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libkvm: fix kvm_walk_pages

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Correct bitmap operations in _kvm_bitmap_next.

Reviewed by:	jhb
MFC after:	2 weeks
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D19183
This commit is contained in:
Bora Özarslan 2021-11-25 14:09:26 -05:00 committed by Ed Maste
parent 4dbc7835cd
commit 08055452cb
1 changed files with 2 additions and 2 deletions
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4
lib/libkvm/kvm_private.c
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@ -792,8 +792,8 @@ _kvm_bitmap_next(struct kvm_bitmap *bm, u_long *idx)
/* Find the next valid idx. */
for (; *idx < first_invalid; (*idx)++) {
unsigned int mask = *idx % CHAR_BIT;
if ((bm->map[*idx * CHAR_BIT] & mask) == 0)
unsigned int mask = 1U << (*idx % CHAR_BIT);
if ((bm->map[*idx / CHAR_BIT] & mask) != 0)
break;
}