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