diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2025-12-10 00:10:34 +0900 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-12-23 11:23:13 -0800 |
| commit | 02129e623c18ad77ebb85210340f72125ae8a7a1 (patch) | |
| tree | d783c17ba617fdc54ee9b5aac6c56bcb38ec27d8 | |
| parent | 612b595e08caffc1276e7b0680a0c95951eba185 (diff) | |
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 <akinobu.mita@gmail.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | mm/damon/vaddr.c | 2 |
1 files changed, 1 insertions, 1 deletions
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); |