Bug#630031: linux-image-2.6.39-2-686-pae: Kernel boots, but dmesg contains kernel bug trace
Package: linux-2.6
Version: 2.6.39-2
Severity: important
Tags: sid
Kernel would not boot first thing this morning (June 10) but yesterday it
seemed OK after aptitude upgrade. Now after another upgrade it boots, but there
is a bug trace in logs
-- Package-specific info:
** Version:
Linux version 2.6.39-2-686-pae (Debian 2.6.39-2) (ben@decadent.org.uk) (gcc version 4.4.6 (Debian 4.4.6-3) ) #1 SMP Wed Jun 8 11:33:14 UTC 2011
** USB devices:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0930:6545 Toshiba Corp. Kingston DataTraveler 102 Flash Drive / HEMA Flash Drive 2 GB / PNY Attache 4GB Stick
Bus 003 Device 002: ID 04a9:220d Canon, Inc. CanoScan N670U/N676U/LiDE 20
Kernel: Linux 2.6.39-2-686-pae (SMP w/2 CPU cores)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages linux-image-2.6.39-2-686-pae depends on:
ii debconf [debconf-2.0] 1.5.39 Debian configuration management sy
ii initramfs-tools [linux-initra 0.99 tools for generating an initramfs
ii linux-base 3.2 Linux image base package
ii module-init-tools 3.16-1 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.39-2-686-pae recommends:
ii firmware-linux-free 3 Binary firmware for various driver
ii libc6-i686 2.13-6 Embedded GNU C Library: Shared lib
Versions of packages linux-image-2.6.39-2-686-pae suggests:
ii grub-pc 1.99-6 GRand Unified Bootloader, version
pn linux-doc-2.6.39 <none> (no description available)
Versions of packages linux-image-2.6.39-2-686-pae is related to:
pn firmware-bnx2 <none> (no description available)
pn firmware-bnx2x <none> (no description available)
pn firmware-ipw2x00 <none> (no description available)
pn firmware-ivtv <none> (no description available)
pn firmware-iwlwifi <none> (no description available)
ii firmware-linux 0.30 Binary firmware for various driver
ii firmware-linux-nonfree 0.30 Binary firmware for various driver
pn firmware-qlogic <none> (no description available)
pn firmware-ralink <none> (no description available)
pn xen-hypervisor <none> (no description available)
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08-24-2011, 11:20 PM
Jonathan Nieder
Bug#630031: linux-image-2.6.39-2-686-pae: Kernel boots, but dmesg contains kernel bug trace
# affects wheezy, too
tags 630031 - sid
quit
Hi Frank,
Frank McCormick wrote:
> Kernel would not boot first thing this morning (June 10) but yesterday it
> seemed OK after aptitude upgrade. Now after another upgrade it boots, but there
> is a bug trace in logs
Thanks for reporting it. Is this reproducible? If so, is the
backtrace the same every time, and what's the latest kernel version
that works and the latest version you've tested that doesn't work?
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08-25-2011, 05:43 AM
Jonathan Nieder
Bug#630031: linux-image-2.6.39-2-686-pae: Kernel boots, but dmesg contains kernel bug trace
Hi Frank,
Frank McCormick wrote:
> Well since then I have never been able to get a PAE kernel to boot so I am
> using the last kernel which will boot --- 2.6.38-2-686 #1 SMP
3.0.0-1-486 should also work, for what it's worth.
> I have pretty much given up on the PAE versions as the developers don't seem
> too interested.
>
> I am running an Intel dual-core cpu 2.8 mhz...with PAE support but
> PAE kernels won't boot.
No, that is obviously interesting. So it seems this is PAE-specific
--- good to know. Could you attach a copy of /proc/cpuinfo and kernel
logs from booting 3.0.0-1-686-pae (which should fail) and 3.0.0-1-486
(which should succeed) from sid?
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08-25-2011, 05:02 PM
Jonathan Nieder
Bug#630031: linux-image-2.6.39-2-686-pae: Kernel boots, but dmesg contains kernel bug trace
Hi again,
Frank McCormick wrote:
> I don't have either of those kernels now. And because I work at home I
> won't have the time to mess around with multiple boots for a while.
>
> Why are you interested? Are you having the same problem or what ?
No, I can't reproduce it myself. A few reasons:
- hearing that someone is "stuck" using a kernel with known security
problems does not leave me very happy. There could be more such
people, and not addressing relevant problems (in package
descriptions or functionality) when they happen would damage the
reputation of Debian and health of the internet;
- I occasionally run into kernel bugs, and I would like not to be
contributing to a trend in which more bugs are reported than the
kernel team is able to promptly deal with:
So it seems worthwhile to understand existing bugs and fix them
or pass them upstream as appropriate.
- I like Debian users.
- The thought of a kernel/hardware combination being buggy in this
way triggers an aesthetic dislike in me. I would be happier
hacking on a platform that behaves reasonably and predictably.
So yes, the kernel producing symptoms of memory corruption when and
only when PAE is enabled seems interesting. Hope that helps, and
sorry we didn't get to this earlier.
Jonathan
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