WARNING: line length of 87 exceeds 80 columns
#38: FILE: kernel/bpf/helpers.c:3116:
+BTF_ID_FLAGS(func, bpf_iter_kmem_cache_next, KF_ITER_NEXT | KF_RET_NULL | KF_SLEEPABLE)

WARNING: Prefer __aligned(8) over __attribute__((aligned(8)))
#54: FILE: kernel/bpf/kmem_cache_iter.c:14:
+} __attribute__((aligned(8)));

WARNING: Prefer __aligned(8) over __attribute__((aligned(8)))
#58: FILE: kernel/bpf/kmem_cache_iter.c:18:
+} __attribute__((aligned(8)));

WARNING: line length of 87 exceeds 80 columns
#75: FILE: kernel/bpf/kmem_cache_iter.c:35:
+__bpf_kfunc struct kmem_cache *bpf_iter_kmem_cache_next(struct bpf_iter_kmem_cache *it)

CHECK: Comparison to NULL could be written "!s"
#126: FILE: kernel/bpf/kmem_cache_iter.c:86:
+	if (s == NULL || s == KMEM_CACHE_POS_START)

total: 0 errors, 4 warnings, 1 checks, 209 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 995d2c18f1ad ("bpf: Add open coded version of kmem_cache iterator") 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, 1 checks, 209 lines checked