From: Akinobu Mita Date: Tue, 9 Dec 2025 15:10:34 +0000 (+0900) Subject: mm/damon/vaddr: fix missing pte_unmap_unlock in damos_va_migrate_pmd_entry() X-Git-Tag: v6.19-rc4~22^2~16 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=02129e623c18ad77ebb85210340f72125ae8a7a1;p=thirdparty%2Flinux.git mm/damon/vaddr: fix missing pte_unmap_unlock in damos_va_migrate_pmd_entry() If the PTE page table lock is acquired by pte_offset_map_lock(), the lock must be released via pte_unmap_unlock(). However, in damos_va_migrate_pmd_entry(), if damos_va_filter_out() returns true, it immediately returns without releasing the lock. This fixes the issue by not stopping page table traversal when damos_va_filter_out() returns true and ensuring that the lock is released. Link: https://lkml.kernel.org/r/20251209151034.77221-1-akinobu.mita@gmail.com Fixes: 09efc56a3b1c ("mm/damon/vaddr: consistently use only pmd_entry for damos_migrate") Signed-off-by: Akinobu Mita Reviewed-by: SeongJae Park Signed-off-by: Andrew Morton --- diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c index 2750c88e7225..23ed738a0bd6 100644 --- a/mm/damon/vaddr.c +++ b/mm/damon/vaddr.c @@ -743,7 +743,7 @@ huge_out: if (!folio) continue; if (damos_va_filter_out(s, folio, walk->vma, addr, pte, NULL)) - return 0; + continue; damos_va_migrate_dests_add(folio, walk->vma, addr, dests, migration_lists); nr = folio_nr_pages(folio);