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qemu: Fix crash in qemuBuildDeviceCommandlineHandleOverrides

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'STREQ' is used to compare the override alias with the device alias.
While the parser ensures that the override alias is non-NULL, the device
alias may be NULL and STREQ doesn't handle that.

Fixes: 38ab5c9ead5
Resolves: https://gitlab.com/libvirt/libvirt/-/issues/321
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2022-06-06 10:10:44 +02:00
parent 8d3a807a4a
commit 95bd137216
1 changed files with 4 additions and 0 deletions
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4
src/qemu/qemu_command.c
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@ -240,6 +240,10 @@ qemuBuildDeviceCommandlineHandleOverrides(virJSONValue *props,
const char *alias = virJSONValueObjectGetString(props, "id");
size_t i;
/* If the device doesn't have an alias we can't override its props */
if (!alias)
return;
for (i = 0; i < nsdef->ndeviceOverride; i++) {
qemuDomainXmlNsDeviceOverride *dev = nsdef->deviceOverride + i;
size_t j;