Re: [PATCH v3] arm64: Restrict pagetable teardown to avoid false warning

On Tue, 27 May 2025 13:56:33 +0530, Dev Jain wrote:

Commit 9c006972c3fe removes the pxd_present() checks because the caller checks pxd_present(). But, in case of vmap_try_huge_pud(), the caller only checks pud_present(); pud_free_pmd_page() recurses on each pmd through pmd_free_pte_page(), wherein the pmd may be none. Thus it is possible to hit a warning in the latter, since pmd_none => !pmd_table(). Thus, add a pmd_present() check in pud_free_pmd_page().

[...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: Restrict pagetable teardown to avoid false warning https://git.kernel.org/arm64/c/650768c512fa

Cheers,