renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 12:14:01 +08:00
Code

KVM: MMU: Fix another largepage memory leak

Browse Source 
In the paging_fetch function rmap_remove is called after setting a large
pte to non-present. This causes rmap_remove to not drop the reference to
the large page. The result is a memory leak of that page.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel 2009-02-19 12:18:56 +01:00 committed by Avi Kivity
parent 1fbdc7a585
commit c5bc224240
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/kvm/paging_tmpl.h
View File

@ -306,9 +306,9 @@ static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr,
continue; continue;
if (is_large_pte(*sptep)) { if (is_large_pte(*sptep)) {
rmap_remove(vcpu->kvm, sptep);
set_shadow_pte(sptep, shadow_trap_nonpresent_pte); set_shadow_pte(sptep, shadow_trap_nonpresent_pte);
kvm_flush_remote_tlbs(vcpu->kvm); kvm_flush_remote_tlbs(vcpu->kvm);
rmap_remove(vcpu->kvm, sptep);
} }
if (level == PT_DIRECTORY_LEVEL if (level == PT_DIRECTORY_LEVEL