[PATCH] RISC-V: KVM: fix PMU snapshot_set_shmem on 32-bit hosts

Osama Abdelkader osama.abdelkader at gmail.com
Sat Mar 7 15:43:54 PST 2026


When saddr_high != 0 on RV32, the goto out was unconditional, causing
valid 64-bit addresses to be rejected. Only goto out when the address
is invalid (64-bit host with saddr_high != 0).

Fixes: c2f41ddbcdd7 ("RISC-V: KVM: Implement SBI PMU Snapshot feature")
Signed-off-by: Osama Abdelkader <osama.abdelkader at gmail.com>
---
 arch/riscv/kvm/vcpu_pmu.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/kvm/vcpu_pmu.c b/arch/riscv/kvm/vcpu_pmu.c
index 4d8d5e9aa53d..045099ca904b 100644
--- a/arch/riscv/kvm/vcpu_pmu.c
+++ b/arch/riscv/kvm/vcpu_pmu.c
@@ -425,9 +425,10 @@ int kvm_riscv_vcpu_pmu_snapshot_set_shmem(struct kvm_vcpu *vcpu, unsigned long s
 	if (saddr_high != 0) {
 		if (IS_ENABLED(CONFIG_32BIT))
 			saddr |= ((gpa_t)saddr_high << 32);
-		else
+		else {
 			sbiret = SBI_ERR_INVALID_ADDRESS;
-		goto out;
+			goto out;
+		}
 	}
 
 	kvpmu->sdata = kzalloc(snapshot_area_size, GFP_ATOMIC);
-- 
2.43.0




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