WARNING: line length of 84 exceeds 80 columns
#58: FILE: include/linux/bpf.h:1534:
+	BPF_STREAM_ELEM_F_MASK	= (BPF_STREAM_ELEM_F_PAGE | BPF_STREAM_ELEM_F_NEXT),

CHECK: Please don't use multiple blank lines
#95: FILE: include/linux/bpf.h:2424:
 
+

WARNING: line length of 86 exceeds 80 columns
#178: FILE: kernel/bpf/core.c:2883:
+			WARN_ON_ONCE(!llist_empty(&aux->func[i]->aux->stream[0].log));

WARNING: line length of 86 exceeds 80 columns
#179: FILE: kernel/bpf/core.c:2884:
+			WARN_ON_ONCE(!llist_empty(&aux->func[i]->aux->stream[1].log));

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#257: 
new file mode 100644

WARNING: line length of 86 exceeds 80 columns
#301: FILE: kernel/bpf/stream.c:40:
+#define BPF_STREAM_PAGE_SZ (PAGE_SIZE - offsetofend(struct bpf_stream_page, consumed))

WARNING: line length of 83 exceeds 80 columns
#361: FILE: kernel/bpf/stream.c:100:
+static int bpf_stream_page_check_room(struct bpf_stream_page *stream_page, int len)

WARNING: line length of 86 exceeds 80 columns
#381: FILE: kernel/bpf/stream.c:120:
+static struct bpf_stream_page *bpf_stream_page_from_elem(struct bpf_stream_elem *elem)

WARNING: line length of 102 exceeds 80 columns
#388: FILE: kernel/bpf/stream.c:127:
+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
#392: FILE: kernel/bpf/stream.c:131:
+	stream_page->consumed += round_up(offsetof(struct bpf_stream_elem, str[len]), 8);

ERROR: space required after that close brace '}'
#483: FILE: kernel/bpf/stream.c:222:
+	const int max_len = ARRAY_SIZE((struct bpf_bprintf_buffers){}.buf);

WARNING: line length of 85 exceeds 80 columns
#493: FILE: kernel/bpf/stream.c:232:
+	 * Length denotes the amount of data to be written as part of stream element,

WARNING: line length of 84 exceeds 80 columns
#494: FILE: kernel/bpf/stream.c:233:
+	 * thus includes '\0' byte. We're capped by how much bpf_bprintf_buffers can

WARNING: 'accomodate' may be misspelled - perhaps 'accommodate'?
#495: FILE: kernel/bpf/stream.c:234:
+	 * accomodate, therefore deny allocations that won't fit into them.
 	   ^^^^^^^^^^

WARNING: line length of 83 exceeds 80 columns
#508: FILE: kernel/bpf/stream.c:247:
+static int bpf_stream_push_str(struct bpf_stream *stream, const char *str, int len)

WARNING: line length of 103 exceeds 80 columns
#522: FILE: kernel/bpf/stream.c:261:
+		next = (struct bpf_stream_elem *)((unsigned long)elem->next & ~BPF_STREAM_ELEM_F_MASK);

WARNING: line length of 114 exceeds 80 columns
#542: FILE: kernel/bpf/stream.c:281:
+__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
#562: FILE: kernel/bpf/stream.c:301:
+	/* If the string was truncated, we only wrote until the size of buffer. */

WARNING: line length of 91 exceeds 80 columns
#570: FILE: kernel/bpf/stream.c:309:
+__bpf_kfunc struct bpf_stream *bpf_stream_get(enum bpf_stream_id stream_id, void *aux__ign)

WARNING: line length of 95 exceeds 80 columns
#579: FILE: kernel/bpf/stream.c:318:
+__bpf_kfunc struct bpf_stream_elem_batch *bpf_stream_next_elem_batch(struct bpf_stream *stream)

WARNING: line length of 85 exceeds 80 columns
#641: FILE: kernel/bpf/stream.c:380:
+__bpf_kfunc void bpf_stream_free_elem_batch(struct bpf_stream_elem_batch *elem_batch)

CHECK: Blank lines aren't necessary after an open brace '{'
#643: FILE: kernel/bpf/stream.c:382:
+{
+

WARNING: line length of 93 exceeds 80 columns
#650: FILE: kernel/bpf/stream.c:389:
+__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
#669: FILE: kernel/bpf/stream.c:408:
+	prog = container_of(stream, struct bpf_prog_aux, stream[stream_id - 1])->prog;

WARNING: line length of 90 exceeds 80 columns
#701: FILE: kernel/bpf/stream.c:440:
+BTF_ID_FLAGS(func, bpf_stream_next_elem_batch, KF_ACQUIRE | KF_RET_NULL | KF_TRUSTED_ARGS)

WARNING: line length of 84 exceeds 80 columns
#703: FILE: kernel/bpf/stream.c:442:
+BTF_ID_FLAGS(func, bpf_stream_next_elem, KF_ACQUIRE | KF_RET_NULL | KF_TRUSTED_ARGS)

WARNING: line length of 103 exceeds 80 columns
#733: FILE: kernel/bpf/stream.c:472:
+	ret = register_btf_id_dtor_kfuncs(bpf_stream_dtors, ARRAY_SIZE(bpf_stream_dtors), THIS_MODULE);

WARNING: line length of 92 exceeds 80 columns
#734: FILE: kernel/bpf/stream.c:473:
+	ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_UNSPEC, &bpf_stream_kfunc_set);

WARNING: line length of 103 exceeds 80 columns
#735: FILE: kernel/bpf/stream.c:474:
+	return ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_SYSCALL, &bpf_stream_consumer_kfunc_set);

WARNING: line length of 82 exceeds 80 columns
#752: FILE: kernel/bpf/stream.c:491:
+	/* If the string was truncated, we only wrote until the size of buffer. */

WARNING: line length of 88 exceeds 80 columns
#796: FILE: kernel/bpf/verifier.c:13888:
+			if (meta.func_id == special_kfunc_list[KF_bpf_get_kmem_cache]) {

WARNING: line length of 91 exceeds 80 columns
#800: FILE: kernel/bpf/verifier.c:13890:
+			} else if (meta.func_id == special_kfunc_list[KF_bpf_stream_get]) {

WARNING: line length of 101 exceeds 80 columns
#814: FILE: kernel/bpf/verifier.c:21528:
+		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
#815: FILE: kernel/bpf/verifier.c:21529:
+		struct bpf_insn ld_addrs[2] = { BPF_LD_IMM64(regno, (long)env->prog->aux) };

total: 1 errors, 31 warnings, 2 checks, 729 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 f17237b29d24 ("bpf: Introduce per-prog stdout/stderr 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.