mirror of https://gitee.com/openkylin/linux.git
93 lines
2.4 KiB
Bash
93 lines
2.4 KiB
Bash
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# This reads tests.txt for the list of LKDTM tests to invoke. Any marked
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# with a leading "#" are skipped. The rest of the line after the
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# test name is either the text to look for in dmesg for a "success",
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# or the rationale for why a test is marked to be skipped.
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#
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set -e
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TRIGGER=/sys/kernel/debug/provoke-crash/DIRECT
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KSELFTEST_SKIP_TEST=4
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# Verify we have LKDTM available in the kernel.
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if [ ! -r $TRIGGER ] ; then
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/sbin/modprobe -q lkdtm || true
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if [ ! -r $TRIGGER ] ; then
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echo "Cannot find $TRIGGER (missing CONFIG_LKDTM?)"
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else
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echo "Cannot write $TRIGGER (need to run as root?)"
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fi
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# Skip this test
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exit $KSELFTEST_SKIP_TEST
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fi
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# Figure out which test to run from our script name.
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test=$(basename $0 .sh)
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# Look up details about the test from master list of LKDTM tests.
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line=$(egrep '^#?'"$test"'\b' tests.txt)
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if [ -z "$line" ]; then
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echo "Skipped: missing test '$test' in tests.txt"
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exit $KSELFTEST_SKIP_TEST
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fi
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# Check that the test is known to LKDTM.
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if ! egrep -q '^'"$test"'$' "$TRIGGER" ; then
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echo "Skipped: test '$test' missing in $TRIGGER!"
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exit $KSELFTEST_SKIP_TEST
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fi
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# Extract notes/expected output from test list.
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test=$(echo "$line" | cut -d" " -f1)
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if echo "$line" | grep -q ' ' ; then
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expect=$(echo "$line" | cut -d" " -f2-)
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else
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expect=""
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fi
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# If the test is commented out, report a skip
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if echo "$test" | grep -q '^#' ; then
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test=$(echo "$test" | cut -c2-)
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if [ -z "$expect" ]; then
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expect="crashes entire system"
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fi
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echo "Skipping $test: $expect"
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exit $KSELFTEST_SKIP_TEST
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fi
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# If no expected output given, assume an Oops with back trace is success.
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if [ -z "$expect" ]; then
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expect="call trace:"
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fi
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# Clear out dmesg for output reporting
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dmesg -c >/dev/null
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# Prepare log for report checking
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LOG=$(mktemp --tmpdir -t lkdtm-XXXXXX)
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cleanup() {
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rm -f "$LOG"
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}
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trap cleanup EXIT
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# Most shells yell about signals and we're expecting the "cat" process
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# to usually be killed by the kernel. So we have to run it in a sub-shell
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# and silence errors.
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($SHELL -c 'cat <(echo '"$test"') >'"$TRIGGER" 2>/dev/null) || true
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# Record and dump the results
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dmesg -c >"$LOG"
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cat "$LOG"
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# Check for expected output
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if egrep -qi "$expect" "$LOG" ; then
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echo "$test: saw '$expect': ok"
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exit 0
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else
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if egrep -qi XFAIL: "$LOG" ; then
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echo "$test: saw 'XFAIL': [SKIP]"
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exit $KSELFTEST_SKIP_TEST
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else
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echo "$test: missing '$expect': [FAIL]"
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exit 1
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fi
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fi
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