Change Details

blist_meta_alloc assumes that mask=scan->bm_bitmap is nonzero. But if the cursor lies in the middle of the space that the meta node represents, then blanking the low bits of mask may make it zero, and break later code that expects a nonzero value. Change the loop test to account for a zero-valued mask on the first loop iteration.

blist_meta_alloc assumes that mask=scan->bm_bitmap is nonzero. But if the cursor lies in the middle of the space that the meta node represents, then blanking the low bits of mask may make it zero, and break later code that expects a nonzero value. Add a test that returns failure if the mask has been cleared.

blist_meta_alloc assumes that mask=scan->bm_bitmap is nonzero. But if the cursor lies in the middle of the space that the meta node represents, then blanking the low bits of mask may make it zero, and break later code that expects a nonzero value. Change the loopAdd a test to account for a zero-valuedhat returns failure if the mask on the first loop iterationhas been cleared.