cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
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commit 3b6a2b6b7466f6dea53243900b7516c3f29027b7
parent ffa95097ee9937a799c965201381a28e0860339c
Author: Carlos Bilbao <carlos.bilbao@amd.com>
Date:   Fri, 28 Oct 2022 09:07:13 -0500

i386/sev: Fix segfault retrieving SEV capabilities

Return from sev_get_capabilities when sev_common is not on. This fixes
a segmentation fault when retrieving SEV capabilities, for example with
libvirt.

Signed-off-by: Alexey Kardashevskiy <Alexey.Kardashevskiy@amd.com>
Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com>

Diffstat:

Mtarget/i386/sev.c | 1+


1 file changed, 1 insertion(+), 0 deletions(-)

diff --git a/target/i386/sev.c b/target/i386/sev.c
@@ -838,6 +838,7 @@ sev_get_capabilities(Error **errp)
     sev_common = SEV_COMMON(MACHINE(qdev_get_machine())->cgs);
     if (!sev_common) {
         error_setg(errp, "SEV is not configured");
+        return NULL;
     }
 
     sev_device = object_property_get_str(OBJECT(sev_common), "sev-device",