armbian/linux-rockchip
0
0
Fork 0
mirror of https://github.com/armbian/linux-rockchip.git synced 2026-01-06 11:08:10 -08:00
Code Issues Packages Projects Releases Wiki Activity

KVM: VMX: Unregister posted interrupt wakeup handler on hardware unsetup

Browse Source 
commit ec5a4919fa upstream.

Unregister KVM's posted interrupt wakeup handler during unsetup so that a
spurious interrupt that arrives after kvm_intel.ko is unloaded doesn't
call into freed memory.

Fixes: bf9f6ac8d7 ("KVM: Update Posted-Interrupts Descriptor when vCPU is blocked")
Cc: stable@vger.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211009001107.3936588-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sean Christopherson
2021-10-08 17:11:05 -07:00
committed by Greg Kroah-Hartman
parent b4a4c9dc44
commit 2f65b76c44
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
arch/x86/kvm/vmx/vmx.c
View File

@@ -7586,6 +7586,8 @@ static void vmx_migrate_timers(struct kvm_vcpu *vcpu)
static void hardware_unsetup(void)
{
kvm_set_posted_intr_wakeup_handler(NULL);
if (nested)
nested_vmx_hardware_unsetup();
@@ -7877,8 +7879,6 @@ static __init int hardware_setup(void)
vmx_x86_ops.request_immediate_exit = __kvm_request_immediate_exit;
}
kvm_set_posted_intr_wakeup_handler(pi_wakeup_handler);
kvm_mce_cap_supported |= MCG_LMCE_P;
if (pt_mode != PT_MODE_SYSTEM && pt_mode != PT_MODE_HOST_GUEST)
@@ -7900,6 +7900,9 @@ static __init int hardware_setup(void)
r = alloc_kvm_area();
if (r)
nested_vmx_hardware_unsetup();
kvm_set_posted_intr_wakeup_handler(pi_wakeup_handler);
return r;
}