WARNING: line length of 83 exceeds 80 columns
#48: FILE: kernel/bpf/verifier.c:23014:
+	} else if (desc->func_id == special_kfunc_list[KF_bpf_session_is_return] &&

WARNING: line length of 84 exceeds 80 columns
#54: FILE: kernel/bpf/verifier.c:23020:
+		 *       return (((u64 *)ctx)[-1] >> BPF_TRAMP_IS_RETURN_SHIFT) & 1;

WARNING: line length of 91 exceeds 80 columns
#58: FILE: kernel/bpf/verifier.c:23024:
+		insn_buf[1] = BPF_ALU64_IMM(BPF_RSH, BPF_REG_0, BPF_TRAMP_IS_RETURN_SHIFT);

WARNING: line length of 93 exceeds 80 columns
#113: FILE: kernel/trace/bpf_trace.c:3362:
+	if (!is_kprobe_session(prog) && !is_uprobe_session(prog) && !is_trace_fsession(prog))

WARNING: line length of 93 exceeds 80 columns
#134: FILE: kernel/trace/bpf_trace.c:3378:
+	err = err ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_KPROBE, &bpf_session_kfunc_set);

WARNING: line length of 94 exceeds 80 columns
#135: FILE: kernel/trace/bpf_trace.c:3379:
+	err = err ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_TRACING, &bpf_session_kfunc_set);

WARNING: From:/Signed-off-by: email address mismatch: 'From: Menglong Dong <menglong8.dong@gmail.com>' != 'Signed-off-by: Menglong Dong <dongml2@chinatelecom.cn>'

total: 0 errors, 7 warnings, 0 checks, 101 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 b9c6436d9056 ("bpf: support fsession for bpf_session_is_return") 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, 7 warnings, 0 checks, 101 lines checked