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#!/bin/bash
# Copyright 2020 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
# config-bisect.pl -l ctx.git.dir -r -b ctx.git.dir kernelBaselineConfig kernelConfig
set -eu
if [ "$3" == "-r" ]
then
baseline=`cat $6`
outdir=$5
echo $baseline > $outdir/.config
exit 0
fi
# config-bisect.pl -l ctx.git.dir -b ctx.git.dir kernelBaselineConfig kernelConfig verdict
baseline=`cat $5`
# Test baseline file contains string CONFIG_FAILING -> fail
if [ "$baseline" == "CONFIG_FAILING=y" ]
then
exit 1
fi
# Generate end results which "reproduces" the crash
if [ $baseline == "CONFIG_REPRODUCES_CRASH=y" ]
then
echo "%%%%%%%% FAILED TO FIND SINGLE BAD CONFIG %%%%%%%%"
echo "Hmm, can't make any more changes without making good == bad?"
echo "Difference between good (+) and bad (-)"
echo "REPRODUCES_CRASH n -> y"
echo "-DISABLED_OPTION=n"
echo "+ONLY_IN_ORIGINAL_OPTION=y"
echo "See good and bad configs for details:"
echo "good: /mnt/work/config_bisect_evaluation/out/config_bisect/kernel.baseline_config.tmp"
echo "bad: /mnt/work/config_bisect_evaluation/out/config_bisect/kernel.config.tmp"
echo "%%%%%%%% FAILED TO FIND SINGLE BAD CONFIG %%%%%%%%"
exit 2
fi
# Generate end result which doesn't "reproduce" the crash
if [ $baseline == "CONFIG_NOT_REPRODUCE_CRASH=y" ]
then
echo "%%%%%%%% FAILED TO FIND SINGLE BAD CONFIG %%%%%%%%"
echo "Hmm, can't make any more changes without making good == bad?"
echo "Difference between good (+) and bad (-)"
echo "NOT_REPRODUCE_CRASH n -> y"
echo "See good and bad configs for details:"
echo "good: /mnt/work/config_bisect_evaluation/out/config_bisect/kernel.baseline_config.tmp"
echo "bad: /mnt/work/config_bisect_evaluation/out/config_bisect/kernel.config.tmp"
echo "%%%%%%%% FAILED TO FIND SINGLE BAD CONFIG %%%%%%%%"
exit 2
fi
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