Re: [RFC PATCH v1 01/37] KVM: guest_memfd: Introduce per-gmem attributes, use to guard user mappings
From: Ackerley Tng <hidden>
Date: 2026-01-28 17:50:48
Also in:
cgroups, kvm, linux-doc, linux-fsdevel, linux-kselftest, linux-mm, lkml
Yan Zhao [off-list ref] writes:
[...snip...] So, it's possible for kvm_mem_is_private() to access invalid mtree data and hit the WARN_ON_ONCE() in kvm_gmem_get_attributes(). I reported a similar error in [*]. [*] https://lore.kernel.org/all/aIwD5kGbMibV7ksk@yzhao56-desk.sh.intel.com (local)
Will add locking in the next revision. Thanks!