linux-kernel - 2.6.24-rc1 and 2.6.24.rc2 hangs while running udev on my laptop

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Date:	Fri, 9 Nov 2007 09:47:02 +0100 
From:	SANGOI DINO LEONARDO <dino.leonardo.sangoi@...ianz.it>
To:	linux-kernel@...r.kernel.org
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Len Brown <len.brown@...el.com>
Subject: 2.6.24-rc1 and 2.6.24.rc2 hangs while running udev on my laptop

Hi,
 
My laptop (an HP nx6125) doesn't boot with kernels 2.6.24-rc1 and
2.6.24.rc2. 
It works fine with 2.6.23 and older.

I seen this bug first while running fedora rawhide, so you can find hardware

info and boot logs at https://bugzilla.redhat.com/show_bug.cgi?id=312201.

I did a git bisect, and got this:

$ git bisect bad
4f86d3a8e297205780cca027e974fd5f81064780 is first bad commit
commit 4f86d3a8e297205780cca027e974fd5f81064780
Author: Len Brown <len.brown@...el.com>
Date:   Wed Oct 3 18:58:00 2007 -0400

    cpuidle: consolidate 2.6.22 cpuidle branch into one patch
[SNIP full commit log]

:040000 040000 fadedf003c64838a73d172d6b7c0046d88dedd5e
ebb8a32b3bc49d731c13f2812148ae553bc1a533 M	arch
:040000 040000 039a15fe07324bb0481eb1006571f6523c56c254
e3251f5abcc19417472488f523da968e37698ddd M	drivers
:040000 040000 89a350e5adc6dfd82adbb9c2f327557cd7a95334
14c738510d6c772e9a8db4bc494ce8fb3434a5fb M	include
:040000 040000 e1d33c4a2558da0fb68f7e98145abf69e885ba94
7987a9110d0749aa7442a3f4c8c6c7d7a3df9426 M	kernel

$ git bisect log
git-bisect start
# bad: [b4f555081fdd27d13e6ff39d455d5aefae9d2c0c] Merge branch 'for-linus'
of git://git.kernel.dk/linux-2.6-block
git-bisect bad b4f555081fdd27d13e6ff39d455d5aefae9d2c0c
# good: [bbf25010f1a6b761914430f5fca081ec8c7accd1] Linux 2.6.23
git-bisect good bbf25010f1a6b761914430f5fca081ec8c7accd1
# good: [1f06862e11f23ebc99438c592be9c92560d78548] rt2x00: Add new rt73usb
USB ID
git-bisect good 1f06862e11f23ebc99438c592be9c92560d78548
# good: [2c6221483169ddd4c04797cd7296ed4fe52fcdd7] Fix discrepancy between
VDSO based gettimeofday() and sys_gettimeofday().
git-bisect good 2c6221483169ddd4c04797cd7296ed4fe52fcdd7
# bad: [56d61a0e26c5a61c66d1ac259a59960295939da9] Merge branch 'for-linus'
of git://git390.osdl.marist.edu/pub/scm/linux-2.6
git-bisect bad 56d61a0e26c5a61c66d1ac259a59960295939da9
# good: [ec2626815bf9a9922e49820b03e670e833f3ca3c] Merge
git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched
git-bisect good ec2626815bf9a9922e49820b03e670e833f3ca3c
# bad: [c00046c279a2521075250fad682ca0acc10d4fd7] Merge
git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial
git-bisect bad c00046c279a2521075250fad682ca0acc10d4fd7
# bad: [e9a404580ccaeb31dd2a976f9929c4f9eb6f3540] nfs: Fix build break with
CONFIG_NFS_V4=n
git-bisect bad e9a404580ccaeb31dd2a976f9929c4f9eb6f3540
# bad: [4800be295c34268fd3211d49828bfaa6bf62867f] Merge
git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild
git-bisect bad 4800be295c34268fd3211d49828bfaa6bf62867f
# good: [a2883dfa2e4a94b24109b2bfe735561e50cc44b4] Pull thermal into release
branch
git-bisect good a2883dfa2e4a94b24109b2bfe735561e50cc44b4
# good: [731aa5fd9971a5163845fbe55de63d686a11da0a] Pull bugzilla-8709 into
release branch
git-bisect good 731aa5fd9971a5163845fbe55de63d686a11da0a
# good: [910b40468a9ce3f2f5d48c5d260329c27d45adb5] kbuild: introduce
cc-cross-prefix
git-bisect good 910b40468a9ce3f2f5d48c5d260329c27d45adb5
# bad: [00a2b433557f10736e8a02de619b3e9052556c12] Pull acpica into test
branch
git-bisect bad 00a2b433557f10736e8a02de619b3e9052556c12
# bad: [de85871a9a53c00cae4c3a70849b5eaad0eb38b2] Pull cpuidle into test
branch
git-bisect bad de85871a9a53c00cae4c3a70849b5eaad0eb38b2
# bad: [e196441bdf2dbf0526b28a6829c39557c236d611] ACPI: cpuidle: port idle
timer suspend/resume workaround to cpuidle
git-bisect bad e196441bdf2dbf0526b28a6829c39557c236d611
# bad: [4f86d3a8e297205780cca027e974fd5f81064780] cpuidle: consolidate
2.6.22 cpuidle branch into one patch
git-bisect bad 4f86d3a8e297205780cca027e974fd5f81064780
--------

Config is taken from Fedora kernel. CONFIG_CPU_IDLE is set to y (tell me if
full config is needed).

If I use 'nolapic' parameter, kernel 2.6.24-rc1 boots fine. 
Setting CONFIG_CPU_IDLE=n also gives me a working kernel.

Ask me if more info is needed (please CC me).

Thanks,

Dino
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