WARNING: line length of 83 exceeds 80 columns
#44: FILE: tools/testing/selftests/bpf/prog_tests/get_stack_raw_tp.c:90:
+	int i, err, prog_fd, exp_cnt = MAX_CNT_RAWTP, key = 0, valid_top_stack = 0;

WARNING: line length of 82 exceeds 80 columns
#105: FILE: tools/testing/selftests/bpf/prog_tests/snprintf_btf.c:58:
+	if (!ASSERT_EQ(bss->stack_out_test_passed, 1, "stack output test failed"))

WARNING: line length of 83 exceeds 80 columns
#185: FILE: tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c:94:
+	/* checks if the verifier correctly marks the stack variable as written. */

CHECK: Alignment should match open parenthesis
#187: FILE: tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c:96:
+	top_usize = bpf_get_stack(ctx, &top_user_stack, sizeof(__u64),
+				   BPF_F_USER_STACK);

total: 0 errors, 3 warnings, 1 checks, 158 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 5f10bcb2e165 ("selftests/bpf: add regression tests for snprintf and get_stack helpers") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES 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.
total: 0 errors, 3 warnings, 1 checks, 158 lines checked