From mboxrd@z Thu Jan  1 00:00:00 1970
From: Barto <mister.freeman@laposte.net>
Subject: Re: BUG in scsi_lib.c due to a bad commit
Date: Thu, 13 Nov 2014 23:55:38 +0100
Message-ID: <546536EA.4070705@laposte.net>
References: <54629CAE.2000207@laposte.net> <CAErSpo6FFK6zMOWSK9=dOOMKjWd1soAyj9r73yP8Z_U4F9ygAA@mail.gmail.com> <5462CB90.1080303@roeck-us.net> <54642541.9080302@laposte.net> <94D0CD8314A33A4D9D801C0FE68B4029593A1880@G9W0745.americas.hpqcorp.net> <54647C10.4070506@laposte.net> <20141113142907.GB29354@infradead.org> <5464E6E6.3090606@laposte.net> <20141113175402.GA27327@infradead.org>
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To: Christoph Hellwig <hch@infradead.org>
Cc: "Elliott, Robert (Server Storage)" <Elliott@hp.com>, Guenter Roeck <linux@roeck-us.net>, Bjorn Helgaas <bhelgaas@google.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>, Joe Perches <joe@perches.com>
List-Id: linux-scsi@vger.kernel.org

Hello Christoph,

> Please explicitly test commits:
>
> 71e75c97f97a9645d25fbf3d8e4165a558f18747

with commit 71e75c97f97a9645d25fbf3d8e4165a558f18747 there is no proble=
m


> and
>
> 74665016086615bbaa3fa6f83af410a0a4e029ee

it's interesting, with this commit
74665016086615bbaa3fa6f83af410a0a4e029ee I have the bug :

scsi: convert host_busy to atomic_t :

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?=
id=3D74665016086615bbaa3fa6f83af410a0a4e029ee

Le 13/11/2014 18:54, Christoph Hellwig a =E9crit :
> On Thu, Nov 13, 2014 at 06:14:14PM +0100, Barto wrote:
>> Hello Christoph,
>>
>> I tested this commit :
>>
>> 7ae65c0f9646c29432b69580b80e08632e6cd813 scsi: convert target_busy t=
o an
>> atomic_t
>>
>> http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commi=
t/?id=3D7ae65c0f9646c29432b69580b80e08632e6cd813
>>
>> there is no bug, boot process is ok whit this commit,
>>
>> when I did the "git bisect" the first bad commit was Guenters' commi=
t (
>> 045065d8a300a37218c548e9aa7becd581c6a0e8 ), it seems that all commit=
s
>> before 045065d8a300a37218c548e9aa7becd581c6a0e8 are ok,
>=20
> The bisect isn't quite interesting here as we're trying to find the r=
eal
> root ause.
>=20
> 045065d8a300a37218c548e9aa7becd581c6a0e8 reverts the polarity of the
> check that 71e75c97f97a9645d25fbf3d8e4165a558f18747 incorrectly
> chaged.
>=20
> The behavior you see doesn't make a lot of sense from a high level vi=
ew,
> so we need to find out what's going on.
>=20
> When you say all commits before 045065d8a300a37218c548e9aa7becd581c6a=
0e8
> I wonder if the bisect simply skiped to many revisions.
>=20
> Please explicitly test commits:
>=20
> 71e75c97f97a9645d25fbf3d8e4165a558f18747
>=20
> and
>=20
> 74665016086615bbaa3fa6f83af410a0a4e029ee
>=20
> Thanks!
>=20
>=20