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Thu, 30 Jan 2020 14:44:31 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 30 Jan 2020 14:43:35 +0800 From: Walter Wu To: Dmitry Vyukov , Matthias Brugger , Thomas Gleixner , Alexander Potapenko , Josh Poimboeuf , Greg Kroah-Hartman , Kate Stewart CC: , , , wsd_upstream , Walter Wu Subject: [PATCH v3] lib/stackdepot: Fix global out-of-bounds in stackdepot Date: Thu, 30 Jan 2020 14:44:30 +0800 Message-ID: <20200130064430.17198-1-walter-zh.wu@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 Content-Type: text/plain X-MTK: N Content-Transfer-Encoding: base64 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org SWYgdGhlIGRlcG90X2luZGV4ID0gU1RBQ0tfQUxMT0NfTUFYX1NMQUJTIC0gMiBhbmQgbmV4dF9z bGFiX2luaXRlZCA9IDAsDQp0aGVuIGl0IHdpbGwgY2F1c2UgYXJyYXkgb3V0LW9mLWJvdW5kcyBh Y2Nlc3MsIHNvIHRoYXQgd2Ugc2hvdWxkIG1vZGlmeQ0KdGhlIGRldGVjdGlvbiB0byBhdm9pZCB0 aGlzIGFycmF5IG91dC1vZi1ib3VuZHMgYnVnLg0KDQpBc3N1bWUgZGVwb3RfaW5kZXggPSBTVEFD S19BTExPQ19NQVhfU0xBQlMgLSAzDQpDb25zaWRlciBmb2xsb3dpbmcgY2FsbCBmbG93IHNlcXVl bmNlOg0KDQpzdGFja19kZXBvdF9zYXZlKCkNCiAgIGRlcG90X2FsbG9jX3N0YWNrKCkNCiAgICAg IGlmICh1bmxpa2VseShkZXBvdF9pbmRleCArIDEgPj0gU1RBQ0tfQUxMT0NfTUFYX1NMQUJTKSkg Ly9wYXNzDQogICAgICBkZXBvdF9pbmRleCsrICAvL2RlcG90X2luZGV4ID0gU1RBQ0tfQUxMT0Nf TUFYX1NMQUJTIC0gMg0KICAgICAgaWYgKGRlcG90X2luZGV4ICsgMSA8IFNUQUNLX0FMTE9DX01B WF9TTEFCUykgLy9lbnRlcg0KICAgICAgICAgc21wX3N0b3JlX3JlbGVhc2UoJm5leHRfc2xhYl9p bml0ZWQsIDApOyAvL25leHRfc2xhYl9pbml0ZWQgPSAwDQogICAgICBpbml0X3N0YWNrX3NsYWIo KQ0KICAgICAgICAgaWYgKHN0YWNrX3NsYWJzW2RlcG90X2luZGV4XSA9PSBOVUxMKSAvL2VudGVy IGFuZCBleGl0DQoNCnN0YWNrX2RlcG90X3NhdmUoKQ0KICAgZGVwb3RfYWxsb2Nfc3RhY2soKQ0K ICAgICAgaWYgKHVubGlrZWx5KGRlcG90X2luZGV4ICsgMSA+PSBTVEFDS19BTExPQ19NQVhfU0xB QlMpKSAvL3Bhc3MNCiAgICAgIGRlcG90X2luZGV4KysgIC8vZGVwb3RfaW5kZXggPSBTVEFDS19B TExPQ19NQVhfU0xBQlMgLSAxDQogICAgICBpbml0X3N0YWNrX3NsYWIoJnByZWFsbG9jKQ0KICAg ICAgICAgc3RhY2tfc2xhYnNbZGVwb3RfaW5kZXggKyAxXSAgLy9oZXJlIGdldCBnbG9iYWwgb3V0 LW9mLWJvdW5kcw0KDQpDYzogRG1pdHJ5IFZ5dWtvdiA8ZHZ5dWtvdkBnb29nbGUuY29tPg0KQ2M6 IE1hdHRoaWFzIEJydWdnZXIgPG1hdHRoaWFzLmJnZ0BnbWFpbC5jb20+DQpDYzogVGhvbWFzIEds ZWl4bmVyIDx0Z2x4QGxpbnV0cm9uaXguZGU+DQpDYzogQWxleGFuZGVyIFBvdGFwZW5rbyA8Z2xp ZGVyQGdvb2dsZS5jb20+DQpDYzogSm9zaCBQb2ltYm9ldWYgPGpwb2ltYm9lQHJlZGhhdC5jb20+ DQpDYzogS2F0ZSBTdGV3YXJ0IDxrc3Rld2FydEBsaW51eGZvdW5kYXRpb24ub3JnPg0KQ2M6IEdy ZWcgS3JvYWgtSGFydG1hbiA8Z3JlZ2toQGxpbnV4Zm91bmRhdGlvbi5vcmc+DQpDYzogS2F0ZSBT dGV3YXJ0IDxrc3Rld2FydEBsaW51eGZvdW5kYXRpb24ub3JnPg0KU2lnbmVkLW9mZi1ieTogV2Fs dGVyIFd1IDx3YWx0ZXItemgud3VAbWVkaWF0ZWsuY29tPg0KLS0tDQpjaGFuZ2VzIGluIHYyOg0K bW9kaWZ5IGNhbGwgZmxvdyBzZXF1ZW5jZSBhbmQgcHJlY29uZGl0b24NCg0KY2hhbmdlcyBpbiB2 MzoNCmFkZCBzb21lIHJldmlld2Vycw0KLS0tDQogbGliL3N0YWNrZGVwb3QuYyB8IDIgKy0NCiAx IGZpbGUgY2hhbmdlZCwgMSBpbnNlcnRpb24oKyksIDEgZGVsZXRpb24oLSkNCg0KZGlmZiAtLWdp dCBhL2xpYi9zdGFja2RlcG90LmMgYi9saWIvc3RhY2tkZXBvdC5jDQppbmRleCBlZDcxN2RkMDhm ZjMuLjdlOGExNWU0MTYwMCAxMDA2NDQNCi0tLSBhL2xpYi9zdGFja2RlcG90LmMNCisrKyBiL2xp Yi9zdGFja2RlcG90LmMNCkBAIC0xMDYsNyArMTA2LDcgQEAgc3RhdGljIHN0cnVjdCBzdGFja19y ZWNvcmQgKmRlcG90X2FsbG9jX3N0YWNrKHVuc2lnbmVkIGxvbmcgKmVudHJpZXMsIGludCBzaXpl LA0KIAlyZXF1aXJlZF9zaXplID0gQUxJR04ocmVxdWlyZWRfc2l6ZSwgMSA8PCBTVEFDS19BTExP Q19BTElHTik7DQogDQogCWlmICh1bmxpa2VseShkZXBvdF9vZmZzZXQgKyByZXF1aXJlZF9zaXpl ID4gU1RBQ0tfQUxMT0NfU0laRSkpIHsNCi0JCWlmICh1bmxpa2VseShkZXBvdF9pbmRleCArIDEg Pj0gU1RBQ0tfQUxMT0NfTUFYX1NMQUJTKSkgew0KKwkJaWYgKHVubGlrZWx5KGRlcG90X2luZGV4 ICsgMiA+PSBTVEFDS19BTExPQ19NQVhfU0xBQlMpKSB7DQogCQkJV0FSTl9PTkNFKDEsICJTdGFj ayBkZXBvdCByZWFjaGVkIGxpbWl0IGNhcGFjaXR5Iik7DQogCQkJcmV0dXJuIE5VTEw7DQogCQl9 DQotLSANCjIuMTguMA0K