02 Nov, 2017

1 commit

  • Many source files in the tree are missing licensing information, which
    makes it harder for compliance tools to determine the correct license.

    By default all files without license information are under the default
    license of the kernel, which is GPL version 2.

    Update the files which contain no license information with the 'GPL-2.0'
    SPDX license identifier. The SPDX identifier is a legally binding
    shorthand, which can be used instead of the full boiler plate text.

    This patch is based on work done by Thomas Gleixner and Kate Stewart and
    Philippe Ombredanne.

    How this work was done:

    Patches were generated and checked against linux-4.14-rc6 for a subset of
    the use cases:
    - file had no licensing information it it.
    - file was a */uapi/* one with no licensing information in it,
    - file was a */uapi/* one with existing licensing information,

    Further patches will be generated in subsequent months to fix up cases
    where non-standard license headers were used, and references to license
    had to be inferred by heuristics based on keywords.

    The analysis to determine which SPDX License Identifier to be applied to
    a file was done in a spreadsheet of side by side results from of the
    output of two independent scanners (ScanCode & Windriver) producing SPDX
    tag:value files created by Philippe Ombredanne. Philippe prepared the
    base worksheet, and did an initial spot review of a few 1000 files.

    The 4.13 kernel was the starting point of the analysis with 60,537 files
    assessed. Kate Stewart did a file by file comparison of the scanner
    results in the spreadsheet to determine which SPDX license identifier(s)
    to be applied to the file. She confirmed any determination that was not
    immediately clear with lawyers working with the Linux Foundation.

    Criteria used to select files for SPDX license identifier tagging was:
    - Files considered eligible had to be source code files.
    - Make and config files were included as candidates if they contained >5
    lines of source
    - File already had some variant of a license header in it (even if
    Reviewed-by: Philippe Ombredanne
    Reviewed-by: Thomas Gleixner
    Signed-off-by: Greg Kroah-Hartman

    Greg Kroah-Hartman
     

14 Jul, 2016

1 commit

  • For 4K LBA or very large disks, atari_partition can easily get tricked
    into thinking it has found an Atari partition table. Depending on the
    data in the disk, it ends up creating partitions with awkward lengths.

    We saw logs like this while playing with fio.

    [5.625867] nvme2n1: AHDI p2
    [5.625872] nvme2n1: p2 size 2910030523 extends beyond EOD, truncated

    People has had issues with misinterpreted AHDI partition tables for a long
    time, see this BSD thread from 1995, for example.

    https://mail-index.netbsd.org/port-atari/1995/11/19/0001.html

    Since the atari partition, according to the spec, doesn't even support
    sector sizes with more than 512, a quick sanity check is reasonable to
    just bail out early, before even attempting to read sector 0.

    Signed-off-by: Gabriel Krisman Bertazi
    Signed-off-by: Jens Axboe

    Gabriel Krisman Bertazi
     

04 Jan, 2012

1 commit