WARNING: Prefer strscpy, strscpy_pad, or __nonstring over strncpy - see: https://github.com/KSPP/linux/issues/90
#49: FILE: tools/testing/selftests/bpf/prog_tests/bpf_iter.c:349:
+		strncpy(test_data, "test_data", 10);

WARNING: line length of 94 exceeds 80 columns
#169: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:98:
+	ret = bpf_copy_from_user_task_str((char *)task_str1, sizeof(task_str1), ptr, task, 0);

WARNING: line length of 81 exceeds 80 columns
#175: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:104:
+	/* Read an invalid pointer and ensure we get error with pad zeros flag */

WARNING: line length of 84 exceeds 80 columns
#187: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:116:
+	ret = bpf_copy_from_user_task_str((char *)task_str2, 10, user_ptr, task, 0);

WARNING: line length of 95 exceeds 80 columns
#189: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:118:
+	if (bpf_strncmp(task_str2, 10, "test_data\0") != 0 || ret != 10 || task->tgid != pid) {

WARNING: line length of 83 exceeds 80 columns
#195: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:124:
+	ret = bpf_copy_from_user_task_str((char *)task_str3, 2, user_ptr, task, 0);

WARNING: line length of 84 exceeds 80 columns
#202: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:131:
+	ret = bpf_copy_from_user_task_str((char *)task_str4, 20, user_ptr, task, 0);

CHECK: Logical continuations should be on the previous line
#204: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:133:
+	if (bpf_strncmp(task_str4, 10, "test_data\0") != 0 || ret != 10
+	    || task_str4[sizeof(task_str4) - 1] != 'a') {

WARNING: line length of 98 exceeds 80 columns
#210: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:139:
+	ret = bpf_copy_from_user_task_str((char *)task_str4, 20, user_ptr, task, BPF_F_PAD_ZEROS);

CHECK: Logical continuations should be on the previous line
#212: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:141:
+	if (bpf_strncmp(task_str4, 10, "test_data\0") != 0 || ret != 10
+	    || task_str4[sizeof(task_str4) - 1] != '\0') {

WARNING: line length of 96 exceeds 80 columns
#225: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:154:
+	ret = bpf_copy_from_user_task_str(big_str1, 5000, user_ptr_long, task, BPF_F_PAD_ZEROS);

CHECK: Logical continuations should be on the previous line
#227: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:156:
+	if (bpf_strncmp(big_str1, 4, "baba") != 0 || ret != 5000
+	    || bpf_strncmp(big_str1 + 4996, 4, "bab\0") != 0) {

WARNING: line length of 96 exceeds 80 columns
#247: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:176:
+	ret = bpf_copy_from_user_task_str(big_str2, 5005, user_ptr_long, task, BPF_F_PAD_ZEROS);

CHECK: Logical continuations should be on the previous line
#249: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:178:
+	if (bpf_strncmp(big_str2, 4, "baba") != 0 || ret != 5000
+	    || bpf_strncmp(big_str2 + 4996, 5, "bab\0\0") != 0) {

WARNING: line length of 82 exceeds 80 columns
#255: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:184:
+	ret = bpf_copy_from_user_task_str(big_str3, 4996, user_ptr_long, task, 0);

CHECK: Logical continuations should be on the previous line
#257: FILE: tools/testing/selftests/bpf/progs/bpf_iter_tasks.c:186:
+	if (bpf_strncmp(big_str3, 4, "baba") != 0 || ret != 4996
+	    || bpf_strncmp(big_str3 + 4992, 4, "bab\0") != 0) {

total: 0 errors, 11 warnings, 5 checks, 260 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 e57262caac4c ("selftests/bpf: Add tests for bpf_copy_from_user_task_str") 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, 11 warnings, 5 checks, 260 lines checked