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tz-ppc: add dummy read/write methods

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fix CVE-2020-15469

Add tz-ppc-dummy mmio read/write methods to avoid assert failure
during initialisation.

Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>

Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
This commit is contained in:
Chen Qun 2021-03-25 17:27:07 +08:00
parent 15d7b2a4ea
commit c38364c2b7
1 changed files with 45 additions and 0 deletions
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45
tz-ppc-add-dummy-read-write-methods.patch Normal file
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@ -0,0 +1,45 @@
From 52d1c1a258aef2b8ace50bb202ee7338ed0060f0 Mon Sep 17 00:00:00 2001
From: Prasad J Pandit <pjp@fedoraproject.org>
Date: Thu, 25 Mar 2021 17:27:07 +0800
Subject: [PATCH] tz-ppc: add dummy read/write methods
fix CVE-2020-15469
Add tz-ppc-dummy mmio read/write methods to avoid assert failure
during initialisation.
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Jiajie Li <lijiajie11@huawei.com>
---
hw/misc/tz-ppc.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/hw/misc/tz-ppc.c b/hw/misc/tz-ppc.c
index 2a14a26f29..5b7b883866 100644
--- a/hw/misc/tz-ppc.c
+++ b/hw/misc/tz-ppc.c
@@ -193,7 +193,20 @@ static bool tz_ppc_dummy_accepts(void *opaque, hwaddr addr,
g_assert_not_reached();
}
+static uint64_t tz_ppc_dummy_read(void *opaque, hwaddr addr, unsigned size)
+{
+ g_assert_not_reached();
+}
+
+static void tz_ppc_dummy_write(void *opaque, hwaddr addr,
+ uint64_t data, unsigned size)
+{
+ g_assert_not_reached();
+}
+
static const MemoryRegionOps tz_ppc_dummy_ops = {
+ .read = tz_ppc_dummy_read,
+ .write = tz_ppc_dummy_write,
.valid.accepts = tz_ppc_dummy_accepts,
};
--
2.27.0