linux-kernel - Re: X freezes kernel during exit [Re: 2.6.23-rc3-mm1]

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Date:	Sun, 09 Sep 2007 13:44:56 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Jiri Slaby <jirislaby@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, gareth@...inux.com,
	dri-devel@...ts.sourceforge.net, airlied@...ux.ie
Subject: Re: X freezes kernel during exit [Re: 2.6.23-rc3-mm1]

On 08/28/2007 01:41 PM, Jiri Slaby wrote:
> Does this went through to your boxes? Any progress, clue, idea?
> 
> Jiri Slaby napsal(a):
>> Andrew Morton napsal(a):
>>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.23-rc3/2.6.23-rc3-mm1/
>> Hi,
>>
>> I've found a regression against 2.6.23-rc2-mm2. X server shutdown freezes
>> (untainted) kernel hardly. Nothing on netconsole, X output follows:
>>
>>
>> X Window System Version 1.3.0
>> Release Date: 19 April 2007
>> X Protocol Version 11, Revision 0, Release 1.3
>> Build Operating System: Fedora Core 7 Red Hat, Inc.
>> Current Operating System: Linux bellona 2.6.23-rc3-mm1 #315 SMP Wed Aug 22
>> 21:43:06 CEST 2007 i686
>> Build Date: 11 June 2007
>> Build ID: xorg-x11-server 1.3.0.0-9.fc7
>>         Before reporting problems, check http://wiki.x.org
>>         to make sure that you have the latest version.
>> Module Loader present
>> Markers: (--) probed, (**) from config file, (==) default setting,
>>         (++) from command line, (!!) notice, (II) informational,
>>         (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
>> (==) Log file: "/var/log/Xorg.0.log", Time: Sun Aug 26 14:22:43 2007
>> (==) Using config file: "/etc/X11/xorg.conf"
>> (WW) RADEON: No matching Device section for instance (BusID PCI:1:0:1) found
>> (**) RADEON(0): RADEONPreInit
>> (II) Module already built-in
>> (II) Module already built-in
>> (II) Module already built-in
>> (**) RADEON(0): RADEONScreenInit f0000000 0
>> (**) RADEON(0): Map: 0xf0000000, 0x04000000
>> (**) RADEON(0): RADEONSave
>> (**) RADEON(0): RADEONSaveMode(0x8240870)
>> (**) RADEON(0): Read: 0x0000000c 0x00030065 0x00000000
>> (**) RADEON(0): Read: rd=12, fd=101, pd=3
>> (**) RADEON(0): RADEONSaveMode returns 0x8240870
>> (**) RADEON(0): DRI New memory map param
>> (**) RADEON(0): RADEONInitMemoryMap() :
>> (**) RADEON(0):   mem_size         : 0x04000000
>> (**) RADEON(0):   MC_FB_LOCATION   : 0xf3fff000
>> (**) RADEON(0):   MC_AGP_LOCATION  : 0xffffffc0
>> (**) RADEON(0): RADEONModeInit()
>> 1280x1024     108.00  1280 1328 1440 1688  1024 1025 1028 1066 (24,32) +H +V
>> 1280x1024     108.00  1280 1328 1440 1688  1024 1025 1028 1066 (24,32) +H +V
>> (**) RADEON(0): Pitch = 10485920 bytes (virtualX = 1280, displayWidth = 1280)
>> (**) RADEON(0): dc=10800, of=21600, fd=96, pd=2
>> (**) RADEON(0): RADEONInit returns 0x8241220
>> (**) RADEON(0): RADEONRestoreMode()
>> (**) RADEON(0): RADEONRestoreMode(0x8241220)
>> (**) RADEON(0): RADEONRestoreMemMapRegisters() :
>> (**) RADEON(0):   MC_FB_LOCATION   : 0xf3fff000
>> (**) RADEON(0):   MC_AGP_LOCATION  : 0xffffffc0
>> (**) RADEON(0):   Map Changed ! Applying ...
>> (**) RADEON(0):   Map applied, resetting engine ...
>> (**) RADEON(0): Updating display base addresses...
>> (**) RADEON(0): Memory map updated.
>> (**) RADEON(0): Programming CRTC1, offset: 0x00000000
>> (**) RADEON(0): Wrote: 0x0000000c 0x00010060 0x00000000 (0x0000a400)
>> (**) RADEON(0): Wrote: rd=12, fd=96, pd=1
>> (**) RADEON(0): GRPH_BUFFER_CNTL from 20205c5c to 20125c5c
>> (**) RADEON(0): RADEONSaveScreen(0)
>> (**) RADEON(0): Setting up initial surfaces
>> (**) RADEON(0): Initializing fb layer
>> (**) RADEON(0): Setting up accel memmap
>> (**) RADEON(0): Initializing backing store
>> (**) RADEON(0): DRI Finishing init !
>> (**) RADEON(0): EngineRestore (32/32)
>> (**) RADEON(0): GRPH_BUFFER_CNTL from 20205c5c to 20125c5c
>> (**) RADEON(0): Setting up final surfaces
>> (**) RADEON(0): Initializing Acceleration
>> (**) RADEON(0): EngineInit (32/32)
>> (**) RADEON(0): Pitch for acceleration = 160
>> (**) RADEON(0): EngineRestore (32/32)
>> (**) RADEON(0): Initializing DPMS
>> (**) RADEON(0): Initializing Cursor
>> (**) RADEON(0): Initializing color map
>> (**) RADEON(0): Initializing DGA
>> (**) RADEON(0): Initializing Xv
>> (**) RADEON(0): RADEONScreenInit finished
>> (**) RADEON(0): RADEONSaveScreen(2)
>> (**) RADEON(0): RADEONCloseScreen
>> (**) RADEON(0): RADEONDRIStop
>> (**) RADEON(0): EngineRestore (32/32)
>> (**) RADEON(0): RADEONDisplayPowerManagementSet(0,0x0)
>> (**) RADEON(0): RADEONRestore
>> (**) RADEON(0): RADEONRestoreMode()
>> (**) RADEON(0): RADEONRestoreMode(0x8240870)
>> (**) RADEON(0): RADEONRestoreMemMapRegisters() :
>> (**) RADEON(0):   MC_FB_LOCATION   : 0x1fff0000
>> (**) RADEON(0):   MC_AGP_LOCATION  : 0x27ff2000
>> (**) RADEON(0):   Map Changed ! Applying ...
>> (**) RADEON(0):   Map applied, resetting engine ...
>> (**) RADEON(0): Updating display base addresses...
>> (**) RADEON(0): Memory map updated.
>> (**) RADEON(0): Programming CRTC1, offset: 0x00000000
>> (**) RADEON(0): Wrote: 0x0000000c 0x00030065 0x00000000 (0x0000a400)
>> (**) RADEON(0): Wrote: rd=12, fd=101, pd=3
>> (**) RADEON(0): Disposing accel...
>> (**) RADEON(0): Disposing cusor info
>> (**) RADEON(0): Disposing DGA
>> (**) RADEON(0): Unmapping memory
>> (**) RADEON(0): RADEONDRICloseScreen
>>
>>
>>
>> the only difference is, that 2.6.23-rc2-mm2 writes further
>>
>> FreeFontPath: FPE "/usr/share/X11/fonts/misc:unscaled" refcount is 2, should be
>> 1; fixing.
>>
>> and exits succesfully (note that these messages are taken on remote host, X
>> runned remotely).
>>
>> Both vesa and radeon + Option "NoAccel" "true" works obviously fine.

Also intel on integrated i915 causes this (NoAccell has no effect in this case).
Note that also 2.6.23-rc4-mm1 is affected by this behaviour.
I have a trace for you:
http://www.fi.muni.cz/~xslaby/sklad/panics/x-freeze.png
(this is the only what I'm able to grab so far)

regards,
-- 
Jiri Slaby (jirislaby@...il.com)
Faculty of Informatics, Masaryk University
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