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[Qemu-arm] [PATCH] target-arm: fix a segmentation fault due to illegal m
From: |
Zheng Xiang |
Subject: |
[Qemu-arm] [PATCH] target-arm: fix a segmentation fault due to illegal memory access |
Date: |
Tue, 19 Jun 2018 15:58:21 +0800 |
From: Zheng Xiang <address@hidden>
The elements of kvm_devices_head list are freed in kvm_arm_machine_init_done(),
but we still access these illegal memory in kvm_arm_devlistener_del().
This will cause segment fault when booting guest with MALLOC_PERTURB_=1.
Signed-off-by: Zheng Xiang <address@hidden>
---
target/arm/kvm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index 98f5006..5bf41e1 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -256,6 +256,7 @@ static void kvm_arm_machine_init_done(Notifier *notifier,
void *data)
kvm_arm_set_device_addr(kd);
}
memory_region_unref(kd->mr);
+ QSLIST_REMOVE_HEAD(&kvm_devices_head, entries);
g_free(kd);
}
memory_listener_unregister(&devlistener);
--
1.8.3.1
- [Qemu-arm] [PATCH] target-arm: fix a segmentation fault due to illegal memory access,
Zheng Xiang <=