linux-kernel - [PATCH AUTOSEL for 4.15 008/102] KVM: PPC: Book3S HV: Fix typo in kvmppc_hv_get_dirty_log

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Message-ID: <20180303222318.26006-8-alexander.levin@microsoft.com>
Date:   Sat, 3 Mar 2018 22:24:13 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
CC:     Paul Mackerras <paulus@...abs.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.15 008/102] KVM: PPC: Book3S HV: Fix typo in
 kvmppc_hv_get_dirty_log_radix()

From: Paul Mackerras <paulus@...abs.org>

[ Upstream commit 117647ff936e2d9684cc881d87c0291f46669c20 ]

This fixes a typo where the intent was to assign to 'j' in order to
skip some number of bits in the dirty bitmap for a guest.  The effect
of the typo is benign since it means we just iterate through all the
bits rather than skipping bits which we know will be zero.  This issue
was found by Coverity.

Signed-off-by: Paul Mackerras <paulus@...abs.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 arch/powerpc/kvm/book3s_64_mmu_radix.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kvm/book3s_64_mmu_radix.c b/arch/powerpc/kvm/book3s_64_mmu_radix.c
index 58618f644c56..0c854816e653 100644
--- a/arch/powerpc/kvm/book3s_64_mmu_radix.c
+++ b/arch/powerpc/kvm/book3s_64_mmu_radix.c
@@ -573,7 +573,7 @@ long kvmppc_hv_get_dirty_log_radix(struct kvm *kvm,
 		j = i + 1;
 		if (npages) {
 			set_dirty_bits(map, i, npages);
-			i = j + npages;
+			j = i + npages;
 		}
 	}
 	return 0;
-- 
2.14.1