00 5b c3 <0f> 0b eb d8 8d 76 00 8d bc 27 00 00 00 00 83 ec 18 89 74 24 14
Jan 25 21:23:20 xen kernel:  <7>evbug.c: Event. Dev: isa0060/serio0/input0, Type: 4, Code: 4, Value: 29
Jan 25 21:23:24 xen kernel: ------------[ cut here ]------------
Jan 25 21:23:24 xen kernel: kernel BUG at <bad filename>:55531!
Jan 25 21:23:24 xen kernel: invalid operand: 0000 [#3]
Jan 25 21:23:24 xen kernel: SMP
Jan 25 21:23:24 xen kernel: Modules linked in: bridge ipv6 autofs4 sunrpc af_packet binfmt_misc dm_mirror video thermal processor fan button battery ac tsdev evbug evdev usbmouse usbhid md uhci_hcd via_agp agpgart pci_hotplug i2c_viapro i2c_core snd_via82xx gameport snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore 8139too mii floppy unix sd_mod aacraid scsi_mod ext3 jbd dm_mod
Jan 25 21:23:24 xen kernel: CPU:    0
Jan 25 21:23:24 xen kernel: EIP:    0061:[<c010eb52>]    Not tainted VLI
Jan 25 21:23:24 xen kernel: EFLAGS: 00010206   (2.6.12.6-xen)
Jan 25 21:23:24 xen kernel: EIP is at mtrr_add_page+0x72/0x80
Jan 25 21:23:24 xen kernel: eax: 00000003   ebx: c595be44   ecx: 00000000   edx: 00000001
Jan 25 21:23:24 xen kernel: esi: 000d8000   edi: c6ae9060   ebp: 00000020   esp: c595be44
Jan 25 21:23:24 xen kernel: ds: 007b   es: 007b   ss: 0069
Jan 25 21:23:24 xen kernel: Process X (pid: 6167, threadinfo=c595a000 task=c58f8570)
Jan 25 21:23:24 xen gdm[6166]: gdm_slave_xioerror_handler: Fatal X error - Restarting :0
Jan 25 21:23:24 xen kernel: Stack: 0000001f 03000000 000d8000 00004000 00000001 c0152564 c10cf7a0 3d0b7067
Jan 25 21:23:24 xen gdm[5999]: deal_with_x_crashes: Running the XKeepsCrashing script
Jan 25 21:23:24 xen kernel:        ca903b7c b7db7000 c67bdad8 c10cf7a0 c109daa0 00000000 00000100 c01480fc
Jan 25 21:23:24 xen kernel:        00000034 00000001 c5300dac c01da090 cfd95b60 c5300eb4 c595beac c595beb0
Jan 25 21:23:24 xen kernel: Call Trace:
Jan 25 21:23:24 xen kernel:  [<c0152564>] pte_alloc_map+0x44/0x1e0
Jan 25 21:23:24 xen kernel:  [<c01480fc>] free_hot_cold_page+0x5c/0x180
Jan 25 21:23:24 xen kernel:  [<c01da090>] prio_tree_insert+0x90/0x1a0
Jan 25 21:23:24 xen kernel:  [<c0150699>] vma_prio_tree_insert+0x29/0x60
Jan 25 21:23:24 xen gdm[5999]: Failed to start X server several times in a short time period; disabling display :0
Jan 25 21:23:24 xen kernel:  [<c010ee64>] mtrr_file_add+0x74/0x110
Jan 25 21:23:25 xen kernel:  [<c010f4ee>] mtrr_ioctl+0x25e/0x4f0
Jan 25 21:23:25 xen kernel:  [<c0179090>] do_ioctl+0x70/0xb0
Jan 25 21:23:25 xen kernel:  [<c01792e8>] vfs_ioctl+0xc8/0x200
Jan 25 21:23:25 xen kernel:  [<c01794a8>] sys_ioctl+0x88/0xa0
Jan 25 21:23:25 xen kernel:  [<c010979d>] syscall_call+0x7/0xb
Jan 25 21:23:25 xen kernel: Code: 82 85 c0 74 0a 7f 24 81 c4 90 00 00 00 5b c3 84 d2 74 0c 8b 54 24 18 a1 2c c7 42 c0 ff 04 90 8b 44 24 18 81 c4 90 00 00 00 5b c3 <0f> 0b eb d8 8d 76 00 8d bc 27 00 00 00 00 83 ec 18 89 74 24 14
Jan 25 21:23:26 xen kernel:  <7>evbug.c: Event. Dev: isa0060/serio0/input0, Type: 4, Code: 4, Value: 59

The last line of the log file is continously displayed on the screen and no matter what i do, it just keeps on repeating with every new keypress.

The only solution is to reboot the system in runlevel 3.

The kernel was compiled with default config options, apart from X rest everything seems working normal.

Any help would be appreciated.
-- 

regards,

Anand
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