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([122.171.18.84]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82f0c30ee32sm12822124b3a.7.2026.04.13.14.16.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Apr 2026 14:16:09 -0700 (PDT) From: Sunny Patel 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@kvack.org, linux-kernel@vger.kernel.org, Sunny Patel , stable@vger.kernel.org Subject: [PATCH] mm/migrate_device: fix double unlock Date: Tue, 14 Apr 2026 02:45:49 +0530 Message-ID: <20260413211559.20969-1-nueralspacetech@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 de= vice pages") Cc: stable@vger.kernel.org Signed-off-by: Sunny Patel --- 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, un= signed long start, =20 if (softleaf_is_migration(entry)) { softleaf_entry_wait_on_locked(entry, ptl); - spin_unlock(ptl); return -EAGAIN; } =20 --=20 2.43.0