CHECK: Please don't use multiple blank lines
#173: FILE: include/linux/bpf.h:2429:
 
+

WARNING: line length of 86 exceeds 80 columns
#272: FILE: kernel/bpf/core.c:2888:
+			WARN_ON_ONCE(!llist_empty(&aux->func[i]->aux->stream[0].log));

WARNING: line length of 86 exceeds 80 columns
#273: FILE: kernel/bpf/core.c:2889:
+			WARN_ON_ONCE(!llist_empty(&aux->func[i]->aux->stream[1].log));

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#351: 
new file mode 100644

WARNING: line length of 86 exceeds 80 columns
#393: FILE: kernel/bpf/stream.c:38:
+#define BPF_STREAM_PAGE_SZ (PAGE_SIZE - offsetofend(struct bpf_stream_page, consumed))

WARNING: line length of 83 exceeds 80 columns
#453: FILE: kernel/bpf/stream.c:98:
+static int bpf_stream_page_check_room(struct bpf_stream_page *stream_page, int len)

WARNING: line length of 86 exceeds 80 columns
#473: FILE: kernel/bpf/stream.c:118:
+static struct bpf_stream_page *bpf_stream_page_from_elem(struct bpf_stream_elem *elem)

WARNING: line length of 102 exceeds 80 columns
#480: FILE: kernel/bpf/stream.c:125:
+static struct bpf_stream_elem *bpf_stream_page_push_elem(struct bpf_stream_page *stream_page, int len)

WARNING: line length of 89 exceeds 80 columns
#484: FILE: kernel/bpf/stream.c:129:
+	stream_page->consumed += round_up(offsetof(struct bpf_stream_elem, str[len]), 8);

ERROR: space required after that close brace '}'
#516: FILE: kernel/bpf/stream.c:161:
+	const int max_len = ARRAY_SIZE((struct bpf_bprintf_buffers){}.buf);

WARNING: line length of 85 exceeds 80 columns
#527: FILE: kernel/bpf/stream.c:172:
+	 * Length denotes the amount of data to be written as part of stream element,

WARNING: line length of 84 exceeds 80 columns
#528: FILE: kernel/bpf/stream.c:173:
+	 * thus includes '\0' byte. We're capped by how much bpf_bprintf_buffers can

WARNING: 'accomodate' may be misspelled - perhaps 'accommodate'?
#529: FILE: kernel/bpf/stream.c:174:
+	 * accomodate, therefore deny allocations that won't fit into them.
 	   ^^^^^^^^^^

WARNING: line length of 82 exceeds 80 columns
#543: FILE: kernel/bpf/stream.c:188:
+static int __bpf_stream_push_str(struct llist_head *log, const char *str, int len)

WARNING: line length of 83 exceeds 80 columns
#565: FILE: kernel/bpf/stream.c:210:
+	if (atomic_add_return(len, &stream->capacity) >= BPF_STREAM_MAX_CAPACITY) {

WARNING: line length of 96 exceeds 80 columns
#572: FILE: kernel/bpf/stream.c:217:
+static void bpf_stream_release_capacity(struct bpf_stream *stream, struct bpf_stream_elem *elem)

WARNING: line length of 83 exceeds 80 columns
#579: FILE: kernel/bpf/stream.c:224:
+static int bpf_stream_push_str(struct bpf_stream *stream, const char *str, int len)

WARNING: line length of 114 exceeds 80 columns
#586: FILE: kernel/bpf/stream.c:231:
+__bpf_kfunc int bpf_stream_vprintk(struct bpf_stream *stream, const char *fmt__str, const void *args, u32 len__sz)

WARNING: line length of 82 exceeds 80 columns
#606: FILE: kernel/bpf/stream.c:251:
+	/* If the string was truncated, we only wrote until the size of buffer. */

WARNING: line length of 91 exceeds 80 columns
#614: FILE: kernel/bpf/stream.c:259:
+__bpf_kfunc struct bpf_stream *bpf_stream_get(enum bpf_stream_id stream_id, void *aux__ign)

CHECK: multiple assignments should be avoided
#645: FILE: kernel/bpf/stream.c:290:
+		stream->backlog_head = stream->backlog_tail = NULL;

WARNING: line length of 83 exceeds 80 columns
#682: FILE: kernel/bpf/stream.c:327:
+__bpf_kfunc struct bpf_stream_elem *bpf_stream_next_elem(struct bpf_stream *stream)

WARNING: line length of 93 exceeds 80 columns
#708: FILE: kernel/bpf/stream.c:353:
+__bpf_kfunc struct bpf_stream *bpf_prog_stream_get(enum bpf_stream_id stream_id, u32 prog_id)

WARNING: line length of 86 exceeds 80 columns
#727: FILE: kernel/bpf/stream.c:372:
+	prog = container_of(stream, struct bpf_prog_aux, stream[stream_id - 1])->prog;

WARNING: line length of 84 exceeds 80 columns
#736: FILE: kernel/bpf/stream.c:381:
+BTF_ID_FLAGS(func, bpf_stream_next_elem, KF_ACQUIRE | KF_RET_NULL | KF_TRUSTED_ARGS)

WARNING: line length of 85 exceeds 80 columns
#759: FILE: kernel/bpf/stream.c:404:
+	ret = register_btf_kfunc_id_set(BPF_PROG_TYPE_UNSPEC, &bpf_stream_kfunc_set);

WARNING: line length of 95 exceeds 80 columns
#762: FILE: kernel/bpf/stream.c:407:
+	return register_btf_kfunc_id_set(BPF_PROG_TYPE_SYSCALL, &bpf_stream_syscall_kfunc_set);

WARNING: line length of 82 exceeds 80 columns
#820: FILE: kernel/bpf/stream.c:465:
+	/* If the string was truncated, we only wrote until the size of buffer. */

WARNING: line length of 88 exceeds 80 columns
#893: FILE: kernel/bpf/verifier.c:13891:
+			if (meta.func_id == special_kfunc_list[KF_bpf_get_kmem_cache]) {

WARNING: line length of 91 exceeds 80 columns
#897: FILE: kernel/bpf/verifier.c:13893:
+			} else if (meta.func_id == special_kfunc_list[KF_bpf_stream_get]) {

WARNING: line length of 101 exceeds 80 columns
#911: FILE: kernel/bpf/verifier.c:21529:
+		u32 regno = is_bpf_wq_set_callback_impl_kfunc(desc->func_id) ? BPF_REG_4 : BPF_REG_2;

WARNING: line length of 92 exceeds 80 columns
#912: FILE: kernel/bpf/verifier.c:21530:
+		struct bpf_insn ld_addrs[2] = { BPF_LD_IMM64(regno, (long)env->prog->aux) };

total: 1 errors, 29 warnings, 2 checks, 752 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 4b61521fee1b ("bpf: Introduce BPF standard 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.