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[Jürg Häfliger <1871613@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1871613

Title:
  ubuntu_bpf test failed to build on Eoan

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Eoan:
  Fix Released

Bug description:
  Issue found on 5.3.0-47.39 Eoan

  Test failed to build with error message below:
  make[1]: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf'
  make: Leaving directory '/home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests'
  stderr:
  Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h' differs from latest version at 'include/uapi/linux/if_link.h'
  prog_tests/send_signal.c: In function 'test_send_signal_common':
  prog_tests/send_signal.c:52:3: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
     52 |   write(pipe_c2p[1], buf, 1);
        |   ^~~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/send_signal.c:55:3: warning: ignoring return value of 'read', declared with attribute warn_unused_result [-Wunused-result]
     55 |   read(pipe_p2c[0], buf, 1);
        |   ^~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/send_signal.c:61:4: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
     61 |    write(pipe_c2p[1], "2", 1);
        |    ^~~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/send_signal.c:63:4: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
     63 |    write(pipe_c2p[1], "0", 1);
        |    ^~~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/send_signal.c:66:3: warning: ignoring return value of 'read', declared with attribute warn_unused_result [-Wunused-result]
     66 |   read(pipe_p2c[0], buf, 1);
        |   ^~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/send_signal.c:109:2: warning: ignoring return value of 'read', declared with attribute warn_unused_result [-Wunused-result]
    109 |  read(pipe_c2p[0], buf, 1);
        |  ^~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/send_signal.c:117:2: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
    117 |  write(pipe_p2c[1], buf, 1);
        |  ^~~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/send_signal.c:131:2: warning: ignoring return value of 'write', declared with attribute warn_unused_result [-Wunused-result]
    131 |  write(pipe_p2c[1], buf, 1);
        |  ^~~~~~~~~~~~~~~~~~~~~~~~~~
  prog_tests/sockmap_basic.c: In function 'connected_socket_v4':
  prog_tests/sockmap_basic.c:22:6: warning: implicit declaration of function 'CHECK_FAIL' [-Wimplicit-function-declaration]
     22 |  if (CHECK_FAIL(s == -1))
        |      ^~~~~~~~~~
  prog_tests/sockmap_basic.c:26:22: error: 'SOL_TCP' undeclared (first use in this function); did you mean 'SOL_TIPC'?
     26 |  err = setsockopt(s, SOL_TCP, TCP_REPAIR, &repair, sizeof(repair));
        |                      ^~~~~~~
        |                      SOL_TIPC
  prog_tests/sockmap_basic.c:26:22: note: each undeclared identifier is reported only once for each function it appears in
  prog_tests/sockmap_basic.c: In function 'test_sockmap_basic':
  prog_tests/sockmap_basic.c:75:6: warning: implicit declaration of function 'test__start_subtest' [-Wimplicit-function-declaration]
     75 |  if (test__start_subtest("sockmap create_update_free"))
        |      ^~~~~~~~~~~~~~~~~~~
  prog_tests/stacktrace_build_id_nmi.c: In function 'read_perf_max_sample_freq':
  prog_tests/stacktrace_build_id_nmi.c:12:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result]
     12 |  fscanf(f, "%llu", &sample_freq);
        |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  make[1]: *** [../lib.mk:141: /home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf/test_progs] Error 1
  make: *** [Makefile:136: all] Error 2

  This is blocking the net test in kernel selftest as well, as it will
  try to build bpf test first.

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