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Date: Thu, 10 Jan 2008 13:18:30 GMT
From: Simeon <archwndas@yahoo.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Freezes when compiling code on mounter ext2fs partitions
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>Number:         119529
>Category:       kern
>Synopsis:       [ext2fs] [patch] Freezes when compiling code on mounter ext2fs partitions
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-fs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Jan 10 13:20:02 UTC 2008
>Closed-Date:    Mon May 18 16:44:54 UTC 2009
>Last-Modified:  Mon May 18 16:44:54 UTC 2009
>Originator:     Simeon
>Release:        7.0 RC1 everything default
>Organization:
Home
>Environment:
AMD64
>Description:
Hello,

I would like to report a strange behaviour of FreeBSD AMD64 ver.  7.0 RC1.
I installed it on a Laptop with Intel Core 2 Duo CPU.  Everything default.
I have an ext2fs partition where I store all installed compilers and
libraries. I changed directory to my ext3 (ext2fs) partition and I started
compiling one of my libraries. The system Hanged. I repeated the same
thing with several other libraries (ATLAS(BLAS), LAPACK, ...) and everytime
the system hanged. Then I copied the sources to /usr and I compiled them
there. No problem. Everything was fine there.

Best,
Simeon.

>How-To-Repeat:
It is very easy to repeat. Just mount an ext2fs partition copy some large
source code and try to compile it there.
>Fix:
There was a similar problem in the past and it was supposed to be fixed
in 6.2. Maybe now for some reason it came back to life. 

>Release-Note:
>Audit-Trail:

From: Jaakko Heinonen <jh@saunalahti.fi>
To: archwndas@yahoo.com
Cc: bug-followup@FreeBSD.org
Subject: Re: kern/119529: [ext2fs] Freezes when compiling code on mounter
	ext2fs partitions
Date: Sun, 4 Jan 2009 12:55:12 +0200

 Please see the following message and the patch below.
 
 http://lists.freebsd.org/pipermail/freebsd-fs/2009-January/005546.html
 
 --- patch begins here ---
 Index: sys/gnu/fs/ext2fs/ext2_bitops.h
 ===================================================================
 --- sys/gnu/fs/ext2fs/ext2_bitops.h	(revision 186639)
 +++ sys/gnu/fs/ext2fs/ext2_bitops.h	(working copy)
 @@ -84,7 +84,7 @@ find_next_zero_bit(void *data, size_t sz
  		mask = ~0U << (ofs & 31);
  		bit = *p | ~mask;
  		if (bit != ~0U)
 -			return (ffs(~bit) + ofs - 1);
 +			return (ffs(~bit) + (ofs & ~31U) - 1);
  		p++;
  		ofs = (ofs + 31U) & ~31U;
  	}
 --- patch ends here ---
 
 Does the patch fix the problem for you?
 
 -- 
 Jaakko
State-Changed-From-To: open->feedback 
State-Changed-By: vwe 
State-Changed-When: Sun Jan 18 22:53:50 UTC 2009 
State-Changed-Why:  

Note that submitter has been asked for feedback. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=119529 
Responsible-Changed-From-To: freebsd-bugs->freebsd-fs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Mon May 18 04:31:44 UTC 2009 
Responsible-Changed-Why:  
Over to maintainer(s). 

http://www.freebsd.org/cgi/query-pr.cgi?pr=119529 
State-Changed-From-To: feedback->closed 
State-Changed-By: kib 
State-Changed-When: Mon May 18 16:44:21 UTC 2009 
State-Changed-Why:  
The patch in the trail log was committed. 
I believe it should fix the issue. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=119529 
>Unformatted:
