** Description changed: [Impact] The pgrep -f and pkill -f commands are unable to find processes strings in processes which are beyond the 4096th character. This often happens with Java command lines with long classpaths on the command line. [Test Case] A quick test to reproduce this is to vi a file using a filename over 4k $ vi $(seq 1 1250| paste -s -d'_')_foo.txt) and leave vi running then run from another terminal $ pgrep -af 'foo.txt' to find it. Without the fix, one will only see the first 4096 chars, while the expected behaviour would be: $ pgrep -af 'foo.txt' 27667 vi 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[Potential Regression] The proposal merge are a few months old, and nothing upstream involvement since then. If we fix that in Ubuntu, we will have to carry the patch at each release until Upstream take action. The patch is simple and easy to carry over. The potential regression could be that one discard the patch, and re- introduce the previous CMDSTRSIZE value. I don't foresee any problem in increasing the value from "4096 to "16384". IMHO, it's a little bit too much, but will benefit user who uses java application with long classpath. [Other Infos] This bug is a mirror of what has already been reported in GitLab, through the merge request #85 [1], and has been previously reported at the merge request #80 [2], with no response/reply. Let me know if further information is needed, at this point, to proceed. Thanks! [1] https://gitlab.com/procps-ng/procps/merge_requests/85 [2] https://gitlab.com/procps-ng/procps/merge_requests/80 + + Upstream discussion: + https://www.freelists.org/post/procps/Extending-pgrep-to-more-than-4k-cmd-length
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1839329 Title: pgrep: Use POSIX _SC_ARG_MAX for maximum pgrep -f command line length To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/procps/+bug/1839329/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
