If gfn_to_hva_many() fails, __kvm_gfn_to_hva_cache_init() will return an error. Before it does, it might use nr_pages_avail, which my compiler complained about: virt/kvm/kvm_main.c:2193:13: warning: 'nr_pages_avail' may be used uninitialized in this function [-Wmaybe-uninitialized] start_gfn += nr_pages_avail; Signed-off-by: Barret Rhoden <brho@xxxxxxxxxx> --- virt/kvm/kvm_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index d9aced677ddd..f8249b153d33 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -2172,7 +2172,7 @@ static int __kvm_gfn_to_hva_cache_init(struct kvm_memslots *slots, gfn_t start_gfn = gpa >> PAGE_SHIFT; gfn_t end_gfn = (gpa + len - 1) >> PAGE_SHIFT; gfn_t nr_pages_needed = end_gfn - start_gfn + 1; - gfn_t nr_pages_avail; + gfn_t nr_pages_avail = 0; int r = start_gfn <= end_gfn ? 0 : -EINVAL; ghc->gpa = gpa; -- 2.25.0.rc1.283.g88dfdc4193-goog
