> diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
> index da729cbbaeb9..ab082ab9d535 100644
> --- a/kernel/bpf/core.c
> +++ b/kernel/bpf/core.c
> @@ -1663,14 +1663,17 @@ EXPORT_SYMBOL_GPL(__bpf_call_base);
> INSN_3(JMP, JSET, K), \
> INSN_2(JMP, JA), \
> INSN_2(JMP32, JA), \
> + /* Atomic operations. */ \
> + INSN_3(STX, ATOMIC, B), \
> + INSN_3(STX, ATOMIC, H), \
> + INSN_3(STX, ATOMIC, W), \
> + INSN_3(STX, ATOMIC, DW), \
> /* Store instructions. */ \
> /* Register based. */ \
> INSN_3(STX, MEM, B), \
> INSN_3(STX, MEM, H), \
> INSN_3(STX, MEM, W), \
> INSN_3(STX, MEM, DW), \
> - INSN_3(STX, ATOMIC, W), \
> - INSN_3(STX, ATOMIC, DW), \
> /* Immediate based. */ \
> INSN_3(ST, MEM, B), \
> INSN_3(ST, MEM, H), \
> @@ -2169,6 +2172,8 @@ static u64 ___bpf_prog_run(u64 *regs, const struct bpf_insn *insn)
>
> STX_ATOMIC_DW:
> STX_ATOMIC_W:
> + STX_ATOMIC_H:
> + STX_ATOMIC_B:
> switch (IMM) {
> ATOMIC_ALU_OP(BPF_ADD, add)
> ATOMIC_ALU_OP(BPF_AND, and)
STX_ATOMI_[BH] looks wrong.
It will do atomic64_*() ops in wrong size.
BPF_INSN_MAP() applies to bpf_opcode_in_insntable()
and the verifier will allow such new insns.
