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| author |   Sean Christopherson <sean.j.christopherson@intel.com> | 2020-04-07 23:40:59 -0700 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2020-04-14 10:39:57 -0400 |
| commit | 97daa028f3f621adff2c4f7b15fe0874e5b5bd6c (patch) | |
| tree | 30c1179dba211ba92a3763c21dfbb11ee8aee3d8 /security | |
| parent | KVM: Check validity of resolved slot when searching memslots (diff) | |
| download | linux-dev-97daa028f3f621adff2c4f7b15fe0874e5b5bd6c.tar.xz linux-dev-97daa028f3f621adff2c4f7b15fe0874e5b5bd6c.zip | |
KVM: s390: Return last valid slot if approx index is out-of-bounds
Return the index of the last valid slot from gfn_to_memslot_approx() if
its binary search loop yielded an out-of-bounds index. The index can
be out-of-bounds if the specified gfn is less than the base of the
lowest memslot (which is also the last valid memslot).
Note, the sole caller, kvm_s390_get_cmma(), ensures used_slots is
non-zero.
Fixes: afdad61615cc3 ("KVM: s390: Fix storage attributes migration with memory slots")
Cc: stable@vger.kernel.org # 4.19.x: 0774a964ef56: KVM: Fix out of range accesses to memslots
Cc: stable@vger.kernel.org # 4.19.x
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200408064059.8957-3-sean.j.christopherson@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions