Bug 520620 - BUG: unable to handle kernel paging request at 6b6b6b8b
Summary: BUG: unable to handle kernel paging request at 6b6b6b8b
Keywords:
Status: CLOSED DUPLICATE of bug 577968
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: 12
Hardware: i686
OS: Linux
low
medium
Target Milestone: ---
Assignee: Kernel Maintainer List
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-09-01 13:22 UTC by John Reiser
Modified: 2011-01-21 19:12 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2010-11-05 00:26:21 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
.jpeg photograph of console BUG message with traceback, etc. (320.95 KB, image/jpeg)
2009-09-01 13:22 UTC, John Reiser
no flags Details

Description John Reiser 2009-09-01 13:22:13 UTC
Created attachment 359389 [details]
.jpeg photograph of console BUG message with traceback, etc.

Description of problem: kernel complains when an external firewire drive is turned off during "rebooting system"


Version-Release number of selected component (if applicable):
kernel-2.6.31-0.125.4.2.rc5.git2.fc12.i686   Fedora 12 Alpha

How reproducible:


Steps to Reproduce:
1. boot from DVD for install (basic video driver); turn on external firewire harddrive during "Loading kernel ...  Loading initrd ..."
2. mistakenly start media check
3. switch to VT2, give "reboot" command to shell, turn off external firewire harddrive
  
Actual results: BUG: unable to handle kernel paging request at 6b6b6b8b


Expected results: no BUG


Additional info:  This is an Apple Macintosh Mini i686 only, and life is primitive.  There is no serial port (no hardware) and no netconsole (no kernel module, courtesy of anaconda.)  Also the system was trying to shutdown for reboot, so almost everything is gone.  A photo of the VGA console was all I could get.

Comment 1 Stefan Richter 2009-10-15 19:54:39 UTC
I may be biased, but the bug is likely somewhere above rather than within the firewire subsystem.  (scsi, block, driver core?)

Comment 2 Bug Zapper 2009-11-16 11:53:21 UTC
This bug appears to have been reported against 'rawhide' during the Fedora 12 development cycle.
Changing version to '12'.

More information and reason for this action is here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Comment 3 Doug Fordham 2010-04-25 13:07:53 UTC
Experienced this recently with Rawhide (FC 14) also. Bug report filed for Rawhide -- Bug 585659.

Description of Problem: Kernel crashes when system is inactive/idle for an unspecified amount of time. Kernel crash requires a reboot to restore full functionality.

Kernel 2.6.34-0.38.rc5.git0.fc14.i686.PAE
Virtual Platform -- Vmware Fusion Mac OSX

How reproducible:


Steps to Reproduce:
1. Allow system to remain inactive for a random length of time.
2. Screensaver is activated

Actual results: BUG: unable to handle kernel paging request at 6b6b6b8b


Expected results: no BUG

Backtrace Provided:

BUG: unable to handle kernel paging request at 6b6b6b6b
IP: [<c05c189b>] cfq_free_io_context+0x13/0x2b
*pdpt = 0000000000c33001 *pde = 0000000000000000 
Oops: 0000 [#3] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:11.0/0000:02:00.0/usb2/devnum
Modules linked in: fuse lp sunrpc ip6t_REJECT nf_conntrack_ipv6 ip6table_filter ip6_tables ipv6 uinput snd_ens1371 gameport snd_rawmidi snd_ac97_codec ac97_bus snd_seq snd_seq_device snd_pcm pcnet32 ppdev parport_pc parport snd_timer mii snd soundcore snd_page_alloc i2c_piix4 i2c_core mptspi mptscsih mptbase scsi_transport_spi [last unloaded: scsi_wait_scan]
Pid: 31844, comm: gzip Tainted: G      D    2.6.34-0.38.rc5.git0.fc14.i686.PAE #1 440BX Desktop Reference Platform/VMware Virtual Platform
EIP: 0060:[<c05c189b>] EFLAGS: 00010202 CPU: 0
EIP is at cfq_free_io_context+0x13/0x2b
EAX: 00000286 EBX: 6b6b6b6b ECX: 00000286 EDX: 0cbf1387
ESI: f1382000 EDI: d05f2f9c EBP: eecc1f30 ESP: eecc1f28
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process gzip (pid: 31844, ti=eecc0000 task=d05f2b40 task.ti=eecc0000)
Stack:
f1382000 d05f2b40 eecc1f3c c05bb0dc f1382000 eecc1f50 c05bb1b1 d05f2b40
 00000012 00000000 eecc1f8c c0445df2 eecc1f74 d05f2d68 d05f2d68 d05f2b38
 00000001 f70e8000 00000000 eecc1f74 eecc1f74 eecc1fb4 eefe3080 d05f2b40
Call Trace:
[<c05bb0dc>] ? put_io_context+0x52/0x7c
[<c05bb1b1>] ? exit_io_context+0x7f/0x8a
[<c0445df2>] ? do_exit+0x652/0x681
[<c0445e88>] ? do_group_exit+0x67/0x8a
[<c0445ec3>] ? sys_exit_group+0x18/0x1c
[<c0408bdf>] ? sysenter_do_call+0x12/0x38
Code: e8 be d1 20 00 8d 43 3c ba b3 18 5c c0 e8 0f 22 ed ff 5b 5b 5e 5f 5d c3 55 89 e5 56 53 0f 1f 44 00 00 8b 58 48 89 c6 85 db 74 14 <8b> 03 0f 18 00 90 8d 53 d4 89 f0 e8 76 ff ff ff 8b 1b eb e8 5b 
EIP: [<c05c189b>] cfq_free_io_context+0x13/0x2b SS:ESP 0068:eecc1f28
CR2: 000000006b6b6b6b

Comment 4 Bug Zapper 2010-11-04 10:16:27 UTC
This message is a reminder that Fedora 12 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 12.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '12'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 12's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 12 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events.  Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

The process we are following is described here: 
http://fedoraproject.org/wiki/BugZappers/HouseKeeping

Comment 5 John Reiser 2010-11-05 00:26:21 UTC
As per Comment #3, bug #585659 seems to be similar enough, and was marked as Duplicate of bug #577968.

*** This bug has been marked as a duplicate of bug 577968 ***

Comment 6 Jeff Moyer 2011-01-21 19:12:27 UTC
The backtrace in comment 3 is different from the one reported.  This bug should be kept re-opened if the reporter still sees the problem, and Doug Fordham should definitely follow 577968


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