David Ballesteros 382e5d514b KVM: Ensure memory attributes xarray nodes are accounted to the caller's memcg ... Explicitly instantiate the memory attributes xarray with XA_FLAGS_ACCOUNT to ensure that all allocations are accounted to the memcg. Frustratingly, memory allocations done in the "fastpath" do not honor the passed in gfp, even for an explicit xa_reserve(). Only the rare, slow path __xas_nomem() honors the original gfp. E.g. xa_reserve(..., GFP_KERNEL_ACCOUNT) | -> ... | -> __xa_cmpxchg_raw() | -> xas_store() <== does not take @gfp | -> xas_create() | -> xas_alloc() The bug was confirmed by observing that a process in a cgroup limited to 256 MiB grew radix_tree_node slab by ~512 MiB while its memory.current stayed near 0. Fixes: 5a475554db ("KVM: Introduce per-page memory attributes") Cc: stable@vger.kernel.org Assisted-by: Claude-Code:claude-opus-5 Signed-off-by: David Ballesteros <davimaba.v@proton.me> Link: https://patch.msgid.link/20260915175335.138547-4-davimaba.v@proton.me [sean: rewrite changelog, tag for stable] Signed-off-by: Sean Christopherson <seanjc@google.com>		2026-09-22 08:36:06 -07:00
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kvm	KVM: Ensure memory attributes xarray nodes are accounted to the caller's memcg	2026-09-22 08:36:06 -07:00
lib	irqbypass: Require producers to pass in Linux IRQ number during registration	2025-06-20 13:52:41 -07:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00