WARNING: Missing a blank line after declarations
#59: FILE: tools/testing/selftests/bpf/prog_tests/stack_arg.c:12:
+	int err, prog_fd;
+	LIBBPF_OPTS(bpf_test_run_opts, topts,

CHECK: Alignment should match open parenthesis
#60: FILE: tools/testing/selftests/bpf/prog_tests/stack_arg.c:13:
+	LIBBPF_OPTS(bpf_test_run_opts, topts,
+		.data_in = &pkt_v4,

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#214: FILE: tools/testing/selftests/bpf/progs/stack_arg.c:28:
+const volatile bool has_stack_arg = true;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#394: FILE: tools/testing/selftests/bpf/progs/stack_arg.c:208:
+const volatile bool has_stack_arg = false;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#457: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:11:
+const volatile bool has_stack_arg = true;

ERROR: space prohibited before that ':' (ctx:WxV)
#460: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:14:
+	u64 :64;
 	    ^

ERROR: space prohibited before that ':' (ctx:WxV)
#461: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:15:
+	u64 :64;
 	    ^

WARNING: line length of 96 exceeds 80 columns
#464: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:18:
+extern int bpf_iter_testmod_seq_new(struct bpf_iter_testmod_seq *it, s64 value, int cnt) __ksym;

WARNING: externs should be avoided in .c files
#465: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:19:
+extern int *bpf_iter_testmod_seq_next(struct bpf_iter_testmod_seq *it) __ksym;

WARNING: line length of 81 exceeds 80 columns
#466: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:20:
+extern void bpf_iter_testmod_seq_destroy(struct bpf_iter_testmod_seq *it) __ksym;

WARNING: const array should probably be static const
#534: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:88:
+const char cstr[] = "hello";

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#558: FILE: tools/testing/selftests/bpf/progs/stack_arg_kfunc.c:112:
+const volatile bool has_stack_arg = false;

WARNING: line length of 82 exceeds 80 columns
#638: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:847:
+__bpf_kfunc u64 bpf_kfunc_call_stack_arg_dynptr(u64 a, u64 b, u64 c, u64 d, u64 e,

CHECK: Alignment should match open parenthesis
#639: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:848:
+__bpf_kfunc u64 bpf_kfunc_call_stack_arg_dynptr(u64 a, u64 b, u64 c, u64 d, u64 e,
+					       struct bpf_dynptr *ptr)

WARNING: line length of 84 exceeds 80 columns
#659: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:868:
+					      struct bpf_iter_testmod_seq *it__iter)

WARNING: line length of 85 exceeds 80 columns
#664: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:873:
+__bpf_kfunc u64 bpf_kfunc_call_stack_arg_const_str(u64 a, u64 b, u64 c, u64 d, u64 e,

WARNING: line length of 81 exceeds 80 columns
#670: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod.c:879:
+__bpf_kfunc u64 bpf_kfunc_call_stack_arg_timer(u64 a, u64 b, u64 c, u64 d, u64 e,

WARNING: line length of 82 exceeds 80 columns
#720: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod_kfunc.h:123:
+__u64 bpf_kfunc_call_stack_arg_dynptr(__u64 a, __u64 b, __u64 c, __u64 d, __u64 e,

WARNING: line length of 82 exceeds 80 columns
#725: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod_kfunc.h:128:
+				    struct bpf_iter_testmod_seq *it__iter) __ksym;

WARNING: line length of 85 exceeds 80 columns
#726: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod_kfunc.h:129:
+__u64 bpf_kfunc_call_stack_arg_const_str(__u64 a, __u64 b, __u64 c, __u64 d, __u64 e,

WARNING: line length of 81 exceeds 80 columns
#728: FILE: tools/testing/selftests/bpf/test_kmods/bpf_testmod_kfunc.h:131:
+__u64 bpf_kfunc_call_stack_arg_timer(__u64 a, __u64 b, __u64 c, __u64 d, __u64 e,

total: 2 errors, 17 warnings, 2 checks, 661 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 c0e7fb5db8f6 ("selftests/bpf: Add tests for BPF function stack arguments") 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.