CHECK: Please don't use multiple blank lines
#165: FILE: tools/lib/bpf/btf.h:339:
 
+

CHECK: multiple assignments should be avoided
#279: FILE: tools/lib/bpf/libbpf.c:12891:
+			btf_obj_fd = btf_type_id = 0;

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, 1 warnings, 2 checks, 252 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 7879d03d948d ("libbpf: add btf type hash lookup support") 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, 1 warnings, 2 checks, 252 lines checked