[lttng-tools.git] / tests / regression / kernel / test_select_poll_epoll

#!/bin/bash
#
# Copyright (C) 2016 Julien Desfossez <jdesfossez@efficios.com>
#
# SPDX-License-Identifier: GPL-2.0-only
#

TEST_DESC="Kernel tracer - select, poll and epoll payload extraction"

CURDIR=$(dirname "$0")/
TESTDIR=$CURDIR/../..
VALIDATE_SCRIPT="$CURDIR/validate_select_poll_epoll.py"
NUM_TESTS=102

# Only run this test on x86 and arm
uname -m | grep -E "x86|i686|arm|aarch64" >/dev/null 2>&1
if test $? != 0; then
	plan_tests $NUM_TESTS
	skip 0 "Run only on x86 and arm. Skipping all tests." $NUM_TESTS
	exit 0
fi

DISABLE_VALIDATE=0
# Babeltrace python bindings are required for the validation, but
# it is not a mandatory dependancy of the project, so fail run the
# without the content validation, at least we test that we are not
# crashing the kernel.
$VALIDATE_SCRIPT --help >/dev/null 2>&1
if test $? != 0; then
	echo "# Failed to run the validation script, Babeltrace Python bindings might be missing"
	DISABLE_VALIDATE=1
fi

LAST_WARNING=$(dmesg | grep " WARNING:" | cut -d' ' -f1 | tail -1)
LAST_OOPS=$(dmesg | grep " OOPS:" | cut -d' ' -f1 | tail -1)
LAST_BUG=$(dmesg | grep " BUG:" | cut -d' ' -f1 | tail -1)

# shellcheck source=../../utils/utils.sh
source $TESTDIR/utils/utils.sh

function check_trace_content()
{
	if test $DISABLE_VALIDATE == 1; then
		ok 0 "Validation skipped"
		return
	fi

	$VALIDATE_SCRIPT $@
	if test $? = 0; then
		ok 0 "Validation success"
	else
		fail "Validation"
	fi
}

function test_working_cases()
{
	SESSION_NAME="syscall_payload"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	# arm64 does not have epoll_wait
	uname -m | grep -E "aarch64" >/dev/null 2>&1
	if test $? = 0; then
		SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_pwait"
	else
		SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
	fi

	diag "Working cases for select, pselect6, poll, ppoll and epoll, waiting for input"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 1
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 1 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH"

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_timeout_cases()
{
	SESSION_NAME="syscall_payload"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	# arm64 does not have epoll_wait
	uname -m | grep -E "aarch64" >/dev/null 2>&1
	if test $? = 0; then
		SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_pwait"
	else
		SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
	fi

	diag "Timeout cases (1ms) for select, pselect6, poll, ppoll and epoll"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME "$SYSCALL_LIST"
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 2
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 2 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_pselect_invalid_fd()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="pselect6"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "pselect with invalid FD"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 3
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 3 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_big_ppoll()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="ppoll"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "ppoll with 2047 FDs"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 4
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 4 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_ppoll_overflow()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="ppoll"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "ppoll buffer overflow, should segfault, waits for input"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	diag "Expect segfaults"
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 5
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"

	check_trace_content -t 5 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_pselect_invalid_ptr()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="pselect6"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "pselect with invalid pointer, waits for input"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 6
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 6 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_ppoll_ulong_max()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="ppoll"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "ppoll with ulong_max fds, waits for input"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 7
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 7 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_epoll_pwait_invalid_ptr()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="epoll_pwait"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "epoll_pwait with invalid pointer, waits for input"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 8
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 8 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_epoll_pwait_int_max()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="epoll_pwait"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "epoll_pwait with maxevents set to INT_MAX, waits for input"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 9
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 9 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_ppoll_concurrent()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="ppoll"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "ppoll with concurrent updates of the structure from user-space, stress test (3000 iterations), waits for input + timeout 1ms"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 10
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t 10 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

function test_epoll_pwait_concurrent()
{
	SESSION_NAME="syscall_payload"
	SYSCALL_LIST="epoll_ctl,epoll_pwait"
	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")

	diag "epoll_pwait with concurrent munmap of the buffer from user-space, should randomly segfault, run multiple times, waits for input + timeout 1ms"

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	add_context_kernel_ok $SESSION_NAME channel0 pid

	start_lttng_tracing_ok
	diag "Expect segfaults"
	for i in $(seq 1 100); do
		yes | "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 11
	done
	stop_lttng_tracing_ok

	# epoll_wait is not always generated in the trace (stress test)
	validate_trace "epoll_ctl" "$TRACE_PATH"
	check_trace_content -t 11 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null

	destroy_lttng_session_ok $SESSION_NAME

	rm -rf "$TRACE_PATH"
	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
}

# MUST set TESTDIR before calling those functions
plan_tests $NUM_TESTS

print_test_banner "$TEST_DESC"

if [ "$(id -u)" == "0" ]; then
	isroot=1
else
	isroot=0
fi

skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS ||
{
	validate_lttng_modules_present

	start_lttng_sessiond

	test_working_cases
	test_timeout_cases
	test_pselect_invalid_fd
	test_big_ppoll
	test_ppoll_overflow
	test_pselect_invalid_ptr
	test_ppoll_ulong_max
	test_epoll_pwait_invalid_ptr
	test_epoll_pwait_int_max
	test_ppoll_concurrent
	test_epoll_pwait_concurrent

	stop_lttng_sessiond

	NEW_WARNING=$(dmesg | grep " WARNING:" | cut -d' ' -f1 | tail -1)
	NEW_OOPS=$(dmesg | grep " OOPS:" | cut -d' ' -f1 | tail -1)
	NEW_BUG=$(dmesg | grep " BUG:" | cut -d' ' -f1 | tail -1)

	if test "$LAST_WARNING" != "$NEW_WARNING"; then
		fail "New WARNING generated"
	fi
	if test "$LAST_OOPS" != "$NEW_OOPS"; then
		fail "New OOPS generated"
	fi
	if test "$LAST_BUG" != "$NEW_BUG"; then
		fail "New BUG generated"
	fi
}
Commit	Line	Data
a0b1f42c JD	1	#!/bin/bash
a0b1f42c JD	2	#
9d16b343	3	# Copyright (C) 2016 Julien Desfossez <jdesfossez@efficios.com>
a0b1f42c	4	#
9d16b343	5	# SPDX-License-Identifier: GPL-2.0-only
a0b1f42c	6	#
a0b1f42c JD	7
	8	TEST_DESC="Kernel tracer - select, poll and epoll payload extraction"
	9
d40c2620	10	CURDIR=$(dirname "$0")/
a0b1f42c JD	11	TESTDIR=$CURDIR/../..
	12	VALIDATE_SCRIPT="$CURDIR/validate_select_poll_epoll.py"
	13	NUM_TESTS=102
	14
	15	# Only run this test on x86 and arm
	16	uname -m \| grep -E "x86\|i686\|arm\|aarch64" >/dev/null 2>&1
	17	if test $? != 0; then
23bbd912 JR	18	plan_tests $NUM_TESTS
23bbd912 JR	19	skip 0 "Run only on x86 and arm. Skipping all tests." $NUM_TESTS
a0b1f42c JD	20	exit 0
	21	fi
	22
	23	DISABLE_VALIDATE=0
	24	# Babeltrace python bindings are required for the validation, but
	25	# it is not a mandatory dependancy of the project, so fail run the
	26	# without the content validation, at least we test that we are not
	27	# crashing the kernel.
	28	$VALIDATE_SCRIPT --help >/dev/null 2>&1
	29	if test $? != 0; then
	30	echo "# Failed to run the validation script, Babeltrace Python bindings might be missing"
	31	DISABLE_VALIDATE=1
	32	fi
	33
	34	LAST_WARNING=$(dmesg \| grep " WARNING:" \| cut -d' ' -f1 \| tail -1)
	35	LAST_OOPS=$(dmesg \| grep " OOPS:" \| cut -d' ' -f1 \| tail -1)
	36	LAST_BUG=$(dmesg \| grep " BUG:" \| cut -d' ' -f1 \| tail -1)
	37
d40c2620	38	# shellcheck source=../../utils/utils.sh
a0b1f42c JD	39	source $TESTDIR/utils/utils.sh
	40
	41	function check_trace_content()
	42	{
	43	if test $DISABLE_VALIDATE == 1; then
	44	ok 0 "Validation skipped"
	45	return
	46	fi
	47
	48	$VALIDATE_SCRIPT $@
	49	if test $? = 0; then
	50	ok 0 "Validation success"
	51	else
	52	fail "Validation"
	53	fi
	54	}
	55
	56	function test_working_cases()
	57	{
a0b1f42c	58	SESSION_NAME="syscall_payload"
d40c2620 JG	59	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	60	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	61
	62	# arm64 does not have epoll_wait
	63	uname -m \| grep -E "aarch64" >/dev/null 2>&1
	64	if test $? = 0; then
	65	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_pwait"
	66	else
	67	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
	68	fi
	69
	70	diag "Working cases for select, pselect6, poll, ppoll and epoll, waiting for input"
	71
d40c2620	72	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	73
	74	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	75	add_context_kernel_ok $SESSION_NAME channel0 pid
	76
	77	start_lttng_tracing_ok
d40c2620	78	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 1
a0b1f42c	79	stop_lttng_tracing_ok
a0b1f42c	80
d40c2620 JG	81	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	82	check_trace_content -t 1 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH"
a0b1f42c JD	83
	84	destroy_lttng_session_ok $SESSION_NAME
	85
d40c2620 JG	86	rm -rf "$TRACE_PATH"
d40c2620 JG	87	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	88	}
	89
	90	function test_timeout_cases()
	91	{
a0b1f42c	92	SESSION_NAME="syscall_payload"
d40c2620 JG	93	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	94	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	95
	96	# arm64 does not have epoll_wait
	97	uname -m \| grep -E "aarch64" >/dev/null 2>&1
	98	if test $? = 0; then
	99	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_pwait"
	100	else
	101	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
	102	fi
	103
	104	diag "Timeout cases (1ms) for select, pselect6, poll, ppoll and epoll"
	105
d40c2620	106	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	107
	108	lttng_enable_kernel_syscall_ok $SESSION_NAME "$SYSCALL_LIST"
	109	add_context_kernel_ok $SESSION_NAME channel0 pid
	110
	111	start_lttng_tracing_ok
d40c2620	112	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 2
a0b1f42c	113	stop_lttng_tracing_ok
a0b1f42c	114
d40c2620 JG	115	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	116	check_trace_content -t 2 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	117
	118	destroy_lttng_session_ok $SESSION_NAME
	119
d40c2620 JG	120	rm -rf "$TRACE_PATH"
d40c2620 JG	121	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	122	}
a0b1f42c JD	123
8b3b99e2	124	function test_pselect_invalid_fd()
a0b1f42c	125	{
a0b1f42c JD	126	SESSION_NAME="syscall_payload"
a0b1f42c JD	127	SYSCALL_LIST="pselect6"
d40c2620 JG	128	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	129	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c	130
8b3b99e2	131	diag "pselect with invalid FD"
a0b1f42c	132
d40c2620	133	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	134
	135	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	136	add_context_kernel_ok $SESSION_NAME channel0 pid
	137
	138	start_lttng_tracing_ok
d40c2620	139	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 3
a0b1f42c	140	stop_lttng_tracing_ok
a0b1f42c	141
d40c2620 JG	142	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	143	check_trace_content -t 3 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	144
	145	destroy_lttng_session_ok $SESSION_NAME
	146
d40c2620 JG	147	rm -rf "$TRACE_PATH"
d40c2620 JG	148	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	149	}
	150
	151	function test_big_ppoll()
	152	{
a0b1f42c JD	153	SESSION_NAME="syscall_payload"
a0b1f42c JD	154	SYSCALL_LIST="ppoll"
d40c2620 JG	155	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	156	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	157
	158	diag "ppoll with 2047 FDs"
	159
d40c2620	160	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	161
	162	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	163	add_context_kernel_ok $SESSION_NAME channel0 pid
	164
	165	start_lttng_tracing_ok
d40c2620	166	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 4
a0b1f42c	167	stop_lttng_tracing_ok
a0b1f42c	168
d40c2620 JG	169	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	170	check_trace_content -t 4 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	171
	172	destroy_lttng_session_ok $SESSION_NAME
	173
d40c2620 JG	174	rm -rf "$TRACE_PATH"
d40c2620 JG	175	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	176	}
	177
	178	function test_ppoll_overflow()
	179	{
a0b1f42c JD	180	SESSION_NAME="syscall_payload"
a0b1f42c JD	181	SYSCALL_LIST="ppoll"
d40c2620 JG	182	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	183	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	184
	185	diag "ppoll buffer overflow, should segfault, waits for input"
	186
d40c2620	187	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	188
	189	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	190	add_context_kernel_ok $SESSION_NAME channel0 pid
	191
	192	start_lttng_tracing_ok
	193	diag "Expect segfaults"
d40c2620	194	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 5
a0b1f42c	195	stop_lttng_tracing_ok
a0b1f42c	196
d40c2620	197	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
a0b1f42c	198
d40c2620	199	check_trace_content -t 5 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	200
	201	destroy_lttng_session_ok $SESSION_NAME
	202
d40c2620 JG	203	rm -rf "$TRACE_PATH"
d40c2620 JG	204	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	205	}
	206
	207	function test_pselect_invalid_ptr()
	208	{
a0b1f42c JD	209	SESSION_NAME="syscall_payload"
a0b1f42c JD	210	SYSCALL_LIST="pselect6"
d40c2620 JG	211	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	212	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	213
	214	diag "pselect with invalid pointer, waits for input"
	215
d40c2620	216	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	217
	218	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	219	add_context_kernel_ok $SESSION_NAME channel0 pid
	220
	221	start_lttng_tracing_ok
d40c2620	222	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 6
a0b1f42c	223	stop_lttng_tracing_ok
a0b1f42c	224
d40c2620 JG	225	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	226	check_trace_content -t 6 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	227
	228	destroy_lttng_session_ok $SESSION_NAME
	229
d40c2620 JG	230	rm -rf "$TRACE_PATH"
d40c2620 JG	231	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	232	}
	233
	234	function test_ppoll_ulong_max()
	235	{
a0b1f42c JD	236	SESSION_NAME="syscall_payload"
a0b1f42c JD	237	SYSCALL_LIST="ppoll"
d40c2620 JG	238	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	239	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	240
	241	diag "ppoll with ulong_max fds, waits for input"
	242
d40c2620	243	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	244
	245	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	246	add_context_kernel_ok $SESSION_NAME channel0 pid
	247
	248	start_lttng_tracing_ok
d40c2620	249	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 7
a0b1f42c	250	stop_lttng_tracing_ok
a0b1f42c	251
d40c2620 JG	252	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	253	check_trace_content -t 7 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	254
	255	destroy_lttng_session_ok $SESSION_NAME
	256
d40c2620 JG	257	rm -rf "$TRACE_PATH"
d40c2620 JG	258	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	259	}
	260
	261	function test_epoll_pwait_invalid_ptr()
	262	{
a0b1f42c JD	263	SESSION_NAME="syscall_payload"
a0b1f42c JD	264	SYSCALL_LIST="epoll_pwait"
d40c2620 JG	265	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	266	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	267
	268	diag "epoll_pwait with invalid pointer, waits for input"
	269
d40c2620	270	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	271
	272	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	273	add_context_kernel_ok $SESSION_NAME channel0 pid
	274
	275	start_lttng_tracing_ok
d40c2620	276	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 8
a0b1f42c	277	stop_lttng_tracing_ok
a0b1f42c	278
d40c2620 JG	279	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	280	check_trace_content -t 8 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	281
	282	destroy_lttng_session_ok $SESSION_NAME
	283
d40c2620 JG	284	rm -rf "$TRACE_PATH"
d40c2620 JG	285	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	286	}
	287
	288	function test_epoll_pwait_int_max()
	289	{
a0b1f42c JD	290	SESSION_NAME="syscall_payload"
a0b1f42c JD	291	SYSCALL_LIST="epoll_pwait"
d40c2620 JG	292	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	293	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	294
	295	diag "epoll_pwait with maxevents set to INT_MAX, waits for input"
	296
d40c2620	297	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	298
	299	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	300	add_context_kernel_ok $SESSION_NAME channel0 pid
	301
	302	start_lttng_tracing_ok
d40c2620	303	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 9
a0b1f42c	304	stop_lttng_tracing_ok
a0b1f42c	305
d40c2620 JG	306	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	307	check_trace_content -t 9 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	308
	309	destroy_lttng_session_ok $SESSION_NAME
	310
d40c2620 JG	311	rm -rf "$TRACE_PATH"
d40c2620 JG	312	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	313	}
	314
	315	function test_ppoll_concurrent()
	316	{
a0b1f42c JD	317	SESSION_NAME="syscall_payload"
a0b1f42c JD	318	SYSCALL_LIST="ppoll"
d40c2620 JG	319	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	320	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	321
	322	diag "ppoll with concurrent updates of the structure from user-space, stress test (3000 iterations), waits for input + timeout 1ms"
	323
d40c2620	324	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	325
	326	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	327	add_context_kernel_ok $SESSION_NAME channel0 pid
	328
	329	start_lttng_tracing_ok
d40c2620	330	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 10
a0b1f42c	331	stop_lttng_tracing_ok
a0b1f42c	332
d40c2620 JG	333	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	334	check_trace_content -t 10 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	335
	336	destroy_lttng_session_ok $SESSION_NAME
	337
d40c2620 JG	338	rm -rf "$TRACE_PATH"
d40c2620 JG	339	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	340	}
	341
	342	function test_epoll_pwait_concurrent()
	343	{
a0b1f42c JD	344	SESSION_NAME="syscall_payload"
a0b1f42c JD	345	SYSCALL_LIST="epoll_ctl,epoll_pwait"
d40c2620 JG	346	TRACE_PATH=$(mktemp --tmpdir -d "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
d40c2620 JG	347	TEST_VALIDATION_OUTPUT_PATH=$(mktemp --tmpdir -u "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	348
	349	diag "epoll_pwait with concurrent munmap of the buffer from user-space, should randomly segfault, run multiple times, waits for input + timeout 1ms"
	350
d40c2620	351	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	352
	353	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	354	add_context_kernel_ok $SESSION_NAME channel0 pid
	355
	356	start_lttng_tracing_ok
	357	diag "Expect segfaults"
	358	for i in $(seq 1 100); do
d40c2620	359	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 11
a0b1f42c	360	done
a0b1f42c JD	361	stop_lttng_tracing_ok
	362
	363	# epoll_wait is not always generated in the trace (stress test)
d40c2620 JG	364	validate_trace "epoll_ctl" "$TRACE_PATH"
d40c2620 JG	365	check_trace_content -t 11 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	366
	367	destroy_lttng_session_ok $SESSION_NAME
	368
d40c2620 JG	369	rm -rf "$TRACE_PATH"
d40c2620 JG	370	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	371	}
	372
	373	# MUST set TESTDIR before calling those functions
	374	plan_tests $NUM_TESTS
	375
	376	print_test_banner "$TEST_DESC"
	377
	378	if [ "$(id -u)" == "0" ]; then
	379	isroot=1
	380	else
	381	isroot=0
	382	fi
	383
	384	skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS \|\|
	385	{
0159fa50 JR	386	validate_lttng_modules_present
0159fa50 JR	387
a0b1f42c JD	388	start_lttng_sessiond
	389
	390	test_working_cases
	391	test_timeout_cases
8b3b99e2	392	test_pselect_invalid_fd
a0b1f42c JD	393	test_big_ppoll
	394	test_ppoll_overflow
	395	test_pselect_invalid_ptr
	396	test_ppoll_ulong_max
	397	test_epoll_pwait_invalid_ptr
	398	test_epoll_pwait_int_max
	399	test_ppoll_concurrent
	400	test_epoll_pwait_concurrent
	401
	402	stop_lttng_sessiond
	403
	404	NEW_WARNING=$(dmesg \| grep " WARNING:" \| cut -d' ' -f1 \| tail -1)
	405	NEW_OOPS=$(dmesg \| grep " OOPS:" \| cut -d' ' -f1 \| tail -1)
	406	NEW_BUG=$(dmesg \| grep " BUG:" \| cut -d' ' -f1 \| tail -1)
	407
	408	if test "$LAST_WARNING" != "$NEW_WARNING"; then
	409	fail "New WARNING generated"
	410	fi
	411	if test "$LAST_OOPS" != "$NEW_OOPS"; then
	412	fail "New OOPS generated"
	413	fi
	414	if test "$LAST_BUG" != "$NEW_BUG"; then
	415	fail "New BUG generated"
	416	fi
	417	}