NetBSD Problem Report #37005

From simonb@tachikoma.kaizo.org  Wed Sep 19 07:22:57 2007
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Message-Id: <20070919072252.B250E10843@tachikoma.kaizo.org>
Date: Wed, 19 Sep 2007 08:22:52 +0100 (BST)
From: simonb@kaizo.org
Reply-To: simonb@kaizo.org
To: gnats-bugs@NetBSD.org
Subject: Kernel crash in -current (wrt screenblank)
X-Send-Pr-Version: 3.95

>Number:         37005
>Category:       kern
>Synopsis:       screenblank = yes && kernel == fb then crash
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 19 07:25:00 +0000 2007
>Last-Modified:  Thu Sep 27 20:50:01 +0000 2007
>Originator:     simonb@kaizo.org
>Release:        NetBSD 4.99.31
>Organization:
--------------------------------------------------------------------------
Simon B.                      If I want your opinion, I'll give it to you. 
--------------------------------------------------------------------------
>Environment:


System: NetBSD tachikoma.kaizo.org 4.99.31 NetBSD 4.99.31 (TACHIKOMA) #0: Tue Sep 18 22:22:09 BST 2007 simonb@tachikoma.kaizo.org:/usr/obj/sys/arch/i386/compile/TACHIKOMA i386
Architecture: i386
Machine: i386
>Description:

	After upgrading to -current, and having a play with the new frame buffer display, if /etc/rc.conf contains "screenblank" the the kernel crashes with the message : fatal asynchronous system trap in supervisor mode

>How-To-Repeat:

	enable the framebuffer devicen the GENERIC config and enable screenblank in /etc/rc.conf
>Fix:
	disbale one or the other... 

>Audit-Trail:
From: "Jared D. McNeill" <jmcneill@invisible.ca>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Wed, 19 Sep 2007 15:11:30 -0400 (EDT)

 On Wed, 19 Sep 2007, simonb@kaizo.org wrote:
 > 	After upgrading to -current, and having a play with the new frame buffer display, if /etc/rc.conf contains "screenblank" the the kernel crashes with the message : fatal asynchronous system trap in supervisor mode
 >
 >> How-To-Repeat:
 >
 > 	enable the framebuffer devicen the GENERIC config and enable screenblank in /etc/rc.conf
 >> Fix:
 > 	disbale one or the other...

 Are you using vesafb with options VESAFB_PM? This option has issues...

 Cheers,
 Jared

From: Simon B <simonb@kaizo.org>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 20 Sep 2007 11:03:13 +0100

 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1

 * Jared D. McNeill <jmcneill@invisible.ca> scribbled on: [2007-09-19 20:30:02 +0000]:

 > The following reply was made to PR kern/37005; it has been noted by GNATS.
 > 
 > From: "Jared D. McNeill" <jmcneill@invisible.ca>
 > To: gnats-bugs@NetBSD.org
 > Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
 > 	netbsd-bugs@netbsd.org
 > Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
 > Date: Wed, 19 Sep 2007 15:11:30 -0400 (EDT)
 > 
 >  On Wed, 19 Sep 2007, simonb@kaizo.org wrote:
 >  > 	After upgrading to -current, and having a play with the new frame buffer display, if /etc/rc.conf contains "screenblank" the the kernel crashes with the message : fatal asynchronous system trap in supervisor mode
 >  >
 >  >> How-To-Repeat:
 >  >
 >  > 	enable the framebuffer devicen the GENERIC config and enable screenblank in /etc/rc.conf
 >  >> Fix:
 >  > 	disbale one or the other...
 >  
 >  Are you using vesafb with options VESAFB_PM? This option has issues...

 Yes I was.  Thanks for letting me know it's a known issue.

 Regards,

 Simon.

 - -- 
  "Who was that guy?" -Fry 
  "Your momma! Now shut up and drag me to work." -Bender 
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From: "Jared D. McNeill" <jmcneill@invisible.ca>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org, simonb@kaizo.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 20 Sep 2007 14:55:20 -0400 (EDT)

 On Thu, 20 Sep 2007, Simon B wrote:
 > Yes I was.  Thanks for letting me know it's a known issue.

 It's not so much of an issue with vesafb, but instead the bioscall 
 interface -- it doesn't really work well when interrupts are enabled. It's 
 one of the many items on my TODO list to investigate...

 On a whim, do you happen to have ACPI enabled in your kernel? Can you try 
 a kernel without ACPI? I discovered an issue (fixed on a branch, not yet 
 merged with HEAD) where on i386, the acpi wakecode and i386 biostramp code 
 share the same page, which will cause all sorts of headaches...

 In other words, is it possible for you to try GENERIC.NOACPI ?

 Cheers,
 Jared

From: Simon B <simonb@kaizo.org>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Wed, 26 Sep 2007 16:55:26 +0100

 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1

 * Jared D. McNeill <jmcneill@invisible.ca> scribbled on: [2007-09-20 19:00:08 +0000]:

 > The following reply was made to PR kern/37005; it has been noted by GNATS.
 > 
 > From: "Jared D. McNeill" <jmcneill@invisible.ca>
 > To: gnats-bugs@NetBSD.org
 > Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
 > 	netbsd-bugs@netbsd.org, simonb@kaizo.org
 > Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
 > Date: Thu, 20 Sep 2007 14:55:20 -0400 (EDT)
 > 
 >  On Thu, 20 Sep 2007, Simon B wrote:
 >  > Yes I was.  Thanks for letting me know it's a known issue.
 >  
 >  It's not so much of an issue with vesafb, but instead the bioscall 
 >  interface -- it doesn't really work well when interrupts are enabled. It's 
 >  one of the many items on my TODO list to investigate...
 >  
 >  On a whim, do you happen to have ACPI enabled in your kernel? Can you try 
 >  a kernel without ACPI? I discovered an issue (fixed on a branch, not yet 
 >  merged with HEAD) where on i386, the acpi wakecode and i386 biostramp code 
 >  share the same page, which will cause all sorts of headaches...
 >  
 >  In other words, is it possible for you to try GENERIC.NOACPI ?

 Jared et al,

 Yep - that works fine.  Anything else you'd like me to try?

 S.

 - -- 
  Fry: Hey, I don't see you planning for your old age.
  Bender: I got plans. I'm gonna turn my on/off switch to off.
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From: "Jared D. McNeill" <jmcneill@invisible.ca>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org, simonb@kaizo.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 27 Sep 2007 07:50:31 -0400 (EDT)

 On Wed, 26 Sep 2007, Simon B wrote:
 > Yep - that works fine.  Anything else you'd like me to try?

 Sorry, I should have asked -- can you try a kernel based on GENERIC.NOACPI 
 that includes vesafb, VESAFB_PM, etc?

 Cheers,
 Jared

From: Simon B <simonb@kaizo.org>
To: "Jared D. McNeill" <jmcneill@invisible.ca>
Cc: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org,
	gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 27 Sep 2007 13:00:59 +0100

 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1

 * Jared D. McNeill <jmcneill@invisible.ca> scribbled on: [2007-09-27 07:50:31 -0400]:

 >  On Wed, 26 Sep 2007, Simon B wrote:
 > > Yep - that works fine.  Anything else you'd like me to try?
 > 
 >  Sorry, I should have asked -- can you try a kernel based on GENERIC.NOACPI 
 >  that includes vesafb, VESAFB_PM, etc?
 > 

 Heh, and I should have said - I did :-)

 s.

 - -- 
 "I do remain confident in Linda [Chavez].  She'll make a fine labor
 secretary.  From what I've read in the press accounts, she's perfectly
 qualified."

 George W. Bush
 January 8, 2001
 Comment by the president-elect during a press conference.
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From: "Jared D. McNeill" <jmcneill@invisible.ca>
To: Simon B <simonb@kaizo.org>
Cc: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org,
	gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 27 Sep 2007 08:34:49 -0400 (EDT)

 On Thu, 27 Sep 2007, Simon B wrote:
 > Heh, and I should have said - I did :-)

 Excellent. Can you try a kernel from the jmcneill-pm branch that includes 
 both ACPI and VESAFB_PM? This issue _should_ be resolved on the branch..

 Cheers,
 Jared

From: Simon B <simonb@kaizo.org>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 27 Sep 2007 15:47:28 +0100

 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1

 * Jared D. McNeill <jmcneill@invisible.ca> scribbled on: [2007-09-27 12:35:02 +0000]:

 >  Excellent. Can you try a kernel from the jmcneill-pm branch that includes 
 >  both ACPI and VESAFB_PM? This issue _should_ be resolved on the branch..

 Done, boots fine.  Need a new dmesg or anything?

 Thanks for your help.

 S.

 - -- 
 "The best way to relieve families from time is to let them keep some of their
 own money."

 George W. Bush
 September 13, 2000
 Comment made in Westminster, California.
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From: "Jared D. McNeill" <jmcneill@invisible.ca>
To: Simon B <simonb@kaizo.org>
Cc: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org,
	gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 27 Sep 2007 14:49:21 -0400 (EDT)

 On Thu, 27 Sep 2007, Simon B wrote:
 > Done, boots fine.  Need a new dmesg or anything?

 Boots fine -- and does screenblank now work?

 Cheers,
 Jared

From: Simon B <simonb@kaizo.org>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
Date: Thu, 27 Sep 2007 21:44:56 +0100

 -----BEGIN PGP SIGNED MESSAGE-----
 Hash: SHA1

 * Jared D. McNeill <jmcneill@invisible.ca> scribbled on: [2007-09-27 18:50:02 +0000]:

 > The following reply was made to PR kern/37005; it has been noted by GNATS.
 > 
 > From: "Jared D. McNeill" <jmcneill@invisible.ca>
 > To: Simon B <simonb@kaizo.org>
 > Cc: gnats-bugs@NetBSD.org, kern-bug-people@netbsd.org,
 > 	gnats-admin@netbsd.org, netbsd-bugs@netbsd.org
 > Subject: Re: kern/37005: Kernel crash in -current (wrt screenblank)
 > Date: Thu, 27 Sep 2007 14:49:21 -0400 (EDT)
 > 
 >  On Thu, 27 Sep 2007, Simon B wrote:
 >  > Done, boots fine.  Need a new dmesg or anything?
 >  
 >  Boots fine -- and does screenblank now work?
 >  

 Screenblanks OK, but doesn't resume after the first blank.

 S.

 - -- 
 "The best way to relieve families from time is to let them keep some of their
 own money."

 George W. Bush
 September 13, 2000
 Comment made in Westminster, California.
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>Unformatted:

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