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[Po-Hsu Lin <2035181@xxxxxxxxxxxxxxxxxx>]

Commit 416c6d01244ecbf0abfdb898fd091b50ef951b48 provided by Stefan can
fix this build issue, thanks! Will SRU this to the mailing list.

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https://bugs.launchpad.net/bugs/2035181

Title:
  Regression for ubuntu_bpf test build on Jammy 5.15.0-85.95

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  New

Bug description:
  Issue found with Jammy 5.15.0-85.95 in cycle 2023.09.04

  This issue does not exist with 5.15.0-83.92 in cycle 2023.08.07 (-84
  is a security cycle, in which the ubuntu_bpf test was not triggered
  there)

  Test build failed with:
    CLNG-BPF [test_maps] test_btf_map_in_map.o 
    CLNG-BPF [test_maps] test_btf_newkv.o
    CLNG-BPF [test_maps] test_btf_nokv.o
    CLNG-BPF [test_maps] test_btf_skc_cls_ingress.o
    CLNG-BPF [test_maps] test_cgroup_link.o
    CLNG-BPF [test_maps] test_check_mtu.o
    CLNG-BPF [test_maps] test_cls_redirect.o
  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/bpf.h' differs from latest version at 'include/uapi/linux/bpf.h'
  Warning: Kernel ABI header at 'tools/include/uapi/linux/netlink.h' differs from latest version at 'include/uapi/linux/netlink.h' 
  Warning: Kernel ABI header at 'tools/include/uapi/linux/if_link.h' differs from latest version at 'include/uapi/linux/if_link.h' 
  progs/test_cls_redirect.c:90:2: error: static_assert expression is not an integral constant expression
          sizeof(flow_ports_t) !=
          ^~~~~~~~~~~~~~~~~~~~~~~
  progs/test_cls_redirect.c:91:3: note: cast that performs the conversions of a reinterpret_cast is not allowed in a constant expression
                  offsetofend(struct bpf_sock_tuple, ipv4.dport) -
                  ^
  progs/test_cls_redirect.c:32:3: note: expanded from macro 'offsetofend' 
          (offsetof(TYPE, MEMBER) + sizeof((((TYPE *)0)->MEMBER)))
           ^
  /home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf/tools/include/bpf/bpf_helpers.h:81:33: note: expanded from macro 'offsetof'
  #define offsetof(type, member)  ((unsigned long)&((type *)0)->member)
                                   ^
  progs/test_cls_redirect.c:95:2: error: static_assert expression is not an integral constant expression
          sizeof(flow_ports_t) !=
          ^~~~~~~~~~~~~~~~~~~~~~~
  progs/test_cls_redirect.c:96:3: note: cast that performs the conversions of a reinterpret_cast is not allowed in a constant expression
                  offsetofend(struct bpf_sock_tuple, ipv6.dport) -
                  ^
  progs/test_cls_redirect.c:32:3: note: expanded from macro 'offsetofend' 
          (offsetof(TYPE, MEMBER) + sizeof((((TYPE *)0)->MEMBER)))
           ^
  /home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf/tools/include/bpf/bpf_helpers.h:81:33: note: expanded from macro 'offsetof'
  #define offsetof(type, member)  ((unsigned long)&((type *)0)->member)
                                   ^
  2 errors generated.
  make[1]: *** [Makefile:470: /home/ubuntu/autotest/client/tmp/ubuntu_bpf/src/linux/tools/testing/selftests/bpf/test_cls_redirect.o] Error 1
  make: *** [Makefile:171: all] Error 2

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