Commit def5480d authored by Veronika Molnarova's avatar Veronika Molnarova Committed by Arnaldo Carvalho de Melo
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perf testsuite probe: Add test for blacklisted kprobes handling 



Test perf probe interface. Blacklisted functions should be rejected
when there is an attempt to set a kprobe to them.

Signed-off-by: default avatarVeronika Molnarova <vmolnaro@redhat.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/r/20240702110849.31904-6-vmolnaro@redhat.com


Signed-off-by: default avatarMichael Petlan <mpetlan@redhat.com>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 32ddd082

tools/perf/tests/shell/base_probe/test_adding_blacklisted.sh

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#!/bin/bash



# SPDX-License-Identifier: GPL-2.0



#

#	test_adding_blacklisted of perf_probe test

#	Author: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>

#	Author: Michael Petlan <mpetlan@redhat.com>

#

#	Description:

#

#		Blacklisted functions should not be added successfully as probes,

#	they must be skipped.

#



# include working environment

. ../common/init.sh



TEST_RESULT=0



# skip if not supported

BLACKFUNC=`head -n 1 /sys/kernel/debug/kprobes/blacklist 2> /dev/null | cut -f2`

if [ -z "$BLACKFUNC" ]; then

	print_overall_skipped

	exit 0

fi



# remove all previously added probes

clear_all_probes





### adding blacklisted function



# functions from blacklist should be skipped by perf probe

! $CMD_PERF probe $BLACKFUNC > $LOGS_DIR/adding_blacklisted.log 2> $LOGS_DIR/adding_blacklisted.err

PERF_EXIT_CODE=$?



REGEX_SCOPE_FAIL="Failed to find scope of probe point"

REGEX_SKIP_MESSAGE=" is blacklisted function, skip it\."

REGEX_NOT_FOUND_MESSAGE="Probe point \'$BLACKFUNC\' not found."

REGEX_ERROR_MESSAGE="Error: Failed to add events."

REGEX_INVALID_ARGUMENT="Failed to write event: Invalid argument"

REGEX_SYMBOL_FAIL="Failed to find symbol at $RE_ADDRESS"

REGEX_OUT_SECTION="$BLACKFUNC is out of \.\w+, skip it"

../common/check_all_lines_matched.pl "$REGEX_SKIP_MESSAGE" "$REGEX_NOT_FOUND_MESSAGE" "$REGEX_ERROR_MESSAGE" "$REGEX_SCOPE_FAIL" "$REGEX_INVALID_ARGUMENT" "$REGEX_SYMBOL_FAIL" "$REGEX_OUT_SECTION" < $LOGS_DIR/adding_blacklisted.err

CHECK_EXIT_CODE=$?



print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "adding blacklisted function $BLACKFUNC"

(( TEST_RESULT += $? ))





### listing not-added probe



# blacklisted probes should NOT appear in perf-list output

$CMD_PERF list probe:\* > $LOGS_DIR/adding_blacklisted_list.log

PERF_EXIT_CODE=$?



../common/check_all_lines_matched.pl "$RE_LINE_EMPTY" "List of pre-defined events" "Metric Groups:" < $LOGS_DIR/adding_blacklisted_list.log

CHECK_EXIT_CODE=$?



print_results $PERF_EXIT_CODE $CHECK_EXIT_CODE "listing blacklisted probe (should NOT be listed)"

(( TEST_RESULT += $? ))





# print overall results

print_overall_results "$TEST_RESULT"

exit $?