Comment 0 for bug 2000772

Issue found with K-5.19.0-28-generic on P9 node baltar

This should not be considered as a regression since ubuntu_kernel_selftests will be blocked by the net test crash before this powerpc tests can be started. This was found by manually running the test.

Test build failed with:
gcc -std=gnu99 -O2 -Wall -Werror -DGIT_VERSION='"unknown"' -I/home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/powerpc/include -m64 -no-pie cycles_with_mmcr2_test.c ../../harness.c ../../utils.c ../event.c ../lib.c ebb.c ebb_handler.S trace.c busy_loop.S -o /home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test
In file included from /usr/include/stdio.h:906,
                 from cycles_with_mmcr2_test.c:6:
In function ‘printf’,
    inlined from ‘cycles_with_mmcr2’ at cycles_with_mmcr2_test.c:81:3:
/usr/include/powerpc64le-linux-gnu/bits/stdio2.h:86:10: error: ‘actual’ may be used uninitialized [-Werror=maybe-uninitialized]
   86 | return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cycles_with_mmcr2_test.c: In function ‘cycles_with_mmcr2’:
cycles_with_mmcr2_test.c:25:36: note: ‘actual’ was declared here
   25 | uint64_t val, expected[2], actual;
      | ^~~~~~
cc1: all warnings being treated as errors
make[3]: *** [../../../lib.mk:173: /home/ubuntu/autotest/client/tmp/ubuntu_kernel_selftests/src/linux/tools/testing/selftests/powerpc/pmu/ebb/cycles_with_mmcr2_test] Error 1

Please find attachment for the complete build log.