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Filename Latest commit message Latest commit date
Nick Desaulniers 7a92396bf8 gcov: re-fix clang-11+ support
commit 9562fd132985ea9185388a112e50f2a51557827d upstream.

LLVM changed the expected function signature for llvm_gcda_emit_function()
in the clang-11 release.  Users of clang-11 or newer may have noticed
their kernels producing invalid coverage information:

  $ llvm-cov gcov -a -c -u -f -b <input>.gcda -- gcno=<input>.gcno
  1 <func>: checksum mismatch, \
    (<lineno chksum A>, <cfg chksum B>) != (<lineno chksum A>, <cfg chksum C>)
  2 Invalid .gcda File!
  ...

Fix up the function signatures so calling this function interprets its
parameters correctly and computes the correct cfg checksum.  In
particular, in clang-11, the additional checksum is no longer optional.

Link: https://reviews.llvm.org/rG25544ce2df0daa4304c07e64b9c8b0f7df60c11d
Link: https://lkml.kernel.org/r/20210408184631.1156669-1-ndesaulniers@google.com
Reported-by: Prasad Sodagudi <psodagud@quicinc.com>
Tested-by: Prasad Sodagudi <psodagud@quicinc.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Cc: <stable@vger.kernel.org>	[5.4+]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-04-14 08:24:10 +02:00
arch bpf, x86: Validate computation of branch displacements for x86-32 2021-04-10 13:34:31 +02:00
block
certs
crypto
Documentation
drivers drm/i915: Fix invalid access to ACPI _DSM objects 2021-04-14 08:24:10 +02:00
fs cifs: Silently ignore unknown oplock break handle 2021-04-10 13:34:31 +02:00
include
init init/Kconfig: make COMPILE_TEST depend on HAS_IOMEM 2021-04-10 13:34:32 +02:00
ipc
kernel gcov: re-fix clang-11+ support 2021-04-14 08:24:10 +02:00
lib
LICENSES
mm
net net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh 2021-04-14 08:24:10 +02:00
samples
scripts
security
sound ASoC: intel: atom: Stop advertising non working S24LE support 2021-04-14 08:24:09 +02:00
tools
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
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Makefile Linux 5.4.111 2021-04-10 13:34:32 +02:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.