31 May
2023
31 May
'23
7:07 a.m.
On Tue, 30 May 2023 19:32:13 +0000, Oliver Upton wrote:
The reference count on page table allocations is increased for every 'counted' PTE (valid or donated) in the table in addition to the initial reference from ->zalloc_page(). kvm_pgtable_stage2_free_removed() fails to drop the last reference on the root of the table walk, meaning we leak memory.
Fix it by dropping the last reference after the free walker returns, at which point all references for 'counted' PTEs have been released.
Applied to fixes, thanks!
[1/1] KVM: arm64: Drop last page ref in kvm_pgtable_stage2_free_removed() commit: f6a27d6dc51b288106adaf053cff9c9b9cc12c4e
Cheers,
M.
--
Without deviation from the norm, progress is not possible.