02 Nov, 2017
1 commit
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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
15 Apr, 2015
2 commits
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The arch_randomize_brk() function is used on several architectures,
even those that don't support ET_DYN ASLR. To avoid bulky extern/#define
tricks, consolidate the support under CONFIG_ARCH_HAS_ELF_RANDOMIZE for
the architectures that support it, while still handling CONFIG_COMPAT_BRK.Signed-off-by: Kees Cook
Cc: Hector Marco-Gisbert
Cc: Russell King
Reviewed-by: Ingo Molnar
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Alexander Viro
Cc: Oleg Nesterov
Cc: Andy Lutomirski
Cc: "David A. Long"
Cc: Andrey Ryabinin
Cc: Arun Chandran
Cc: Yann Droneaud
Cc: Min-Hua Chen
Cc: Paul Burton
Cc: Alex Smith
Cc: Markos Chandras
Cc: Vineeth Vijayan
Cc: Jeff Bailey
Cc: Michael Holzheu
Cc: Ben Hutchings
Cc: Behan Webster
Cc: Ismael Ripoll
Cc: Jan-Simon Mller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When an architecture fully supports randomizing the ELF load location,
a per-arch mmap_rnd() function is used to find a randomized mmap base.
In preparation for randomizing the location of ET_DYN binaries
separately from mmap, this renames and exports these functions as
arch_mmap_rnd(). Additionally introduces CONFIG_ARCH_HAS_ELF_RANDOMIZE
for describing this feature on architectures that support it
(which is a superset of ARCH_BINFMT_ELF_RANDOMIZE_PIE, since s390
already supports a separated ET_DYN ASLR from mmap ASLR without the
ARCH_BINFMT_ELF_RANDOMIZE_PIE logic).Signed-off-by: Kees Cook
Cc: Hector Marco-Gisbert
Cc: Russell King
Reviewed-by: Ingo Molnar
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Ralf Baechle
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Alexander Viro
Cc: Oleg Nesterov
Cc: Andy Lutomirski
Cc: "David A. Long"
Cc: Andrey Ryabinin
Cc: Arun Chandran
Cc: Yann Droneaud
Cc: Min-Hua Chen
Cc: Paul Burton
Cc: Alex Smith
Cc: Markos Chandras
Cc: Vineeth Vijayan
Cc: Jeff Bailey
Cc: Michael Holzheu
Cc: Ben Hutchings
Cc: Behan Webster
Cc: Ismael Ripoll
Cc: Jan-Simon Mller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
