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Sat, 15 Aug 2026 04:15:59 +0000 X-Migadu-Flow: FLOW_OUT From: Lance Yang To: seohyun.kim@outlook.kr Cc: akpm@linux-foundation.org, david@kernel.org, ljs@kernel.org, riel@surriel.com, liam@infradead.org, vbabka@kernel.org, harry@kernel.org, jannh@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Lance Yang Subject: Re: [PATCH] mm/rmap: synchronize lock and unlock target in anon_vma_clone Date: Sat, 15 Aug 2026 12:15:51 +0800 Message-Id: <20260815041551.84041-1-lance.yang@linux.dev> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: A1F8E100003 X-Stat-Signature: 5dgbsbu3wiw8wnu6fqrj7my7k3mkiybj X-HE-Tag: 1786767361-804493 X-HE-Meta: U2FsdGVkX19Z39oyAfEiNETNtMeYYRnPinge9rqOEUQ7umWTwmucOkuD9mNYlln+7dTzr33ZpDEmoyrqhngv4KJK6Q0Anus90jjhAl0lZXtcel5KePFRPApac6zCUiPvGCdLfrV+rbq7gBaAPgeQ/32EHwVPB3eem7avvCUdsKO9ci1rJriGELJHzqApNpLl0g1ulHkiSLtf1hqKmtz1CgC7jG9KxcJx72s5A406KPcARzD4EDkD95C+g7k0IG3+26f64pTE5Xzn03h+hcwgSQG4D5MWSvD+jXCeCtFOIvK/nCcifwcyBZQgvgL05yTWZ5OR/MN92xtCIgDv+0/qPvm74qbR7Ya1o3IpD5UiRXxbd8CxFowhZc08tInSzFZ7dpE+Ms2rDIf2+OKMPwQYQSCAZP9Pl+9Ul+MCMg4qliE483SRrDYHbTRMQdzA4wTZwdjOIlWA2Z08oLUuijT7X/rUqVrxgRhCdsiVf/bUBr44VpaREN9eIU7L5i4TV/Ab+cgNx0sRvcDlLyddsRnQtXNb5wCgeFVzxqBRHj6jJjjaa4Vw3h3UQsoGWlv1V/a08G4TVIXTSaGo6qFe2/nYBJ2/LjDhntftLN6/ss0M8ebZzgptMWEfL6wz0bxW/beh+Wd+V4orUdtvU/zSTUgodiBGwjX5uwXCNS/xdnfSIeLRQ85L6pOFZ4b2hH4riDKaw4fgJBphCi2vYdvIjqqXCrBmC/OnfO/KzeXQzavhn+YZZM5/pTunicPpIAOuxHOZ3sY52Tc0SnGoAwDeDZQYiN44af1Trva5iU14msQemgtI+0LXUHctNI0YUW1CqP+zue4UfsTUOnnfs7RGRmggX+9BUNswPKRsZz3atYMl/dWNBpidHAqsYgZJVZKTfsGJToKrKF3LyENQ0aRT0GO8SYwtXGUUmP22iMjVSLa7c/ZtEoXgdh9BjtYjG3JzYM+fdEfBlwDdAEgSFmR2WZY 5G/s81fC qzqh59RECmaR3KkdbGaYv286CXN34WFkVIRS1t399LzZYWu2AKECF9WzoTzJ1KiO1f8QmtAuR237dmKIuYZ4PCLvRyUvXelu9k9u2eJzdOuZ4NbPbKC1dS88tXqg29qKwya6wuJWh4mvA57lEGj9xqkRZm2BMyt2NAr5KhwfaeHKYHh9qSu06pUg2SDJULDJz5GeWrzDOWKw4GtYVcAwUlaRHG5CystfB2U6LYrI4FLcSKaKohGN9E28NYX9FAmtANS9LDJSY9+nrijOzq6jko2jmZakY57uoOULV8B0Gl6dwNQfQIZ2TJuTcJzKgc+MFcNh3bciYuiq9FwcJVKua+GoLT7KMeZRMoeYxked8ZHf0Sg4= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Aug 14, 2026 at 03:30:51PM +0900, Eric Kim wrote: >Currently, in anon_vma_clone(), src vma's anon_vma is assigned to >active_anon_vma and is used when unlocking anon_vma after linking new >AVCs. However, the anon_vma is locked using src->anon_vma, instead of >active_anon_vma, making the lock and unlock target inconsistent. > >Use active_anon_vma for both locking and unlocking. > >Signed-off-by: Eric Kim >--- Reviewed-by: Lance Yang