WARNING: line length of 83 exceeds 80 columns
#67: FILE: kernel/bpf/syscall.c:5366:
+		else if (attr->link_create.attach_type == BPF_TRACE_UPROBE_MULTI ||

WARNING: line length of 83 exceeds 80 columns
#68: FILE: kernel/bpf/syscall.c:5367:
+			 attr->link_create.attach_type == BPF_TRACE_UPROBE_SESSION)

WARNING: line length of 81 exceeds 80 columns
#174: FILE: kernel/trace/bpf_trace.c:3416:
+		if (flags & BPF_F_UPROBE_MULTI_RETURN || is_uprobe_session(prog))

WARNING: line length of 88 exceeds 80 columns
#175: FILE: kernel/trace/bpf_trace.c:3417:
+			uprobes[i].consumer.ret_handler = uprobe_multi_link_ret_handler;

total: 0 errors, 4 warnings, 0 checks, 138 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 d1efe41d5df9 ("bpf: Add support for uprobe 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, 138 lines checked