CHECK: Prefer using the BIT macro
#51: FILE: kernel/bpf/helpers.c:3282:
+#define MAX_UNCOMPRESSED_BUF_SIZE	(1 << 28)

CHECK: Prefer using the BIT macro
#53: FILE: kernel/bpf/helpers.c:3284:
+#define CHUNK_SIZE	(1 << 23)

WARNING: line length of 84 exceeds 80 columns
#56: FILE: kernel/bpf/helpers.c:3287:
+ * At present, one global allocator for decompression. Later if needed, changing the

CHECK: Alignment should match open parenthesis
#91: FILE: kernel/bpf/helpers.c:3322:
+static int decompress_mem_allocator_handover(struct decompress_mem_allocator *a,
+		struct mem_range_result *range)

CHECK: Lines should not end with a '('
#122: FILE: kernel/bpf/helpers.c:3353:
+static int decompress_mem_allocator_init(

WARNING: line length of 93 exceeds 80 columns
#126: FILE: kernel/bpf/helpers.c:3357:
+	unsigned long sz = (MAX_UNCOMPRESSED_BUF_SIZE >> PAGE_SHIFT) * sizeof(struct page *);

WARNING: line length of 85 exceeds 80 columns
#139: FILE: kernel/bpf/helpers.c:3370:
+static void decompress_mem_allocator_fini(struct decompress_mem_allocator *allocator)

CHECK: multiple assignments should be avoided
#167: FILE: kernel/bpf/helpers.c:3398:
+		a->chunk_start = a->chunk_cur = vmap_decompressed_chunk();

WARNING: Do not crash the kernel unless it is absolutely unavoidable--use WARN_ON_ONCE() plus recovery code (if feasible) instead of BUG() or variants
#173: FILE: kernel/bpf/helpers.c:3404:
+	BUG_ON(free < 0);

WARNING: line length of 85 exceeds 80 columns
#180: FILE: kernel/bpf/helpers.c:3411:
+		if (unlikely((a->pg_idx >= MAX_UNCOMPRESSED_BUF_SIZE >> PAGE_SHIFT)))

CHECK: multiple assignments should be avoided
#191: FILE: kernel/bpf/helpers.c:3422:
+		a->chunk_start = a->chunk_cur = vmap_decompressed_chunk();

WARNING: line length of 92 exceeds 80 columns
#201: FILE: kernel/bpf/helpers.c:3432:
+__bpf_kfunc struct mem_range_result *bpf_decompress(char *image_gz_payload, int image_gz_sz)

WARNING: line length of 81 exceeds 80 columns
#226: FILE: kernel/bpf/helpers.c:3457:
+	ret = copy_from_kernel_nofault(input_buf, image_gz_payload, image_gz_sz);

CHECK: Alignment should match open parenthesis
#231: FILE: kernel/bpf/helpers.c:3462:
+		pr_err("Error when copying from 0x%p, size:0x%x\n",
+				image_gz_payload, image_gz_sz);

CHECK: Alignment should match open parenthesis
#245: FILE: kernel/bpf/helpers.c:3476:
+	ret = decompressor(input_buf, image_gz_sz, NULL, flush,
+				NULL, NULL, NULL);

total: 0 errors, 7 warnings, 8 checks, 241 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 37541490db8d ("bpf: Introduce decompressor kfunc") 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, 7 warnings, 8 checks, 241 lines checked