From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Cooper Subject: Re: [PATCH for-4.9 v3 3/3] xen/livepatch: Don't crash on encountering STN_UNDEF relocations Date: Fri, 23 Jun 2017 11:13:49 +0100 Message-ID: <4ebab764-5489-9302-e57c-5afaadbbd719@citrix.com> References: <1498155329-4752-1-git-send-email-andrew.cooper3@citrix.com> <1498155329-4752-4-git-send-email-andrew.cooper3@citrix.com> <594D007F0200007800166303@prv-mh.provo.novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <594D007F0200007800166303@prv-mh.provo.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Jan Beulich Cc: Ross Lagerwall , Julien Grall , Stefano Stabellini , Xen-devel List-Id: xen-devel@lists.xenproject.org T24gMjMvMDYvMTcgMTA6NTAsIEphbiBCZXVsaWNoIHdyb3RlOgo+Pj4+IE9uIDIyLjA2LjE3IGF0 IDIwOjE1LCA8YW5kcmV3LmNvb3BlcjNAY2l0cml4LmNvbT4gd3JvdGU6Cj4+IEEgc3ltbmR4IG9m IFNUTl9VTkRFRiBpcyBzcGVjaWFsLCBhbmQgbWVhbnMgYSBzeW1ib2wgdmFsdWUgb2YgMC4gIFdo aWxlCj4+IGxlZ2l0aW1hdGUgaW4gdGhlIEVMRiBzdGFuZGFyZCwgaXRzIGV4aXN0YW5jZSBpbiBh IGxpdmVwYXRjaCBpcyBxdWVzdGlvbmFibGUKPj4gYXQgYmVzdC4gIFVudGlsIGEgcGxhdXNpYmxl IHVzZWNhc2UgcHJlc2VudHMgaXRzZWxmLCByZWplY3Qgc3VjaCBhIHJlbG9jYXRpb24KPj4gd2l0 aCAtRU9QTk9UU1VQUC4KPj4KPj4gQWRkaXRpb25hbGx5LCBmaXggYW4gb2ZmLWJ5LW9uZSBlcnJv ciB3aGlsZSByYW5nZSBjaGVja2luZyBzeW1uZHgsIGFuZCBwZXJmb3JtCj4+IGEgc2FmZXR5IGNo ZWNrIG9uIGVsZi0+c3ltW3N5bW5keF0uc3ltIGJlZm9yZSBkZXJlZmVuY2luZyBpdCwgdG8gYXZv aWQKPj4gdHJpcHBpbmcgb3ZlciBhIE5VTEwgcG9pbnRlciB3aGVuIGNhbGN1bGF0aW5nIHZhbC4K Pj4KPj4gU2lnbmVkLW9mZi1ieTogQW5kcmV3IENvb3BlciA8YW5kcmV3LmNvb3BlcjNAY2l0cml4 LmNvbT4KPiBSZXZpZXdlZC1ieTogSmFuIEJldWxpY2ggPGpiZXVsaWNoQHN1c2UuY29tPgo+IHdp dGggdHdvIHJlbWFya3M6Cj4KPj4gLS0tIGEveGVuL2FyY2gveDg2L2xpdmVwYXRjaC5jCj4+ICsr KyBiL3hlbi9hcmNoL3g4Ni9saXZlcGF0Y2guYwo+PiBAQCAtMTcwLDEyICsxNzAsMjQgQEAgaW50 IGFyY2hfbGl2ZXBhdGNoX3BlcmZvcm1fcmVsYShzdHJ1Y3QgbGl2ZXBhdGNoX2VsZiAqZWxmLAo+ PiAgICAgICAgICB1aW50OF90ICpkZXN0ID0gYmFzZS0+bG9hZF9hZGRyICsgci0+cl9vZmZzZXQ7 Cj4+ICAgICAgICAgIHVpbnQ2NF90IHZhbDsKPj4gIAo+PiAtICAgICAgICBpZiAoIHN5bW5keCA+ IGVsZi0+bnN5bSApCj4+ICsgICAgICAgIGlmICggc3ltbmR4ID09IFNUTl9VTkRFRiApCj4+ICsg ICAgICAgIHsKPj4gKyAgICAgICAgICAgIGRwcmludGsoWEVOTE9HX0VSUiwgTElWRVBBVENIICIl czogRW5jb3VudGVyZWQgU1ROX1VOREVGXG4iLAo+PiArICAgICAgICAgICAgICAgICAgICBlbGYt Pm5hbWUpOwo+PiArICAgICAgICAgICAgcmV0dXJuIC1FT1BOT1RTVVBQOwo+PiArICAgICAgICB9 Cj4+ICsgICAgICAgIGVsc2UgaWYgKCBzeW1uZHggPj0gZWxmLT5uc3ltICkKPj4gICAgICAgICAg ewo+PiAgICAgICAgICAgICAgZHByaW50ayhYRU5MT0dfRVJSLCBMSVZFUEFUQ0ggIiVzOiBSZWxh dGl2ZSByZWxvY2F0aW9uIHdhbnRzIHN5bWJvbEAldSB3aGljaCBpcyBwYXN0IGVuZCFcbiIsCj4+ ICAgICAgICAgICAgICAgICAgICAgIGVsZi0+bmFtZSwgc3ltbmR4KTsKPj4gICAgICAgICAgICAg IHJldHVybiAtRUlOVkFMOwo+PiAgICAgICAgICB9Cj4+ICsgICAgICAgIGVsc2UgaWYgKCAhZWxm LT5zeW1bc3ltbmR4XS5zeW0gKQo+IE5laXRoZXIgb2YgdGhlIHR3byAiZWxzZSIgaXMgcmVhbGx5 IG5lY2Vzc2FyeSwgYW5kIGVsc2V3aGVyZSB3ZSd2ZQo+IGJlZW4gdGVsbGluZyBwZW9wbGUgdG8g YXZvaWQgc3VjaC4KCkkgc2VlIHR3byBsb2dpY2FsbHkgZGlmZmVyZW50IHNjZW5hcmlvcy4KClBl ciB0aGUgc3R5bGUsIGlmIEkgd2VyZSB0byB1c2UgZnVsbHkgc2VwYXJhdGUgaWYoKSBzdGF0ZW1l bnRzLCBJJ2QgbmVlZAphIG5ld2xpbmUgYmV0d2VlbiBlYWNoLiAgVGhpcyBleHBhbmRzIHRoZSBj b2RlLCBhbmQgc2VwYXJhdGVzIGEgY2hhaW4gb2YKbG9naWNhbGx5LXJlbGF0ZWQgY2hlY2tzLgoK SU1PLCBpdHMgYmV0dGVyIHRvIGtlZXAgbG9naWNhbGx5IHJlbGF0ZWQgY2hlY2tzIG1vcmUgb2J2 aW91c2x5CnRvZ2V0aGVyLCB3aGlsZSBJIHdvdWxkIGRlZmluaXRlbHkgYWdyZWUgdGhhdCB1bnJl bGF0ZWQgY2hhaW5zICh3aGljaApjb3VsZCBpbiBwcmluY2lwbGUgYmUgaWYvZWxzZSBsaWtlIHRo aXMpIHNob3VsZCBiZSBzZXBhcmF0ZWQuCgo+Cj4+ICsgICAgICAgIHsKPj4gKyAgICAgICAgICAg IGRwcmludGsoWEVOTE9HX0VSUiwgTElWRVBBVENIICIlczogTm8gc3ltYm9sQCV1XG4iLAo+IFN5 bWJvbCB0YWJsZXMgY2FuIGdyb3cgbGFyZ2UsIGFuZCBmb3IgbGFyZ2UgbnVtYmVycyBJIGdlbmVy YWxseQo+IGZpbmQgaGV4IHJlcHJlc2VudGF0aW9uIHByZWZlcmFibGUgb2YgZGVjLiBPdG9oIHRo ZSBvdGhlcgo+IChwcmUtZXhpc3RpbmcpIG1lc3NhZ2UgdXNlcyBkZWMgdG9vIC4uLgoKSSdsbCBz dGF5IGNvbnNpc3RlbnQgd2l0aCBldmVyeXRoaW5nIGVsc2UuCgp+QW5kcmV3CgpfX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBs aXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2 ZWwK