[LTP] VFS: brelse: started after 2.4.10-ac7

[LTP] VFS: brelse: started after 2.4.10-ac7

[rwhron]

About 2 minutes into "runalltests.sh" on ltp, ac kernels after 2.4.10-ac7
give a message like:

Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer
Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer

Repeatability:   Good

Seen on:

2.4.10-ac8
2.4.10-ac10
2.4.10-ac10+eatcache

Not seen on:

2.4.10-ac4
2.4.10-ac7
2.4.11-pre2
2.4.11-pre6

Has occurred on every case with ac8 and ac10, and no test before.  

Doesn't happen on Linus kernels.

Does not occur on my laptop, which is ext2 only.

Did not occur on Athlon when /tmp was mounted as ext2.  
(LTP tests write a lot of files to /tmp).


I haven't tracked down which test generates the message yet, but it is
before the "personality" tests.


Configuration
-------------

Linux rushmore 2.4.10-ac10a #2 Tue Oct 9 00:42:57 EDT 2001 i686 unknown

Gnu C                  2.95.3
Gnu make               3.79.1
binutils               2.11.2
util-linux             2.11l
mount                  2.11l
modutils               2.4.10
e2fsprogs              1.25
reiserfsprogs          3.x.0j
PPP                    2.4.1
Linux C Library        2.2.4
Dynamic linker (ldd)   2.2.4
Procps                 2.0.7
Net-tools              1.60
Kbd                    1.06
Sh-utils               2.0
Modules Loaded         cmpci ppp_deflate bsd_comp ppp_async ipt_state ipt_limit ipt_MASQUERADE iptable_nat ip_conntrack iptable_filter ip_tables



-- 
Randy Hron

Re: [LTP] VFS: brelse: started after 2.4.10-ac7

[Nikita Danilov]

rwhron@earthlink.net writes:
 > 
 > About 2 minutes into "runalltests.sh" on ltp, ac kernels after 2.4.10-ac7
 > give a message like:

On what file-system ltp runs?

 > 
 > Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer
 > Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer
 > 
 > Repeatability:   Good
 > 
 > Seen on:
 > 
 > 2.4.10-ac8
 > 2.4.10-ac10
 > 2.4.10-ac10+eatcache
 > 
 > Not seen on:
 > 
 > 2.4.10-ac4
 > 2.4.10-ac7
 > 2.4.11-pre2
 > 2.4.11-pre6
 > 
 > Has occurred on every case with ac8 and ac10, and no test before.  
 > 
 > Doesn't happen on Linus kernels.
 > 
 > Does not occur on my laptop, which is ext2 only.
 > 
 > Did not occur on Athlon when /tmp was mounted as ext2.  
 > (LTP tests write a lot of files to /tmp).
 > 
 > 
 > I haven't tracked down which test generates the message yet, but it is
 > before the "personality" tests.
 > 
 > 
 > Configuration
 > -------------
 > 
 > Linux rushmore 2.4.10-ac10a #2 Tue Oct 9 00:42:57 EDT 2001 i686 unknown
 > 
 > Gnu C                  2.95.3
 > Gnu make               3.79.1
 > binutils               2.11.2
 > util-linux             2.11l
 > mount                  2.11l
 > modutils               2.4.10
 > e2fsprogs              1.25
 > reiserfsprogs          3.x.0j
 > PPP                    2.4.1
 > Linux C Library        2.2.4
 > Dynamic linker (ldd)   2.2.4
 > Procps                 2.0.7
 > Net-tools              1.60
 > Kbd                    1.06
 > Sh-utils               2.0
 > Modules Loaded         cmpci ppp_deflate bsd_comp ppp_async ipt_state ipt_limit ipt_MASQUERADE iptable_nat ip_conntrack iptable_filter ip_tables
 > 
 > 
 > 
 > -- 
 > Randy Hron
 > 
 > -
 > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
 > the body of a message to majordomo@vger.kernel.org
 > More majordomo info at  http://vger.kernel.org/majordomo-info.html
 > Please read the FAQ at  http://www.tux.org/lkml/

Re: [LTP] VFS: brelse: started after 2.4.10-ac7

[Chris Mason]

On Tuesday, October 09, 2001 09:47:07 AM -0400 rwhron@earthlink.net wrote:

> 
> About 2 minutes into "runalltests.sh" on ltp, ac kernels after 2.4.10-ac7
> give a message like:
> 
> Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer
> Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer

I might have missed something in the details, but you seem to be implying
this only happens on top of reiserfs.  It does look like one of the
reiserfs patches in -ac triggers this, they are looking for the cause.

-chris

Re: [LTP] VFS: brelse: started after 2.4.10-ac7

[Alan Cox]

> About 2 minutes into "runalltests.sh" on ltp, ac kernels after 2.4.10-ac7
> give a message like:
> 
> Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer
> Oct  9 01:55:09 rushmore kernel: VFS: brelse: Trying to free free buffer

You are using reiserfs ? Certainly there appears to a buffer cache problem
with the remaining unmerged reiserfs changes from namesys that are in -ac.

Alan