CHECK: Alignment should match open parenthesis
CHECK: Comparison to NULL could be written "strstr"
ERROR: Macros with complex values should be enclosed in parentheses
WARNING: Improper SPDX comment style for 'tools/testing/selftests/bpf/libarena/include/common.h', please use '/*' instead
WARNING: Improper SPDX comment style for 'tools/testing/selftests/bpf/libarena/include/selftest_helpers.h', please use '/*' instead
WARNING: Missing or malformed SPDX-License-Identifier tag in line 1
WARNING: Prefer __aligned(8) over __attribute__((aligned(8)))
WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
WARNING: __always_unused or __maybe_unused is preferred over __attribute__((__unused__))
WARNING: do not add new typedefs
WARNING: line length of 82 exceeds 80 columns
WARNING: line length of 84 exceeds 80 columns
WARNING: line length of 85 exceeds 80 columns