From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from koto.vergenet.net ([210.128.90.7]) by bombadil.infradead.org with esmtp (Exim 4.72 #1 (Red Hat Linux)) id 1OMCDy-0007mV-8v for kexec@lists.infradead.org; Wed, 09 Jun 2010 03:45:07 +0000 Date: Wed, 9 Jun 2010 12:44:52 +0900 From: Simon Horman Subject: Re: [PATCH] Fix Oops in crash_shrink_memory Message-ID: <20100609034452.GA28948@verge.net.au> References: <1275895711.4365.18.camel@pavan.naregundi> <1275980857.2583.15.camel@pavan.naregundi> <20100608075959.GB7110@cr0.nay.redhat.com> <1275986405.5015.13.camel@pavan.naregundi> <20100608085440.GC7110@cr0.nay.redhat.com> <1275990107.5015.55.camel@pavan.naregundi> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1275990107.5015.55.camel@pavan.naregundi> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: kexec-bounces@lists.infradead.org Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Pavan Naregundi Cc: =?utf-8?Q?Am=C3=A9rico?= Wang , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, vgoyal@redhat.com, hbabu@us.ibm.com T24gVHVlLCBKdW4gMDgsIDIwMTAgYXQgMDM6MTE6NDdQTSArMDUzMCwgUGF2YW4gTmFyZWd1bmRp IHdyb3RlOgo+IE9uIFR1ZSwgMjAxMC0wNi0wOCBhdCAxNjo1NCArMDgwMCwgQW3DqXJpY28gV2Fu ZyB3cm90ZToKPiA+IE9uIFR1ZSwgSnVuIDA4LCAyMDEwIGF0IDAyOjEwOjA1UE0gKzA1MzAsIFBh dmFuIE5hcmVndW5kaSB3cm90ZToKPiA+ID5PbiBUdWUsIDIwMTAtMDYtMDggYXQgMTU6NTkgKzA4 MDAsIEFtw6lyaWNvIFdhbmcgd3JvdGU6Cj4gPiA+PiBPbiBUdWUsIEp1biAwOCwgMjAxMCBhdCAx MjozNzozN1BNICswNTMwLCBQYXZhbiBOYXJlZ3VuZGkgd3JvdGU6Cj4gPiA+PiA+QWRkaW5nIEND J3MuLgo+ID4gPj4gPgo+ID4gPj4gPgo+ID4gPj4gPk9uIE1vbiwgMjAxMC0wNi0wNyBhdCAxMjo1 OCArMDUzMCwgUGF2YW4gTmFyZWd1bmRpIHdyb3RlOgo+ID4gPj4gPj4gSGkgRXZlcnlvbmUsCj4g PiA+PiA+PiAKPiA+ID4+ID4+IFBsZWFzZSBhZGQgbWUgdG8gQ0MgaW4geW91ciByZXBseS4uCj4g PiA+PiA+PiAKPiA+ID4+ID4+IFdoZW4gY3Jhc2hrZXJuZWwgaXMgbm90IGVuYWJsZWQsICJlY2hv IDAgPiAvc3lzL2tlcm5lbC9rZXhlY19jcmFzaF9zaXplIgo+ID4gPj4gPj4gd2lsbCBnZW5lcmF0 ZSBPT1BTIG1lc3NhZ2UgaW4gdGhlIGtlcm5lbC4gQmVsb3cgaXMgdGhlIE9PUFMgbWVzc2FnZSBh bmQKPiA+ID4+ID4+IG90aGVyIGRldGFpbHMsCj4gPiA+PiA+PiAKPiA+ID4+ID4+ICMgY2F0IC9w cm9jL2NtZGxpbmUgCj4gPiA+PiA+PiBybyAgTEFORz1lbl9VUy5VVEYtOCBTWVNGT05UPWxhdGFy Y3lyaGViLXN1bjE2IEtFWVRBQkxFPXVzIGNvbnNvbGU9aHZjMAo+ID4gPj4gPj4gcmhnYiByb290 PVVVSUQ9ZWFmZDk4NzQtMDEwYy00NmY5LWEwYzYtZWE4ZGI3YzYxYWMzCj4gPiA+PiA+PiAjIHVu YW1lIC1hCj4gPiA+PiA+PiBMaW51eCBYWFhYWFhYWCAyLjYuMzUtcmMxICMxIFNNUCBNb24gSnVu IDcgMTg6MDQ6NTMgSVNUIDIwMTAgcHBjNjQgcHBjNjQKPiA+ID4+ID4+IHBwYzY0IEdOVS9MaW51 eAo+ID4gPj4gPj4gIyBjZCAvc3lzL2tlcm5lbC8KPiA+ID4+ID4+ICMgbHMKPiA+ID4+ID4+IGRl YnVnICAgICAgICAgICAgICAga2V4ZWNfbG9hZGVkICBwcm9maWxpbmcgICAgICB1ZXZlbnRfc2Vx bnVtCj4gPiA+PiA+PiBrZXhlY19jcmFzaF9sb2FkZWQgIG1tICAgICAgICAgICAgc2VjdXJpdHkg ICAgICAgdm1jb3JlaW5mbwo+ID4gPj4gPj4ga2V4ZWNfY3Jhc2hfc2l6ZSAgICBub3RlcyAgICAg ICAgIHVldmVudF9oZWxwZXIKPiA+ID4+ID4+ICMgY2F0IGtleGVjX2NyYXNoX2xvYWRlZAo+ID4g Pj4gPj4gMAo+ID4gPj4gPj4gIyBjYXQga2V4ZWNfbG9hZGVkCj4gPiA+PiA+PiAwCj4gPiA+PiA+ PiAjIGNhdCBrZXhlY19jcmFzaF9zaXplCj4gPiA+PiA+PiAxCj4gPiA+PiA+PiAjIGVjaG8gMCA+ IGtleGVjX2NyYXNoX3NpemUKPiA+ID4+ID4+IFVuYWJsZSB0byBoYW5kbGUga2VybmVsIHBhZ2lu ZyByZXF1ZXN0IGZvciBkYXRhIGF0IGFkZHJlc3MgMHgwMDAwMDAzMAo+ID4gPj4gPj4gRmF1bHRp bmcgaW5zdHJ1Y3Rpb24gYWRkcmVzczogMHhjMDAwMDAwMDAwMDkzMGI0Cj4gPiA+PiA+PiBPb3Bz OiBLZXJuZWwgYWNjZXNzIG9mIGJhZCBhcmVhLCBzaWc6IDExIFsjMV0KPiA+ID4+ID4+IFNNUCBO Ul9DUFVTPTEwMjQgTlVNQSBwU2VyaWVzCj4gPiA+PiA+PiBsYXN0IHN5c2ZzIGZpbGU6IC9zeXMv a2VybmVsL2tleGVjX2NyYXNoX3NpemUKPiA+ID4+ID4+IE1vZHVsZXMgbGlua2VkIGluOiBzdW5y cGMgaXB2NiBleHQzIGpiZCBkbV9taXJyb3IgZG1fcmVnaW9uX2hhc2ggZG1fbG9nCj4gPiA+PiA+ PiBkbV9tdWx0aXBhdGggZG1fbW9kIHVpbnB1dCBzZyBlaGVhIHNyX21vZCBpYm12ZXRoIGNkcm9t IGV4dDQgamJkMgo+ID4gPj4gPj4gbWJjYWNoZSBzZF9tb2QgY3JjX3QxMGRpZiBpYm12c2NzaWMg c2NzaV90cmFuc3BvcnRfc3JwIHNjc2lfdGd0IFtsYXN0Cj4gPiA+PiA+PiB1bmxvYWRlZDogc2Nz aV93YWl0X3NjYW5dCj4gPiA+PiA+PiBOSVA6IGMwMDAwMDAwMDAwOTMwYjQgTFI6IGMwMDAwMDAw MDAwOTMwYWMgQ1RSOiBjMDAwMDAwMDAwMGI3Y2UwCj4gPiA+PiA+PiBSRUdTOiBjMDAwMDAwMGI3 ODAzNzUwIFRSQVA6IDAzMDAgICBOb3QgdGFpbnRlZCAgKDIuNi4zNS1yYzEpCj4gPiA+PiA+PiBN U1I6IDgwMDAwMDAwMDAwMDkwMzIgPEVFLE1FLElSLERSPiAgQ1I6IDI4MjQyNDgyICBYRVI6IDIw MDAwMDAwCj4gPiA+PiA+PiBEQVI6IDAwMDAwMDAwMDAwMDAwMzAsIERTSVNSOiAwMDAwMDAwMDQw MDAwMDAwCj4gPiA+PiA+PiBUQVNLID0gYzAwMDAwMDBiOWNjM2RjMFsxMzgxXSAnYmFzaCcgVEhS RUFEOiBjMDAwMDAwMGI3ODAwMDAwIENQVTogMTIKPiA+ID4+ID4+IEdQUjAwOiBjMDAwMDAwMDAw MDkzMGFjIGMwMDAwMDAwYjc4MDM5ZDAgYzAwMDAwMDAwMGU4ODVhOAo+ID4gPj4gPj4gYzAwMDAw MDAwMGY0Mjk1MCAKPiA+ID4+ID4+IEdQUjA0OiBjMDAwMDAwMGI3ODAzYWYwIDAwMDAwMDAwMDAw MDAwMDggMDAwMDAwMDAwMDAwMDAwMgo+ID4gPj4gPj4gYzAwMDAwMDAwMDVjNjQzOCAKPiA+ID4+ ID4+IEdQUjA4OiAwMDAwMDAwMDAwMDAwMDAwIDAwMDAwMDAwODAwMDAwMGMgMDAwMDAwMDAwMDAw MDAwMAo+ID4gPj4gPj4gMDAwMDAwMDAwMDAwMDAwMCAKPiA+ID4+ID4+IEdQUjEyOiAwMDAwMDAw MDQwMjQyNDQ4IGMwMDAwMDAwMDc0NDFlMDAgMDAwMDAwMDAxMDBmNjIxMAo+ID4gPj4gPj4gMDAw MDAwMDAwMDAwMDAwMCAKPiA+ID4+ID4+IEdQUjE2OiAwMDAwMDAwMDEwMGY0YTM4IDAwMDAwMDAw MTAwY2ZiOTggMDAwMDAwMDAxMDBmNGJkYwo+ID4gPj4gPj4gMDAwMDAwMDAxMDBmNGI0YyAKPiA+ ID4+ID4+IEdQUjIwOiAwMDAwMDAwMDEwM2Y0ZGU4IDAwMDAwMDAwMDAwMDAwMDAgMDAwMDAwMDAw MDAwMDAwMAo+ID4gPj4gPj4gMDAwMDAwMDAxMDBmMDAwMCAKPiA+ID4+ID4+IEdQUjI0OiBjMDAw MDAwMDAwNWM2NWMwIDAwMDAwMDAwMDAwMDAwMDAgYzAwMDAwMDAwMGRhODNlMAo+ID4gPj4gPj4g YzAwMDAwMDBiYzY3Zjc4MCAKPiA+ID4+ID4+IEdQUjI4OiBjMDAwMDAwMGJjNjg0YWUwIGMwMDAw MDAwMDBmNDI5NTAgYzAwMDAwMDAwMGUxZTNmOAo+ID4gPj4gPj4gYzAwMDAwMDAwMGRhODQwOCAK PiA+ID4+ID4+IE5JUCBbYzAwMDAwMDAwMDA5MzBiNF0gLnJlbGVhc2VfcmVzb3VyY2UrMHgzNC8w eGUwCj4gPiA+PiA+PiBMUiBbYzAwMDAwMDAwMDA5MzBhY10gLnJlbGVhc2VfcmVzb3VyY2UrMHgy Yy8weGUwCj4gPiA+PiA+PiBDYWxsIFRyYWNlOgo+ID4gPj4gPj4gW2MwMDAwMDAwYjc4MDM5ZDBd IFtjMDAwMDAwMDAwMDkzMGFjXSAucmVsZWFzZV9yZXNvdXJjZSsweDJjLzB4ZTAKPiA+ID4+ID4+ ICh1bnJlbGlhYmxlKQo+ID4gPj4gPj4gW2MwMDAwMDAwYjc4MDNhNjBdIFtjMDAwMDAwMDAwMGQ0 ZmM4XSAuY3Jhc2hfc2hyaW5rX21lbW9yeSsweDFjOC8weDFmMAo+ID4gPj4gPj4gW2MwMDAwMDAw Yjc4MDNiMzBdIFtjMDAwMDAwMDAwMGI3ZDM4XSAua2V4ZWNfY3Jhc2hfc2l6ZV9zdG9yZSsweDU4 LzB4OTAKPiA+ID4+ID4+IFtjMDAwMDAwMGI3ODAzYmMwXSBbYzAwMDAwMDAwMDJiMGJiNF0gLmtv YmpfYXR0cl9zdG9yZSsweDM0LzB4NTAKPiA+ID4+ID4+IFtjMDAwMDAwMGI3ODAzYzMwXSBbYzAw MDAwMDAwMDIyNmQ1Y10gLnN5c2ZzX3dyaXRlX2ZpbGUrMHhlYy8weDFmMAo+ID4gPj4gPj4gW2Mw MDAwMDAwYjc4MDNjZTBdIFtjMDAwMDAwMDAwMTllMGJjXSAudmZzX3dyaXRlKzB4ZWMvMHgxZjAK PiA+ID4+ID4+IFtjMDAwMDAwMGI3ODAzZDgwXSBbYzAwMDAwMDAwMDE5ZTJlOF0gLlN5U193cml0 ZSsweDU4LzB4YjAKPiA+ID4+ID4+IFtjMDAwMDAwMGI3ODAzZTMwXSBbYzAwMDAwMDAwMDAwODUy Y10gc3lzY2FsbF9leGl0KzB4MC8weDQwCj4gPiA+PiA+PiBJbnN0cnVjdGlvbiBkdW1wOgo+ID4g Pj4gPj4gZmJhMWZmZTggZmJjMWZmZjAgZmJlMWZmZjggZWJjMmIyMjggN2M3ZjFiNzggZjgwMTAw MTAgZjgyMWZmNzEgZWJiZTgwMDAgCj4gPiA+PiA+PiA3ZmEzZWI3OCA0ODRlMzVkOSA2MDAwMDAw MCBlOTdmMDAyMCA8ZTkyYjAwMzA+IDJmYTkwMDAwIDQxOWUwMDJjCj4gPiA+PiA+PiA3ZmJmNDgw MCAKPiA+ID4+ID4+IC0tLVsgZW5kIHRyYWNlIGFmYmM3ODA0NjJjOWJmNGUgXS0tLQo+ID4gPj4g Pj4gCj4gPiA+PiA+PiBXaGVuIGNyYXNoa2VybmVsIGlzIG5vdCBlbmFibGVkLCBjcmFzaGtfcmVz IHJlc291cmNlIGhhdmUgbm90IGJlZW4KPiA+ID4+ID4+IHJlc2VydmVkLiBIZW5jZSBjcmFzaGtf cmVzLnBhcmVudCB3aWxsIGJlIE5VTEwuCj4gPiA+PiA+PiAKPiA+ID4+ID4+IEF0dGFjaGluZyBh IHNpbXBsZSBwYXRjaCB0byB0aGlzIHByb2JsZW0uIFBhdGNoIGlzIHRlc3RlZCBhbmQgcmVzb2x2 ZXMgdGhpcyBidWcuCj4gPiA+PiAKPiA+ID4+IAo+ID4gPj4gT3VjaC4uLgo+ID4gPj4gCj4gPiA+ PiBUaGUgcGF0Y2ggaW5kZWVkIGFkZHJlc3NlcyB0aGUgcHJvYmxlbSwgbG9va3MgZ29vZCB0byBt ZS4KPiA+ID4+IFBsZWFzZSBhZGQgeW91ciBTaWduZWQtb2ZmLWJ5IGFuZCBteToKPiA+ID4+IAo+ ID4gPj4gUmV2aWV3ZWQtYnk6IFdBTkcgQ29uZyA8eGl5b3Uud2FuZ2NvbmdAZ21haWwuY29tPgo+ ID4gPj4gCj4gPiA+PiBBbm90aGVyIHByb2JsZW0gaXMgdGhhdCB5b3Ugc2hvdWxkIGdldCAwIGlu c3RlYWQgb2YgMSB3aGVuIHlvdSBkb24ndAo+ID4gPj4gcmVzZXJ2ZSBhbnkgbWVtb3J5Lgo+ID4g Pgo+ID4gPldlIGdldCAxIGhlcmUgYmVjYXVzZSwgY3Jhc2hfZ2V0X21lbW9yeV9zaXplKCkgYWRk cyAxIGFzIGJlbG93LCAKPiA+ID4KPiA+ID5zaXplID0gY3Jhc2hrX3Jlcy5lbmQgLSBjcmFzaGtf cmVzLnN0YXJ0ICsgMTsKPiA+ID4KPiA+ID5XZSBjYW50IHJlbW92ZSB0aGlzIGFkZGl0aW9uLCBh cyBpdCBpcyByZXF1aXJlZCB0byBkaXNwbGF5IGNvcnJlY3Qgc2l6ZQo+ID4gPmluIGNhc2UgaWYg d2UgcmVzZXJ2ZSB0aGUgY3Jhc2ggbWVtb3J5Lgo+ID4gCj4gPiBZZWFoLCBidXQgMCBpcyBhIHNw ZWNpYWwgY2FzZSwgaXNuJ3QgaXQ/Cj4gCj4gWWVzLCBpdCBpcyBhIHNwZWNpYWwgY2FzZS4KPiAK PiBQcmVwYXJlZCBhIG5ldyBwYXRjaCB3aGljaCBzb2x2ZXMgYm90aCBvZiB0aGlzIGlzc3Vlcy4K PiAKPiAxLiBPT1BzIGluIGNyYXNoX3Nocmlua19tZW1vcnkKPiAyLiBtYWtlIGNyYXNoX2dldF9t ZW1vcnlfc2l6ZSB0byByZXR1cm4gY29ycmVjdCBzaXplLCBpbiBjYXNlIG9mIGNyYXNoCj4gbWVt b3J5IG5vdCByZXNlcnZlZC4KPiAKPiBQYXRjaCBpcyB0ZXN0ZWQuCj4gCj4gVGhhbmsgWW91Lgo+ IAo+IFNpZ25lZC1vZmYtYnk6IFBhdmFuIE5hcmVndW5kaSA8cGF2YW5AbGludXgudm5ldC5pYm0u Y29tPgo+IFJldmlld2VkLWJ5OiBXQU5HIENvbmcgPHhpeW91Lndhbmdjb25nQGdtYWlsLmNvbT4K PiAtLS0KPiAKPiAKPiAKCj4gZGlmZiAtTmF1ciBhL2tlcm5lbC9rZXhlYy5jIGIva2VybmVsL2tl eGVjLmMKPiAtLS0gYS9rZXJuZWwva2V4ZWMuYwkyMDEwLTA2LTA4IDIxOjE3OjIxLjg1MDAwMDAz MyArMDUzMAo+ICsrKyBiL2tlcm5lbC9rZXhlYy5jCTIwMTAtMDYtMDggMjE6MTk6MjYuMTkwMDAw MDQzICswNTMwCj4gQEAgLTEwODksOSArMTA4OSwxMCBAQAo+ICAKPiAgc2l6ZV90IGNyYXNoX2dl dF9tZW1vcnlfc2l6ZSh2b2lkKQo+ICB7Cj4gLQlzaXplX3Qgc2l6ZTsKPiArCXNpemVfdCBzaXpl ID0gMDsKPiAgCW11dGV4X2xvY2soJmtleGVjX211dGV4KTsKPiAtCXNpemUgPSBjcmFzaGtfcmVz LmVuZCAtIGNyYXNoa19yZXMuc3RhcnQgKyAxOwo+ICsJaWYoY3Jhc2hrX3Jlcy5lbmQgIT0gY3Jh c2hrX3Jlcy5zdGFydCkKPiArCQlzaXplID0gY3Jhc2hrX3Jlcy5lbmQgLSBjcmFzaGtfcmVzLnN0 YXJ0ICsgMTsKCk1pbm9yIHN0eWxlLWlzc3VlOiB0aGVyZSBzaG91bGQgYmUgYSBzcGFjZSBiZXR3 ZWVuIGlmIGFuZCAoLgoKPiAgCW11dGV4X3VubG9jaygma2V4ZWNfbXV0ZXgpOwo+ICAJcmV0dXJu IHNpemU7Cj4gIH0KPiBAQCAtMTEzNCw3ICsxMTM1LDcgQEAKPiAgCj4gIAlmcmVlX3Jlc2VydmVk X3BoeXNfcmFuZ2UoZW5kLCBjcmFzaGtfcmVzLmVuZCk7Cj4gIAo+IC0JaWYgKHN0YXJ0ID09IGVu ZCkKPiArCWlmICgoc3RhcnQgPT0gZW5kKSAmJiAoY3Jhc2hrX3Jlcy5wYXJlbnQgIT0gTlVMTCkp Cj4gIAkJcmVsZWFzZV9yZXNvdXJjZSgmY3Jhc2hrX3Jlcyk7Cj4gIAljcmFzaGtfcmVzLmVuZCA9 IGVuZCAtIDE7Cj4gIAoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCmtleGVjIG1haWxpbmcgbGlzdAprZXhlY0BsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6 Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8va2V4ZWMK