linux-kernel - [BUG] distclean gets confused by cp -sfR

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <bd2b5d32-1cba-78c0-f702-5aaddbcd5b33@landley.net>
Date:   Sun, 16 Feb 2020 05:59:07 -0600
From:   Rob Landley <rob@...dley.net>
To:     linux-kernel@...r.kernel.org
Subject: [BUG] distclean gets confused by cp -sfR

If you copy a dirty linux dir as a tree of symlinks and then "make distclean" in
the copy, most of the .o files get skipped.

  $ cd linux; make defconfig; make -j $(nproc); cd ..
  $ cp -sfR $PWD/linux boing
  $ cd boing
  $ make distclean
  $ find . -name '*.o' | wc
    892     892   20017

Reproduced in commit gb19e8c684703 on x86-64 (devuan ascii).