WARNING: Missing a blank line after declarations
#69: FILE: tools/testing/selftests/bpf/prog_tests/file_reader.c:42:
+	char data[256];
+	LIBBPF_OPTS(bpf_test_run_opts, opts, .data_in = &data, .repeat = 1,

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#173: FILE: tools/testing/selftests/bpf/progs/file_reader.c:59:
+volatile const __u32 user_buf_sz;

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#174: FILE: tools/testing/selftests/bpf/progs/file_reader.c:60:
+volatile const __s32 test_type = -1;

WARNING: line length of 89 exceeds 80 columns
#176: FILE: tools/testing/selftests/bpf/progs/file_reader.c:62:
+static int process_vma(struct task_struct *task, struct vm_area_struct *vma, void *data);

WARNING: line length of 90 exceeds 80 columns
#193: FILE: tools/testing/selftests/bpf/progs/file_reader.c:79:
+	bpf_task_work_schedule_signal(task, &work->tw, &arrmap, task_work_callback, NULL);

WARNING: line length of 88 exceeds 80 columns
#205: FILE: tools/testing/selftests/bpf/progs/file_reader.c:91:
+static int process_vma(struct task_struct *task, struct vm_area_struct *vma, void *data)

WARNING: line length of 91 exceeds 80 columns
#245: FILE: tools/testing/selftests/bpf/progs/file_reader.c:131:
+	/* Verify file contents read from BPF is the same as the one read from userspace */

WARNING: line length of 99 exceeds 80 columns
#313: FILE: tools/testing/selftests/bpf/progs/file_reader.c:199:
+		err = bpf_dynptr_read(&tmp, sizeof(Elf64_Shdr), &dynptr, e_shoff + e_shentsize * i,

WARNING: line length of 81 exceeds 80 columns
#318: FILE: tools/testing/selftests/bpf/progs/file_reader.c:204:
+		string = bpf_dynptr_slice(&dynptr, off + tmp.sh_name, buf, slen);

WARNING: line length of 97 exceeds 80 columns
#338: FILE: tools/testing/selftests/bpf/progs/file_reader.c:224:
+		symbol = bpf_dynptr_slice(&dynptr, symtab.sh_offset + sizeof(Elf64_Sym) * i, buf,

WARNING: line length of 86 exceeds 80 columns
#342: FILE: tools/testing/selftests/bpf/progs/file_reader.c:228:
+		if (symbol->st_name == 0 || ELF64_ST_TYPE(symbol->st_info) != STT_TLS)

WARNING: line length of 98 exceeds 80 columns
#344: FILE: tools/testing/selftests/bpf/progs/file_reader.c:230:
+		string = bpf_dynptr_slice(&dynptr, strtab.sh_offset + symbol->st_name, buf, slen);

WARNING: line length of 92 exceeds 80 columns
#378: FILE: tools/testing/selftests/bpf/progs/file_reader_fail.c:17:
+static long process_vma_unreleased_ref(struct task_struct *task, struct vm_area_struct *vma,

WARNING: line length of 86 exceeds 80 columns
#391: FILE: tools/testing/selftests/bpf/progs/file_reader_fail.c:30:
+__failure __msg("Unreleased reference id=") int on_nanosleep_unreleased_ref(void *ctx)

WARNING: line length of 89 exceeds 80 columns
#395: FILE: tools/testing/selftests/bpf/progs/file_reader_fail.c:34:
+	bpf_find_vma(task, (unsigned long)user_ptr, process_vma_unreleased_ref, NULL, 0);

total: 0 errors, 15 warnings, 0 checks, 379 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 80bc9c0de15b ("selftests/bpf: add file dynptr tests") 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.
total: 0 errors, 15 warnings, 0 checks, 379 lines checked