WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#22: 
new file mode 100644

WARNING: void function return statements are not generally useful
#45: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:19:
+	return;
+}

WARNING: line length of 94 exceeds 80 columns
#100: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:74:
+		prog = (struct bpf_program **)(((char *)skel) + stream_error_arr[i].prog_off);

WARNING: line length of 89 exceeds 80 columns
#109: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:83:
+			ret = bpf_prog_stream_read(prog_fd, 2, buf, sizeof(buf), &ropts);

WARNING: line length of 97 exceeds 80 columns
#115: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:89:
+		ret = bpf_prog_stream_read(prog_fd, BPF_STREAM_STDERR, buf, sizeof(buf), &ropts);

WARNING: line length of 100 exceeds 80 columns
#144: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:118:
+	ASSERT_LT(bpf_prog_stream_read(0, BPF_STREAM_STDOUT, buf, sizeof(buf), &ropts), 0, "error");

WARNING: line length of 90 exceeds 80 columns
#148: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:122:
+	ASSERT_LT(bpf_prog_stream_read(prog_fd, 0, buf, sizeof(buf), &ropts), 0, "error");

WARNING: line length of 105 exceeds 80 columns
#152: FILE: tools/testing/selftests/bpf/prog_tests/stream.c:126:
+	ASSERT_LT(bpf_prog_stream_read(prog_fd, BPF_STREAM_STDOUT, NULL, sizeof(buf), NULL), 0, "error");

ERROR: Macros with complex values should be enclosed in parentheses
#195: FILE: tools/testing/selftests/bpf/progs/stream.c:23:
+#define STREAM_STR (u64)(_STR _STR _STR _STR)

BUT SEE:

   do {} while (0) advice is over-stated in a few situations:

   The more obvious case is macros, like MODULE_PARM_DESC, invoked at
   file-scope, where C disallows code (it must be in functions).  See
   $exceptions if you have one to add by name.

   More troublesome is declarative macros used at top of new scope,
   like DECLARE_PER_CPU.  These might just compile with a do-while-0
   wrapper, but would be incorrect.  Most of these are handled by
   detecting struct,union,etc declaration primitives in $exceptions.

   Theres also macros called inside an if (block), which "return" an
   expression.  These cannot do-while, and need a ({}) wrapper.

   Enjoy this qualification while we work to improve our heuristics.

total: 1 errors, 8 warnings, 0 checks, 232 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 46174ccf535b ("selftests/bpf: Add tests for prog streams") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.