mirror of https://github.com/dynup/kpatch
90 lines
2.6 KiB
Bash
90 lines
2.6 KiB
Bash
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#!/bin/bash
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# The purpose of this test script is to determine if create-diff-object can
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# properly recognize object file equivalence when passed the same file for both
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# the original and patched objects. This verifies that create-diff-object is
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# correctly parsing, correlating, and comparing the different elements of the
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# object file. In practice, a situation similar to the test case occurs when a
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# commonly included header file changes, causing Make to rebuild many objects
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# that have no functional change.
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# This script requires a built kernel object tree to be in the kpatch cache
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# directory at $HOME/.kpatch/obj
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#set -x
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OBJDIR="$HOME/.kpatch/obj"
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SCRIPTDIR="$(readlink -f $(dirname $(type -p $0)))"
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TEMPDIR=$(mktemp -d)
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RESULTSDIR="$TEMPDIR/results"
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VMVLINUX="/usr/lib/debug/lib/modules/$(uname -r)/vmlinux" # path for F20
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if [[ ! -d $OBJDIR ]]; then
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echo "please run kpatch-build to populate the object tree in $OBJDIR"
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fi
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cd "$OBJDIR" || exit 1
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for i in $(find * -name '*.o')
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do
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# copied from kpatch-build/kpatch-gcc; keep in sync
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case $i in
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*.mod.o|\
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*built-in.o|\
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vmlinux.o|\
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.tmp_kallsyms1.o|\
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.tmp_kallsyms2.o|\
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init/version.o|\
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arch/x86/boot/version.o|\
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arch/x86/boot/compressed/eboot.o|\
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arch/x86/boot/header.o|\
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arch/x86/boot/compressed/efi_stub_64.o|\
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arch/x86/boot/compressed/piggy.o|\
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kernel/system_certificates.o|\
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.*.o)
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continue
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;;
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esac
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# skip objects that are the linked product of more than one object file
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[[ $(eu-readelf -s $i | grep FILE | wc -l) -ne 1 ]] && continue
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$SCRIPTDIR/../kpatch-build/create-diff-object $i $i /usr/lib/debug/lib/modules/$(uname -r)/vmlinux "$TEMPDIR/output.o" > "$TEMPDIR/log.txt" 2>&1
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RETCODE=$?
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# expect RETCODE to be 3 indicating no change
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[[ $RETCODE -eq 3 ]] && continue
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# otherwise record error
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mkdir -p $RESULTSDIR/$(dirname $i) || exit 1
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cp "$i" "$RESULTSDIR/$i" || exit 1
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case $RETCODE in
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139)
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echo "$i: segfault" | tee
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if [[ ! -e core ]]; then
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echo "no corefile, run "ulimit -c unlimited" to capture corefile"
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else
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mv core "$RESULTSDIR/$i.core" || exit 1
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fi
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;;
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0)
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echo "$i: incorrectly detected change"
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mv "$TEMPDIR/log.txt" "$RESULTSDIR/$i.log" || exit 1
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;;
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1|2)
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echo "$i: error code $RETCODE"
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mv "$TEMPDIR/log.txt" "$RESULTSDIR/$i.log" || exit 1
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;;
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*)
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exit 1 # script error
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;;
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esac
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done
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rm -f "$TEMPDIR/log.txt" > /dev/null 2>&1
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# try to group the errors together in some meaningful way
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cd "$RESULTSDIR" || exit 1
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echo ""
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echo "Results:"
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for i in $(find * -iname '*.log')
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do
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echo $(cat $i | head -1 | cut -f2-3 -d':')
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done | sort | uniq -c | sort -n -r | tee "$TEMPDIR/results.log"
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echo "results are in $TEMPDIR"
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