Commit | Line | Data |
---|---|---|
a0b1f42c JD |
1 | #!/bin/bash |
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 | ||
10 | CURDIR=$(dirname $0)/ | |
11 | TESTDIR=$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 | |
1215e5ce JR |
18 | plan_tests $NUM_TESTS |
19 | skip 0 "Run only on x86 and arm. Skipping all tests." $NUM_TESTS | |
a0b1f42c JD |
20 | exit 0 |
21 | fi | |
22 | ||
23 | DISABLE_VALIDATE=0 | |
24 | # Babeltrace python bindings are required for the validation, but | |
25 | # it is not a mandatory dependancy of the project, so fail run the | |
26 | # without the content validation, at least we test that we are not | |
27 | # crashing the kernel. | |
28 | $VALIDATE_SCRIPT --help >/dev/null 2>&1 | |
29 | if test $? != 0; then | |
30 | echo "# Failed to run the validation script, Babeltrace Python bindings might be missing" | |
31 | DISABLE_VALIDATE=1 | |
32 | fi | |
33 | ||
34 | LAST_WARNING=$(dmesg | grep " WARNING:" | cut -d' ' -f1 | tail -1) | |
35 | LAST_OOPS=$(dmesg | grep " OOPS:" | cut -d' ' -f1 | tail -1) | |
36 | LAST_BUG=$(dmesg | grep " BUG:" | cut -d' ' -f1 | tail -1) | |
37 | ||
38 | source $TESTDIR/utils/utils.sh | |
39 | ||
40 | function check_trace_content() | |
41 | { | |
42 | if test $DISABLE_VALIDATE == 1; then | |
43 | ok 0 "Validation skipped" | |
44 | return | |
45 | fi | |
46 | ||
47 | $VALIDATE_SCRIPT $@ | |
48 | if test $? = 0; then | |
49 | ok 0 "Validation success" | |
50 | else | |
51 | fail "Validation" | |
52 | fi | |
53 | } | |
54 | ||
55 | function test_working_cases() | |
56 | { | |
57 | TRACE_PATH=$(mktemp -d) | |
58 | SESSION_NAME="syscall_payload" | |
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 | ||
70 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
71 | ||
72 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
73 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
74 | ||
75 | start_lttng_tracing_ok | |
76 | { out=$(yes | $CURDIR/select_poll_epoll -t 1); } 2>/dev/null | |
77 | stop_lttng_tracing_ok | |
78 | pid=$(echo $out | cut -d' ' -f1) | |
79 | ||
80 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
81 | check_trace_content -t 1 -p $pid $TRACE_PATH | |
82 | ||
83 | destroy_lttng_session_ok $SESSION_NAME | |
84 | ||
85 | rm -rf $TRACE_PATH | |
86 | } | |
87 | ||
88 | function test_timeout_cases() | |
89 | { | |
90 | TRACE_PATH=$(mktemp -d) | |
91 | SESSION_NAME="syscall_payload" | |
92 | ||
93 | # arm64 does not have epoll_wait | |
94 | uname -m | grep -E "aarch64" >/dev/null 2>&1 | |
95 | if test $? = 0; then | |
96 | SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_pwait" | |
97 | else | |
98 | SYSCALL_LIST="select,pselect6,poll,ppoll,epoll_ctl,epoll_wait,epoll_pwait" | |
99 | fi | |
100 | ||
101 | diag "Timeout cases (1ms) for select, pselect6, poll, ppoll and epoll" | |
102 | ||
103 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
104 | ||
105 | lttng_enable_kernel_syscall_ok $SESSION_NAME "$SYSCALL_LIST" | |
106 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
107 | ||
108 | start_lttng_tracing_ok | |
109 | { out=$($CURDIR/select_poll_epoll -t 2); } 2>/dev/null | |
110 | stop_lttng_tracing_ok | |
111 | pid=$(echo $out | cut -d' ' -f1) | |
112 | ||
113 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
114 | check_trace_content -t 2 -p $pid $TRACE_PATH 2>/dev/null | |
115 | ||
116 | destroy_lttng_session_ok $SESSION_NAME | |
117 | ||
118 | rm -rf $TRACE_PATH | |
119 | } | |
120 | ||
8b3b99e2 | 121 | function test_pselect_invalid_fd() |
a0b1f42c JD |
122 | { |
123 | TRACE_PATH=$(mktemp -d) | |
124 | SESSION_NAME="syscall_payload" | |
125 | SYSCALL_LIST="pselect6" | |
126 | ||
8b3b99e2 | 127 | diag "pselect with invalid FD" |
a0b1f42c JD |
128 | |
129 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
130 | ||
131 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
132 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
133 | ||
134 | start_lttng_tracing_ok | |
135 | { out=$($CURDIR/select_poll_epoll -t 3); } 2>/dev/null | |
136 | stop_lttng_tracing_ok | |
137 | pid=$(echo $out | cut -d' ' -f1) | |
138 | ||
139 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
140 | check_trace_content -t 3 -p $pid $TRACE_PATH 2>/dev/null | |
141 | ||
142 | destroy_lttng_session_ok $SESSION_NAME | |
143 | ||
144 | rm -rf $TRACE_PATH | |
145 | } | |
146 | ||
147 | function test_big_ppoll() | |
148 | { | |
149 | TRACE_PATH=$(mktemp -d) | |
150 | SESSION_NAME="syscall_payload" | |
151 | SYSCALL_LIST="ppoll" | |
152 | ||
153 | diag "ppoll with 2047 FDs" | |
154 | ||
155 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
156 | ||
157 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
158 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
159 | ||
160 | start_lttng_tracing_ok | |
161 | { out=$(yes | $CURDIR/select_poll_epoll -t 4); } 2>/dev/null | |
162 | stop_lttng_tracing_ok | |
163 | pid=$(echo $out | cut -d' ' -f1) | |
164 | ||
165 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
166 | check_trace_content -t 4 -p $pid $TRACE_PATH 2>/dev/null | |
167 | ||
168 | destroy_lttng_session_ok $SESSION_NAME | |
169 | ||
170 | rm -rf $TRACE_PATH | |
171 | } | |
172 | ||
173 | function test_ppoll_overflow() | |
174 | { | |
175 | TRACE_PATH=$(mktemp -d) | |
176 | SESSION_NAME="syscall_payload" | |
177 | SYSCALL_LIST="ppoll" | |
178 | ||
179 | diag "ppoll buffer overflow, should segfault, waits for input" | |
180 | ||
181 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
182 | ||
183 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
184 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
185 | ||
186 | start_lttng_tracing_ok | |
187 | diag "Expect segfaults" | |
188 | { out=$(yes | $CURDIR/select_poll_epoll -t 5); } 2>/dev/null | |
189 | stop_lttng_tracing_ok | |
190 | echo $out | |
191 | pid=$(echo $out | cut -d' ' -f1) | |
192 | ||
193 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
194 | ||
195 | check_trace_content -t 5 -p $pid $TRACE_PATH 2>/dev/null | |
196 | ||
197 | destroy_lttng_session_ok $SESSION_NAME | |
198 | ||
199 | rm -rf $TRACE_PATH | |
200 | } | |
201 | ||
202 | function test_pselect_invalid_ptr() | |
203 | { | |
204 | TRACE_PATH=$(mktemp -d) | |
205 | SESSION_NAME="syscall_payload" | |
206 | SYSCALL_LIST="pselect6" | |
207 | ||
208 | diag "pselect with invalid pointer, waits for input" | |
209 | ||
210 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
211 | ||
212 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
213 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
214 | ||
215 | start_lttng_tracing_ok | |
216 | { out=$(yes | $CURDIR/select_poll_epoll -t 6); } 2>/dev/null | |
217 | stop_lttng_tracing_ok | |
218 | pid=$(echo $out | cut -d' ' -f1) | |
219 | ||
220 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
221 | check_trace_content -t 6 -p $pid $TRACE_PATH 2>/dev/null | |
222 | ||
223 | destroy_lttng_session_ok $SESSION_NAME | |
224 | ||
225 | rm -rf $TRACE_PATH | |
226 | } | |
227 | ||
228 | function test_ppoll_ulong_max() | |
229 | { | |
230 | TRACE_PATH=$(mktemp -d) | |
231 | SESSION_NAME="syscall_payload" | |
232 | SYSCALL_LIST="ppoll" | |
233 | ||
234 | diag "ppoll with ulong_max fds, waits for input" | |
235 | ||
236 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
237 | ||
238 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
239 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
240 | ||
241 | start_lttng_tracing_ok | |
242 | { out=$(yes | $CURDIR/select_poll_epoll -t 7); } 2>/dev/null | |
243 | stop_lttng_tracing_ok | |
244 | pid=$(echo $out | cut -d' ' -f1) | |
245 | ||
246 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
247 | check_trace_content -t 7 -p $pid $TRACE_PATH 2>/dev/null | |
248 | ||
249 | destroy_lttng_session_ok $SESSION_NAME | |
250 | ||
251 | rm -rf $TRACE_PATH | |
252 | } | |
253 | ||
254 | function test_epoll_pwait_invalid_ptr() | |
255 | { | |
256 | TRACE_PATH=$(mktemp -d) | |
257 | SESSION_NAME="syscall_payload" | |
258 | SYSCALL_LIST="epoll_pwait" | |
259 | ||
260 | diag "epoll_pwait with invalid pointer, waits for input" | |
261 | ||
262 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
263 | ||
264 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
265 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
266 | ||
267 | start_lttng_tracing_ok | |
268 | { out=$(yes | $CURDIR/select_poll_epoll -t 8); } 2>/dev/null | |
269 | stop_lttng_tracing_ok | |
270 | pid=$(echo $out | cut -d' ' -f1) | |
271 | ||
272 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
273 | check_trace_content -t 8 -p $pid $TRACE_PATH 2>/dev/null | |
274 | ||
275 | destroy_lttng_session_ok $SESSION_NAME | |
276 | ||
277 | rm -rf $TRACE_PATH | |
278 | } | |
279 | ||
280 | function test_epoll_pwait_int_max() | |
281 | { | |
282 | TRACE_PATH=$(mktemp -d) | |
283 | SESSION_NAME="syscall_payload" | |
284 | SYSCALL_LIST="epoll_pwait" | |
285 | ||
286 | diag "epoll_pwait with maxevents set to INT_MAX, waits for input" | |
287 | ||
288 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
289 | ||
290 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
291 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
292 | ||
293 | start_lttng_tracing_ok | |
294 | { out=$(yes | $CURDIR/select_poll_epoll -t 9); } 2>/dev/null | |
295 | stop_lttng_tracing_ok | |
296 | pid=$(echo $out | cut -d' ' -f1) | |
297 | ||
298 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
299 | check_trace_content -t 9 -p $pid $TRACE_PATH 2>/dev/null | |
300 | ||
301 | destroy_lttng_session_ok $SESSION_NAME | |
302 | ||
303 | rm -rf $TRACE_PATH | |
304 | } | |
305 | ||
306 | function test_ppoll_concurrent() | |
307 | { | |
308 | TRACE_PATH=$(mktemp -d) | |
309 | SESSION_NAME="syscall_payload" | |
310 | SYSCALL_LIST="ppoll" | |
311 | ||
312 | diag "ppoll with concurrent updates of the structure from user-space, stress test (3000 iterations), waits for input + timeout 1ms" | |
313 | ||
314 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
315 | ||
316 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
317 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
318 | ||
319 | start_lttng_tracing_ok | |
320 | { out=$(yes | $CURDIR/select_poll_epoll -t 10); } 2>/dev/null | |
321 | stop_lttng_tracing_ok | |
322 | pid=$(echo $out | cut -d' ' -f1) | |
323 | ||
324 | validate_trace "$SYSCALL_LIST" $TRACE_PATH | |
325 | check_trace_content -t 10 -p $pid $TRACE_PATH 2>/dev/null | |
326 | ||
327 | destroy_lttng_session_ok $SESSION_NAME | |
328 | ||
329 | rm -rf $TRACE_PATH | |
330 | } | |
331 | ||
332 | function test_epoll_pwait_concurrent() | |
333 | { | |
334 | TRACE_PATH=$(mktemp -d) | |
335 | SESSION_NAME="syscall_payload" | |
336 | SYSCALL_LIST="epoll_ctl,epoll_pwait" | |
337 | ||
338 | diag "epoll_pwait with concurrent munmap of the buffer from user-space, should randomly segfault, run multiple times, waits for input + timeout 1ms" | |
339 | ||
340 | create_lttng_session_ok $SESSION_NAME $TRACE_PATH | |
341 | ||
342 | lttng_enable_kernel_syscall_ok $SESSION_NAME $SYSCALL_LIST | |
343 | add_context_kernel_ok $SESSION_NAME channel0 pid | |
344 | ||
345 | start_lttng_tracing_ok | |
346 | diag "Expect segfaults" | |
347 | for i in $(seq 1 100); do | |
348 | { out=$($CURDIR/select_poll_epoll -t 11); } 2>/dev/null | |
349 | done | |
350 | pid=$(echo $out | cut -d' ' -f1) | |
351 | stop_lttng_tracing_ok | |
352 | ||
353 | # epoll_wait is not always generated in the trace (stress test) | |
354 | validate_trace "epoll_ctl" $TRACE_PATH | |
355 | check_trace_content -t 11 -p $pid $TRACE_PATH 2>/dev/null | |
356 | ||
357 | destroy_lttng_session_ok $SESSION_NAME | |
358 | ||
359 | rm -rf $TRACE_PATH | |
360 | } | |
361 | ||
362 | # MUST set TESTDIR before calling those functions | |
363 | plan_tests $NUM_TESTS | |
364 | ||
365 | print_test_banner "$TEST_DESC" | |
366 | ||
367 | if [ "$(id -u)" == "0" ]; then | |
368 | isroot=1 | |
369 | else | |
370 | isroot=0 | |
371 | fi | |
372 | ||
373 | skip $isroot "Root access is needed. Skipping all tests." $NUM_TESTS || | |
374 | { | |
9e2d9d2b JR |
375 | validate_lttng_modules_present |
376 | ||
a0b1f42c JD |
377 | start_lttng_sessiond |
378 | ||
379 | test_working_cases | |
380 | test_timeout_cases | |
8b3b99e2 | 381 | test_pselect_invalid_fd |
a0b1f42c JD |
382 | test_big_ppoll |
383 | test_ppoll_overflow | |
384 | test_pselect_invalid_ptr | |
385 | test_ppoll_ulong_max | |
386 | test_epoll_pwait_invalid_ptr | |
387 | test_epoll_pwait_int_max | |
388 | test_ppoll_concurrent | |
389 | test_epoll_pwait_concurrent | |
390 | ||
391 | stop_lttng_sessiond | |
392 | ||
393 | NEW_WARNING=$(dmesg | grep " WARNING:" | cut -d' ' -f1 | tail -1) | |
394 | NEW_OOPS=$(dmesg | grep " OOPS:" | cut -d' ' -f1 | tail -1) | |
395 | NEW_BUG=$(dmesg | grep " BUG:" | cut -d' ' -f1 | tail -1) | |
396 | ||
397 | if test "$LAST_WARNING" != "$NEW_WARNING"; then | |
398 | fail "New WARNING generated" | |
399 | fi | |
400 | if test "$LAST_OOPS" != "$NEW_OOPS"; then | |
401 | fail "New OOPS generated" | |
402 | fi | |
403 | if test "$LAST_BUG" != "$NEW_BUG"; then | |
404 | fail "New BUG generated" | |
405 | fi | |
406 | } |