linux-kernel - Re: Regression in 2.6.28-rc and 2.6.27-stable

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Date:	Sun, 23 Nov 2008 21:23:42 +0100
From:	"Fabio Comolli" <fabio.comolli@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: Regression in 2.6.28-rc and 2.6.27-stable - hibernate related

Hi.

On Sun, Nov 23, 2008 at 7:24 PM, Fabio Comolli <fabio.comolli@...il.com> wrote:
> Hi
>
> Yes. I started another bisection session between 2.6.27.4 and 2.6.27.5.
>

Ok, this time things went much better. The bisection pointed to:

------------------------------------------------------------------------------------------------------------------------------------------------
fcomolli@...king:~/software/GIT-TREES/linux-2.6.27.y> git bisect good
ff0f8d16839cd02dc95bd92c212cbd5d433a4d2b is first bad commit
commit ff0f8d16839cd02dc95bd92c212cbd5d433a4d2b
Author: Jay Fenlason <fenlason@...hat.com>
Date:   Mon Oct 27 23:28:14 2008 +0100

    firewire: fix struct fw_node memory leak

    commit 77e557191701afa55ae7320d42ad6458a2ad292e upstream

    With the bus_resets patch applied, it is easy to see this memory leak
    by repeatedly resetting the firewire bus while running slabtop in
    another window.  Just watch kmalloc-32 grow and grow...

    Signed-off-by: Jay Fenlason <fenlason@...hat.com>
    Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>

:040000 040000 01cadbd5f5fb81ce4f5e2023573204c4fbec3a28
809a53f4be87bd8be133ebd7564e1139a0cfa45b M      drivers
------------------------------------------------------------------------------------------------------------------------------------------------

And this is the log:

------------------------------------------------------------------------------------------------------------------------------------------------
fcomolli@...king:~/software/GIT-TREES/linux-2.6.27.y> git bisect log
git-bisect start
# good: [056c71459d3acf9fefcb2dc67abeef10e649d508] Linux 2.6.27.4
git-bisect good 056c71459d3acf9fefcb2dc67abeef10e649d508
# bad: [788a5f3f70e2a9c46020bdd3a195f2a866441c5d] Linux 2.6.27.5
git-bisect bad 788a5f3f70e2a9c46020bdd3a195f2a866441c5d
# bad: [7bdb542c453c14e54af9ebe5c4a827e4a678c47d] powerpc/numa: Make
memory reserve code more robust
git-bisect bad 7bdb542c453c14e54af9ebe5c4a827e4a678c47d
# good: [f29062d0ec12ee3a58c67228dc829574b4ced378] syncookies: fix
inclusion of tcp options in syn-ack
git-bisect good f29062d0ec12ee3a58c67228dc829574b4ced378
# good: [882491755d4c819de5bb593f04d06692185760aa] firewire: fix
ioctl() return code
git-bisect good 882491755d4c819de5bb593f04d06692185760aa
# bad: [baae4f5fd7a75bdfa70d374b738963053df2bcaa] firewire: fw-sbp2: fix races
git-bisect bad baae4f5fd7a75bdfa70d374b738963053df2bcaa
# bad: [ff0f8d16839cd02dc95bd92c212cbd5d433a4d2b] firewire: fix struct
fw_node memory leak
git-bisect bad ff0f8d16839cd02dc95bd92c212cbd5d433a4d2b
# good: [b6021579f54e5b6b31f03fe24de1208a2feb4aec] firewire: Survive
more than 256 bus resets
git-bisect good b6021579f54e5b6b31f03fe24de1208a2feb4aec
------------------------------------------------------------------------------------------------------------------------------------------------

The commit reverted cleanly and now I'm running 2.6.27.7 with that
commit reverted. I'll post my results.

Hoper this helps. Regards,
Fabio

>> Rafael
>
> Regards,
> Fabio
>
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