diff options
Diffstat (limited to 'kernel/bpf/verifier.c')
| -rw-r--r-- | kernel/bpf/verifier.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index f01477cecf393..531412c5103dc 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -15480,6 +15480,8 @@ static int check_cond_jmp_op(struct bpf_verifier_env *env, if (src_reg->type == PTR_TO_STACK) insn_flags |= INSN_F_SRC_REG_STACK; + if (dst_reg->type == PTR_TO_STACK) + insn_flags |= INSN_F_DST_REG_STACK; } else { if (insn->src_reg != BPF_REG_0) { verbose(env, "BPF_JMP/JMP32 uses reserved fields\n"); @@ -15489,10 +15491,11 @@ static int check_cond_jmp_op(struct bpf_verifier_env *env, memset(src_reg, 0, sizeof(*src_reg)); src_reg->type = SCALAR_VALUE; __mark_reg_known(src_reg, insn->imm); + + if (dst_reg->type == PTR_TO_STACK) + insn_flags |= INSN_F_DST_REG_STACK; } - if (dst_reg->type == PTR_TO_STACK) - insn_flags |= INSN_F_DST_REG_STACK; if (insn_flags) { err = push_insn_history(env, this_branch, insn_flags, 0); if (err) |