diff options
| author | Kees Cook <kees@kernel.org> | 2026-02-20 23:49:23 -0800 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-02-21 01:02:28 -0800 |
| commit | 69050f8d6d075dc01af7a5f2f550a8067510366f (patch) | |
| tree | bb265f94d9dfa7876c06a5d9f88673d496a15341 /kernel/bpf/core.c | |
| parent | d39a1d7486d98668dd34aaa6732aad7977c45f5a (diff) | |
treewide: Replace kmalloc with kmalloc_obj for non-scalar types
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
Diffstat (limited to 'kernel/bpf/core.c')
| -rw-r--r-- | kernel/bpf/core.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 5ab6bace7d0d..80b3e94f3fe3 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -108,7 +108,7 @@ struct bpf_prog *bpf_prog_alloc_no_stats(unsigned int size, gfp_t gfp_extra_flag if (fp == NULL) return NULL; - aux = kzalloc(sizeof(*aux), bpf_memcg_flags(GFP_KERNEL | gfp_extra_flags)); + aux = kzalloc_obj(*aux, bpf_memcg_flags(GFP_KERNEL | gfp_extra_flags)); if (aux == NULL) { vfree(fp); return NULL; @@ -180,9 +180,9 @@ int bpf_prog_alloc_jited_linfo(struct bpf_prog *prog) if (!prog->aux->nr_linfo || !prog->jit_requested) return 0; - prog->aux->jited_linfo = kvcalloc(prog->aux->nr_linfo, - sizeof(*prog->aux->jited_linfo), - bpf_memcg_flags(GFP_KERNEL | __GFP_NOWARN)); + prog->aux->jited_linfo = kvzalloc_objs(*prog->aux->jited_linfo, + prog->aux->nr_linfo, + bpf_memcg_flags(GFP_KERNEL | __GFP_NOWARN)); if (!prog->aux->jited_linfo) return -ENOMEM; @@ -910,8 +910,8 @@ static struct bpf_prog_pack *alloc_new_pack(bpf_jit_fill_hole_t bpf_fill_ill_ins struct bpf_prog_pack *pack; int err; - pack = kzalloc(struct_size(pack, bitmap, BITS_TO_LONGS(BPF_PROG_CHUNK_COUNT)), - GFP_KERNEL); + pack = kzalloc_flex(*pack, bitmap, BITS_TO_LONGS(BPF_PROG_CHUNK_COUNT), + GFP_KERNEL); if (!pack) return NULL; pack->ptr = bpf_jit_alloc_exec(BPF_PROG_PACK_SIZE); @@ -2597,7 +2597,7 @@ struct bpf_prog_array *bpf_prog_array_alloc(u32 prog_cnt, gfp_t flags) struct bpf_prog_array *p; if (prog_cnt) - p = kzalloc(struct_size(p, items, prog_cnt + 1), flags); + p = kzalloc_flex(*p, items, prog_cnt + 1, flags); else p = &bpf_empty_prog_array.hdr; |