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bh=Mu3p5HiJtTPZuGN+bqO+yFOC5Hz9ZieUjpaHjc/iiFw=; b=qRvlLfTZWhWj/LsFq7+IxAeAhAMnr2ncm5Bql6eeEh3qdn1cxGKfjpEJiaXvaGcsF0 oGCFWcABXyIb9MsmF8Ke0c2NtsRU8ny6WMd0nFK6lYlE6c0THYTNmsY3N4O8nbWUJvjz lQY32vYiyY6HAOP+AhyEvUnqdNiOVTVGvu87tA8kDdSfCTbwfsa6S2bDoeCFMLThHsto Xx48YLrosXCbPC/H7aMJq8yb4T1tjORC1S3/vAX+jpRSCnN5Fkc9RUZFutGaFpf4BEeT l5SgD5cX96Ay5pSiHl1J+96ZaeQoMHNDabwF250IKTpzhkyG3VQd57Knfgm3Y/f/TULr OaXA== X-Gm-Message-State: AFqh2kqPpc/na2Ujor0RqvbBj1vfpUMq42SBKRun2xbDivldZbIcGEl8 nSvAad/EA3CZPoWxLacWF4AkK6MdOiM= X-Received: from surenb-desktop.mtv.corp.google.com ([2620:15c:211:200:f7b0:20e8:ce66:f98]) (user=surenb job=sendgmr) by 2002:a81:9148:0:b0:4fd:417b:7b8a with SMTP id i69-20020a819148000000b004fd417b7b8amr2939691ywg.404.1674689760727; Wed, 25 Jan 2023 15:36:00 -0800 (PST) Date: Wed, 25 Jan 2023 15:35:48 -0800 In-Reply-To: <20230125233554.153109-1-surenb@google.com> Mime-Version: 1.0 References: <20230125233554.153109-1-surenb@google.com> X-Mailer: git-send-email 2.39.1.456.gfc5497dd1b-goog Message-ID: <20230125233554.153109-2-surenb@google.com> Subject: [PATCH v3 1/7] kernel/fork: convert vma assignment to a memcpy From: Suren Baghdasaryan To: akpm@linux-foundation.org Cc: michel@lespinasse.org, jglisse@google.com, mhocko@suse.com, vbabka@suse.cz, hannes@cmpxchg.org, mgorman@techsingularity.net, dave@stgolabs.net, willy@infradead.org, liam.howlett@oracle.com, peterz@infradead.org, ldufour@linux.ibm.com, paulmck@kernel.org, mingo@redhat.com, will@kernel.org, luto@kernel.org, songliubraving@fb.com, peterx@redhat.com, david@redhat.com, dhowells@redhat.com, hughd@google.com, bigeasy@linutronix.de, kent.overstreet@linux.dev, punit.agrawal@bytedance.com, lstoakes@gmail.com, peterjung1337@gmail.com, rientjes@google.com, axelrasmussen@google.com, joelaf@google.com, minchan@google.com, jannh@google.com, shakeelb@google.com, tatashin@google.com, edumazet@google.com, gthelen@google.com, gurua@google.com, arjunroy@google.com, soheil@google.com, hughlynch@google.com, leewalsh@google.com, posk@google.com, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, x86@kernel.org, linux-kernel@vger.kernel.org, kernel-team@android.com, surenb@google.com X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756039705692832189?= X-GMAIL-MSGID: =?utf-8?q?1756039705692832189?= Convert vma assignment in vm_area_dup() to a memcpy() to prevent compiler errors when we add a const modifier to vma->vm_flags. Signed-off-by: Suren Baghdasaryan Acked-by: Mel Gorman --- kernel/fork.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/fork.c b/kernel/fork.c index 6683c1b0f460..a531901859d9 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -482,7 +482,7 @@ struct vm_area_struct *vm_area_dup(struct vm_area_struct *orig) * orig->shared.rb may be modified concurrently, but the clone * will be reinitialized. */ - *new = data_race(*orig); + memcpy(new, orig, sizeof(*new)); INIT_LIST_HEAD(&new->anon_vma_chain); dup_anon_vma_name(orig, new); }