WARNING: line length of 81 exceeds 80 columns
#47: FILE: kernel/bpf/syscall.c:4113:
+		return bpf_tracing_prog_attach(prog, 0, 0, 0, attach_type, NULL);

WARNING: line length of 98 exceeds 80 columns
#56: FILE: kernel/bpf/syscall.c:5518:
+static int link_create(union bpf_attr *attr, bpfptr_t uattr, struct bpf_common_attr *common_attrs)

WARNING: line length of 90 exceeds 80 columns
#75: FILE: kernel/bpf/syscall.c:5542:
+				    (char __user *) (unsigned long) common_attrs->log_buf,

CHECK: No space is necessary after a cast
#75: FILE: kernel/bpf/syscall.c:5542:
+				    (char __user *) (unsigned long) common_attrs->log_buf,

WARNING: line length of 84 exceeds 80 columns
#104: FILE: kernel/bpf/syscall.c:5589:
+						      attr->link_create.attach_type,

CHECK: No space is necessary after a cast
#114: FILE: kernel/bpf/syscall.c:5634:
+		(void) bpf_vlog_finalize(log, &log_true_size);

total: 0 errors, 4 warnings, 2 checks, 98 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 e8092bc4d6d4 ("bpf: Report freplace attach failure reason via extended syscall") 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, 4 warnings, 2 checks, 98 lines checked