Re: [PLUG] Kernel BUG?

["Greg Lopp" <lopp@pobox.com>]

On 10/31/07, Mike Leone <turgon@mike-leone.com> wrote:

Can anyone help me decipher this? It happened to me earlier today ...

It happen once?
It bring the system down or just show up in the log?

Debian testing, kernel 2.6.22-7. CPU is a Duron 1.6GHz, so the kernel image
I installed is a K7 one.

Linux mail 2.6.22-2-k7 #1 SMP Fri Aug 31 01:02:37 UTC 2007 i686 GNU/Linux


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> System Events
> =-=-=-=-=-=-=
> Oct 31 13:07:57 mail kernel: BUG: unable to handle kernel paging request at virtual address 5c000060
> Oct 31 13:07:57 mail kernel:  printing eip:
> Oct 31 13:07:57 mail kernel: c018bd95
> Oct 31 13:07:57 mail kernel: *pde = 00000000
> Oct 31 13:07:57 mail kernel: Oops: 0000 [#1]
> Oct 31 13:07:57 mail kernel: SMP
> Oct 31 13:07:57 mail kernel: Modules linked in: iptable_filter ip_tables x_tables ipv6 ext2 dm_snapshot dm_mirror dm_mod nfsd exportfs nfs lockd nfs_acl sunrpc smbfs lp ide_floppy sr_mod tsdev psmouse parport_pc parport analog i2c_sis96x pcspkr serio_raw gameport rtc i2c_core snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_timer snd soundcore shpchp pci_hotplug snd_page_alloc sis_agp agpgart evdev ext3 jbd mbcache ide_cd cdrom ide_disk pata_sis ata_generic libata scsi_mod sis5513 floppy sis900 mii ehci_hcd generic ide_core ohci_hcd usbcore thermal processor fan
> Oct 31 13:07:57 mail kernel: CPU:    0
> Oct 31 13:07:57 mail kernel: EIP:    0060:[<c018bd95>]    Not tainted VLI
> Oct 31 13:07:57 mail kernel: EFLAGS: 00010282   (2.6.22-2-k7 #1)
> Oct 31 13:07:57 mail kernel: EIP is at do_mpage_readpage+0x4b/0x5d2
> Oct 31 13:07:57 mail kernel: eax: 5c000000   ebx: 00000000   ecx: e89656f5   edx: c11488a0
> Oct 31 13:07:57 mail kernel: esi: c11488a0   edi: 00000000   ebp: d5cf9dc0   esp: d5cf9cf4
> Oct 31 13:07:57 mail kernel: ds: 007b   es: 007b   fs: 00d8  gs: 0033  ss: 0068
> Oct 31 13:07:57 mail kernel: Process imapd (pid: 27697, ti=d5cf8000 task=dd79ea50 task.ti=d5cf8000)

Your imap daemon was ....

> Oct 31 13:07:57 mail kernel: Stack: 00000000 00000000 c34b7b98 c5e0db00 e89656f5 d5cf9e00 d5cf9df8 00000001
> Oct 31 13:07:57 mail kernel:        c11488a0 00000000 00000000 5c000000 c34b7b98 c988c3d8 00000000 d5cf9d88
> Oct 31 13:07:57 mail kernel:        0000000d 00000000 03c7d067 b7f27000 d0f1017c 00000000 00000001 c0d5297c
> Oct 31 13:07:57 mail kernel: Call Trace:
> Oct 31 13:07:57 mail kernel:  [<e89656f5>] ext3_get_block+0x0/0xd0 [ext3]

trying to read the (ext3) disk

> Oct 31 13:07:57 mail kernel:  [<c0154be4>] __do_page_cache_readahead+0x8b/0x1fc
> Oct 31 13:07:57 mail kernel:  [<c01792d4>] __d_lookup+0x96/0xd5
> Oct 31 13:07:57 mail kernel:  [<c018c367>] mpage_readpage+0x4b/0x5e
> Oct 31 13:07:57 mail kernel:  [<e89656f5>] ext3_get_block+0x0/0xd0 [ext3]
> Oct 31 13:07:57 mail kernel:  [<c0154da1>] blockable_page_cache_readahead+0x4c/0x9f
> Oct 31 13:07:57 mail kernel:  [<c0154f5f>] page_cache_readahead+0xc7/0x1a5
> Oct 31 13:07:57 mail kernel:  [<c014fc67>] do_generic_mapping_read+0x234/0x47a
> Oct 31 13:07:57 mail kernel:  [<c015188f>] generic_file_aio_read+0x164/0x195
> Oct 31 13:07:57 mail kernel:  [<c014f1ff>] file_read_actor+0x0/0xca
> Oct 31 13:07:57 mail kernel:  [<c016a59c>] do_sync_read+0xc7/0x10a
> Oct 31 13:07:57 mail kernel:  [<c0133399>] autoremove_wake_function+0x0/0x35
> Oct 31 13:07:57 mail kernel:  [<c016d5d6>] sys_fstat64+0x1e/0x23
> Oct 31 13:07:57 mail kernel:  [<c016a4d5>] do_sync_read+0x0/0x10a
> Oct 31 13:07:57 mail kernel:  [<c016ad9e>] vfs_read+0xa6/0x128
> Oct 31 13:07:57 mail kernel:  [<c016b19a>] sys_read+0x41/0x67
> Oct 31 13:07:57 mail kernel:  [<c0103d06>] sysenter_past_esp+0x6b/0xa1
> Oct 31 13:07:57 mail kernel:  =======================
> Oct 31 13:07:57 mail kernel: Code: bc 00 00 00 8b 8c 24 c8 00 00 00 89 54 24 14 8b 54 24 20 8b ac 24 c0 00 00 00 89 44 24 18 89 4c 24 10 8b 42 10 8b 00 89 44 24 2c <8b> 48 60 89 4c 24 30 8b 02 f6 c4 08 0f 85 2e 05 00 00 b9 0c 00
> Oct 31 13:07:57 mail kernel: EIP: [<c018bd95>] do_mpage_readpage+0x4b/0x5d2 SS:ESP 0068:d5cf9cf4

when there was a page access failure in the kernel

> Oct 31 13:08:21 mail imapd: LOGIN FAILED, method=CRAM-MD5, ip=[::ffff:10.0.0.20]
> Oct 31 13:08:26 mail imapd: LOGIN, user=turgon, ip=[::ffff:10.0.0.20 ], port=[50696], protocol=IMAP

resulting in a login failure.


The answer is the same: report the problem to the kernel list

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