diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-15 15:20:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-15 15:20:53 +0100 |
| commit | bdfe0df1e97beedc15f68ee6556830548e81f63f (patch) | |
| tree | ed4f0eb7acb8814642eb1fb4da0ac28704dc4fe0 /virt/kvm/kvm_main.c | |
| parent | a4723041857eaa35f189d237da769c4c63235544 (diff) | |
| parent | 1c7fc5cbc33980acd13d668f1c8f0313d6ae9fd8 (diff) | |
Merge 5.0-rc2 into driver-core-next
We want the driver core changes in that branch in here to build on top
of.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt/kvm/kvm_main.c')
| -rw-r--r-- | virt/kvm/kvm_main.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 1f888a103f78..5ecea812cb6a 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -1227,9 +1227,9 @@ int kvm_clear_dirty_log_protect(struct kvm *kvm, { struct kvm_memslots *slots; struct kvm_memory_slot *memslot; - int as_id, id, n; + int as_id, id; gfn_t offset; - unsigned long i; + unsigned long i, n; unsigned long *dirty_bitmap; unsigned long *dirty_bitmap_buffer; @@ -1249,6 +1249,11 @@ int kvm_clear_dirty_log_protect(struct kvm *kvm, return -ENOENT; n = kvm_dirty_bitmap_bytes(memslot); + + if (log->first_page > memslot->npages || + log->num_pages > memslot->npages - log->first_page) + return -EINVAL; + *flush = false; dirty_bitmap_buffer = kvm_second_dirty_bitmap(memslot); if (copy_from_user(dirty_bitmap_buffer, log->dirty_bitmap, n)) |