WARNING: line length of 81 exceeds 80 columns
#129: FILE: kernel/bpf/syscall.c:3637:
+			bpf_link_init(&fslink->fexit.link, BPF_LINK_TYPE_TRACING,

WARNING: line length of 81 exceeds 80 columns
#130: FILE: kernel/bpf/syscall.c:3638:
+				      &bpf_tracing_link_lops, prog, attach_type);

CHECK: multiple assignments should be avoided
#185: FILE: kernel/bpf/trampoline.c:605:
+	okind = kind = bpf_attach_type_to_tramp(link->link.prog);

WARNING: line length of 82 exceeds 80 columns
#205: FILE: kernel/bpf/trampoline.c:637:
+	hlist_for_each_entry(link_existing, &tr->progs_hlist[kind], tramp_hlist) {

WARNING: line length of 81 exceeds 80 columns
#215: FILE: kernel/bpf/trampoline.c:647:
+		fslink = container_of(link, struct bpf_fsession_link, link.link);

WARNING: line length of 81 exceeds 80 columns
#242: FILE: kernel/bpf/trampoline.c:695:
+		fslink = container_of(link, struct bpf_fsession_link, link.link);

WARNING: line length of 107 exceeds 80 columns
#312: FILE: kernel/bpf/verifier.c:24594:
+		verbose(env, "Attaching fexit/session/fmod_ret to __noreturn function '%s' is rejected.\n",

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, 1 checks, 268 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 40a73b1cab46 ("bpf: add tracing session support") 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, 1 checks, 268 lines checked