WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#25: 
new file mode 100644

ERROR: do not initialise globals to 0
#43: FILE: tools/testing/selftests/bpf/prog_tests/timer_lockup.c:14:
+volatile int k = 0;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#43: FILE: tools/testing/selftests/bpf/prog_tests/timer_lockup.c:14:
+volatile int k = 0;

CHECK: Alignment should match open parenthesis
#47: FILE: tools/testing/selftests/bpf/prog_tests/timer_lockup.c:18:
+	LIBBPF_OPTS(bpf_test_run_opts, opts,
+		.data_in = &pkt_v4,

WARNING: line length of 99 exceeds 80 columns
#57: FILE: tools/testing/selftests/bpf/prog_tests/timer_lockup.c:28:
+	ASSERT_OK(pthread_setaffinity_np(pthread_self(), sizeof(cpuset), &cpuset), "cpu affinity");

WARNING: line length of 90 exceeds 80 columns
#90: FILE: tools/testing/selftests/bpf/prog_tests/timer_lockup.c:61:
+	if (!ASSERT_OK(pthread_create(&thrds[0], NULL, timer_lockup_thread, &timer1_prog),

WARNING: line length of 90 exceeds 80 columns
#93: FILE: tools/testing/selftests/bpf/prog_tests/timer_lockup.c:64:
+	if (!ASSERT_OK(pthread_create(&thrds[1], NULL, timer_lockup_thread, &timer2_prog),

WARNING: void function return statements are not generally useful
#115: FILE: tools/testing/selftests/bpf/prog_tests/timer_lockup.c:86:
+	return;
+}

WARNING: braces {} are not necessary for single statement blocks
#160: FILE: tools/testing/selftests/bpf/progs/timer_lockup.c:39:
+	if (timer) {
+		timer2_err = bpf_timer_cancel(timer);
+	}

WARNING: braces {} are not necessary for single statement blocks
#172: FILE: tools/testing/selftests/bpf/progs/timer_lockup.c:51:
+	if (timer) {
+		timer1_err = bpf_timer_cancel(timer);
+	}

total: 1 errors, 8 warnings, 1 checks, 173 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 bd3a1b84aef1 ("selftests/bpf: Add timer lockup selftest") 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.