WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#32: 
new file mode 100644

CHECK: Please don't use multiple blank lines
#57: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:21:
+
+

WARNING: Missing a blank line after declarations
#66: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:30:
+	int memfd = memfd_create("memfd_test", MFD_ALLOW_SEALING);
+	ASSERT_OK_FD(memfd, "memfd_create");

WARNING: Missing a blank line after declarations
#73: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:37:
+	int dev_udmabuf = open("/dev/udmabuf", O_RDONLY);
+	ASSERT_OK_FD(dev_udmabuf, "open udmabuf");

WARNING: Missing a blank line after declarations
#76: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:40:
+	struct udmabuf_create create;
+	create.memfd = memfd;

WARNING: Missing a blank line after declarations
#82: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:46:
+	int udmabuf = ioctl(dev_udmabuf, UDMABUF_CREATE, &create);
+	close(dev_udmabuf);

WARNING: line length of 82 exceeds 80 columns
#87: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:51:
+	int iter_fd = bpf_iter_create(bpf_link__fd(skel->links.dmabuf_collector));

WARNING: Missing a blank line after declarations
#88: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:52:
+	int iter_fd = bpf_iter_create(bpf_link__fd(skel->links.dmabuf_collector));
+	ASSERT_OK_FD(iter_fd, "iter_create");

WARNING: Missing a blank line after declarations
#91: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:55:
+	FILE *iter_file = fdopen(iter_fd, "r");
+	ASSERT_OK_PTR(iter_file, "fdopen");

WARNING: Missing a blank line after declarations
#96: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:60:
+	bool found_test_udmabuf = false;
+	while (getline(&line, &linesize, iter_file) != -1) {

WARNING: line length of 84 exceeds 80 columns
#100: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:64:
+		int nelements = sscanf(line, "ino:%ld size:%ld name:%s exp_name:%s",

CHECK: Alignment should match open parenthesis
#104: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:68:
+		if (nelements == 4 && size == test_buffer_size &&
+				!strcmp(name, test_buffer_name) &&

WARNING: braces {} are not necessary for single statement blocks
#138: FILE: tools/testing/selftests/bpf/prog_tests/dmabuf_iter.c:102:
+	while (read(iter_fd, buf, sizeof(buf) > 0)) {
+		/* Read out all contents */
+	}

WARNING: line length of 82 exceeds 80 columns
#181: FILE: tools/testing/selftests/bpf/progs/dmabuf_iter.c:23:
+		    bpf_core_read(&exp_name, sizeof(exp_name), &dmabuf->exp_name))

WARNING: line length of 81 exceeds 80 columns
#185: FILE: tools/testing/selftests/bpf/progs/dmabuf_iter.c:27:
+			inode, size, name ? name : "", exp_name ? exp_name : "");

CHECK: Alignment should match open parenthesis
#185: FILE: tools/testing/selftests/bpf/progs/dmabuf_iter.c:27:
+		BPF_SEQ_PRINTF(seq, "ino:%lu size:%llu name:%s exp_name:%s\n",
+			inode, size, name ? name : "", exp_name ? exp_name : "");

total: 0 errors, 13 warnings, 3 checks, 154 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 0cad039b1a90 ("selftests/bpf: Add test for dmabuf_iter") 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.
total: 0 errors, 13 warnings, 3 checks, 154 lines checked