From 49e2fa85ff04a9be89ed15f922c7d8dae2be9e74 Mon Sep 17 00:00:00 2001 From: Markus Armbruster Date: Tue, 5 May 2020 12:19:08 +0200 Subject: [PATCH] i386: Fix x86_cpu_load_model() error API violation The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. x86_cpu_load_model() is wrong that way. Harmless, because its @errp is always &error_abort. To fix, cut out the @errp middleman. Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Signed-off-by: Markus Armbruster Message-Id: <20200505101908.6207-11-armbru@redhat.com> --- target/i386/cpu.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 7a4a8e3847..3733d9a279 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -5078,7 +5078,7 @@ static void x86_cpu_apply_version_props(X86CPU *cpu, X86CPUModel *model) /* Load data from X86CPUDefinition into a X86CPU object */ -static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model, Error **errp) +static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model) { X86CPUDefinition *def = model->cpudef; CPUX86State *env = &cpu->env; @@ -5092,13 +5092,19 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model, Error **errp) */ /* CPU models only set _minimum_ values for level/xlevel: */ - object_property_set_uint(OBJECT(cpu), def->level, "min-level", errp); - object_property_set_uint(OBJECT(cpu), def->xlevel, "min-xlevel", errp); + object_property_set_uint(OBJECT(cpu), def->level, "min-level", + &error_abort); + object_property_set_uint(OBJECT(cpu), def->xlevel, "min-xlevel", + &error_abort); - object_property_set_int(OBJECT(cpu), def->family, "family", errp); - object_property_set_int(OBJECT(cpu), def->model, "model", errp); - object_property_set_int(OBJECT(cpu), def->stepping, "stepping", errp); - object_property_set_str(OBJECT(cpu), def->model_id, "model-id", errp); + object_property_set_int(OBJECT(cpu), def->family, "family", + &error_abort); + object_property_set_int(OBJECT(cpu), def->model, "model", + &error_abort); + object_property_set_int(OBJECT(cpu), def->stepping, "stepping", + &error_abort); + object_property_set_str(OBJECT(cpu), def->model_id, "model-id", + &error_abort); for (w = 0; w < FEATURE_WORDS; w++) { env->features[w] = def->features[w]; } @@ -5135,7 +5141,8 @@ static void x86_cpu_load_model(X86CPU *cpu, X86CPUModel *model, Error **errp) vendor = host_vendor; } - object_property_set_str(OBJECT(cpu), vendor, "vendor", errp); + object_property_set_str(OBJECT(cpu), vendor, "vendor", + &error_abort); x86_cpu_apply_version_props(cpu, model); } @@ -6975,7 +6982,7 @@ static void x86_cpu_initfn(Object *obj) object_property_add_alias(obj, "sse4_2", obj, "sse4.2"); if (xcc->model) { - x86_cpu_load_model(cpu, xcc->model, &error_abort); + x86_cpu_load_model(cpu, xcc->model); } }