Disco merge request: https://code.launchpad.net/~rafaeldtinoco/ubuntu/+source/iproute2/+git/iproute2/+merge/368410
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to iproute2 in Ubuntu. https://bugs.launchpad.net/bugs/1831775 Title: ss seems broken when using multiple filters in the same cmdline Status in iproute2 package in Ubuntu: Confirmed Status in iproute2 source package in Cosmic: In Progress Status in iproute2 source package in Disco: In Progress Status in iproute2 source package in Eoan: Confirmed Bug description: [Impact] * ss won't be able to run commands with single filters inside parentheses, like: "( sport == :X )", for example. * A workaround is to remove "( )" from single filters, since it looks the issue does not affect 2 filters being put together in the same parentheses, like: " ( X and Y ) and Y " instead of ( X and Y ) and ( Y )". * CTDB is unable to use ss filter to obtain nodes public IP addresses in order to fail over services (LP: #722201). [Test Case] * Having an Ubuntu Cosmic, Disco or Eoan, try to execute the following command: $ ss -tn state established "( src [172.16.17.2] || src [172.16.17.3] )" "( sport == :2049 )" Independent of the IPs or ports being used. Copying and pasting the command should be enough for you to know if you are affected. Bad Result: ss: bison bellows (while parsing filter): "syntax error!" Sorry. Usage: ss [ OPTIONS ] ss [ OPTIONS ] [ FILTER ] -h, --help this message ... Expected Result: Recv-Q Send-Q Local Address:Port Peer Address:Port ... * test case was discovered during CTDB scripts execution [Regression Potential] * biggest risk would be to affect ss interpreter (worst case scenario). * the proposed patch is based in upstream fix and was tested against the same issue reported as the reproducer (above) and some other generic ss commands. * any problem here is unlikely to change iproute2 most important command interpreter, "ip", since the patch is applied against ss code. [Other Info] ORIGINAL DESCRIPTION: Investigating an issue for CTDB (LP: #722201), after suggesting a fix on ss syntax to CTDB upstream project, we discovered that "ss" seems to be broken in Ubuntu since Ubuntu Cosmic: ---- # Debian Sid inaddy@workstation:~$ ss -tn state established "( src [172.16.17.2] || src [172.16.17.3] )" "( sport == :2049 )" Recv-Q Send-Q Local Address:Port Peer Address:Port # Ubuntu Ubuntu 16.04 LTS (Xenial Xerus) (c)inaddy@xenial:~$ ss -tn state established "( src [172.16.17.2] || src [172.16.17.3] )" "( sport == :2049 )" Recv-Q Send-Q Local Address:Port Peer Address:Port # Ubuntu 18.04 LTS (Bionic Beaver) (c)inaddy@bionic:~$ ss -tn state established "( src [172.16.17.2] || src [172.16.17.3] )" "( sport == :2049 )" Recv-Q Send-Q Local Address:Port Peer Address:Port # Ubuntu 18.10 (Cosmic Cuttlefish) (c)inaddy@cosmic:~$ ss -tn state established "( src [172.16.17.2] || src [172.16.17.3] )" "( sport == :2049 )" ss: bison bellows (while parsing filter): "syntax error!" Sorry. Usage: ss [ OPTIONS ] ss [ OPTIONS ] [ FILTER ] -h, --help this message # Ubuntu 19.04 (Disco Dingo) (c)inaddy@disco:~$ ss -tn state established "( src [172.16.17.2] || src [172.16.17.3] )" "( sport == :2049 )" ss: bison bellows (while parsing filter): "syntax error!" Sorry. Usage: ss [ OPTIONS ] ss [ OPTIONS ] [ FILTER ] # Ubuntu 19.10 (Eoan Ermine) (c)inaddy@eoan:~$ ss -tn state established "( src [172.16.17.2] || src [172.16.17.3] )" "( sport == :2049 )" ss: bison bellows (while parsing filter): "syntax error!" Sorry. Usage: ss [ OPTIONS ] ss [ OPTIONS ] [ FILTER ] ---- I have generated a pkg using upstream iproute2 source code and it does not suffer the issue. I have generated a package using Ubuntu cosmic source package, without debian/patches/*, and verified the issue still persists (not being introduced by any of our packages, and being present if vanilla upstream version used in Cosmic). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iproute2/+bug/1831775/+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
