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bpf: log PTR_TO_MEM memory size in verifier log
Emit valid memory size addressable through PTR_TO_MEM register. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Eduard Zingerman <eddyz87@gmail.com> Link: https://lore.kernel.org/r/20231204233931.49758-2-andrii@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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@ -682,6 +682,10 @@ static void print_reg_state(struct bpf_verifier_env *env,
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verbose_a("r=");
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verbose_unum(env, reg->range);
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}
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if (base_type(t) == PTR_TO_MEM) {
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verbose_a("sz=");
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verbose_unum(env, reg->mem_size);
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}
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if (tnum_is_const(reg->var_off)) {
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/* a pointer register with fixed offset */
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if (reg->var_off.value) {
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