[Xen-changelog] [xen master] x86/msr: Free msr_vcpu_policy during vcpu destruction

[patchbot@xxxxxxx]

commit e204e60f77702bf5c884dd37c3f1b01f14e396ae
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Thu Jan 4 14:27:38 2018 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Jan 4 14:27:38 2018 +0100

    x86/msr: Free msr_vcpu_policy during vcpu destruction
    
    c/s 4187f79dc7 "x86/msr: introduce struct msr_vcpu_policy" introduced a
    per-vcpu memory allocation, but failed to free it in the clean vcpu
    destruction case.
    
    This is XSA-253.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/arch/x86/domain.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index b17468c..0ae715d 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -382,6 +382,9 @@ void vcpu_destroy(struct vcpu *v)
 
     vcpu_destroy_fpu(v);
 
+    xfree(v->arch.msr);
+    v->arch.msr = NULL;
+
     if ( !is_idle_domain(v->domain) )
         vpmu_destroy(v);
 
--
generated by git-patchbot for /home/xen/git/xen.git#master

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