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  1. 07 11月, 2015 4 次提交
  3. 21 10月, 2015 2 次提交
    • D
      KEYS: Provide a script to extract a module signature · 4adc605e
      由 David Howells 提交于 
      The supplied script takes a signed module file and extracts the tailmost
signature (there could theoretically be more than one) and dumps all or
part of it or the unsigned file to stdout.

Call as:

	scripts/extract-module-sig.pl -[0adnks] module-file >out

where the initial flag indicates which bit of the signed file you want dumping
to stdout:

 (*) "-0".  Dumps the unsigned data with the signature stripped.

 (*) "-a".  Dumps all of the signature data, including the magic number.

 (*) "-d".  Dumps the signature information block as a sequence of decimal
     	    numbers in text form with spaces between (crypto algorithm type,
     	    hash type, identifier type, signer's name length, key identifier
     	    length and signature length).

 (*) "-n".  Dumps the signer's name contents.

 (*) "-k".  Dumps the key identifier contents.

 (*) "-s".  Dumps the cryptographic signature contents.

In the case that the signature is a PKCS#7 (or CMS) message, -n and -k will
print a warning to stderr and dump nothing to stdout, but will otherwise
complete okay; the entire PKCS#7/CMS message will be dumped by "-s"; and "-d"
will show "0 0 2 0 0 <pkcs#7-msg-len>".
Signed-off-by: NDavid Howells <dhowells@redhat.com>
      4adc605e
    • D
      KEYS: Provide a script to extract the sys cert list from a vmlinux file · 2221a6ee
      由 David Howells 提交于 
      The supplied script takes a vmlinux file - and if necessary a System.map
file - locates the system certificates list and extracts it to the named
file.

Call as:

    ./scripts/extract-sys-certs vmlinux certs

if vmlinux contains symbols and:

    ./scripts/extract-sys-certs -s System.map vmlinux certs

if it does not.

It prints something like the following to stdout:

	Have 27 sections
	No symbols in vmlinux, trying System.map
	Have 80088 symbols
	Have 1346 bytes of certs at VMA 0xffffffff8201c540
	Certificate list in section .init.data
	Certificate list at file offset 0x141c540

If vmlinux contains symbols then that is used rather than System.map - even
if one is given.
Signed-off-by: NDavid Howells <dhowells@redhat.com>
      2221a6ee
  5. 18 10月, 2015 22 次提交
  7. 17 10月, 2015 1 次提交
  9. 15 10月, 2015 1 次提交
    • M
      scripts/kconfig/Makefile: Fix KBUILD_DEFCONFIG check when building with O= · bd960f09
      由 Michael Ellerman 提交于 
      My recent commit d2036f30 ("scripts/kconfig/Makefile: Allow
KBUILD_DEFCONFIG to be a target"), contained a bug in that when it
checks if KBUILD_DEFCONFIG is a file it forgets to prepend $(srctree) to
the path.

This causes the build to fail when building out of tree (with O=), and
when the value of KBUILD_DEFCONFIG is 'defconfig'. In that case we will
fail to find the 'defconfig' file, because we look in the build
directory not $(srctree), and so we will call Make again with
'defconfig' as the target. From there we loop infinitely calling 'make
defconfig' again and again.

The fix is simple, we need to look for the file under $(srctree).

Fixes: d2036f30 ("scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target")
Reported-by: NOlof Johansson <olof@lixom.net>
Acked-by: NMichal Marek <mmarek@suse.com>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
      bd960f09
  11. 13 10月, 2015 1 次提交
    • A
      arm64: add KASAN support · 39d114dd
      由 Andrey Ryabinin 提交于 
      This patch adds arch specific code for kernel address sanitizer
(see Documentation/kasan.txt).

1/8 of kernel addresses reserved for shadow memory. There was no
big enough hole for this, so virtual addresses for shadow were
stolen from vmalloc area.

At early boot stage the whole shadow region populated with just
one physical page (kasan_zero_page). Later, this page reused
as readonly zero shadow for some memory that KASan currently
don't track (vmalloc).
After mapping the physical memory, pages for shadow memory are
allocated and mapped.

Functions like memset/memmove/memcpy do a lot of memory accesses.
If bad pointer passed to one of these function it is important
to catch this. Compiler's instrumentation cannot do this since
these functions are written in assembly.
KASan replaces memory functions with manually instrumented variants.
Original functions declared as weak symbols so strong definitions
in mm/kasan/kasan.c could replace them. Original functions have aliases
with '__' prefix in name, so we could call non-instrumented variant
if needed.
Some files built without kasan instrumentation (e.g. mm/slub.c).
Original mem* function replaced (via #define) with prefixed variants
to disable memory access checks for such files.
Signed-off-by: NAndrey Ryabinin <ryabinin.a.a@gmail.com>
Tested-by: NLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
      39d114dd
  13. 12 10月, 2015 1 次提交
  15. 10 10月, 2015 2 次提交
  17. 01 10月, 2015 1 次提交
    • M
      scripts/kconfig/Makefile: Allow KBUILD_DEFCONFIG to be a target · d2036f30
      由 Michael Ellerman 提交于 
      Arch Makefiles can set KBUILD_DEFCONFIG to tell kbuild the name of the
defconfig that should be built by default.

However currently there is an assumption that KBUILD_DEFCONFIG points to
a file at arch/$(SRCARCH)/configs/$(KBUILD_DEFCONFIG).

We would like to use a target, using merge_config, as our defconfig, so
adapt the logic in scripts/kconfig/Makefile to allow that.

To minimise the chance of breaking anything, we first check if
KBUILD_DEFCONFIG is a file, and if so we do the old logic. If it's not a
file, then we call the top-level Makefile with KBUILD_DEFCONFIG as the
target.
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Acked-by: NMichal Marek <mmarek@suse.com>
      d2036f30
  19. 28 9月, 2015 1 次提交
    • B
      DocBook: Use a fixed encoding for output · b479bfd0
      由 Ben Hutchings 提交于 
      Currently the encoding of documents generated by DocBook depends on
the current locale.  Make the output reproducible independently of
the locale, by setting the encoding to UTF-8 (LC_CTYPE=C.UTF-8) by
preference, or ASCII (LC_CTYPE=C) as a fallback.

LC_CTYPE can normally be overridden by LC_ALL, but the top-level
Makefile unsets that.
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
[jc: added check-lc_ctype to .gitignore]
Signed-off-by: NJonathan Corbet <corbet@lwn.net>
      b479bfd0
  21. 25 9月, 2015 2 次提交
  23. 21 9月, 2015 2 次提交