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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 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 71173140003 X-Stat-Signature: kao6w9apxfhcgy1we3mfdozzi444e5hp X-Rspamd-Server: rspam06 X-HE-Tag: 1776114971-518134 X-HE-Meta: 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 Zk2JlbEe 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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 --- 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