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Tue, 7 Apr 2020 17:51:09 +0800 From: Miles Chen To: Andrew Morton CC: , , , , Miles Chen Subject: [PATCH] mm/gup: fix null pointer dereference detected by coverity Date: Tue, 7 Apr 2020 17:51:07 +0800 Message-ID: <20200407095107.1988-1-miles.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Content-Type: text/plain X-TM-SNTS-SMTP: F11F2E2A2FF92E73BAB9EDC1B554CE3E5CCB1D0ABAD6F0EF683C94EC7DB3A3AF2000:8 X-MTK: N Content-Transfer-Encoding: base64 X-Bogosity: Ham, tests=bogofilter, spamicity=0.001541, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: SW4gZml4dXBfdXNlcl9mYXVsdCgpLCBpdCBpcyBwb3NzaWJsZSB0aGF0IHVubG9ja2VkIGlzIE5V TEwsDQpzbyB3ZSBzaG91bGQgdGVzdCB1bmxvY2tlZCBiZWZvcmUgdXNpbmcgaXQuDQoNCkZvciBl eGFtcGxlLCBpbiBhcmNoL2FyYy9rZXJuZWwvcHJvY2Vzcy5jLCBOVUxMIGlzIHBhc3NlZA0KdG8g Zml4dXBfdXNlcl9mYXVsdCgpLg0KDQpTWVNDQUxMX0RFRklORTMoYXJjX3Vzcl9jbXB4Y2hnLCBp bnQgKiwgdWFkZHIsIGludCwgZXhwZWN0ZWQsIGludCwgbmV3KQ0Kew0KLi4uDQoJcmV0ID0gZml4 dXBfdXNlcl9mYXVsdChjdXJyZW50LCBjdXJyZW50LT5tbSwgKHVuc2lnbmVkIGxvbmcpIHVhZGRy LA0KCQkJICAgICAgIEZBVUxUX0ZMQUdfV1JJVEUsIE5VTEwpOw0KLi4uDQp9DQoNCkZpeGVzOiA0 YTllMWNkYTI3NDggKCJtbTogYnJpbmcgaW4gYWRkaXRpb25hbCBmbGFnIGZvciBmaXh1cF91c2Vy X2ZhdWx0IHRvIHNpZ25hbCB1bmxvY2siKQ0KU2lnbmVkLW9mZi1ieTogTWlsZXMgQ2hlbiA8bWls ZXMuY2hlbkBtZWRpYXRlay5jb20+DQotLS0NCiBtbS9ndXAuYyB8IDMgKystDQogMSBmaWxlIGNo YW5nZWQsIDIgaW5zZXJ0aW9ucygrKSwgMSBkZWxldGlvbigtKQ0KDQpkaWZmIC0tZ2l0IGEvbW0v Z3VwLmMgYi9tbS9ndXAuYw0KaW5kZXggZGEzZTAzMTg1MTQ0Li5hNjhkMTFkYzIzMmQgMTAwNjQ0 DQotLS0gYS9tbS9ndXAuYw0KKysrIGIvbW0vZ3VwLmMNCkBAIC0xMjMwLDcgKzEyMzAsOCBAQCBp bnQgZml4dXBfdXNlcl9mYXVsdChzdHJ1Y3QgdGFza19zdHJ1Y3QgKnRzaywgc3RydWN0IG1tX3N0 cnVjdCAqbW0sDQogCWlmIChyZXQgJiBWTV9GQVVMVF9SRVRSWSkgew0KIAkJZG93bl9yZWFkKCZt bS0+bW1hcF9zZW0pOw0KIAkJaWYgKCEoZmF1bHRfZmxhZ3MgJiBGQVVMVF9GTEFHX1RSSUVEKSkg ew0KLQkJCSp1bmxvY2tlZCA9IHRydWU7DQorCQkJaWYgKHVubG9ja2VkKQ0KKwkJCQkqdW5sb2Nr ZWQgPSB0cnVlOw0KIAkJCWZhdWx0X2ZsYWdzIHw9IEZBVUxUX0ZMQUdfVFJJRUQ7DQogCQkJZ290 byByZXRyeTsNCiAJCX0NCi0tIA0KMi4xOC4wDQo=