From mboxrd@z Thu Jan 1 00:00:00 1970 From: George Dunlap Subject: Re: [PATCH] blktap2: Invalid logic detecting unaligned buffers in vhd_write_block Date: Wed, 6 Jul 2016 14:16:57 +0100 Message-ID: References: <56EB2B73.3060905@gmail.com> <20160325161106.GB21910@citrix.com> <56F56895.6040006@gmail.com> <57053E8B.4070001@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <57053E8B.4070001@gmail.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Ross Philipson Cc: Wei Liu , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org T24gV2VkLCBBcHIgNiwgMjAxNiBhdCA1OjUxIFBNLCBSb3NzIFBoaWxpcHNvbiA8cm9zcy5waGls aXBzb25AZ21haWwuY29tPiB3cm90ZToKPiBPbiAwMy8yOS8yMDE2IDA3OjI2IEFNLCBHZW9yZ2Ug RHVubGFwIHdyb3RlOgo+PiBPbiBGcmksIE1hciAyNSwgMjAxNiBhdCA0OjM0IFBNLCBSb3NzIFBo aWxpcHNvbgo+PiA8cm9zcy5waGlsaXBzb25AZ21haWwuY29tPiB3cm90ZToKPj4+IE9uIDAzLzI1 LzIwMTYgMTI6MTEgUE0sIFdlaSBMaXUgd3JvdGU6Cj4+Pj4gT24gVGh1LCBNYXIgMTcsIDIwMTYg YXQgMDY6MTA6NTlQTSAtMDQwMCwgUm9zcyBQaGlsaXBzb24gd3JvdGU6Cj4+Pj4+IEl0IHNlZW1z IHRoZSBsb2dpYyBpcyBtZWFudCB0byBkZXRlY3Qgc2VjdG9yIHVuYWxpZ25lZCBidWZmZXJzIGZv ciBibG9jawo+Pj4+PiB3cml0ZXMuIFRoZSBOT1Rpbmcgb2YgdGhlIGxvZ2ljIGluc3RlYWQgbWFz a3Mgb2ZmIGFueSB1bmFsaWduZWQgYml0cyBhbmQKPj4+Pj4gYWxzbyB3b3VsZCBjYXVzZSB0aGUg ZnVuY3Rpb24gdG8gYWx3YXlzIGZhaWwuIEl0IHNlZW1zIHRoZSBmdW5jdGlvbiBpcyBub3QKPj4+ Pj4gdXNlZCBpbiBhbnkgb2YgdGhlIHRvb2xzIHNvIHRoYXQgaXMgcHJvYmFibHkgd2h5IHRoZSBw cm9ibGVtIGlzIG5vdCBzZWVuLgo+Pj4+PiBJbiB0aGUgdmhkX3JlYWRfYmxvY2sgZnVuY3Rpb24g aXQgaXMgY29ycmVjdC4KPj4+Pj4KPj4+Pj4gU2lnbmVkLW9mZi1ieTogUm9zcyBQaGlsaXBzb24g PHJvc3MucGhpbGlwc29uQGFpbmZvc2VjLmNvbT4KPj4+Pgo+Pj4+IFRoaXMgc2VlbXMgdG8gZmFs bCB1bmRlciB0b29scyB1bWJyZWxsYS4gSSd2ZSBsb29rIGF0IGJsa3RhcDIgY29kZSwKPj4+PiB0 aGUgcmVhc29uaW5nIGlzIGNvbnZpbmNpbmcgdG8gbWUgc286Cj4+Pj4KPj4+PiAgIEFja2VkLWJ5 OiBXZWkgTGl1IDx3ZWkubGl1MkBjaXRyaXguY29tPgo+Pj4+Cj4+Pj4gQnV0IEkndmUgbmV2ZXIg dXNlZCBibGt0YXAyIGFuZCB3ZSBkb24ndCBub3JtYWxseSB0ZXN0IGl0IHNvIEkgd291bGQKPj4+ PiBhbHNvIHdhaXQgYSBiaXQgbG9uZ2VyIHRvIHNlZSBpZiBhbnlib2R5IG9iamVjdHMgdG8gdGhp cyBjaGFuZ2UuCj4+Pj4KPj4+PiBPT0kgaWYgbm8gY29kZSB3YXMgdXNpbmcgdGhpcywgaG93IGRp ZCB5b3UgZGlzY292ZXIgdGhpcyBwcm9ibGVtPwo+Pj4KPj4+IFdlIGhhdmUgYW4gb2xkIGZvcmsg b2YgYmxrdGFwMiBmcm9tIHdheSBiYWNrIHdoZW4uIEkgd2FzIHdvcmtpbmcgdG8gZXh0cmFjdCBv dXIKPj4+IGNoYW5nZXMgYW5kIHR1cm4gdGhlbSBpbnRvIHBhdGNoZXMgc28gd2UgY291bGQgcmVi YXNlIG9uIHVwc3RyZWFtIGJsa3RhcDIuCj4+PiBTb21lb25lIGxvbmcgYWdvIGZvdW5kIHRoYXQg LSBJIGhhdmUgbm8gaWRlYSBob3cgYnV0IGl0IHdhcyBhIHZhbGlkIGZpeCBzbyBJCj4+PiB1cHN0 cmVhbWVkIGl0Lgo+Pj4KPj4+IFRoZXJlIGFyZSBhIG51bWJlciBvZiBvdGhlciBvbmVzIHRoYXQg d2VyZSBmb3VuZCB0aGF0IGFyZSBzdGlsbCBpbiB1cHN0cmVhbQo+Pj4gYmxrdGFwMiAtIEkgcGxh biB0byBzZW5kIHRoZW0gdG9vLgo+Pgo+PiBSb3NzLAo+Pgo+PiBJbnN0ZWFkIG9mIGNyb3NzLXBv cnRpbmcgZml4ZXMgZnJvbSBYZW5TZXJ2ZXIncyBibGt0YXAzIHRvIHRoZQo+PiBiaXRyb3R0aW5n IGJsa3RhcDIsIHdvdWxkIHlvdSBjb25zaWRlciB0YWtpbmcgdXAgbXkgd29yayBvbiByZXBsYWNp bmcKPj4gYmxrdGFwMiB3aXRoIGJ1aWxkaW5nIGJsa3RhcDMgYXMgYW4gZXh0ZXJuYWwgcHJvamVj dD8KPgo+IEdlb3JnZSwgYSBmZXcgcXVlc3Rpb25zIGJlbG93IHRvIGdldCBzdGFydGVkLi4uCj4K Pj4KPj4gVGhlIGJhc2ljIHNoYXBlIG9mIHRoaW5ncyB0aGF0IG5lZWQgdG8gaGFwcGVuIGZvciB0 aGF0IGFyZToKPj4KPj4gMS4gQWxsb3cgcWVtdSB0byBwcm92aWRlIGVtdWxhdGVkIGRldmljZXMg Zm9yIGRpc2tzIHdoaWNoIHVzZSBob3RwbHVnCj4+IHNjcmlwdHMgKGp1c3QgY2hlY2tlZCBpbiBs YXN0IHdlZWspCj4+Cj4+IDIuIERvIHRoZSB0d2Vha3MgbmVjZXNzYXJ5IHRvIGFsbG93IGJsa3Rh cDMgdG8gYmUgYnVpbHQgYXMgYW4KPj4gaW5kZXBlbmRlbnQgcHJvamVjdCAob3V0c2lkZSB0aGUg WGVuU2VydmVyIGJ1aWxkIHN5c3RlbSkKPgo+IEkgYW0gbm90IHN1cmUgd2hlcmUgdGhlIGxhdGVz dCBhbmQgZ3JlYXRlc3QgYmxrdGFwMyB3b3JrIGNhbiBiZSBmb3VuZC4gSSBoYXZlCj4gZm91bmQg c29tZSBvbGQgcmVwb3MgdGhhdCBoYXZlIGFjdGl2aXR5IHVwIHVudGlsIHRoZSB3b3JrIHN0b3Bw ZWQgb24gdGhhdAo+IHByb2plY3QgaW4gMjAxMy4gQ2FuIHlvdSBnaXZlIG1lIHNvbWUgcG9pbnRl cnMgb24gdGhpcz8KPgo+IEFsc28gaXQgc2VlbXMgdGhlIG92ZXJhbGwgaWRlYSBpcyB0byBub3Qg aGF2ZSBibGt0YXAzIChvciBhbnkgYmxrdGFwKSBsaXZlIGluCj4gdGhlIFhlbiB0cmVlIGJ1dCBy YXRoZXIgYmUgZXh0ZXJuYWwuIFdoZXJlIHdvdWxkIGJsa3RhcDMgbGl2ZT8KPgo+Pgo+PiAzLiBT d2l0Y2ggbGlieGwgdG8gdXNlIHRoZSBhbHJlYWR5LWluLXRyZWUgYmxvY2stdGFwIHNjcmlwdCAo d2hpY2gKPj4gY2FsbHMgdGFwY3RsKSByYXRoZXIgdGhhbiBsaW5raW5nIGFnYWluc3QgdGhlIGJs a3RhcCBsaWJyYXJ5Lgo+Cj4gSSBiZWxpZXZlIEkgZm91bmQgdGhpcyB3b3JrOgo+Cj4gaHR0cDov L2xpc3RzLnhlbnByb2plY3Qub3JnL2FyY2hpdmVzL2h0bWwveGVuLWRldmVsLzIwMTUtMDcvbXNn MDA4MDUuaHRtbAo+Cj4gSXQgbG9va3MgbGlrZSA0IG9mIHRoZSBzZXQgbWFkZSBpdCBpbiBhbmQg cGF0Y2hlcyAzICYgNSBzdGlsbCBuZWVkIHdvcms/IEkgY2FuCj4gcmUtYmFzZSB0aGVtLgoKSGV5 IFJvc3MsCgpTb3JyeSBmb3IgZHJvcHBpbmcgdGhpcyBvbiB0aGUgZmxvb3IgLS0gYXJlIHlvdSBz dGlsbCBpbnRlcmVzdGVkIGluCnRoaXMgd29yaz8gIElmIHNvIEknbGwgdGFrZSBzb21lIHRpbWUg dG8gc3VtbWFyaXplIHdoZXJlIEkgZ290IHRvLiA6LSkKCiAtR2VvcmdlCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0 Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK