[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

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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${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"

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

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
a0b1f42c JD	15	DISABLE_VALIDATE=0
	16	# Babeltrace python bindings are required for the validation, but
	17	# it is not a mandatory dependancy of the project, so fail run the
	18	# without the content validation, at least we test that we are not
	19	# crashing the kernel.
	20	$VALIDATE_SCRIPT --help >/dev/null 2>&1
	21	if test $? != 0; then
	22	echo "# Failed to run the validation script, Babeltrace Python bindings might be missing"
	23	DISABLE_VALIDATE=1
	24	fi
	25
	26	LAST_WARNING=$(dmesg \| grep " WARNING:" \| cut -d' ' -f1 \| tail -1)
	27	LAST_OOPS=$(dmesg \| grep " OOPS:" \| cut -d' ' -f1 \| tail -1)
	28	LAST_BUG=$(dmesg \| grep " BUG:" \| cut -d' ' -f1 \| tail -1)
	29
d40c2620	30	# shellcheck source=../../utils/utils.sh
a0b1f42c JD	31	source $TESTDIR/utils/utils.sh
	32
	33	function check_trace_content()
	34	{
	35	if test $DISABLE_VALIDATE == 1; then
	36	ok 0 "Validation skipped"
	37	return
	38	fi
	39
	40	$VALIDATE_SCRIPT $@
	41	if test $? = 0; then
	42	ok 0 "Validation success"
	43	else
	44	fail "Validation"
	45	fi
	46	}
	47
	48	function test_working_cases()
	49	{
a0b1f42c	50	SESSION_NAME="syscall_payload"
8d5a3312 MJ	51	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	52	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	53
	54	# arm64 does not have epoll_wait
	55	uname -m \| grep -E "aarch64" >/dev/null 2>&1
	56	if test $? = 0; then
	57	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_pwait"
	58	else
	59	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
	60	fi
	61
	62	diag "Working cases for select, pselect6, poll, ppoll and epoll, waiting for input"
	63
d40c2620	64	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	65
	66	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	67	add_context_kernel_ok $SESSION_NAME channel0 pid
	68
	69	start_lttng_tracing_ok
d40c2620	70	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 1
a0b1f42c	71	stop_lttng_tracing_ok
a0b1f42c	72
d40c2620 JG	73	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	74	check_trace_content -t 1 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH"
a0b1f42c JD	75
	76	destroy_lttng_session_ok $SESSION_NAME
	77
d40c2620 JG	78	rm -rf "$TRACE_PATH"
d40c2620 JG	79	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	80	}
	81
	82	function test_timeout_cases()
	83	{
a0b1f42c	84	SESSION_NAME="syscall_payload"
8d5a3312 MJ	85	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	86	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	87
	88	# arm64 does not have epoll_wait
	89	uname -m \| grep -E "aarch64" >/dev/null 2>&1
	90	if test $? = 0; then
	91	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_pwait"
	92	else
	93	SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait"
	94	fi
	95
	96	diag "Timeout cases (1ms) for select, pselect6, poll, ppoll and epoll"
	97
d40c2620	98	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	99
	100	lttng_enable_kernel_syscall_ok $SESSION_NAME "$SYSCALL_LIST"
	101	add_context_kernel_ok $SESSION_NAME channel0 pid
	102
	103	start_lttng_tracing_ok
d40c2620	104	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 2
a0b1f42c	105	stop_lttng_tracing_ok
a0b1f42c	106
d40c2620 JG	107	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	108	check_trace_content -t 2 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	109
	110	destroy_lttng_session_ok $SESSION_NAME
	111
d40c2620 JG	112	rm -rf "$TRACE_PATH"
d40c2620 JG	113	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	114	}
a0b1f42c JD	115
8b3b99e2	116	function test_pselect_invalid_fd()
a0b1f42c	117	{
a0b1f42c JD	118	SESSION_NAME="syscall_payload"
a0b1f42c JD	119	SYSCALL_LIST="pselect6"
8d5a3312 MJ	120	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	121	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c	122
8b3b99e2	123	diag "pselect with invalid FD"
a0b1f42c	124
d40c2620	125	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	126
	127	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	128	add_context_kernel_ok $SESSION_NAME channel0 pid
	129
	130	start_lttng_tracing_ok
d40c2620	131	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 3
a0b1f42c	132	stop_lttng_tracing_ok
a0b1f42c	133
d40c2620 JG	134	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	135	check_trace_content -t 3 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	136
	137	destroy_lttng_session_ok $SESSION_NAME
	138
d40c2620 JG	139	rm -rf "$TRACE_PATH"
d40c2620 JG	140	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	141	}
	142
	143	function test_big_ppoll()
	144	{
a0b1f42c JD	145	SESSION_NAME="syscall_payload"
a0b1f42c JD	146	SYSCALL_LIST="ppoll"
8d5a3312 MJ	147	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	148	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	149
	150	diag "ppoll with 2047 FDs"
	151
d40c2620	152	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	153
	154	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	155	add_context_kernel_ok $SESSION_NAME channel0 pid
	156
	157	start_lttng_tracing_ok
d40c2620	158	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 4
a0b1f42c	159	stop_lttng_tracing_ok
a0b1f42c	160
d40c2620 JG	161	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	162	check_trace_content -t 4 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	163
	164	destroy_lttng_session_ok $SESSION_NAME
	165
d40c2620 JG	166	rm -rf "$TRACE_PATH"
d40c2620 JG	167	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	168	}
	169
	170	function test_ppoll_overflow()
	171	{
a0b1f42c JD	172	SESSION_NAME="syscall_payload"
a0b1f42c JD	173	SYSCALL_LIST="ppoll"
8d5a3312 MJ	174	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	175	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	176
	177	diag "ppoll buffer overflow, should segfault, waits for input"
	178
d40c2620	179	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	180
	181	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	182	add_context_kernel_ok $SESSION_NAME channel0 pid
	183
	184	start_lttng_tracing_ok
	185	diag "Expect segfaults"
d40c2620	186	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 5
a0b1f42c	187	stop_lttng_tracing_ok
a0b1f42c	188
d40c2620	189	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
a0b1f42c	190
d40c2620	191	check_trace_content -t 5 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	192
	193	destroy_lttng_session_ok $SESSION_NAME
	194
d40c2620 JG	195	rm -rf "$TRACE_PATH"
d40c2620 JG	196	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	197	}
	198
	199	function test_pselect_invalid_ptr()
	200	{
a0b1f42c JD	201	SESSION_NAME="syscall_payload"
a0b1f42c JD	202	SYSCALL_LIST="pselect6"
8d5a3312 MJ	203	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	204	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	205
	206	diag "pselect with invalid pointer, waits for input"
	207
d40c2620	208	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	209
	210	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	211	add_context_kernel_ok $SESSION_NAME channel0 pid
	212
	213	start_lttng_tracing_ok
d40c2620	214	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 6
a0b1f42c	215	stop_lttng_tracing_ok
a0b1f42c	216
d40c2620 JG	217	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	218	check_trace_content -t 6 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	219
	220	destroy_lttng_session_ok $SESSION_NAME
	221
d40c2620 JG	222	rm -rf "$TRACE_PATH"
d40c2620 JG	223	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	224	}
	225
	226	function test_ppoll_ulong_max()
	227	{
a0b1f42c JD	228	SESSION_NAME="syscall_payload"
a0b1f42c JD	229	SYSCALL_LIST="ppoll"
8d5a3312 MJ	230	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	231	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	232
	233	diag "ppoll with ulong_max fds, waits for input"
	234
d40c2620	235	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	236
	237	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	238	add_context_kernel_ok $SESSION_NAME channel0 pid
	239
	240	start_lttng_tracing_ok
d40c2620	241	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 7
a0b1f42c	242	stop_lttng_tracing_ok
a0b1f42c	243
d40c2620 JG	244	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	245	check_trace_content -t 7 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	246
	247	destroy_lttng_session_ok $SESSION_NAME
	248
d40c2620 JG	249	rm -rf "$TRACE_PATH"
d40c2620 JG	250	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	251	}
	252
	253	function test_epoll_pwait_invalid_ptr()
	254	{
a0b1f42c JD	255	SESSION_NAME="syscall_payload"
a0b1f42c JD	256	SYSCALL_LIST="epoll_pwait"
8d5a3312 MJ	257	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	258	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	259
	260	diag "epoll_pwait with invalid pointer, waits for input"
	261
d40c2620	262	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	263
	264	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	265	add_context_kernel_ok $SESSION_NAME channel0 pid
	266
	267	start_lttng_tracing_ok
d40c2620	268	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 8
a0b1f42c	269	stop_lttng_tracing_ok
a0b1f42c	270
d40c2620 JG	271	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	272	check_trace_content -t 8 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	273
	274	destroy_lttng_session_ok $SESSION_NAME
	275
d40c2620 JG	276	rm -rf "$TRACE_PATH"
d40c2620 JG	277	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	278	}
	279
	280	function test_epoll_pwait_int_max()
	281	{
a0b1f42c JD	282	SESSION_NAME="syscall_payload"
a0b1f42c JD	283	SYSCALL_LIST="epoll_pwait"
8d5a3312 MJ	284	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	285	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	286
	287	diag "epoll_pwait with maxevents set to INT_MAX, waits for input"
	288
d40c2620	289	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	290
	291	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	292	add_context_kernel_ok $SESSION_NAME channel0 pid
	293
	294	start_lttng_tracing_ok
d40c2620	295	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 9
a0b1f42c	296	stop_lttng_tracing_ok
a0b1f42c	297
d40c2620 JG	298	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	299	check_trace_content -t 9 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	300
	301	destroy_lttng_session_ok $SESSION_NAME
	302
d40c2620 JG	303	rm -rf "$TRACE_PATH"
d40c2620 JG	304	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	305	}
	306
	307	function test_ppoll_concurrent()
	308	{
a0b1f42c JD	309	SESSION_NAME="syscall_payload"
a0b1f42c JD	310	SYSCALL_LIST="ppoll"
8d5a3312 MJ	311	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	312	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	313
	314	diag "ppoll with concurrent updates of the structure from user-space, stress test (3000 iterations), waits for input + timeout 1ms"
	315
d40c2620	316	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	317
	318	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	319	add_context_kernel_ok $SESSION_NAME channel0 pid
	320
	321	start_lttng_tracing_ok
d40c2620	322	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 10
a0b1f42c	323	stop_lttng_tracing_ok
a0b1f42c	324
d40c2620 JG	325	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
d40c2620 JG	326	check_trace_content -t 10 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	327
	328	destroy_lttng_session_ok $SESSION_NAME
	329
d40c2620 JG	330	rm -rf "$TRACE_PATH"
d40c2620 JG	331	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	332	}
	333
	334	function test_epoll_pwait_concurrent()
	335	{
a0b1f42c JD	336	SESSION_NAME="syscall_payload"
a0b1f42c JD	337	SYSCALL_LIST="epoll_ctl,epoll_pwait"
8d5a3312 MJ	338	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	339	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	340
	341	diag "epoll_pwait with concurrent munmap of the buffer from user-space, should randomly segfault, run multiple times, waits for input + timeout 1ms"
	342
d40c2620	343	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	344
	345	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	346	add_context_kernel_ok $SESSION_NAME channel0 pid
	347
	348	start_lttng_tracing_ok
	349	diag "Expect segfaults"
	350	for i in $(seq 1 100); do
d40c2620	351	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t 11
a0b1f42c	352	done
a0b1f42c JD	353	stop_lttng_tracing_ok
	354
	355	# epoll_wait is not always generated in the trace (stress test)
d40c2620 JG	356	validate_trace "epoll_ctl" "$TRACE_PATH"
d40c2620 JG	357	check_trace_content -t 11 --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	358
	359	destroy_lttng_session_ok $SESSION_NAME
	360
d40c2620 JG	361	rm -rf "$TRACE_PATH"
d40c2620 JG	362	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	363	}
	364
	365	# MUST set TESTDIR before calling those functions
	366	plan_tests $NUM_TESTS
	367
	368	print_test_banner "$TEST_DESC"
	369
564b41c4 JR	370	# Only run this test on x86 and arm
	371	uname -m \| grep -E "x86\|i686\|arm\|aarch64" >/dev/null 2>&1
	372	if test $? != 0; then
	373	skip 0 "Run only on x86 and arm. Skipping all tests." $NUM_TESTS
	374	exit 0
	375	fi
	376
a0b1f42c JD	377	if [ "$(id -u)" == "0" ]; then
	378	isroot=1
	379	else
	380	isroot=0
	381	fi
	382
	383	skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS \|\|
	384	{
0159fa50 JR	385	validate_lttng_modules_present
0159fa50 JR	386
a0b1f42c JD	387	start_lttng_sessiond
	388
	389	test_working_cases
	390	test_timeout_cases
8b3b99e2	391	test_pselect_invalid_fd
a0b1f42c JD	392	test_big_ppoll
	393	test_ppoll_overflow
	394	test_pselect_invalid_ptr
	395	test_ppoll_ulong_max
	396	test_epoll_pwait_invalid_ptr
	397	test_epoll_pwait_int_max
	398	test_ppoll_concurrent
	399	test_epoll_pwait_concurrent
	400
	401	stop_lttng_sessiond
	402
	403	NEW_WARNING=$(dmesg \| grep " WARNING:" \| cut -d' ' -f1 \| tail -1)
	404	NEW_OOPS=$(dmesg \| grep " OOPS:" \| cut -d' ' -f1 \| tail -1)
	405	NEW_BUG=$(dmesg \| grep " BUG:" \| cut -d' ' -f1 \| tail -1)
	406
	407	if test "$LAST_WARNING" != "$NEW_WARNING"; then
	408	fail "New WARNING generated"
	409	fi
	410	if test "$LAST_OOPS" != "$NEW_OOPS"; then
	411	fail "New OOPS generated"
	412	fi
	413	if test "$LAST_BUG" != "$NEW_BUG"; then
	414	fail "New BUG generated"
	415	fi
	416	}