From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jianpeng Ma" Subject: Re: Re: [PATCH] raid5: fix possible oops in add_stripe_bio when enable pr_debug Date: Thu, 20 Sep 2012 15:17:54 +0800 Message-ID: <2012092015175190687821@gmail.com> References: <2012092014334148441317@gmail.com>, <20120920164744.1aab090c@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Return-path: Sender: linux-raid-owner@vger.kernel.org To: Neil Brown Cc: linux-raid List-Id: linux-raid.ids T24gMjAxMi0wOS0yMCAxNDo0NyBOZWlsQnJvd24gPG5laWxiQHN1c2UuZGU+IFdyb3RlOg0KPk9u IFRodSwgMjAgU2VwIDIwMTIgMTQ6MzQ6MDAgKzA4MDAgIkppYW5wZW5nIE1hIiA8bWFqaWFucGVu Z0BnbWFpbC5jb20+IHdyb3RlOg0KPg0KPj4gSW4gZnVuYyBhZGRfc3RyaXBlX2JpbzoNCj4+ID4+ IC4uLi4uDQo+PiA+PgkJYmlwID0gJnNoLT5kZXZbZGRfaWR4XS50b3JlYWQ7DQo+PiA+PiAuLi4u Li4NCj4+ID4+c3Bpbl91bmxvY2tfaXJxKCZzaC0+c3RyaXBlX2xvY2spOw0KPj4gDQo+PiA+Pglw cl9kZWJ1ZygiYWRkZWQgYmkgYiMlbGx1IHRvIHN0cmlwZSBzIyVsbHUsIGRpc2sgJWQuXG4iLA0K Pj4gPj4JCSh1bnNpZ25lZCBsb25nIGxvbmcpKCpiaXApLT5iaV9zZWN0b3IsDQo+PiA+PgkJKHVu c2lnbmVkIGxvbmcgbG9uZylzaC0+c2VjdG9yLCBkZF9pZHgpOw0KPj4gQWZ0ZXIgc3Bpbl91bmxv Y2tfaXJxLCB0aGlzIHRocmVhZCBzY2hlZGVkIGFuZCB0b3JlYWQgbWF5IGJlY29tZSBudWxsLg0K Pj4gU28gaXQgd2lsbCBiZSBvb3BzLg0KPj4gDQo+PiBTaWduZWQtb2ZmLWJ5OiBKaWFucGVuZyBN YSA8bWFqaWFucGVuZ0BnbWFpbC5jb20+DQo+PiAtLS0NCj4+ICBkcml2ZXJzL21kL3JhaWQ1LmMg fCAgICAzICsrLQ0KPj4gIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKyksIDEgZGVsZXRp b24oLSkNCj4+IA0KPj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvbWQvcmFpZDUuYyBiL2RyaXZlcnMv bWQvcmFpZDUuYw0KPj4gaW5kZXggYWRkYTk0ZC4uZjE3MmIxZSAxMDA2NDQNCj4+IC0tLSBhL2Ry aXZlcnMvbWQvcmFpZDUuYw0KPj4gKysrIGIvZHJpdmVycy9tZC9yYWlkNS5jDQo+PiBAQCAtMjM1 Niw2ICsyMzU2LDcgQEAgc3RhdGljIGludCBhZGRfc3RyaXBlX2JpbyhzdHJ1Y3Qgc3RyaXBlX2hl YWQgKnNoLCBzdHJ1Y3QgYmlvICpiaSwgaW50IGRkX2lkeCwgaW4NCj4+ICAJc3RydWN0IGJpbyAq KmJpcDsNCj4+ICAJc3RydWN0IHI1Y29uZiAqY29uZiA9IHNoLT5yYWlkX2NvbmY7DQo+PiAgCWlu dCBmaXJzdHdyaXRlPTA7DQo+PiArCXNlY3Rvcl90IHNlY3RvciA9IGJpLT5iaV9zZWN0b3I7DQo+ PiAgDQo+PiAgCXByX2RlYnVnKCJhZGRpbmcgYmkgYiMlbGx1IHRvIHN0cmlwZSBzIyVsbHVcbiIs DQo+PiAgCQkodW5zaWduZWQgbG9uZyBsb25nKWJpLT5iaV9zZWN0b3IsDQo+PiBAQCAtMjQwNiw3 ICsyNDA3LDcgQEAgc3RhdGljIGludCBhZGRfc3RyaXBlX2JpbyhzdHJ1Y3Qgc3RyaXBlX2hlYWQg KnNoLCBzdHJ1Y3QgYmlvICpiaSwgaW50IGRkX2lkeCwgaW4NCj4+ICAJc3Bpbl91bmxvY2tfaXJx KCZzaC0+c3RyaXBlX2xvY2spOw0KPj4gIA0KPj4gIAlwcl9kZWJ1ZygiYWRkZWQgYmkgYiMlbGx1 IHRvIHN0cmlwZSBzIyVsbHUsIGRpc2sgJWQuXG4iLA0KPj4gLQkJKHVuc2lnbmVkIGxvbmcgbG9u ZykoKmJpcCktPmJpX3NlY3RvciwNCj4+ICsJCSh1bnNpZ25lZCBsb25nIGxvbmcpc2VjdG9yLA0K Pj4gIAkJKHVuc2lnbmVkIGxvbmcgbG9uZylzaC0+c2VjdG9yLCBkZF9pZHgpOw0KPj4gIA0KPj4g IAlpZiAoY29uZi0+bWRkZXYtPmJpdG1hcCAmJiBmaXJzdHdyaXRlKSB7DQo+DQo+DQo+aG93IGFi b3V0IHdlIGp1c3QgbW92ZSB0aGUgc3Bpbl91bmxvY2tfaXJxIGFmdGVyIHRoZSBwcl9kZWJ1Zz8/ DQo+DQphaCEgV2h5IGFyZSB5b3UgdGhpbmsgPyBteSBtZXRob2Qgb25seSBhZGQgYSBwYXJhbWV0 ZXIuDQpCVFcsIGluIGZ1bmMgaGFuZGxlX2ZhaWxlZF9zdHJpcGU6DQo+PmlmICghdGVzdF9iaXQo UjVfV2FudGZpbGwsICZzaC0+ZGV2W2ldLmZsYWdzKSAmJg0KPj4JCSAgICAoIXRlc3RfYml0KFI1 X0luc3luYywgJnNoLT5kZXZbaV0uZmxhZ3MpIHx8DQo+PgkJICAgICAgdGVzdF9iaXQoUjVfUmVh ZEVycm9yLCAmc2gtPmRldltpXS5mbGFncykpKSB7DQo+PgkJCWJpID0gc2gtPmRldltpXS50b3Jl YWQ7DQo+PgkJCXNoLT5kZXZbaV0udG9yZWFkID0gTlVMTDsNCj4+CQkJaWYgKHRlc3RfYW5kX2Ns ZWFyX2JpdChSNV9PdmVybGFwLCAmc2gtPmRldltpXS5mbGFncykpDQo+PgkJCQl3YWtlX3VwKCZj b25mLT53YWl0X2Zvcl9vdmVybGFwKTsNCldoeSB1c2Ugc3RyaXBlX2xvY2sgdG8gcHJvdGVjdCB0 b3JlYWQ/DQoNClRoYW5rcyENCg==