Here are two alternative ways to demonstrate this command line parsing bug: 1. In a bash terminal say: trap "I received an invalid TERM signal" SIGTERM /bin/kill -s TERM -15 Note that bash ignores the TERM unless this trap is present, so the TRAP makes it clear what is going on. 2. In a bash terminal say: /bin/kill -s KILL -15 Bash will die along with other user processes due to SIGKILL and the user will be returned to a login prompt.
Note that 15 here is just a stand-in for any process group. This bug affects all uses of /bin/kill on valid process groups where the process group's first digit is a 1. If the process group's first digit is not a 1 then the first digit will be used as the target of the process group kill. /bin/kill -s TERM -203432 will send TERM to process group 2. Note that the bash built-in does not have this bug. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to procps in Ubuntu. https://bugs.launchpad.net/bugs/1577297 Title: echo | xargs kill -15 kills running window session Status in procps package in Ubuntu: Confirmed Bug description: Running the command $ echo | xargs kill -15 kills everything in the current window session. If run from tty1: $ echo | xargs kill -15 Terminated And the window session is also killed. Same command tested on CentOS 7, running procps 3.3.10, shows kill command help. Same command tested on Arch Linux, running procps 3.3.11, shows "kill: not enough arguments". ProblemType: Bug ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: KDE Date: Sun May 1 21:37:15 2016 Dependencies: adduser 3.113+nmu3ubuntu4 apt 1.2.10ubuntu1 apt-utils 1.2.10ubuntu1 coreutils 8.25-2ubuntu2 debconf 1.5.58ubuntu1 debconf-i18n 1.5.58ubuntu1 debianutils 4.7 dpkg 1.18.4ubuntu1 e2fslibs 1.42.13-1ubuntu1 e2fsprogs 1.42.13-1ubuntu1 gcc-5-base 5.3.1-14ubuntu2 gcc-6-base 6.0.1-0ubuntu1 gnupg 1.4.20-1ubuntu3 gpgv 1.4.20-1ubuntu3 init-system-helpers 1.29ubuntu1 initscripts 2.88dsf-59.3ubuntu2 insserv 1.14.0-5ubuntu3 libacl1 2.2.52-3 libapt-inst2.0 1.2.10ubuntu1 libapt-pkg5.0 1.2.10ubuntu1 libattr1 1:2.4.47-2 libaudit-common 1:2.4.5-1ubuntu2 libaudit1 1:2.4.5-1ubuntu2 libblkid1 2.27.1-6ubuntu3 libbz2-1.0 1.0.6-8 libc6 2.23-0ubuntu3 libcomerr2 1.42.13-1ubuntu1 libdb5.3 5.3.28-11 libfdisk1 2.27.1-6ubuntu3 libgcc1 1:6.0.1-0ubuntu1 libgcrypt20 1.6.5-2 libgpg-error0 1.21-2ubuntu1 libgpm2 1.20.4-6.1 liblocale-gettext-perl 1.07-1build1 liblz4-1 0.0~r131-2ubuntu2 liblzma5 5.1.1alpha+20120614-2ubuntu2 libmount1 2.27.1-6ubuntu3 libncurses5 6.0+20160213-1ubuntu1 libncursesw5 6.0+20160213-1ubuntu1 libpam-modules 1.1.8-3.2ubuntu2 libpam-modules-bin 1.1.8-3.2ubuntu2 libpam0g 1.1.8-3.2ubuntu2 libpcre3 2:8.38-3.1 libprocps4 2:3.3.10-4ubuntu2 libreadline6 6.3-8ubuntu2 libselinux1 2.4-3build2 libsemanage-common 2.3-1build3 libsemanage1 2.3-1build3 libsepol1 2.4-2 libsmartcols1 2.27.1-6ubuntu3 libss2 1.42.13-1ubuntu1 libstdc++6 5.3.1-14ubuntu2 libsystemd0 229-4ubuntu4 libtext-charwidth-perl 0.04-7build5 libtext-iconv-perl 1.7-5build4 libtext-wrapi18n-perl 0.06-7.1 libtinfo5 6.0+20160213-1ubuntu1 libudev1 229-4ubuntu4 libusb-0.1-4 2:0.1.12-28 libustr-1.0-1 1.0.4-5 libuuid1 2.27.1-6ubuntu3 lsb-base 9.20160110 mount 2.27.1-6ubuntu3 multiarch-support 2.23-0ubuntu3 passwd 1:4.2-3.1ubuntu5 perl-base 5.22.1-9 psmisc 22.21-2.1build1 readline-common 6.3-8ubuntu2 sensible-utils 0.0.9 sysv-rc 2.88dsf-59.3ubuntu2 sysvinit-utils 2.88dsf-59.3ubuntu2 tar 1.28-2.1 ubuntu-keyring 2012.05.19 util-linux 2.27.1-6ubuntu3 uuid-runtime 2.27.1-6ubuntu3 zlib1g 1:1.2.8.dfsg-2ubuntu4 DistroRelease: Ubuntu 16.04 EcryptfsInUse: Yes InstallationDate: Installed on 2015-05-29 (338 days ago) InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 Package: procps 2:3.3.10-4ubuntu2 PackageArchitecture: amd64 ProcEnviron: LANGUAGE= LC_TIME=nb_NO.UTF-8 LC_MONETARY=nb_NO.UTF-8 TERM=xterm LC_COLLATE=nb_NO.UTF-8 PATH=(custom, no user) LC_ADDRESS=nb_NO.UTF-8 XDG_RUNTIME_DIR=<set> LC_TELEPHONE=nb_NO.UTF-8 LANG=en_GB.UTF-8 SHELL=/bin/bash LC_NAME=nb_NO.UTF-8 LC_MEASUREMENT=nb_NO.UTF-8 LC_IDENTIFICATION=nb_NO.UTF-8 LC_NUMERIC=nb_NO.UTF-8 LC_PAPER=nb_NO.UTF-8 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 SourcePackage: procps Tags: xenial Uname: Linux 4.4.0-21-generic x86_64 UpgradeStatus: Upgraded to xenial on 2016-04-22 (9 days ago) _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/procps/+bug/1577297/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
