udev: causes /etc/rc0.d/S40umountfs to segfault

Automatically imported from Debian bug report #283323 http://bugs.debian.org/283323

Message-ID: <email address hidden>
Date: Sun, 28 Nov 2004 06:24:19 +0100
From: Adeodato =?iso-8859-1?Q?Sim=F3?= <email address hidden>
To: Debian Bug Tracking System <email address hidden>
Subject: udev: causes /etc/rc0.d/S40umountfs to segfault

Package: udev
Version: 0.046-3
Severity: important

hi again,

  since that the udev-mtab script was introduced, I get umount to
  segfault in the shutdown process, leaving the filesystems in an
  unclean state (hence the severity). e.g., running

    # umount -ttmpfs -a -r

  produces:

    umount: none busy - remounted read-only
    Segmentation fault

  though this issue probably needs attention in the 'mount' package side
  (feel free to clone), I think it's reasonable to expect udev to
  properly umount itself upon system shutdown (specially now that it
  writes the mount status to /etc/mtab).

  is there a rationale for a S38udev link not existing in runlevels 0
  and 6? or perhaps turn init.d/udev-mtab into a full init script with
  start and stop...

  thanks,

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable'), (101, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.9-1-686
Locale: LANG=es_ES.UTF-8, LC_CTYPE=es_ES.UTF-8 (charmap=UTF-8)

Versions of packages udev depends on:
ii debconf [debconf-2.0] 1.4.40 Debian configuration management sy
ii hotplug 0.0.20040329-16 Linux Hotplug Scripts
ii initscripts 2.86-5 Standard scripts needed for bootin
ii libc6 2.3.2.ds1-18 GNU C Library: Shared libraries an
ii makedev 2.3.1-75 Creates device files in /dev

-- debconf information:
  udev/devfs-warning:
  udev/reboot-warning:

--
Adeodato Sim� EM: asp16 [ykwim] alu.ua.es | PK: DA6AE621

A. Because it breaks the logical sequence of discussion
Q. Why is top posting bad?

Message-Id: <email address hidden>
Date: Sun, 28 Nov 2004 12:17:54 +0100
From: Antonio Biasio <email address hidden>
To: Debian Bug Tracking System <email address hidden>
Subject: same problem after upgrade udev

Package: udev
Version: 0.046-3
Followup-For: Bug #283323

Conferm,
Same problem after upgrade udev.
In shoutdown i see same message.

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.9-686-smp
Locale: LANG=it_IT.UTF-8@euro, LC_CTYPE=it_IT.UTF-8@euro (charmap=UTF-8)

Versions of packages udev depends on:
ii debconf [debconf-2.0] 1.4.40 Debian configuration management sy
ii hotplug 0.0.20040329-16 Linux Hotplug Scripts
ii initscripts 2.86-5 Standard scripts needed for bootin
ii libc6 2.3.2.ds1-18 GNU C Library: Shared libraries an
ii makedev 2.3.1-75 Creates device files in /dev

-- debconf information:
  udev/devfs-warning:
* udev/reboot-warning:

Message-ID: <email address hidden>
Date: Sun, 28 Nov 2004 15:03:26 +0100
From: <email address hidden> (Marco d'Itri)
To: Adeodato =?iso-8859-1?Q?Sim=F3?= <email address hidden>,
 <email address hidden>
Cc: <email address hidden>, <email address hidden>
Subject: Re: Bug#283323: udev: causes /etc/rc0.d/S40umountfs to segfault

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reassign 283323 mount
thanks

On Nov 28, Adeodato Sim=F3 <email address hidden> wrote:

> since that the udev-mtab script was introduced, I get umount to
> segfault in the shutdown process, leaving the filesystems in an
> unclean state (hence the severity). e.g., running
>=20
> # umount -ttmpfs -a -r
>=20
> produces:
>=20
> umount: none busy - remounted read-only
> Segmentation fault
Reassigned to mount. Whatever the problem is, it should not segfault.

> though this issue probably needs attention in the 'mount' package side
> (feel free to clone), I think it's reasonable to expect udev to
> properly umount itself upon system shutdown (specially now that it
> writes the mount status to /etc/mtab).
No, why bother? It's a ramfs, I see no reason to waste time unmounting
it. Also don't forget that the devices in it are probably needed by the
other scripts which would be run after the one unmounting it.
Actually, I guess that maybe mount is segfaulting because it unmounts
/dev and then it can't find the other devices it has to unmount.

--=20
ciao, |
Marco | [9457 coreA16yoRRDw]

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Message-ID: <email address hidden>
Date: Mon, 29 Nov 2004 10:10:28 +0100
From: Adeodato =?iso-8859-1?Q?Sim=F3?= <email address hidden>
To: Marco d'Itri <email address hidden>, <email address hidden>
Subject: Re: Bug#283323: udev: causes /etc/rc0.d/S40umountfs to segfault

* Marco d'Itri [Sun, 28 Nov 2004 15:03:26 +0100]:
> reassign 283323 mount
> thanks

> On Nov 28, Adeodato Sim�<email address hidden>> wrote:

> > since that the udev-mtab script was introduced, I get umount to
> > segfault in the shutdown process, leaving the filesystems in an
> > unclean state (hence the severity). e.g., running

> > # umount -ttmpfs -a -r

> > produces:

> > umount: none busy - remounted read-only
> > Segmentation fault
> Reassigned to mount. Whatever the problem is, it should not segfault.

  while I agree that mount is certainly at fault, I feel that until this
  issue is resolved udev 0.46 should be kept out of sarge (*if* some
  other people confirm the mount bug, of course).

--
Adeodato Sim� EM: asp16 [ykwim] alu.ua.es | PK: DA6AE621
    Listening to: Eric Clapton - Eric Clapton - River of tears

America may be unique in being a country which has leapt from barbarism
to decadence without touching civilization.
                -- John O'Hara

Message-Id: <E1CZ5bM-0001Iz-6w@melite>
Date: Tue, 30 Nov 2004 11:51:19 +0100
From: Luis Sanjuan <email address hidden>
To: Debian Bug Tracking System <email address hidden>
Subject: Same problem here

Package: mount
Version: 2.12h-3
Followup-For: Bug #283323

I can reproduce what it is said by first poster:
Segfault at shutdown
Segfault at umount --ttmpfs -a -r

Thx.

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: powerpc (ppc)
Kernel: Linux 2.6.9
Locale: LANG=es_ES@euro, LC_CTYPE=es_ES@euro (charmap=ISO-8859-15)

Versions of packages mount depends on:
ii libc6 2.3.2.ds1-18 GNU C Library: Shared libraries an

-- no debconf information

Message-ID: <email address hidden>
Date: Tue, 30 Nov 2004 12:20:54 +0100
From: <email address hidden> (Marco d'Itri)
To: <email address hidden>
Cc: <email address hidden>, <email address hidden>
Subject: Re: Bug#283323: udev: causes /etc/rc0.d/S40umountfs to segfault

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severity 283323 critical
thanks

On Nov 28, Marco d'Itri <email address hidden> wrote:

> > since that the udev-mtab script was introduced, I get umount to
> > segfault in the shutdown process, leaving the filesystems in an
> > unclean state (hence the severity). e.g., running
I have been able to reproduce this on my system as well.

Justification: breaks an unrelated package, may cause data loss.

--=20
ciao, |
Marco | [9493 tipyRXZ02rT/A]

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Message-Id: <email address hidden>
Date: Thu, 02 Dec 2004 15:25:58 +0100
From: Antonio Biasio <email address hidden>
To: Debian Bug Tracking System <email address hidden>
Subject: mount: same problem

Package: mount
Version: 2.12h-3
Followup-For: Bug #283323

I have same problem on my system.

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.9-686-smp
Locale: LANG=it_IT.UTF-8@euro, LC_CTYPE=it_IT.UTF-8@euro (charmap=UTF-8)

Versions of packages mount depends on:
ii libc6 2.3.2.ds1-18 GNU C Library: Shared libraries an

-- no debconf information

Message-Id: <1102058132.11610.334.camel@thanatos>
Date: Fri, 03 Dec 2004 08:15:32 +0100
From: Thomas Hood <email address hidden>
To: <email address hidden>
Cc: <email address hidden>, <email address hidden>
Subject: umount segfaulting at shutdown

This (#284016) is presumably the same issue as #283323.

umount should not segfault.

However, we should also see if we can find a workaround in the
initscript.

--
Thomas Hood

Message-ID: <email address hidden>
Date: Fri, 3 Dec 2004 09:27:31 +0100
From: <email address hidden> (Marco d'Itri)
To: Thomas Hood <email address hidden>
Cc: <email address hidden>, <email address hidden>
Subject: Re: umount segfaulting at shutdown

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On Dec 03, Thomas Hood <email address hidden> wrote:

> This (#284016) is presumably the same issue as #283323.
Looks likt it is.

> umount should not segfault.
>=20
> However, we should also see if we can find a workaround in the
> initscript.
I can't think of a workaround, but if this will not be fixed in time for
sarge I will just disable the udev-mtab init script in the udev package.

--=20
ciao, |
Marco | [9542 coQqUXgqAEoPs]

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Message-ID: <email address hidden>
Date: Sat, 4 Dec 2004 11:28:49 +0100
From: "Shot (Piotr Szotkowski)" <email address hidden>
To: <email address hidden>
Subject: Same problem here

--tKW2IUtsqtDRztdT
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Hello.

Just to confirm - the same happens here. Shutdown looks like this:

Unmounting remote and non-toplevel virtual filesystems...done.
Deconfiguring network interfaces...done.
Deactivating swap...unmount: none busy - remounted read-only
Segmentation fault
done.
Unmounting local filesystems...unmount: none busy - remounted read-only
Segmentation fault
done.
Shutting down LVM Volume Groups...
  Incorrect metadata area header checksum
  Can't deactivate volume group "main" with 4 open logical volume(s)
Shutdown: hda
Power down.

shot@desaxe:~$ LC_MESSAGES=3DC apt-cache policy mount udev
mount:
  Installed: 2.12h-4
  Candidate: 2.12h-4
  Version Table:
 *** 2.12h-4 0
        500 http://ftp.debian.org unstable/main Packages
        100 /var/lib/dpkg/status
udev:
  Installed: 0.046-4
  Candidate: 0.046-4
  Version Table:
 *** 0.046-4 0
        500 http://ftp.debian.org unstable/main Packages
        100 /var/lib/dpkg/status

Pozdrav
-- Shot
--=20
           The pluses in my current job include laughing in the face
           of Nobel laureates who have just lost the only copy of
           their data. (Hey, I'm still a BOFH.) -- Bob Dowling
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D http://shot.pl/wycinki/ =3D=3D=3D

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Message-ID: <email address hidden>
Date: Sat, 4 Dec 2004 22:35:54 +0100
From: "Shot (Piotr Szotkowski)" <email address hidden>
To: Marco d'Itri <email address hidden>
Cc: <email address hidden>
Subject: Re: umount segfaulting at shutdown

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Hello.

Marco d'Itri:

> I can't think of a workaround, but if this will not be fixed in time
> for sarge I will just disable the udev-mtab init script in the udev
> package.

Is there some easy way to have it disabled for the time being?
(Preferably in a layman-friendly words; I'm not quite sure what the
/etc/init.d/udev* scripts do and how to disable them to fix this.)

I'm using Debian on a laptop and thus shutdown the OS a couple of times
every day, so I'd like to avoid the possible filesystem corruption.

Cheers,
-- Shot
--=20
     To my embarrassment I was born in bed with a lady. -- Wilson Mizner
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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//shot.pl/hovercraft/ =3D=3D=3D

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Message-ID: <email address hidden>
Date: Sat, 4 Dec 2004 22:37:54 +0100
From: <email address hidden> (Marco d'Itri)
To: "Shot (Piotr Szotkowski)" <email address hidden>
Cc: <email address hidden>
Subject: Re: umount segfaulting at shutdown

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On Dec 04, "Shot (Piotr Szotkowski)" <email address hidden> wrote:

> Is there some easy way to have it disabled for the time being?
Put "exit 0" as the second line of /etc/init.d/udev-mtab.

--=20
ciao, |
Marco | [9572 pes8re1vTwWiI]

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>> Is there some easy way to have it disabled for the time being?

>Put "exit 0" as the second line of /etc/init.d/udev-mtab.

Doesn't solve the issue for me.

Message-ID: <email address hidden>
Date: Sun, 5 Dec 2004 02:11:46 +0100
From: <email address hidden> (Marco d'Itri)
To: Adeodato =?iso-8859-1?Q?Sim=F3?= <email address hidden>,
 <email address hidden>
Cc: <email address hidden>
Subject: Re: Bug#283323: udev: causes /etc/rc0.d/S40umountfs to segfault

--JP+T4n/bALQSJXh8
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tag 283323 fixed-upstream
thanks

I have been told that this bug has been fixed in 2.12j.

--=20
ciao, |
Marco | [9577 boEqGphckbDRU]

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Message-Id: <1102333558.25052.29.camel@thanatos>
Date: Mon, 06 Dec 2004 12:45:58 +0100
From: Thomas Hood <email address hidden>
To: <email address hidden>
Subject: Fixed in mount 2.12j

The upstream changelog for mount 2.12j includes this line:

* umount: fix problem with empty mtab (Bryan Kadzban)

which appears to mean that #283323 has been fixed.

--
Thomas Hood

Message-Id: <1102335013.25052.47.camel@thanatos>
Date: Mon, 06 Dec 2004 13:10:13 +0100
From: Thomas Hood <email address hidden>
To: <email address hidden>
Subject: fixed in sid

tags 283323 sarge
tags 284016 sarge
thanks

This was (apparently) fixed in the 2.12j release of mount.

--
Thomas Hood

Fixed in 2.12j-1ubuntu1

Message-ID: <email address hidden>
Date: Wed, 8 Dec 2004 05:43:51 -0800
From: Steve Langasek <email address hidden>
To: <email address hidden>
Subject: really a mount bug

reassign 284016 mount
merge 283323 284016
thanks

*** Bug 10879 has been marked as a duplicate of this bug. ***

Message-ID: <email address hidden>
Date: Thu, 9 Dec 2004 05:16:41 -0700
From: LaMont Jones <email address hidden>
To: Matthias Haller <email address hidden>, <email address hidden>
Cc: <email address hidden>
Subject: Re: Bug#284597: libpam-mount no longer works with mount_2.12j-1 when mounting encrypted
 volumes

tags 284597 - sid
merge 284016 284597
--

fixed in 2.12j-2

lamont

*** Bug 10994 has been marked as a duplicate of this bug. ***

Message-ID: <email address hidden>
Date: Thu, 9 Dec 2004 18:19:46 +0100
From: <email address hidden> (Marco d'Itri)
To: Adeodato =?iso-8859-1?Q?Sim=F3?= <email address hidden>,
 <email address hidden>
Subject: Re: Bug#283323: udev: causes /etc/rc0.d/S40umountfs to segfault

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I confirm that this has been fixed in unstable.

--=20
ciao, |
Marco | [9671 riyHFqZfA.CKY]

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