From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: [PATCH] fix potential pa_range_info out of bound access Date: Fri, 9 Dec 2016 16:51:13 +0000 Message-ID: <95d249b6-8252-0ac5-795c-763e08d60b4e@arm.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cFOOD-0003sf-PU for xen-devel@lists.xenproject.org; Fri, 09 Dec 2016 16:51:17 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Stefano Stabellini , Stefano Stabellini Cc: xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org SGkgU3RlZmFubywKCk9uIDA5LzEyLzE2IDAxOjQwLCBTdGVmYW5vIFN0YWJlbGxpbmkgd3JvdGU6 Cj4gT24gVGh1LCA4IERlYyAyMDE2LCBTdGVmYW5vIFN0YWJlbGxpbmkgd3JvdGU6Cj4+IHBhX3Jh bmdlX2luZm8gaGFzIG9ubHkgOCBlbGVtZW50cyBhbmQgaXMgYWNjZXNzZWQgdXNpbmcgcGFfcmFu Z2UgYXMKPj4gaW5kZXguIHBhX3JhbmdlIGlzIGluaXRpYWxpemVkIHRvIDE2LCBwb3RlbnRpYWxs eSBjYXVzaW5nIG91dCBvZiBib3VuZAo+PiBhY2Nlc3MgZXJyb3JzLiBGaXggdGhlIGlzc3VlIGJ5 IGluaXRpYWxpemluZyBwYV9yYW5nZSB0byB0aGUgZWZmZWN0aXZlCj4+IG51bWJlciBvZiBwYV9y YW5nZV9pbmZvIGVsZW1lbnRzLgo+Pgo+PiBDSUQgMTM4MTg2NQo+Pgo+PiBTaWduZWQtb2ZmLWJ5 OiBTdGVmYW5vIFN0YWJlbGxpbmkgPHNzdGFiZWxsaW5pQGtlcm5lbC5vcmc+Cj4+Cj4+IGRpZmYg LS1naXQgYS94ZW4vYXJjaC9hcm0vcDJtLmMgYi94ZW4vYXJjaC9hcm0vcDJtLmMKPj4gaW5kZXgg ZTQ5OTFkZi4uMjQ1ZmNkMSAxMDA2NDQKPj4gLS0tIGEveGVuL2FyY2gvYXJtL3AybS5jCj4+ICsr KyBiL3hlbi9hcmNoL2FybS9wMm0uYwo+PiBAQCAtMTYyOSw3ICsxNjI5LDcgQEAgdm9pZCBfX2lu aXQgc2V0dXBfdmlydF9wYWdpbmcodm9pZCkKPj4gICAgICB9Owo+Pgo+PiAgICAgIHVuc2lnbmVk IGludCBjcHU7Cj4+IC0gICAgdW5zaWduZWQgaW50IHBhX3JhbmdlID0gMHgxMDsgLyogTGFyZ2Vy IHRoYW4gYW55IHBvc3NpYmxlIHZhbHVlICovCj4+ICsgICAgdW5zaWduZWQgaW50IHBhX3Jhbmdl ID0gc2l6ZW9mKHBhX3JhbmdlX2luZm8pIC8gc2l6ZW9mKHBhX3JhbmdlX2luZm9bMF0pOwo+Pgo+ PiAgICAgIGZvcl9lYWNoX29ubGluZV9jcHUgKCBjcHUgKQo+PiAgICAgIHsKPgo+IHRoaXMgaXMg d3JvbmcsIGl0IHNob3VsZCBiZSBzaXplb2YocGFfcmFuZ2VfaW5mbykgLyBzaXplb2YocGFfcmFu Z2VfaW5mb1swXSkgLSAxOgo+Cj4gLS0tCj4gcGFfcmFuZ2VfaW5mbyBoYXMgb25seSA4IGVsZW1l bnRzIGFuZCBpcyBhY2Nlc3NlZCB1c2luZyBwYV9yYW5nZSBhcwo+IGluZGV4LiBwYV9yYW5nZSBp cyBpbml0aWFsaXplZCB0byAxNiwgcG90ZW50aWFsbHkgY2F1c2luZyBvdXQgb2YgYm91bmQKPiBh Y2Nlc3MgZXJyb3JzLiBGaXggdGhlIGlzc3VlIGJ5IGluaXRpYWxpemluZyBwYV9yYW5nZSB0byB0 aGUgZWZmZWN0aXZlCj4gbnVtYmVyIG9mIHBhX3JhbmdlX2luZm8gZWxlbWVudHMgbWludXMgMS4K Pgo+IENvdmVyaXR5LUlEOiAxMzgxODY1Cj4KPiBTaWduZWQtb2ZmLWJ5OiBTdGVmYW5vIFN0YWJl bGxpbmkgPHNzdGFiZWxsaW5pQGtlcm5lbC5vcmc+Cj4KPiBkaWZmIC0tZ2l0IGEveGVuL2FyY2gv YXJtL3AybS5jIGIveGVuL2FyY2gvYXJtL3AybS5jCj4gaW5kZXggZTQ5OTFkZi4uMTQ5MDFiMCAx MDA2NDQKPiAtLS0gYS94ZW4vYXJjaC9hcm0vcDJtLmMKPiArKysgYi94ZW4vYXJjaC9hcm0vcDJt LmMKPiBAQCAtMTYyOSw3ICsxNjI5LDcgQEAgdm9pZCBfX2luaXQgc2V0dXBfdmlydF9wYWdpbmco dm9pZCkKPiAgICAgIH07Cj4KPiAgICAgIHVuc2lnbmVkIGludCBjcHU7Cj4gLSAgICB1bnNpZ25l ZCBpbnQgcGFfcmFuZ2UgPSAweDEwOyAvKiBMYXJnZXIgdGhhbiBhbnkgcG9zc2libGUgdmFsdWUg Ki8KPiArICAgIHVuc2lnbmVkIGludCBwYV9yYW5nZSA9IEFSUkFZX1NJWkUocGFfcmFuZ2VfaW5m bykgLSAxOwoKVGhlIHByZXZpb3VzIHZhbHVlIHdhcyBjb25mdXNpbmcgYW5kIEkgdGhpbmsgdGhp cyBvbmUgaXMgZXZlbiBtb3JlLgoKQnV0IHRoaXMgaXMgbm90IHJlYWxseSB0aGUgcHJvYmxlbSwg aXQgaXMgYmVjYXVzZSB0aGUgYm91bmRhcnkgY2hlY2sgdGhlIApsYXRlciBvbiBpcyB3cm9uZzoK CmlmICggcGFfcmFuZ2UmMHg4IHx8ICFwYV9yYW5nZV9pbmZvW3BhX3JhbmdlXS5wYWJpdHMgKQoK SXQgd2lsbCBvbmx5IGNoZWNrIHdoZXRoZXIgYml0IDMgaXMgbm90IHNldC4gQnV0IHdlIHdhbnQg dG8gY2hlY2sgdGhhdCAKcGFfcmFuZ2UgaXMgdGhlIHJhbmdlIG9mIHRoZSBhcnJheS4gSS5lCgpw YV9yYW5nZSA8IEFSUkFZX1NJWkUocGFfcmFuZ2VfaW5mbykKCklmIHlvdSBzdGlsbCB3YW50IHRv IGNoYW5nZSB0aGUgcGFfcmFuZ2UgaW5pdGlhbCB2YWx1ZSwgdGhlbiBJIHdvdWxkIApwcmVmZXIg dG8gc2VlIHRoZSBib290IENQVSBvbmUgKGkuZSBib290X2NwdV9kYXRhLm1tNjQucGFfcmFuZ2Up LgoKQ2hlZXJzLAoKLS0gCkp1bGllbiBHcmFsbAoKX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVsIG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlz dHMueGVuLm9yZwpodHRwczovL2xpc3RzLnhlbi5vcmcveGVuLWRldmVsCg==