Your message dated Sat, 12 Jan 2019 18:50:15 +0000
with message-id <e1giomj-0003n8...@fasolo.debian.org>
and subject line Bug#915834: fixed in irqbalance 1.5.0-2
has caused the Debian Bug report #915834,
regarding Breaks SSH connections, listens on \0
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

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-- 
915834: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=915834
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Package: irqbalance
Version: 1.5.0-0.1
Severity: critical

Thanks to waldi for his help in diagnosing this.

With irqbalance installed, it is no longer possible to connect to
remote systems using SSH when SSH_AUTH_SOCK is unset.

  % SSH_AUTH_SOCK= ssh -S none -v cymbaline true
  […]
  debug1: rekey after 134217728 blocks

and then the client just stays there, indefinitely.

strace reveals:

  socket(AF_UNIX, SOCK_STREAM, 0)         = 4
  fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
  connect(4, {sa_family=AF_UNIX, 
sun_path=@"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"},
 110) = 0
  write(4, "\0\0\0\1", 4)                 = 4
  write(4, "\v", 1)                       = 1
  read(4,

and lsof identifies this socket as

  ssh     28605 madduck    4u  unix 0x0000000094bc2389      0t0  287876 
type=STREAM

So diving into this, we stumbled over:

  netstat -nap:
  unix  2      [ ACC ]     STREAM     LISTENING     23121    
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

and then looked at sss -xenp output:

  u_str             ESTAB               0                    0                  
  
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
 29 3502                                                * 289678                
   users:(("irqbalance",pid=1455,fd=22)) <->
  u_str             ESTAB               1                    0                  
  
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
 29 2010                                                * 0                     
   users:(("irqbalance",pid=1455,fd=19)) ---
  u_str             ESTAB               0                    0                  
  
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
 27 9132                                                * 0                     
   users:(("irqbalance",pid=1455,fd=12)) ---

and sure enough, purging irqbalance makes SSH work again.

-- System Information:
Debian Release: buster/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.18.0-3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_NZ, LC_CTYPE=en_NZ.UTF-8 (charmap=UTF-8), LANGUAGE=en_NZ:en 
(charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages irqbalance depends on:
ii  debconf [debconf-2.0]  1.5.69
ii  libc6                  2.28-2
ii  libcap-ng0             0.7.9-1+b1
ii  libglib2.0-0           2.58.1-2
ii  libncursesw6           6.1+20181013-1
ii  libnuma1               2.0.12-1
ii  libsystemd0            239-14
ii  libtinfo6              6.1+20181013-1
ii  lsb-base               10.2018112800

irqbalance recommends no packages.

irqbalance suggests no packages.


-- 
 .''`.   martin f. krafft <madduck@d.o> @martinkrafft
: :'  :  proud Debian developer
`. `'`   http://people.debian.org/~madduck
  `-  Debian - when you have better things to do than fixing systems

Attachment: digital_signature_gpg.asc
Description: Digital GPG signature (see http://martin-krafft.net/gpg/sig-policy/999bbcc4/current)


--- End Message ---
--- Begin Message ---
Source: irqbalance
Source-Version: 1.5.0-2

We believe that the bug you reported is fixed in the latest version of
irqbalance, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 915...@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Andreas Henriksson <andr...@fatal.se> (supplier of updated irqbalance package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmas...@ftp-master.debian.org)


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Format: 1.8
Date: Sat, 12 Jan 2019 19:12:28 +0100
Source: irqbalance
Binary: irqbalance
Architecture: source
Version: 1.5.0-2
Distribution: unstable
Urgency: medium
Maintainer: Debian QA Group <packa...@qa.debian.org>
Changed-By: Andreas Henriksson <andr...@fatal.se>
Description:
 irqbalance - Daemon to balance interrupts for SMP systems
Closes: 915834
Changes:
 irqbalance (1.5.0-2) unstable; urgency=medium
 .
   * QA Upload.
   * Add debian/patches/fix-permissions-for-unix-socket.patch (Closes: #915834)
   * Add Vcs-* fields for new salsa git repository
   * Orphan package
Checksums-Sha1:
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 0118dec2701b6d17f65549c702fd173303c78c70 18624 irqbalance_1.5.0-2.debian.tar.xz
 8a00fdf727c6b013319952ce9ea82522933166c4 7002 
irqbalance_1.5.0-2_amd64.buildinfo
Checksums-Sha256:
 b12d17e61d07b69dd92b9b7ff44d0c5a866036214dcda2627a6dc9e3e93b4499 2173 
irqbalance_1.5.0-2.dsc
 e596dc13c192ff4936de5b79dad9eb46fda43a64b525d0c92c07ee4b018311f0 18624 
irqbalance_1.5.0-2.debian.tar.xz
 53fa7daef090c7ab1d79fef2e724c33c887e66ffdb359997dc12db99204106e3 7002 
irqbalance_1.5.0-2_amd64.buildinfo
Files:
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 0dfc11087df11b98206fa82d97301449 18624 utils optional 
irqbalance_1.5.0-2.debian.tar.xz
 2c9e95041d08d1c33a7855e8c15f1010 7002 utils optional 
irqbalance_1.5.0-2_amd64.buildinfo

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--- End Message ---

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