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LoongArch: KVM: Free init resources if kvm_init() fails

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kvm_loongarch_init() calls kvm_loongarch_env_init() to allocate the
per-CPU kvm_context (vmcs) and kvm_loongarch_ops and to register the
perf callbacks, and then calls kvm_init(). If kvm_init() fails its
result is returned directly, but since module_init() does not run the
module_exit() stuff on failure, so kvm_loongarch_env_exit() is never
called and those resources are leaked.

So call kvm_loongarch_env_exit() when kvm_init() fails, matching the
teardown-on-failure pattern used by riscv_kvm_init().

Cc: stable@vger.kernel.org
Fixes: 2bd6ac6872 ("LoongArch: KVM: Implement kvm module related interface")
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
Signed-off-by: Chaithanya Lagisetty <nagachaithanya9911@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
This commit is contained in:
Chaithanya Lagisetty 2026-09-04 21:44:53 +08:00 committed by Huacai Chen
parent 30419a0aa1
commit f7a1064cce
1 changed files with 5 additions and 1 deletions
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6
arch/loongarch/kvm/main.c
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@ -428,7 +428,11 @@ static int kvm_loongarch_init(void)
if (r)
return r;
return kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE);
r = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE);
if (r)
kvm_loongarch_env_exit();
return r;
}
static void kvm_loongarch_exit(void)