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KVM: arm64: Use kmemleak_free_part_phys() to unregister hyp_mem_base

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With commit 0c24e06119 ("mm: kmemleak: add rbtree and store physical
address for objects allocated with PA"), kmemleak started to put the
objects allocated with physical address onto object_phys_tree_root tree.
The kmemleak_free_part() therefore no longer worked as expected on
physically allocated objects (hyp_mem_base in this case) as it attempted to
search and remove things in object_tree_root tree.

Fix it by using kmemleak_free_part_phys() to unregister hyp_mem_base. This
fixes an immediate crash when booting a KVM host in protected mode with
kmemleak enabled.

Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220908130659.2021-1-yuzenghui@huawei.com
This commit is contained in:
Zenghui Yu 2022-09-08 21:06:59 +08:00 committed by Marc Zyngier
parent 1c23f9e627
commit 522c9a64c7
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kvm/arm.c
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@ -2114,7 +2114,7 @@ static int finalize_hyp_mode(void)
* at, which would end badly once inaccessible.
*/
kmemleak_free_part(__hyp_bss_start, __hyp_bss_end - __hyp_bss_start);
kmemleak_free_part(__va(hyp_mem_base), hyp_mem_size);
kmemleak_free_part_phys(hyp_mem_base, hyp_mem_size);
return pkvm_drop_host_privileges();
}