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Revision bc8fbc5f305aecf63423da91e5faf4c0ce40bf38 authored by Marco Elver on 26 February 2021, 01:19:31 UTC, committed by Linus Torvalds on 26 February 2021, 17:41:02 UTC 
kfence: add test suite
 
Add KFENCE test suite, testing various error detection scenarios. Makes
use of KUnit for test organization. Since KFENCE's interface to obtain
error reports is via the console, the test verifies that KFENCE outputs
expected reports to the console.

[elver@google.com: fix typo in test]
  Link: https://lkml.kernel.org/r/X9lHQExmHGvETxY4@elver.google.com
[elver@google.com: show access type in report]
  Link: https://lkml.kernel.org/r/20210111091544.3287013-2-elver@google.com

Link: https://lkml.kernel.org/r/20201103175841.3495947-9-elver@google.com
Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Marco Elver <elver@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Co-developed-by: Alexander Potapenko <glider@google.com>
Reviewed-by: Jann Horn <jannh@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christopher Lameter <cl@linux.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joern Engel <joern@purestorage.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: SeongJae Park <sjpark@amazon.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Raw File
nsdeps 
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# Linux kernel symbol namespace import generator
#
# This script requires a minimum spatch version.
SPATCH_REQ_VERSION="1.0.4"

DIR="$(dirname $(readlink -f $0))/.."
SPATCH="`which ${SPATCH:=spatch}`"
if [ ! -x "$SPATCH" ]; then
	echo 'spatch is part of the Coccinelle project and is available at http://coccinelle.lip6.fr/'
	exit 1
fi

SPATCH_VERSION=$($SPATCH --version | head -1 | awk '{print $3}')

if ! { echo "$SPATCH_REQ_VERSION"; echo "$SPATCH_VERSION"; } | sort -CV ; then
	echo "spatch needs to be version $SPATCH_REQ_VERSION or higher"
	exit 1
fi

if [ "$KBUILD_EXTMOD" ]; then
	src_prefix=
else
	src_prefix=$srctree/
fi

generate_deps_for_ns() {
	$SPATCH --very-quiet --in-place --sp-file \
		$srctree/scripts/coccinelle/misc/add_namespace.cocci -D nsdeps -D ns=$1 $2
}

generate_deps() {
	local mod=${1%.ko:}
	shift
	local namespaces="$*"
	local mod_source_files="`cat $mod.mod | sed -n 1p                      \
					      | sed -e 's/\.o/\.c/g'           \
					      | sed "s|[^ ]* *|${src_prefix}&|g"`"
	for ns in $namespaces; do
		echo "Adding namespace $ns to module $mod.ko."
		generate_deps_for_ns $ns "$mod_source_files"
		# sort the imports
		for source_file in $mod_source_files; do
			sed '/MODULE_IMPORT_NS/Q' $source_file > ${source_file}.tmp
			offset=$(wc -l ${source_file}.tmp | awk '{print $1;}')
			cat $source_file | grep MODULE_IMPORT_NS | LANG=C sort -u >> ${source_file}.tmp
			tail -n +$((offset +1)) ${source_file} | grep -v MODULE_IMPORT_NS >> ${source_file}.tmp
			if ! diff -q ${source_file} ${source_file}.tmp; then
				mv ${source_file}.tmp ${source_file}
			else
				rm ${source_file}.tmp
			fi
		done
	done
}

while read line
do
	generate_deps $line
done < $MODULES_NSDEPS
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