From: David Miller <[email protected]>
Date: Mon, 01 May 2017 23:02:34 -0400 (EDT)
> for (i = 0; i < prog->len; i++) {
> const struct bpf_insn *insn = &prog->insnsi[i];
> int ret;
>
> ret = build_insn(insn, ctx);
> ctx->offset[i] = ctx->idx;
>
> if (ret > 0) {
> i++;
> continue;
> }
> if (ret)
> return ret;
> }
Ok, the fix is to defer the ctx->offset[i] setting until after the
potential extra "i++" increment inside of the "if (ret > 0)" test.
This is how x86_64's JIT handles this.
I'm testing this fix on sparc64 now.
