git archive generates tar with malformed pax extended attribute

From: Keegan Carruthers-Smith <keegan.csmith@gmail.com>
Date: May 24, 2019, 06:45 UTC
Message-ID: <CAMVcy0Q0TL6uEGR2NeudJrOiXdQ87XcducL0EwMidWucjk5XYw@mail.gmail.com>

Hello,

git archive can generate a malformed tar archive. bsdtar reports the error "tar: Ignoring malformed pax extended attribute" when reading the archive. Go's "tar/archive" package also reports the error "archive/tar: invalid tar header". However, BusyBox's tar does not report the error (unsure if it just has less error logging).

I can reproduce this when generating the tar on linux and mac. I tested this with "git version 2.21.0" and a build of next I did today: "git version 2.22.0.rc1.257.g3120a18244"

Reproduction:

  $ git clone https://github.com/SSW-SCIENTIFIC/NNDD.git
  $ cd NNDD
  $ git archive --format tar c21b98da2ca7f007230e696b2eda5da6589fe137
| tar tf - > /dev/null
  tar: Ignoring malformed pax extended attribute
  tar: Error exit delayed from previous errors.

Kind Regards, Keegan