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([2a02:908:1b6:8980:4f8c:d716:5699:930b]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-45da0fe222bsm6575063f8f.27.2026.05.14.10.36.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 May 2026 10:36:54 -0700 (PDT) From: Osama Abdelkader To: Anup Patel , Atish Patra , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Osama Abdelkader , stable@vger.kernel.org Subject: [PATCH 2/2] riscv: kvm: return SBI_ERR_FAILURE for pmu_event_info OOM Date: Thu, 14 May 2026 19:36:41 +0200 Message-ID: <20260514173642.41448-2-osama.abdelkader@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260514173642.41448-1-osama.abdelkader@gmail.com> References: <20260514173642.41448-1-osama.abdelkader@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit kvm_riscv_vcpu_pmu_event_info() returned -ENOMEM from the SBI extension handler, which caused kvm_riscv_vcpu_sbi_ecall() to abort KVM_RUN and surface the error to userspace instead of completing the ECALL with a negative SBI error in a0. Use SBI_ERR_FAILURE and the normal retdata path, matching other PMU handlers and kvm_sbi_ext_pmu_handler comment. Fixes: e309fd113b9f ("RISC-V: KVM: Implement get event info function") Cc: stable@vger.kernel.org Signed-off-by: Osama Abdelkader --- arch/riscv/kvm/vcpu_pmu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/riscv/kvm/vcpu_pmu.c b/arch/riscv/kvm/vcpu_pmu.c index 91aa0155a420..bb46dcbfb24d 100644 --- a/arch/riscv/kvm/vcpu_pmu.c +++ b/arch/riscv/kvm/vcpu_pmu.c @@ -501,8 +501,10 @@ int kvm_riscv_vcpu_pmu_event_info(struct kvm_vcpu *vcpu, unsigned long saddr_low } einfo = kzalloc(shmem_size, GFP_KERNEL); - if (!einfo) - return -ENOMEM; + if (!einfo) { + ret = SBI_ERR_FAILURE; + goto out; + } ret = kvm_vcpu_read_guest(vcpu, shmem, einfo, shmem_size); if (ret) { -- 2.43.0