make test: ERROR: mmap shmem buffer: No space left on device

[vt-alt]

I thought we would run tests when building a package (for ALT Linux). But frequently runtest fails with a lot of messages like this (on aarch64 and x86_64):

 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer
 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer
 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer
 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer
 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer
 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer
 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer
 ERROR: mmap shmem buffer: No space left on device
mcount: /usr/src/RPM/BUILD/uftrace-0.14/libmcount/record.c:81:prepare_shmem_buffer

uftrace version: v0.14-88-gad862218. Tests are run under user without setting perf_event_paranoid=1 and kptr_restrict=0. Tests are run with make -j$(nproc) (-j32), and there a lot of space on /tmp (64G).

Maybe some tests could be skipped to make them more robust? (And tests faster.)

[namhyung]

Thanks for the report. Maybe there are cases it didn't clean up all the resourses when the test failed. I need to investigate it more.

But for faster and more robust test, you can enable subset of tests with TESTARG argument on the make. For now, I think you can run like this.

$ make -j32 runtest TESTARG=basic

[vt-alt]

Thinks for suggestion, I will use it!