WARNING: line length of 83 exceeds 80 columns
#47: FILE: kernel/bpf/syscall.c:3977:
+		if (prog->expected_attach_type == BPF_TRACE_KPROBE_MULTI_SESSION &&

WARNING: line length of 83 exceeds 80 columns
#64: FILE: kernel/bpf/syscall.c:5246:
+		else if (attr->link_create.attach_type == BPF_TRACE_KPROBE_MULTI ||

WARNING: line length of 89 exceeds 80 columns
#65: FILE: kernel/bpf/syscall.c:5247:
+			 attr->link_create.attach_type == BPF_TRACE_KPROBE_MULTI_SESSION)

WARNING: line length of 81 exceeds 80 columns
#139: FILE: kernel/trace/bpf_trace.c:3079:
+	if ((flags & BPF_F_KPROBE_MULTI_RETURN) || is_kprobe_multi_session(prog))

total: 0 errors, 4 warnings, 0 checks, 104 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 f40a49a9b1f1 ("bpf: Add support for kprobe multi session attach") 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, 0 checks, 104 lines checked