* [PATCH] mm/migrate_device: fix double unlock
@ 2026-04-13 21:15 Sunny Patel
0 siblings, 0 replies; only message in thread
From: Sunny Patel @ 2026-04-13 21:15 UTC (permalink / raw)
To: Andrew Morton
Cc: David Hildenbrand, Zi Yan, Matthew Brost, Joshua Hahn, Rakie Kim,
Byungchul Park, Gregory Price, Ying Huang, Alistair Popple,
Balbir Singh, linux-mm, linux-kernel, Sunny Patel, stable
migrate_vma_collect_huge_pmd() calls spin_unlock(ptl) after
softleaf_entry_wait_on_locked(), which already releases the ptl.
Fixes: a30b48bf1b24 ("mm/migrate_device: implement THP migration of zone device pages")
Cc: stable@vger.kernel.org
Signed-off-by: Sunny Patel <nueralspacetech@gmail.com>
---
mm/migrate_device.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/mm/migrate_device.c b/mm/migrate_device.c
index 8079676c8f1f..7eb2f87ea39d 100644
--- a/mm/migrate_device.c
+++ b/mm/migrate_device.c
@@ -177,7 +177,6 @@ static int migrate_vma_collect_huge_pmd(pmd_t *pmdp, unsigned long start,
if (softleaf_is_migration(entry)) {
softleaf_entry_wait_on_locked(entry, ptl);
- spin_unlock(ptl);
return -EAGAIN;
}
--
2.43.0
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