CHECK: extern prototypes should be avoided in .h files
#44: FILE: tools/testing/selftests/bpf/bpf_experimental.h:206:
+extern struct file *bpf_get_task_exe_file(struct task_struct *task) __ksym;

CHECK: extern prototypes should be avoided in .h files
#50: FILE: tools/testing/selftests/bpf/bpf_experimental.h:212:
+extern void bpf_put_file(struct file *file) __ksym;

CHECK: extern prototypes should be avoided in .h files
#60: FILE: tools/testing/selftests/bpf/bpf_experimental.h:222:
+extern int bpf_path_d_path(struct path *path, char *buf, size_t buf__sz) __ksym;

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#86: 
new file mode 100644

WARNING: line length of 100 exceeds 80 columns
#120: FILE: tools/testing/selftests/bpf/progs/verifier_vfs_reject.c:30:
+__failure __msg("arg#0 pointer type STRUCT task_struct must point to scalar, or struct with scalar")

WARNING: line length of 90 exceeds 80 columns
#172: FILE: tools/testing/selftests/bpf/progs/verifier_vfs_reject.c:82:
+__failure __msg("program must be sleepable to call sleepable kfunc bpf_get_task_exe_file")

WARNING: line length of 81 exceeds 80 columns
#236: FILE: tools/testing/selftests/bpf/progs/verifier_vfs_reject.c:146:
+int BPF_PROG(path_d_path_kfunc_untrusted_from_argument, struct task_struct *task)

WARNING: line length of 125 exceeds 80 columns
#265: FILE: tools/testing/selftests/bpf/progs/verifier_vfs_reject.c:175:
+__failure __msg("kernel function bpf_path_d_path args#0 expected pointer to STRUCT path but R1 has a pointer to STRUCT file")

total: 0 errors, 5 warnings, 3 checks, 242 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 5e1a0adcd17d ("selftests/bpf: add negative tests for new VFS based BPF kfuncs") 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, 5 warnings, 3 checks, 242 lines checked