From a725bc970e3091499be8be52798c21259f91b2cd Mon Sep 17 00:00:00 2001 From: Bibo Mao Date: Thu, 20 Mar 2025 11:21:58 +0800 Subject: [PATCH] target/loongarch: Clean up virt_cpu_irq_init() error handling 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. virt_cpu_irq_init() is wrong that way: it passes &err to hotplug_handler_plug() twice. If both calls failed, this could trip error_setv()'s assertion. Moreover, if just one fails, the Error object leaks. Fortunately, these calls can't actually fail. Messed up in commit 50ebc3fc47f7 (hw/intc/loongarch_ipi: Notify ipi object when cpu is plugged) and commit 087a23a87c57 (hw/intc/loongarch_extioi: Use cpu plug notification). Clean this up by passing &error_abort instead. Signed-off-by: Bibo Mao Acked-by: Markus Armbruster Message-ID: <20250320032158.1762751-7-maobibo@loongson.cn> Signed-off-by: Markus Armbruster --- hw/loongarch/virt.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 4674bd9163..63477de5e4 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -327,7 +327,6 @@ static void virt_cpu_irq_init(LoongArchVirtMachineState *lvms) MachineClass *mc = MACHINE_GET_CLASS(ms); const CPUArchIdList *possible_cpus; CPUState *cs; - Error *err = NULL; /* cpu nodes */ possible_cpus = mc->possible_cpu_arch_ids(ms); @@ -337,8 +336,10 @@ static void virt_cpu_irq_init(LoongArchVirtMachineState *lvms) continue; } - hotplug_handler_plug(HOTPLUG_HANDLER(lvms->ipi), DEVICE(cs), &err); - hotplug_handler_plug(HOTPLUG_HANDLER(lvms->extioi), DEVICE(cs), &err); + hotplug_handler_plug(HOTPLUG_HANDLER(lvms->ipi), DEVICE(cs), + &error_abort); + hotplug_handler_plug(HOTPLUG_HANDLER(lvms->extioi), DEVICE(cs), + &error_abort); } } -- 2.39.5