Subject KVM: unbounded per-VM kernel memory growth via KVM_SET_MEMORY_ATTRIBUTES
Author davimaba.v@proton.me
Date 2026-09-11 18:48:35 +0000 UTC
Version
Cc davimaba.v@proton.me kvm@vger.kernel.org pbonzini@redhat.com security@kernel.org
Patches (2)
Name Content [All]
[PATCH 1/2] KVM: Bound per-VM GFN materialization in KVM_SET_MEMORY_ATTRIBUTES [Body]
[PATCH 2/2] KVM: Account mem_attr_array nodes to the caller's memcg [Body]
Series Summary
1 Findings
finding WARNING: suspicious RCU usage in kvm_vm_ioctl_set_mem_attributes
Log Syz Repro
Sessions
Session 2026-09-11
1 Findings
ID (for dev) 060cdc24-3bd1-4bad-b278-d40907bae9fe
Status finished
Triaged OK [Log] [Trajectory]
Execution Log [Link]
Test Base Patched Verdict
[KASAN] Build Base d4b7fb647204f0c81dfeae2d1a708e4d858e0c94 [Config] passed [Log]
[KASAN] Boot test: Base d4b7fb647204f0c81dfeae2d1a708e4d858e0c94 [Config] passed [Log]
[KASAN] Build Patched d4b7fb647204f0c81dfeae2d1a708e4d858e0c94 [Config] [patched] passed [Log]
[KASAN] Boot test: Patched d4b7fb647204f0c81dfeae2d1a708e4d858e0c94 [Config] [patched] passed [Log]
[KASAN] Fuzz d4b7fb647204f0c81dfeae2d1a708e4d858e0c94 [Config] d4b7fb647204f0c81dfeae2d1a708e4d858e0c94 [Config] [patched] passed [Log] [Artifacts]
finding WARNING: suspicious RCU usage in kvm_vm_ioctl_set_mem_attributes
Log Syz Repro