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qemu: don't use vm when lock is dropped in qemuDomainGetFSInfo

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Current call to qemuAgentGetFSInfo in qemuDomainGetFSInfo is
unsafe. Domain lock is dropped and we use vm->def. Let's make
def copy to fix that.
This commit is contained in:
Nikolay Shirokovskiy 2016-12-12 12:13:43 +03:00 committed by John Ferlan
parent 3ab9652a86
commit c9a191fc48
1 changed files with 11 additions and 1 deletions
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12
src/qemu/qemu_driver.c
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@ -19784,6 +19784,8 @@ qemuDomainGetFSInfo(virDomainPtr dom,
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuAgentPtr agent;
virCapsPtr caps = NULL;
virDomainDefPtr def = NULL;
int ret = -1;
virCheckFlags(0, ret);
@ -19806,8 +19808,14 @@ qemuDomainGetFSInfo(virDomainPtr dom,
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto endjob;
if (!(def = virDomainDefCopy(vm->def, caps, driver->xmlopt, NULL, false)))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentGetFSInfo(agent, info, vm->def);
ret = qemuAgentGetFSInfo(agent, info, def);
qemuDomainObjExitAgent(vm, agent);
endjob:
@ -19815,6 +19823,8 @@ qemuDomainGetFSInfo(virDomainPtr dom,
cleanup:
virDomainObjEndAPI(&vm);
virDomainDefFree(def);
virObjectUnref(caps);
return ret;
}