LTTng » LTTng-tools

When Yocto Project tests upgrading to gcc 13, we see a ptest failure in lttng-tools (2.13.9) in tests/regression/kernel/test_callstack (6.1 kernel). The log of the failing test:

1. Kernel tracer - Callstack context
   ok 1 - Start session daemon
   PASS: kernel/test_callstack 1 - Start session daemon
2. Userspace callstack test
   ok 2 - Create session callstack in -o /tmp/tmp.test_user_callstack_trace_path.1DdyIt
   PASS: kernel/test_callstack 2 - Create session callstack in -o /tmp/tmp.test_user_callstack_trace_path.1DdyIt
   ok 3 - Enable channel chan0 for session callstack
   PASS: kernel/test_callstack 3 - Enable channel chan0 for session callstack
   ok 4 - Enable kernel syscall gettid for session callstack on channel chan0
   PASS: kernel/test_callstack 4 - Enable kernel syscall gettid for session callstack on channel chan0
   ok 5 - Add context command for type: callstack-user
   PASS: kernel/test_callstack 5 - Add context command for type: callstack-user
   ok 6 - Untrack command with opts: -s callstack --all --pid -k
   PASS: kernel/test_callstack 6 - Untrack command with opts: -s callstack --all --pid -k
   ok 7 - Track command with opts: -s callstack -k --pid=2503
   PASS: kernel/test_callstack 7 - Track command with opts: -s callstack -k --pid=2503
   ok 8 - Start tracing for session
   PASS: kernel/test_callstack 8 - Start tracing for session
   ok 9 - Stop lttng tracing for session
   PASS: kernel/test_callstack 9 - Stop lttng tracing for session
   Traceback (most recent call last):
   File "/usr/lib/lttng-tools/ptest/tests/regression/././kernel//../../utils/parse-callstack.py", line 160, in <module>
   main()
   File "/usr/lib/lttng-tools/ptest/tests/regression/././kernel//../../utils/parse-callstack.py", line 155, in main
   raise Exception('Expected function name not found in recorded callstack')
   Exception: Expected function name not found in recorded callstack
   ok 10 - Destroy session callstack
   PASS: kernel/test_callstack 10 - Destroy session callstack
   not ok 11 - Validate userspace callstack
   FAIL: kernel/test_callstack 11 - Validate userspace callstack
3. Failed test 'Validate userspace callstack'
4. in ./kernel/test_callstack:test_user_callstack() at line 80.
5. Kernel callstack test
   ok 12 - Create session callstack in -o /tmp/tmp.test_kernel_callstack_trace_path.rHPMq3
   PASS: kernel/test_callstack 12 - Create session callstack in -o /tmp/tmp.test_kernel_callstack_trace_path.rHPMq3
   ok 13 - Enable channel chan0 for session callstack
   PASS: kernel/test_callstack 13 - Enable channel chan0 for session callstack
   ok 14 - Enable kernel syscall read for session callstack on channel chan0
   PASS: kernel/test_callstack 14 - Enable kernel syscall read for session callstack on channel chan0
   ok 15 - Add context command for type: callstack-kernel
   PASS: kernel/test_callstack 15 - Add context command for type: callstack-kernel
   ok 16 - Untrack command with opts: -s callstack --all --pid -k
   PASS: kernel/test_callstack 16 - Untrack command with opts: -s callstack --all --pid -k
   ok 17 - Track command with opts: -s callstack -k --pid=2532
   PASS: kernel/test_callstack 17 - Track command with opts: -s callstack -k --pid=2532
   ok 18 - Start tracing for session
   PASS: kernel/test_callstack 18 - Start tracing for session
   ok 19 - Stop lttng tracing for session
   PASS: kernel/test_callstack 19 - Stop lttng tracing for session
   ok 20 - Destroy session callstack
   PASS: kernel/test_callstack 20 - Destroy session callstack
   ok 21 - Validate kernel callstack
   PASS: kernel/test_callstack 21 - Validate kernel callstack
6. Killing (signal SIGTERM) lttng-sessiond and lt-lttng-sessiond pids: 2469 2470
   ok 22 - Wait after kill session daemon
   PASS: kernel/test_callstack 22 - Wait after kill session daemon
7. Looks like you failed 1 test of 22.

I've attached the test binary to this bug.