linux-kernel - Re: dmsetup fails on latest kernel

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Message-ID: <CALLzPKbeXN5gdngo8uYYU8mAow=XhrwBFBhKfG811f37BubQOg@mail.gmail.com>
Date:	Thu, 19 Jan 2012 17:56:28 +0200
From:	"Kasatkin, Dmitry" <dmitry.kasatkin@...el.com>
To:	device-mapper development <dm-devel@...hat.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: Re: dmsetup fails on latest kernel

On Thu, Jan 19, 2012 at 3:02 PM, Kasatkin, Dmitry
<dmitry.kasatkin@...el.com> wrote:
> Hi,
>
> (subject added)
>
> I rebased on the stop of latest mainline tree and now dmsetup fails...
> It says: "Failed to create notification semaphore: Function not implemented".
> I run strace and saw that dmsetup uses "semget" which returns -ENOSYS...
>
> It works on
> 122804ecb59493fbb4d31b3ba9ac59faaf45276f
>
> but does not work on
> ccb19d263fd1c9e34948e2158c53eacbff369344
>
> Any ideas?
>
> - Dmitry

Hi,

I have bisected the problem...

It is introduced by this commit:

303395ac3bf3e2cb488435537d416bc840438fcb is the first bad commit
commit 303395ac3bf3e2cb488435537d416bc840438fcb
Author: H. Peter Anvin <hpa@...ux.intel.com>
Date:   Fri Nov 11 16:07:41 2011 -0800

    x86: Generate system call tables and unistd_*.h from tables


It came from:  Merge branch 'x86-syscall-for-linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Was on 17.01.2012...

I have 32 bit VM and I have SYSVIPC enabled in the configuration...

- Dmitry
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