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Fri, 4 Oct 2019 09:42:47 -0700 (PDT) From: Julien Grall To: xen-devel@lists.xenproject.org Date: Fri, 4 Oct 2019 17:42:43 +0100 Message-Id: <20191004164243.30822-1-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 Subject: [Xen-devel] [PATCH for-4.13] xen/xsm: flask: Prevent NULL deference in flask_assign_{, dt}device() X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: jgross@suse.com, Julien Grall , Daniel De Graaf , paul@xen.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Zmxhc2tfYXNzaWduX3ssIGR0fWRldmljZSgpIG1heSBiZSB1c2VkIHRvIGNoZWNrIHdoZXRoZXIg eW91IGNhbiB0ZXN0IGlmCmEgZGV2aWNlIGlzIGFzc2lnbmVkLiBJbiB0aGlzIGNhc2UsIHRoZSBk b21haW4gd2lsbCBiZSBOVUxMLgoKSG93ZXZlciwgZmxhc2tfaW9tbXVfcmVzb3VyY2VfdXNlX3Bl cm0oKSB3aWxsIGJlIGNhbGxlZCBhbmQgbWF5IGVuZCB1cAp0byBkZWZlcmVuY2UgYSBOVUxMIHBv aW50ZXIuIFRoaXMgY2FuIGJlIHByZXZlbnRlZCBieSBtb3ZpbmcgdGhlIGNhbGwKYWZ0ZXIgd2Ug Y2hlY2sgdGhlIHZhbGlkaXR5IGZvciB0aGUgZG9tYWluIHBvaW50ZXIuCgpDb3Zlcml0eS1JRDog MTQ4Njc0MQpGaXhlczogNzFlNjE3YTZiOCAoJ3VzZSBpc19pb21tdV9lbmFibGVkKCkgd2hlcmUg YXBwcm9wcmlhdGUuLi4nKQpTaWduZWQtb2ZmLWJ5OiBKdWxpZW4gR3JhbGwgPGp1bGllbi5ncmFs bEBhcm0uY29tPgotLS0KIHhlbi94c20vZmxhc2svaG9va3MuYyB8IDggKysrKysrLS0KIDEgZmls ZSBjaGFuZ2VkLCA2IGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEv eGVuL3hzbS9mbGFzay9ob29rcy5jIGIveGVuL3hzbS9mbGFzay9ob29rcy5jCmluZGV4IDNiMzA4 Mjc3NjQuLmNmN2YyNWNkYTIgMTAwNjQ0Ci0tLSBhL3hlbi94c20vZmxhc2svaG9va3MuYworKysg Yi94ZW4veHNtL2ZsYXNrL2hvb2tzLmMKQEAgLTEyOTYsMTEgKzEyOTYsMTMgQEAgc3RhdGljIGlu dCBmbGFza19hc3NpZ25fZGV2aWNlKHN0cnVjdCBkb21haW4gKmQsIHVpbnQzMl90IG1hY2hpbmVf YmRmKQogICAgIHUzMiBkc2lkLCByc2lkOwogICAgIGludCByYyA9IC1FUEVSTTsKICAgICBzdHJ1 Y3QgYXZjX2F1ZGl0X2RhdGEgYWQ7Ci0gICAgdTMyIGRwZXJtID0gZmxhc2tfaW9tbXVfcmVzb3Vy Y2VfdXNlX3Blcm0oZCk7CisgICAgdTMyIGRwZXJtOwogCiAgICAgaWYgKCAhZCApCiAgICAgICAg IHJldHVybiBmbGFza190ZXN0X2Fzc2lnbl9kZXZpY2UobWFjaGluZV9iZGYpOwogCisgICAgZHBl cm0gPSBmbGFza19pb21tdV9yZXNvdXJjZV91c2VfcGVybShkKTsKKwogICAgIHJjID0gY3VycmVu dF9oYXNfcGVybShkLCBTRUNDTEFTU19SRVNPVVJDRSwgUkVTT1VSQ0VfX0FERCk7CiAgICAgaWYg KCByYyApCiAgICAgICAgIHJldHVybiByYzsKQEAgLTEzNTUsMTEgKzEzNTcsMTMgQEAgc3RhdGlj IGludCBmbGFza19hc3NpZ25fZHRkZXZpY2Uoc3RydWN0IGRvbWFpbiAqZCwgY29uc3QgY2hhciAq ZHRwYXRoKQogICAgIHUzMiBkc2lkLCByc2lkOwogICAgIGludCByYyA9IC1FUEVSTTsKICAgICBz dHJ1Y3QgYXZjX2F1ZGl0X2RhdGEgYWQ7Ci0gICAgdTMyIGRwZXJtID0gZmxhc2tfaW9tbXVfcmVz b3VyY2VfdXNlX3Blcm0oZCk7CisgICAgdTMyIGRwZXJtOwogCiAgICAgaWYgKCAhZCApCiAgICAg ICAgIHJldHVybiBmbGFza190ZXN0X2Fzc2lnbl9kdGRldmljZShkdHBhdGgpOwogCisgICAgZHBl cm0gPSBmbGFza19pb21tdV9yZXNvdXJjZV91c2VfcGVybShkKTsKKwogICAgIHJjID0gY3VycmVu dF9oYXNfcGVybShkLCBTRUNDTEFTU19SRVNPVVJDRSwgUkVTT1VSQ0VfX0FERCk7CiAgICAgaWYg KCByYyApCiAgICAgICAgIHJldHVybiByYzsKLS0gCjIuMTEuMAoKCl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBtYWlsaW5nIGxpc3QKWGVu LWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMueGVucHJvamVjdC5vcmcv bWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=