Re: [Bugme-new] [Bug 8392] New: Hard Lock Subsequent to Boot

Re: [Bugme-new] [Bug 8392] New: Hard Lock Subsequent to Boot

[Andrew Morton]

(please reply via email, retaining all cc's)

On Sat, 28 Apr 2007 09:34:43 -0700 bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=8392
> 
>            Summary: Hard Lock Subsequent to Boot
>     Kernel Version: 2.6.21/2,6,21.1
>             Status: NEW
>           Severity: blocking
>              Owner: other_other@kernel-bugs.osdl.org
>          Submitter: davidhart@tqmcube.com
> 
> 
> Most recent kernel where this bug did *NOT* occur:
> 2.6.20.8
> 
> Distribution:
> Fedora Core 6
> 
> Hardware Environment:
> Sony Vaio 2.4gh/512 mb
> 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 645xx (rev 03)
> 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SG86C202
> 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS963 [MuTIOL Media IO]
> (rev 14)
> 00:02.1 SMBus: Silicon Integrated Systems [SiS] SiS961/2 SMBus Controller
> 00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE]
> 00:02.6 Modem: Silicon Integrated Systems [SiS] AC'97 Modem Controller (rev a0)
> 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97
> Sound Controller (rev a0)
> 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f)
> 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f)
> 00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 0f)
> 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
> 00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast
> Ethernet (rev 90)
> 00:07.0 Ethernet controller: Atheros Communications, Inc. AR5212 802.11abg NIC
> (rev 01)
> 00:0a.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev aa)
> 00:0a.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev aa)
> 00:0a.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 02)
> 01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 420 Go]
> (rev a3)
> Software Environment:
> 
> KDE.
> Kernel compiled with full debugging
> Standard nv driver - NOT nvidia.
> 
> Problem Description:
> 
> Kernel boots. X starts. Hard lock occurs immediately on launching an
> application. Complete freeze  stops logging (no panic or error messages. No
> debug information whatsoever. Neither SysReq nor alt-ctl-del are responsive.
> 
> Steps to reproduce:
> 
> Boot into X. Launch any application (web, mail client, etc).

Lovely regression.

If you have time, there are a couple of things to do here:

1: Watch virtual terminal #1 while starting that appliction.  ie: in an
   xterm (assuming you can open one) do

	sleep 5; mozilla

   then do a quick alt-shift-F1 before the sleep expires.  See if
   anything comes up on the console.

2: get netconsole working: see Documentation/networking/netconsole.txt

3: Performa a git bisection search, find the buggy patch.  This is quite a
   lot of work, and I hate asking people to do it because we don't (afaik)
   have any particularly good documentation on how to perform it.

Re: [Bugme-new] [Bug 8392] New: Hard Lock Subsequent to Boot

[Adrian Bunk]

On Sat, Apr 28, 2007 at 11:59:06AM -0700, Andrew Morton wrote:
>...
> 3: Performa a git bisection search, find the buggy patch.  This is quite a
>    lot of work, and I hate asking people to do it because we don't (afaik)
>    have any particularly good documentation on how to perform it.


The text I'm using for telling people how to bisect is:

<--  snip  -->

# install git and cogito on your computer

# clone Linus' tree:
cg-clone \ 
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

# start bisecting:
cd linux-2.6
git bisect start
git bisect bad v2.6.21
git bisect good v2.6.20
cp /path/to/.config .

# start a round
make oldconfig
make
# install kernel, check whether it's good or bad, then:
git bisect [bad|good]
# start next round


After at about 12 reboots you'll have found the guilty commit
("...  is first bad commit").


More information on git bisecting:
  man git-bisect

<--  snip  -->


Is this text understandable?

If not, what is missing?


cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

Re: [Bugme-new] [Bug 8392] New: Hard Lock Subsequent to Boot

[Roland Dreier]

 > # install git and cogito on your computer
 > 
 > # clone Linus' tree:
 > cg-clone \ 
 > git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

Why the cogito installation?  It looks like cg-clone is the only
cogito command you use, and git-clone is a trivial replacement.

 - R.