Re: [PATCH 0/1] devpts: use dynamic_dname() to generate proc name

Stefan Lippers-Hollmann
2017-08-24T00:25:14Z

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Hi

On 2017-08-16, Linus Torvalds wrote:
> On Wed, Aug 16, 2017 at 4:51 PM, Eric W. Biederman
> <ebiederm@xmission.com> wrote:
[...]
> Maybe this attached patch is better anyway. It's smaller, because it
> keeps more closely to the old code, and just adds a mntput() in all
> the exit cases, and depends on the "path_get()" to have incremented
> the mnt refcount one extra time.
>
> Can you find something in this one?
>
> ENTIRELY UNTESTED!

This patch[1] as part of 4.13-rc6 (up to, at least,
v4.13-rc6-45-g6470812e2226) introduces a regression for me when using
pbuilder 0.228.7[2] (a helper to build Debian packages in a chroot and
to create and update its chroots) when trying to umount /dev/ptmx (inside
the chroot) on Debian/ unstable (full log and pbuilder configuration
file[3] attached).

[...]
Setting up build-essential (12.3) ...
Processing triggers for libc-bin (2.24-15) ...
I: unmounting dev/ptmx filesystem
W: Could not unmount dev/ptmx: umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)
W: Retrying to unmount dev/ptmx in 5s
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

Could not unmount dev/ptmx, some programs might
still be using files in /proc (klogd?).
Please check and kill these processes manually
so that I can unmount dev/ptmx. Last umount error was:
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)
[...]

lsof isn't revealing (but this might point towards gvfs 1.30.4-1+b1
involvement), fuser -k doesn't release the ressource.

Kernel v4.13-rc5 and before (at least 4.11.x and 4.12.x) are not
affected, but this problem is reliably reproducible on three different
x86_64 systems running Debian/ unstable when the host is running a
kernel >=4.6.13-rc6. Unfortunately I haven't really found an easier/
smaller way to reproduce this issue yet, but creating a new build
chroot[4] always triggers this problem, updating an existing build
chroot[5] (which also mounts and umounts /dev/ptmx) triggers most of
the time, but not reliably - building a package (e.g. the kernel, also
mounting and umounting /dev/ptmx) also triggered this issue at least
once (but I didn't try this more often).

My git bisection log is this:

$ git bisect log
git bisect start
# good: [ef954844c7ace62f773f4f23e28d2d915adc419f] Linux 4.13-rc5
git bisect good ef954844c7ace62f773f4f23e28d2d915adc419f
# bad: [14ccee78fc82f5512908f4424f541549a5705b89] Linux 4.13-rc6
git bisect bad 14ccee78fc82f5512908f4424f541549a5705b89
# bad: [cb247857f3dae0bdb843362c35027a0066b963a4] Merge tag 'sound-4.13-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
git bisect bad cb247857f3dae0bdb843362c35027a0066b963a4
# good: [88a5c690b66110ad255380d8f629c629cf6ca559] bpf: fix bpf_trace_printk on 32 bit archs
git bisect good 88a5c690b66110ad255380d8f629c629cf6ca559
# bad: [3bc6c906eacec34f0d8dcfd3c7e4513edf152297] Merge branch 'parisc-4.13-5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
git bisect bad 3bc6c906eacec34f0d8dcfd3c7e4513edf152297
# good: [40c6d1b9e2fc4251ca19fa69398f6fa34e813e27] Merge tag 'linux-kselftest-4.13-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
git bisect good 40c6d1b9e2fc4251ca19fa69398f6fa34e813e27
# good: [ac9a40905a610fb02086a37b11ff4bf046825a88] Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
git bisect good ac9a40905a610fb02086a37b11ff4bf046825a88
# bad: [99f781b1bfc199ec8eb86d4e015920faf79d5d57] Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
git bisect bad 99f781b1bfc199ec8eb86d4e015920faf79d5d57
# good: [41e327b586762833e48b3703d53312ac32f05f24] quota: correct space limit check
git bisect good 41e327b586762833e48b3703d53312ac32f05f24

Reverting just c8c03f1858331e85d397bacccd34ef409aae993c from
v4.13-rc6-65-g2acf097f16ab reliably fixes the problem for me.

Regards
Stefan Lippers-Hollmann

[1] commit c8c03f1858331e85d397bacccd34ef409aae993c (HEAD)
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed Aug 16 17:08:07 2017 -0700
Subject: pty: fix the cached path of the pty slave file
descriptor in the master
[2] https://packages.qa.debian.org/p/pbuilder.html
https://pbuilder.alioth.debian.org/
https://anonscm.debian.org/git/pbuilder/pbuilder.git
mounting/ umounting /dev/ptmx happens in
https://anonscm.debian.org/git/pbuilder/pbuilder.git/tree/pbuilder-modules
[3] the configuration file as attached relies on BUILDUSERNAME="pbuilder"
and BUILDUSERID="$(getent passwd $BUILDUSERNAME | cut -d\: -f3)",
commenting those out should be possible, my full BUILDUSER* setup
is:
# addgroup --system pbuilder
# adduser --system --disabled-password --ingroup pbuilder --gecos "pbuilder buildd user" --home /var/run/pbuilder pbuilder
# chown pbuilder:pbuilder /var/cache/pbuilder/deps /var/cache/pbuilder/build-result
# chmod 2775 /var/cache/pbuilder/deps /var/cache/pbuilder/build-result
[4] sudo /usr/sbin/pbuilder create --configfile pbuilderrc.debian.sid.amd64
[5] sudo /usr/sbin/pbuilder update --configfile pbuilderrc.debian.sid.amd64

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sudo /usr/sbin/pbuilder create --configfile /etc/pbuilder/pbuilderrc.debian.sid.amd64
W: /root/.pbuilderrc does not exist
I: Distribution is sid.
I: Current time: Thu Aug 24 00:07:28 CEST 2017
I: pbuilder-time-stamp: 1503526048
I: Building the build environment
I: running cdebootstrap
/usr/bin/cdebootstrap
P: Retrieving Release
P: Retrieving Release.gpg
P: Validating Release
I: Good signature from "Debian Archive Automatic Signing Key (7.0/wheezy) <ftpmaster@debian.org>"
I: Good signature from "Debian Archive Automatic Signing Key (8/jessie) <ftpmaster@debian.org>"
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P: Deconfiguring helper cdebootstrap-helper-apt
P: Deconfiguring helper cdebootstrap-helper-makedev
P: Writing apt sources.list
P: Writing hosts
P: Writing resolv.conf
I: debootstrap finished
I: copying local configuration
I: Installing apt-lines
I: Copy /usr/lib/pbuilder/aptconfdir/apt.conf.d to chroot
I: copying apt key file /usr/share/keyrings/debian-archive-keyring.gpg to /var/cache/pbuilder/build/1340/etc/apt/trusted.gpg.d/debian-archive-keyring.gpg
I: Refreshing the base.tgz
I: upgrading packages
I: mounting /proc filesystem
I: mounting /sys filesystem
I: creating /{dev,run}/shm
I: mounting /dev/pts filesystem
I: redirecting /dev/ptmx to /dev/pts/ptmx
I: policy-rc.d already exists
Get:1 http://ftp.de.debian.org/debian sid InRelease [228 kB]
Get:2 http://ftp.de.debian.org/debian sid/main amd64 Packages [7635 kB]
Fetched 7863 kB in 1s (5918 kB/s)
Reading package lists...
Reading package lists...
Building dependency tree...
Reading state information...
Calculating upgrade...
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists...
Building dependency tree...
Reading state information...
The following additional packages will be installed:
binutils bzip2 cpp cpp-7 g++ g++-7 gcc gcc-7 libasan4 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libdpkg-perl libgcc-7-dev libgdbm3 libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libperl5.26 libquadmath0 libstdc++-7-dev libtsan0 libubsan0 linux-libc-dev make patch perl perl-modules-5.26 xz-utils
Suggested packages:
binutils-doc bzip2-doc cpp-doc gcc-7-locales debian-keyring g++-multilib g++-7-multilib gcc-7-doc libstdc++6-7-dbg gcc-multilib manpages-dev autoconf automake libtool flex bison gdb gcc-doc gcc-7-multilib libgcc1-dbg libgomp1-dbg libitm1-dbg libatomic1-dbg libasan4-dbg liblsan0-dbg libtsan0-dbg libubsan0-dbg libcilkrts5-dbg libmpx2-dbg libquadmath0-dbg glibc-doc
libstdc++-7-doc make-doc ed diffutils-doc perl-doc libterm-readline-gnu-perl | libterm-readline-perl-perl
Recommended packages:
fakeroot libalgorithm-merge-perl manpages manpages-dev libfile-fcntllock-perl liblocale-gettext-perl netbase rename
The following NEW packages will be installed:
binutils build-essential bzip2 cpp cpp-7 dpkg-dev g++ g++-7 gcc gcc-7 libasan4 libatomic1 libc-dev-bin libc6-dev libcc1-0 libcilkrts5 libdpkg-perl libgcc-7-dev libgdbm3 libgomp1 libisl15 libitm1 liblsan0 libmpc3 libmpfr4 libmpx2 libperl5.26 libquadmath0 libstdc++-7-dev libtsan0 libubsan0 linux-libc-dev make patch perl perl-modules-5.26 xz-utils
0 upgraded, 37 newly installed, 0 to remove and 0 not upgraded.
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Get:24 http://ftp.de.debian.org/debian sid/main amd64 libcilkrts5 amd64 7.2.0-1 [42.2 kB]
Get:25 http://ftp.de.debian.org/debian sid/main amd64 libmpx2 amd64 7.2.0-1 [11.4 kB]
Get:26 http://ftp.de.debian.org/debian sid/main amd64 libquadmath0 amd64 7.2.0-1 [132 kB]
Get:27 http://ftp.de.debian.org/debian sid/main amd64 libgcc-7-dev amd64 7.2.0-1 [2356 kB]
Get:28 http://ftp.de.debian.org/debian sid/main amd64 gcc-7 amd64 7.2.0-1 [31.9 MB]
Get:29 http://ftp.de.debian.org/debian sid/main amd64 gcc amd64 4:7.1.0-2 [5102 B]
Get:30 http://ftp.de.debian.org/debian sid/main amd64 libstdc++-7-dev amd64 7.2.0-1 [1443 kB]
Get:31 http://ftp.de.debian.org/debian sid/main amd64 g++-7 amd64 7.2.0-1 [35.1 MB]
Get:32 http://ftp.de.debian.org/debian sid/main amd64 g++ amd64 4:7.1.0-2 [1542 B]
Get:33 http://ftp.de.debian.org/debian sid/main amd64 make amd64 4.1-9.1 [302 kB]
Get:34 http://ftp.de.debian.org/debian sid/main amd64 libdpkg-perl all 1.18.24 [1283 kB]
Get:35 http://ftp.de.debian.org/debian sid/main amd64 patch amd64 2.7.5-1+b2 [112 kB]
Get:36 http://ftp.de.debian.org/debian sid/main amd64 dpkg-dev all 1.18.24 [1592 kB]
Get:37 http://ftp.de.debian.org/debian sid/main amd64 build-essential amd64 12.3 [7346 B]
Fetched 124 MB in 3s (38.6 MB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package perl-modules-5.26.
(Reading database ... 4748 files and directories currently installed.)
Preparing to unpack .../00-perl-modules-5.26_5.26.0-5_all.deb ...
Unpacking perl-modules-5.26 (5.26.0-5) ...
Selecting previously unselected package libgdbm3:amd64.
Preparing to unpack .../01-libgdbm3_1.8.3-14_amd64.deb ...
Unpacking libgdbm3:amd64 (1.8.3-14) ...
Selecting previously unselected package libperl5.26:amd64.
Preparing to unpack .../02-libperl5.26_5.26.0-5_amd64.deb ...
Unpacking libperl5.26:amd64 (5.26.0-5) ...
Selecting previously unselected package perl.
Preparing to unpack .../03-perl_5.26.0-5_amd64.deb ...
Unpacking perl (5.26.0-5) ...
Selecting previously unselected package bzip2.
Preparing to unpack .../04-bzip2_1.0.6-8.1_amd64.deb ...
Unpacking bzip2 (1.0.6-8.1) ...
Selecting previously unselected package xz-utils.
Preparing to unpack .../05-xz-utils_5.2.2-1.3_amd64.deb ...
Unpacking xz-utils (5.2.2-1.3) ...
Selecting previously unselected package binutils.
Preparing to unpack .../06-binutils_2.29-5_amd64.deb ...
Unpacking binutils (2.29-5) ...
Selecting previously unselected package libc-dev-bin.
Preparing to unpack .../07-libc-dev-bin_2.24-15_amd64.deb ...
Unpacking libc-dev-bin (2.24-15) ...
Selecting previously unselected package linux-libc-dev:amd64.
Preparing to unpack .../08-linux-libc-dev_4.12.6-1_amd64.deb ...
Unpacking linux-libc-dev:amd64 (4.12.6-1) ...
Selecting previously unselected package libc6-dev:amd64.
Preparing to unpack .../09-libc6-dev_2.24-15_amd64.deb ...
Unpacking libc6-dev:amd64 (2.24-15) ...
Selecting previously unselected package libisl15:amd64.
Preparing to unpack .../10-libisl15_0.18-1_amd64.deb ...
Unpacking libisl15:amd64 (0.18-1) ...
Selecting previously unselected package libmpfr4:amd64.
Preparing to unpack .../11-libmpfr4_3.1.5-1_amd64.deb ...
Unpacking libmpfr4:amd64 (3.1.5-1) ...
Selecting previously unselected package libmpc3:amd64.
Preparing to unpack .../12-libmpc3_1.0.3-1+b2_amd64.deb ...
Unpacking libmpc3:amd64 (1.0.3-1+b2) ...
Selecting previously unselected package cpp-7.
Preparing to unpack .../13-cpp-7_7.2.0-1_amd64.deb ...
Unpacking cpp-7 (7.2.0-1) ...
Selecting previously unselected package cpp.
Preparing to unpack .../14-cpp_4%3a7.1.0-2_amd64.deb ...
Unpacking cpp (4:7.1.0-2) ...
Selecting previously unselected package libcc1-0:amd64.
Preparing to unpack .../15-libcc1-0_7.2.0-1_amd64.deb ...
Unpacking libcc1-0:amd64 (7.2.0-1) ...
Selecting previously unselected package libgomp1:amd64.
Preparing to unpack .../16-libgomp1_7.2.0-1_amd64.deb ...
Unpacking libgomp1:amd64 (7.2.0-1) ...
Selecting previously unselected package libitm1:amd64.
Preparing to unpack .../17-libitm1_7.2.0-1_amd64.deb ...
Unpacking libitm1:amd64 (7.2.0-1) ...
Selecting previously unselected package libatomic1:amd64.
Preparing to unpack .../18-libatomic1_7.2.0-1_amd64.deb ...
Unpacking libatomic1:amd64 (7.2.0-1) ...
Selecting previously unselected package libasan4:amd64.
Preparing to unpack .../19-libasan4_7.2.0-1_amd64.deb ...
Unpacking libasan4:amd64 (7.2.0-1) ...
Selecting previously unselected package liblsan0:amd64.
Preparing to unpack .../20-liblsan0_7.2.0-1_amd64.deb ...
Unpacking liblsan0:amd64 (7.2.0-1) ...
Selecting previously unselected package libtsan0:amd64.
Preparing to unpack .../21-libtsan0_7.2.0-1_amd64.deb ...
Unpacking libtsan0:amd64 (7.2.0-1) ...
Selecting previously unselected package libubsan0:amd64.
Preparing to unpack .../22-libubsan0_7.2.0-1_amd64.deb ...
Unpacking libubsan0:amd64 (7.2.0-1) ...
Selecting previously unselected package libcilkrts5:amd64.
Preparing to unpack .../23-libcilkrts5_7.2.0-1_amd64.deb ...
Unpacking libcilkrts5:amd64 (7.2.0-1) ...
Selecting previously unselected package libmpx2:amd64.
Preparing to unpack .../24-libmpx2_7.2.0-1_amd64.deb ...
Unpacking libmpx2:amd64 (7.2.0-1) ...
Selecting previously unselected package libquadmath0:amd64.
Preparing to unpack .../25-libquadmath0_7.2.0-1_amd64.deb ...
Unpacking libquadmath0:amd64 (7.2.0-1) ...
Selecting previously unselected package libgcc-7-dev:amd64.
Preparing to unpack .../26-libgcc-7-dev_7.2.0-1_amd64.deb ...
Unpacking libgcc-7-dev:amd64 (7.2.0-1) ...
Selecting previously unselected package gcc-7.
Preparing to unpack .../27-gcc-7_7.2.0-1_amd64.deb ...
Unpacking gcc-7 (7.2.0-1) ...
Selecting previously unselected package gcc.
Preparing to unpack .../28-gcc_4%3a7.1.0-2_amd64.deb ...
Unpacking gcc (4:7.1.0-2) ...
Selecting previously unselected package libstdc++-7-dev:amd64.
Preparing to unpack .../29-libstdc++-7-dev_7.2.0-1_amd64.deb ...
Unpacking libstdc++-7-dev:amd64 (7.2.0-1) ...
Selecting previously unselected package g++-7.
Preparing to unpack .../30-g++-7_7.2.0-1_amd64.deb ...
Unpacking g++-7 (7.2.0-1) ...
Selecting previously unselected package g++.
Preparing to unpack .../31-g++_4%3a7.1.0-2_amd64.deb ...
Unpacking g++ (4:7.1.0-2) ...
Selecting previously unselected package make.
Preparing to unpack .../32-make_4.1-9.1_amd64.deb ...
Unpacking make (4.1-9.1) ...
Selecting previously unselected package libdpkg-perl.
Preparing to unpack .../33-libdpkg-perl_1.18.24_all.deb ...
Unpacking libdpkg-perl (1.18.24) ...
Selecting previously unselected package patch.
Preparing to unpack .../34-patch_2.7.5-1+b2_amd64.deb ...
Unpacking patch (2.7.5-1+b2) ...
Selecting previously unselected package dpkg-dev.
Preparing to unpack .../35-dpkg-dev_1.18.24_all.deb ...
Unpacking dpkg-dev (1.18.24) ...
Selecting previously unselected package build-essential.
Preparing to unpack .../36-build-essential_12.3_amd64.deb ...
Unpacking build-essential (12.3) ...
Setting up libquadmath0:amd64 (7.2.0-1) ...
Setting up libgomp1:amd64 (7.2.0-1) ...
Setting up libatomic1:amd64 (7.2.0-1) ...
Setting up libgdbm3:amd64 (1.8.3-14) ...
Setting up libcc1-0:amd64 (7.2.0-1) ...
Setting up make (4.1-9.1) ...
Setting up libasan4:amd64 (7.2.0-1) ...
Setting up libcilkrts5:amd64 (7.2.0-1) ...
Setting up libubsan0:amd64 (7.2.0-1) ...
Setting up libtsan0:amd64 (7.2.0-1) ...
Setting up linux-libc-dev:amd64 (4.12.6-1) ...
Setting up perl-modules-5.26 (5.26.0-5) ...
Setting up bzip2 (1.0.6-8.1) ...
Setting up liblsan0:amd64 (7.2.0-1) ...
Setting up libmpx2:amd64 (7.2.0-1) ...
Setting up libisl15:amd64 (0.18-1) ...
Setting up patch (2.7.5-1+b2) ...
Processing triggers for libc-bin (2.24-15) ...
Setting up libperl5.26:amd64 (5.26.0-5) ...
Setting up xz-utils (5.2.2-1.3) ...
update-alternatives: using /usr/bin/xz to provide /usr/bin/lzma (lzma) in auto mode
Setting up libmpfr4:amd64 (3.1.5-1) ...
Setting up libmpc3:amd64 (1.0.3-1+b2) ...
Setting up binutils (2.29-5) ...
Setting up libc-dev-bin (2.24-15) ...
Setting up libc6-dev:amd64 (2.24-15) ...
Setting up libitm1:amd64 (7.2.0-1) ...
Setting up libgcc-7-dev:amd64 (7.2.0-1) ...
Setting up cpp-7 (7.2.0-1) ...
Setting up libstdc++-7-dev:amd64 (7.2.0-1) ...
Setting up perl (5.26.0-5) ...
update-alternatives: using /usr/bin/prename to provide /usr/bin/rename (rename) in auto mode
Setting up cpp (4:7.1.0-2) ...
Setting up gcc-7 (7.2.0-1) ...
Setting up g++-7 (7.2.0-1) ...
Setting up libdpkg-perl (1.18.24) ...
Setting up gcc (4:7.1.0-2) ...
Setting up dpkg-dev (1.18.24) ...
Setting up g++ (4:7.1.0-2) ...
update-alternatives: using /usr/bin/g++ to provide /usr/bin/c++ (c++) in auto mode
Setting up build-essential (12.3) ...
Processing triggers for libc-bin (2.24-15) ...
I: unmounting dev/ptmx filesystem
W: Could not unmount dev/ptmx: umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)
W: Retrying to unmount dev/ptmx in 5s
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

Could not unmount dev/ptmx, some programs might
still be using files in /proc (klogd?).
Please check and kill these processes manually
so that I can unmount dev/ptmx. Last umount error was:
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

Could not unmount dev/ptmx, some programs might
still be using files in /proc (klogd?).
Please check and kill these processes manually
so that I can unmount dev/ptmx. Last umount error was:
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

Could not unmount dev/ptmx, some programs might
still be using files in /proc (klogd?).
Please check and kill these processes manually
so that I can unmount dev/ptmx. Last umount error was:
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

Could not unmount dev/ptmx, some programs might
still be using files in /proc (klogd?).
Please check and kill these processes manually
so that I can unmount dev/ptmx. Last umount error was:
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

Could not unmount dev/ptmx, some programs might
still be using files in /proc (klogd?).
Please check and kill these processes manually
so that I can unmount dev/ptmx. Last umount error was:
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

Could not unmount dev/ptmx, some programs might
still be using files in /proc (klogd?).
Please check and kill these processes manually
so that I can unmount dev/ptmx. Last umount error was:
umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

umount: /var/cache/pbuilder/build/1340/dev/ptmx: target is busy
(In some cases useful info about processes that
use the device is found by lsof(8) or fuser(1).)

[-- Attachment #1.3: pbuilderrc.debian.sid.amd64 --]
[-- Type: application/octet-stream, Size: 1703 bytes --]

LOGLEVEL=I
USECOLORS=auto
BUILDPLACE=/var/cache/pbuilder/build
BUILDDIR=/build
BUILD_HOME=/nonexistent
MIRRORSITE="http://ftp.de.debian.org/debian/"
if wget -S http://proxyserver:3128 2>&1 | grep -q Server\:\ squid; then
http_proxy=http://proxyserver:3128
https_proxy=http://proxyserver:3128
ftp_proxy=http://proxyserver:3128
export http_proxy https_proxy ftp_proxy
fi
USEPROC=yes
USEDEVFS=no
USEDEVPTS=yes
USESYSFS=yes
USENETWORK=no
USERUNSHM=yes
BUILDRESULT="/var/cache/pbuilder/build-result/"
COMPONENTS="main"
APTCACHE=""
APTCACHEHARDLINK="yes"
REMOVEPACKAGES=""
HOOKDIR="/usr/lib/pbuilder/hooks/"
EATMYDATA=no
CCACHEDIR=""
export DEBIAN_FRONTEND="noninteractive"
DEBEMAIL=""
BUILDSOURCEROOTCMD="fakeroot"
PBUILDERROOTCMD="sudo -E"
PBUILDERSATISFYDEPENDSCMD="/usr/lib/pbuilder/pbuilder-satisfydepends-apt"
ALLOWUNTRUSTED=no
export APTGETOPT=()
export APTITUDEOPT=()
DEBDELTA=no
DEBBUILDOPTS=""
DEB_BUILD_OPTIONS="parallel=$(($(nproc) * 2)) $DEB_BUILD_OPTIONS"
export DEB_BUILD_OPTIONS
APTCONFDIR="/usr/lib/pbuilder/aptconfdir"
BUILDUSERNAME="pbuilder"
BUILDUSERID="$(getent passwd $BUILDUSERNAME | cut -d\: -f3)"
BINDMOUNTS=""
DEBOOTSTRAPOPTS=(
'--variant=buildd'
'--force-check-gpg'
)
unset DEBOOTSTRAPOPTS
DEBOOTSTRAPOPTS=(
'--flavour=minimal'
'--include=gnupg'
)
APTKEYRINGS=( "/usr/share/keyrings/debian-archive-keyring.gpg" )
export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
export SHELL=/bin/dash
DEBOOTSTRAP="cdebootstrap"
PKGNAME_LOGFILE_EXTENSION="_$(dpkg --print-architecture).build"
PKGNAME_LOGFILE=""
AUTOCLEANAPTCACHE=""
COMPRESSPROG="gzip"
CONFDIR="/etc/pbuilder/conf_files"
BASETGZ="/var/cache/pbuilder/debian.sid.amd64.tgz"
DEBOOTSTRAPOPTS+=( '--arch=amd64' )

[-- Attachment #2: Digitale Signatur von OpenPGP --]
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