Bug#1103242: /bin/ip: "ip mon" does not exit when output is gone

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From	Simon Richter <sjr@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1103242: /bin/ip: "ip mon" does not exit when output is gone
Date	Tue, 15 Apr 2025 13:30:01 +0200
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Package: iproute2
Version: 6.1.0-3
Severity: minor
File: /bin/ip
Tags: upstream
X-Debbugs-Cc: sjr@debian.org

Hi,

I started "ip mon" in the background, and closed the shell and the terminal.

The "ip" command is still running, receiving netlink messages and writing to
stdout, receiving EIO for this attempt.

Monitor mode should probably exit when it cannot write output.

   Simon

-- System Information:
Debian Release: 12.9
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable-debug'), (500, 'stable')
merged-usr: no
Architecture: amd64 (x86_64)
Foreign Architectures: i386, armhf

Kernel: Linux 6.1.0-31-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages iproute2 depends on:
ii  debconf [debconf-2.0]  1.5.82
ii  libbpf1                1:1.1.0-1
ii  libbsd0                0.11.7-2
ii  libc6                  2.36-9+deb12u9
ii  libcap2                1:2.66-4
ii  libcap2-bin            1:2.66-4
ii  libdb5.3               5.3.28+dfsg2-1
ii  libelf1                0.188-2.1
ii  libmnl0                1.0.4-3
ii  libselinux1            3.4-1+b6
ii  libtirpc3              1.3.3+ds-1
ii  libxtables12           1.8.9-2

Versions of packages iproute2 recommends:
ii  libatm1  1:2.5.1-4+b2

Versions of packages iproute2 suggests:
pn  iproute2-doc  <none>
ii  python3       3.11.2-1+b1

-- debconf information excluded

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Thread

Bug#1103242: /bin/ip: "ip mon" does not exit when output is gone Simon Richter <sjr@debian.org> - 2025-04-15 13:30 +0200
  Processed: Re: Bug#1103242: /bin/ip: "ip mon" does not exit when  output is gone "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-04-15 16:40 +0200
  Bug#1103242: /bin/ip: "ip mon" does not exit when output is gone Luca Boccassi <luca.boccassi@gmail.com> - 2025-04-15 16:40 +0200
    Bug#1103242: /bin/ip: "ip mon" does not exit when output is gone Simon Richter <sjr@debian.org> - 2025-04-16 01:10 +0200
      Bug#1103242: /bin/ip: "ip mon" does not exit when output is gone Luca Boccassi <bluca@debian.org> - 2025-04-16 12:40 +0200
  Processed: Re: Bug#1103242: /bin/ip: "ip mon" does not exit when  output is gone "Debian Bug Tracking System" <owner@bugs.debian.org> - 2025-04-15 16:40 +0200

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