[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"

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)

SUPPORTED_SYSCALLS_LIST=$("$CURDIR"/select_poll_epoll --list-supported-test-syscalls)
SUPPORTED_SYSCALLS_COUNT=$(echo $SUPPORTED_SYSCALLS_LIST | awk -F '[\t,]' '{print NF}')

# Two tests validate their trace for every supported syscall
NUM_TESTS=$((88+(2*SUPPORTED_SYSCALLS_COUNT)))

# 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")

	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 $SUPPORTED_SYSCALLS_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 working_cases
	stop_lttng_tracing_ok

	validate_trace "$SUPPORTED_SYSCALLS_LIST" "$TRACE_PATH"
	check_trace_content -t working_cases --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")

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

	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"

	lttng_enable_kernel_syscall_ok $SESSION_NAME "$SUPPORTED_SYSCALLS_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 working_cases_timeout
	stop_lttng_tracing_ok

	validate_trace "$SUPPORTED_SYSCALLS_LIST" "$TRACE_PATH"
	check_trace_content -t working_cases_timeout --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"
	local 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 pselect_invalid_fd
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t pselect_invalid_fd --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_big()
{
	SESSION_NAME="syscall_payload"
	local 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 ppoll_big
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t ppoll_big --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_fds_buffer_overflow()
{
	SESSION_NAME="syscall_payload"
	local 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 ppoll_fds_buffer_overflow
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"

	check_trace_content -t ppoll_fds_buffer_overflow --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_pointer()
{
	SESSION_NAME="syscall_payload"
	local 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 pselect_invalid_pointer
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t pselect_invalid_pointer --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_fds_ulong_max()
{
	SESSION_NAME="syscall_payload"
	local 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 ppoll_fds_ulong_max
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t ppoll_fds_ulong_max --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_pointer()
{
	SESSION_NAME="syscall_payload"
	local 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 epoll_pwait_invalid_pointer
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t epoll_pwait_invalid_pointer --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_fds_int_max()
{
	SESSION_NAME="syscall_payload"
	local 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 epoll_pwait_int_max
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t epoll_pwait_int_max --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_write()
{
	SESSION_NAME="syscall_payload"
	local 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 ppoll_concurrent_write
	stop_lttng_tracing_ok

	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
	check_trace_content -t ppoll_concurrent_write --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_unmap()
{
	SESSION_NAME="syscall_payload"
	local 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 epoll_pwait_concurrent_munmap
	done
	stop_lttng_tracing_ok

	# epoll_wait is not always generated in the trace (stress test)
	validate_trace "epoll_ctl" "$TRACE_PATH"
	check_trace_content -t epoll_pwait_concurrent_munmap --validation-file "$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

diag "Supported syscalls are $SUPPORTED_SYSCALLS_LIST"

check_skip_kernel_test "$NUM_TESTS" "Skipping all tests." ||
{
	validate_lttng_modules_present

	start_lttng_sessiond

	test_working_cases
	test_timeout_cases
	test_pselect_invalid_fd
	test_ppoll_big
	test_ppoll_fds_buffer_overflow
	test_pselect_invalid_pointer
	test_ppoll_fds_ulong_max
	test_epoll_pwait_invalid_pointer
	test_epoll_pwait_fds_int_max
	test_ppoll_concurrent_write
	test_epoll_pwait_concurrent_unmap

	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
		diag "Last WARNING before tests: ${LAST_WARNING}"
		diag "Last WARNING after tests: ${NEW_WARNING}"
		fail "New WARNING generated"
	fi
	if test "$LAST_OOPS" != "$NEW_OOPS"; then
		diag "Last OOPS before tests: ${LAST_OOPS}"
		diag "Last OOPS after tests: ${NEW_OOPS}"
		fail "New OOPS generated"
	fi
	if test "$LAST_BUG" != "$NEW_BUG"; then
		diag "Last BUG before tests: ${LAST_BUG}"
		diag "Last BUG after tests: ${NEW_BUG}"
		fail "New BUG generated"
	fi
}
Commit	Line	Data
a0b1f42c JD	1	#!/bin/bash
a0b1f42c JD	2	#
9d16b343	3	# Copyright (C) 2016 Julien Desfossez <jdesfossez@efficios.com>
a0b1f42c	4	#
9d16b343	5	# SPDX-License-Identifier: GPL-2.0-only
a0b1f42c	6	#
a0b1f42c JD	7
	8	TEST_DESC="Kernel tracer - select, poll and epoll payload extraction"
	9
d40c2620	10	CURDIR=$(dirname "$0")/
a0b1f42c JD	11	TESTDIR=$CURDIR/../..
a0b1f42c JD	12	VALIDATE_SCRIPT="$CURDIR/validate_select_poll_epoll.py"
a0b1f42c	13
a0b1f42c JD	14	DISABLE_VALIDATE=0
	15	# Babeltrace python bindings are required for the validation, but
	16	# it is not a mandatory dependancy of the project, so fail run the
	17	# without the content validation, at least we test that we are not
	18	# crashing the kernel.
	19	$VALIDATE_SCRIPT --help >/dev/null 2>&1
	20	if test $? != 0; then
	21	echo "# Failed to run the validation script, Babeltrace Python bindings might be missing"
	22	DISABLE_VALIDATE=1
	23	fi
	24
	25	LAST_WARNING=$(dmesg \| grep " WARNING:" \| cut -d' ' -f1 \| tail -1)
	26	LAST_OOPS=$(dmesg \| grep " OOPS:" \| cut -d' ' -f1 \| tail -1)
	27	LAST_BUG=$(dmesg \| grep " BUG:" \| cut -d' ' -f1 \| tail -1)
	28
2a2ac572 JG	29	SUPPORTED_SYSCALLS_LIST=$("$CURDIR"/select_poll_epoll --list-supported-test-syscalls)
	30	SUPPORTED_SYSCALLS_COUNT=$(echo $SUPPORTED_SYSCALLS_LIST \| awk -F '[\t,]' '{print NF}')
	31
	32	# Two tests validate their trace for every supported syscall
	33	NUM_TESTS=$((88+(2*SUPPORTED_SYSCALLS_COUNT)))
	34
d40c2620	35	# shellcheck source=../../utils/utils.sh
a0b1f42c JD	36	source $TESTDIR/utils/utils.sh
	37
	38	function check_trace_content()
	39	{
	40	if test $DISABLE_VALIDATE == 1; then
	41	ok 0 "Validation skipped"
	42	return
	43	fi
	44
	45	$VALIDATE_SCRIPT $@
	46	if test $? = 0; then
	47	ok 0 "Validation success"
	48	else
	49	fail "Validation"
	50	fi
	51	}
	52
	53	function test_working_cases()
	54	{
a0b1f42c	55	SESSION_NAME="syscall_payload"
8d5a3312 MJ	56	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	57	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c	58
a0b1f42c JD	59	diag "Working cases for select, pselect6, poll, ppoll and epoll, waiting for input"
a0b1f42c JD	60
d40c2620	61	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c	62
2a2ac572	63	lttng_enable_kernel_syscall_ok $SESSION_NAME $SUPPORTED_SYSCALLS_LIST
a0b1f42c JD	64	add_context_kernel_ok $SESSION_NAME channel0 pid
	65
	66	start_lttng_tracing_ok
2a2ac572	67	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t working_cases
a0b1f42c	68	stop_lttng_tracing_ok
a0b1f42c	69
2a2ac572 JG	70	validate_trace "$SUPPORTED_SYSCALLS_LIST" "$TRACE_PATH"
2a2ac572 JG	71	check_trace_content -t working_cases --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH"
a0b1f42c JD	72
	73	destroy_lttng_session_ok $SESSION_NAME
	74
d40c2620 JG	75	rm -rf "$TRACE_PATH"
d40c2620 JG	76	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	77	}
	78
	79	function test_timeout_cases()
	80	{
a0b1f42c	81	SESSION_NAME="syscall_payload"
8d5a3312 MJ	82	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	83	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c	84
a0b1f42c JD	85	diag "Timeout cases (1ms) for select, pselect6, poll, ppoll and epoll"
a0b1f42c JD	86
d40c2620	87	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c	88
2a2ac572	89	lttng_enable_kernel_syscall_ok $SESSION_NAME "$SUPPORTED_SYSCALLS_LIST"
a0b1f42c JD	90	add_context_kernel_ok $SESSION_NAME channel0 pid
	91
	92	start_lttng_tracing_ok
2a2ac572	93	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t working_cases_timeout
a0b1f42c	94	stop_lttng_tracing_ok
a0b1f42c	95
2a2ac572 JG	96	validate_trace "$SUPPORTED_SYSCALLS_LIST" "$TRACE_PATH"
2a2ac572 JG	97	check_trace_content -t working_cases_timeout --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	98
	99	destroy_lttng_session_ok $SESSION_NAME
	100
d40c2620 JG	101	rm -rf "$TRACE_PATH"
d40c2620 JG	102	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	103	}
a0b1f42c JD	104
8b3b99e2	105	function test_pselect_invalid_fd()
a0b1f42c	106	{
a0b1f42c	107	SESSION_NAME="syscall_payload"
2a2ac572	108	local SYSCALL_LIST="pselect6"
8d5a3312 MJ	109	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	110	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c	111
8b3b99e2	112	diag "pselect with invalid FD"
a0b1f42c	113
d40c2620	114	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	115
	116	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	117	add_context_kernel_ok $SESSION_NAME channel0 pid
	118
	119	start_lttng_tracing_ok
2a2ac572	120	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t pselect_invalid_fd
a0b1f42c	121	stop_lttng_tracing_ok
a0b1f42c	122
d40c2620	123	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
2a2ac572	124	check_trace_content -t pselect_invalid_fd --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	125
	126	destroy_lttng_session_ok $SESSION_NAME
	127
d40c2620 JG	128	rm -rf "$TRACE_PATH"
d40c2620 JG	129	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	130	}
a0b1f42c JD	131
2a2ac572	132	function test_ppoll_big()
a0b1f42c	133	{
a0b1f42c	134	SESSION_NAME="syscall_payload"
2a2ac572	135	local SYSCALL_LIST="ppoll"
8d5a3312 MJ	136	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	137	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	138
	139	diag "ppoll with 2047 FDs"
	140
d40c2620	141	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	142
	143	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	144	add_context_kernel_ok $SESSION_NAME channel0 pid
	145
	146	start_lttng_tracing_ok
2a2ac572	147	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t ppoll_big
a0b1f42c	148	stop_lttng_tracing_ok
a0b1f42c	149
d40c2620	150	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
2a2ac572	151	check_trace_content -t ppoll_big --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	152
	153	destroy_lttng_session_ok $SESSION_NAME
	154
d40c2620 JG	155	rm -rf "$TRACE_PATH"
d40c2620 JG	156	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	157	}
a0b1f42c JD	158
2a2ac572	159	function test_ppoll_fds_buffer_overflow()
a0b1f42c	160	{
a0b1f42c	161	SESSION_NAME="syscall_payload"
2a2ac572	162	local SYSCALL_LIST="ppoll"
8d5a3312 MJ	163	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	164	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	165
	166	diag "ppoll buffer overflow, should segfault, waits for input"
	167
d40c2620	168	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	169
	170	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	171	add_context_kernel_ok $SESSION_NAME channel0 pid
	172
	173	start_lttng_tracing_ok
	174	diag "Expect segfaults"
2a2ac572	175	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t ppoll_fds_buffer_overflow
a0b1f42c	176	stop_lttng_tracing_ok
a0b1f42c	177
d40c2620	178	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
a0b1f42c	179
2a2ac572	180	check_trace_content -t ppoll_fds_buffer_overflow --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	181
	182	destroy_lttng_session_ok $SESSION_NAME
	183
d40c2620 JG	184	rm -rf "$TRACE_PATH"
d40c2620 JG	185	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	186	}
a0b1f42c JD	187
2a2ac572	188	function test_pselect_invalid_pointer()
a0b1f42c	189	{
a0b1f42c	190	SESSION_NAME="syscall_payload"
2a2ac572	191	local SYSCALL_LIST="pselect6"
8d5a3312 MJ	192	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	193	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	194
	195	diag "pselect with invalid pointer, waits for input"
	196
d40c2620	197	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	198
	199	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	200	add_context_kernel_ok $SESSION_NAME channel0 pid
	201
	202	start_lttng_tracing_ok
2a2ac572	203	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t pselect_invalid_pointer
a0b1f42c	204	stop_lttng_tracing_ok
a0b1f42c	205
d40c2620	206	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
2a2ac572	207	check_trace_content -t pselect_invalid_pointer --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	208
	209	destroy_lttng_session_ok $SESSION_NAME
	210
d40c2620 JG	211	rm -rf "$TRACE_PATH"
d40c2620 JG	212	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	213	}
a0b1f42c JD	214
2a2ac572	215	function test_ppoll_fds_ulong_max()
a0b1f42c	216	{
a0b1f42c	217	SESSION_NAME="syscall_payload"
2a2ac572	218	local SYSCALL_LIST="ppoll"
8d5a3312 MJ	219	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	220	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	221
	222	diag "ppoll with ulong_max fds, waits for input"
	223
d40c2620	224	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	225
	226	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	227	add_context_kernel_ok $SESSION_NAME channel0 pid
	228
	229	start_lttng_tracing_ok
2a2ac572	230	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t ppoll_fds_ulong_max
a0b1f42c	231	stop_lttng_tracing_ok
a0b1f42c	232
d40c2620	233	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
2a2ac572	234	check_trace_content -t ppoll_fds_ulong_max --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	235
	236	destroy_lttng_session_ok $SESSION_NAME
	237
d40c2620 JG	238	rm -rf "$TRACE_PATH"
d40c2620 JG	239	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	240	}
a0b1f42c JD	241
2a2ac572	242	function test_epoll_pwait_invalid_pointer()
a0b1f42c	243	{
a0b1f42c	244	SESSION_NAME="syscall_payload"
2a2ac572	245	local SYSCALL_LIST="epoll_pwait"
8d5a3312 MJ	246	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	247	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	248
	249	diag "epoll_pwait with invalid pointer, waits for input"
	250
d40c2620	251	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	252
	253	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	254	add_context_kernel_ok $SESSION_NAME channel0 pid
	255
	256	start_lttng_tracing_ok
2a2ac572	257	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t epoll_pwait_invalid_pointer
a0b1f42c	258	stop_lttng_tracing_ok
a0b1f42c	259
d40c2620	260	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
2a2ac572	261	check_trace_content -t epoll_pwait_invalid_pointer --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	262
	263	destroy_lttng_session_ok $SESSION_NAME
	264
d40c2620 JG	265	rm -rf "$TRACE_PATH"
d40c2620 JG	266	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	267	}
a0b1f42c JD	268
2a2ac572	269	function test_epoll_pwait_fds_int_max()
a0b1f42c	270	{
a0b1f42c	271	SESSION_NAME="syscall_payload"
2a2ac572	272	local SYSCALL_LIST="epoll_pwait"
8d5a3312 MJ	273	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	274	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	275
	276	diag "epoll_pwait with maxevents set to INT_MAX, waits for input"
	277
d40c2620	278	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	279
	280	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	281	add_context_kernel_ok $SESSION_NAME channel0 pid
	282
	283	start_lttng_tracing_ok
2a2ac572	284	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t epoll_pwait_int_max
a0b1f42c	285	stop_lttng_tracing_ok
a0b1f42c	286
d40c2620	287	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
2a2ac572	288	check_trace_content -t epoll_pwait_int_max --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	289
	290	destroy_lttng_session_ok $SESSION_NAME
	291
d40c2620 JG	292	rm -rf "$TRACE_PATH"
d40c2620 JG	293	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	294	}
a0b1f42c JD	295
2a2ac572	296	function test_ppoll_concurrent_write()
a0b1f42c	297	{
a0b1f42c	298	SESSION_NAME="syscall_payload"
2a2ac572	299	local SYSCALL_LIST="ppoll"
8d5a3312 MJ	300	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	301	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	302
	303	diag "ppoll with concurrent updates of the structure from user-space, stress test (3000 iterations), waits for input + timeout 1ms"
	304
d40c2620	305	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	306
	307	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	308	add_context_kernel_ok $SESSION_NAME channel0 pid
	309
	310	start_lttng_tracing_ok
2a2ac572	311	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t ppoll_concurrent_write
a0b1f42c	312	stop_lttng_tracing_ok
a0b1f42c	313
d40c2620	314	validate_trace "$SYSCALL_LIST" "$TRACE_PATH"
2a2ac572	315	check_trace_content -t ppoll_concurrent_write --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	316
	317	destroy_lttng_session_ok $SESSION_NAME
	318
d40c2620 JG	319	rm -rf "$TRACE_PATH"
d40c2620 JG	320	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	321	}
a0b1f42c JD	322
2a2ac572	323	function test_epoll_pwait_concurrent_unmap()
a0b1f42c	324	{
a0b1f42c	325	SESSION_NAME="syscall_payload"
2a2ac572	326	local SYSCALL_LIST="epoll_ctl,epoll_pwait"
8d5a3312 MJ	327	TRACE_PATH=$(mktemp -d -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_trace_path.XXXXXX")
8d5a3312 MJ	328	TEST_VALIDATION_OUTPUT_PATH=$(mktemp -u -t "tmp.test_kernel_select_poll_epoll_${FUNCNAME[0]}_validation.XXXXXX")
a0b1f42c JD	329
	330	diag "epoll_pwait with concurrent munmap of the buffer from user-space, should randomly segfault, run multiple times, waits for input + timeout 1ms"
	331
d40c2620	332	create_lttng_session_ok $SESSION_NAME "$TRACE_PATH"
a0b1f42c JD	333
	334	lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST
	335	add_context_kernel_ok $SESSION_NAME channel0 pid
	336
	337	start_lttng_tracing_ok
	338	diag "Expect segfaults"
	339	for i in $(seq 1 100); do
2a2ac572	340	yes \| "$CURDIR"/select_poll_epoll --validation-file "$TEST_VALIDATION_OUTPUT_PATH" -t epoll_pwait_concurrent_munmap
a0b1f42c	341	done
a0b1f42c JD	342	stop_lttng_tracing_ok
	343
	344	# epoll_wait is not always generated in the trace (stress test)
d40c2620	345	validate_trace "epoll_ctl" "$TRACE_PATH"
2a2ac572	346	check_trace_content -t epoll_pwait_concurrent_munmap --validation-file "$TEST_VALIDATION_OUTPUT_PATH" "$TRACE_PATH" 2>/dev/null
a0b1f42c JD	347
	348	destroy_lttng_session_ok $SESSION_NAME
	349
d40c2620 JG	350	rm -rf "$TRACE_PATH"
d40c2620 JG	351	rm -f "$TEST_VALIDATION_OUTPUT_PATH"
a0b1f42c JD	352	}
	353
	354	# MUST set TESTDIR before calling those functions
	355	plan_tests $NUM_TESTS
	356
	357	print_test_banner "$TEST_DESC"
	358
564b41c4 JR	359	# Only run this test on x86 and arm
	360	uname -m \| grep -E "x86\|i686\|arm\|aarch64" >/dev/null 2>&1
	361	if test $? != 0; then
	362	skip 0 "Run only on x86 and arm. Skipping all tests." $NUM_TESTS
	363	exit 0
	364	fi
	365
2a2ac572 JG	366	diag "Supported syscalls are $SUPPORTED_SYSCALLS_LIST"
2a2ac572 JG	367
3a174400	368	check_skip_kernel_test "$NUM_TESTS" "Skipping all tests." \|\|
a0b1f42c	369	{
0159fa50 JR	370	validate_lttng_modules_present
0159fa50 JR	371
a0b1f42c JD	372	start_lttng_sessiond
	373
	374	test_working_cases
	375	test_timeout_cases
8b3b99e2	376	test_pselect_invalid_fd
2a2ac572 JG	377	test_ppoll_big
	378	test_ppoll_fds_buffer_overflow
	379	test_pselect_invalid_pointer
	380	test_ppoll_fds_ulong_max
	381	test_epoll_pwait_invalid_pointer
	382	test_epoll_pwait_fds_int_max
	383	test_ppoll_concurrent_write
	384	test_epoll_pwait_concurrent_unmap
a0b1f42c JD	385
	386	stop_lttng_sessiond
	387
	388	NEW_WARNING=$(dmesg \| grep " WARNING:" \| cut -d' ' -f1 \| tail -1)
	389	NEW_OOPS=$(dmesg \| grep " OOPS:" \| cut -d' ' -f1 \| tail -1)
	390	NEW_BUG=$(dmesg \| grep " BUG:" \| cut -d' ' -f1 \| tail -1)
	391
	392	if test "$LAST_WARNING" != "$NEW_WARNING"; then
f6fd58e8 KS	393	diag "Last WARNING before tests: ${LAST_WARNING}"
f6fd58e8 KS	394	diag "Last WARNING after tests: ${NEW_WARNING}"
a0b1f42c JD	395	fail "New WARNING generated"
	396	fi
	397	if test "$LAST_OOPS" != "$NEW_OOPS"; then
f6fd58e8 KS	398	diag "Last OOPS before tests: ${LAST_OOPS}"
f6fd58e8 KS	399	diag "Last OOPS after tests: ${NEW_OOPS}"
a0b1f42c JD	400	fail "New OOPS generated"
	401	fi
	402	if test "$LAST_BUG" != "$NEW_BUG"; then
f6fd58e8 KS	403	diag "Last BUG before tests: ${LAST_BUG}"
f6fd58e8 KS	404	diag "Last BUG after tests: ${NEW_BUG}"
a0b1f42c JD	405	fail "New BUG generated"
	406	fi
	407	}