From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Subject: Re: missing lock in percpu_rwlock? (Was: Re: New Defects reported by Coverity Scan for XenProject) Date: Wed, 3 Feb 2016 12:32:19 +0000 Message-ID: <1454502739.25207.108.camel@citrix.com> References: <56b180c017d5f_214fb5b3143623f@ss1435.mail> <1454496349.25207.54.camel@citrix.com> <56B1DB64.8040402@citrix.com> <1454497213.25207.62.camel@citrix.com> <56B1F0CC.4090708@citrix.com> <56B1F190.8070600@citrix.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <56B1F190.8070600@citrix.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Andrew Cooper , Malcolm Crossley Cc: George Dunlap , Jan Beulich , xen-devel List-Id: xen-devel@lists.xenproject.org T24gV2VkLCAyMDE2LTAyLTAzIGF0IDEyOjI0ICswMDAwLCBBbmRyZXcgQ29vcGVyIHdyb3RlOgo+ IE9uIDAzLzAyLzE2IDEyOjIxLCBBbmRyZXcgQ29vcGVyIHdyb3RlOgo+ID4gT24gMDMvMDIvMTYg MTE6MDAsIElhbiBDYW1wYmVsbCB3cm90ZToKPiA+ID4gT24gV2VkLCAyMDE2LTAyLTAzIGF0IDEw OjUwICswMDAwLCBBbmRyZXcgQ29vcGVyIHdyb3RlOgo+ID4gPiA+IE9uIDAzLzAyLzE2IDEwOjQ1 LCBJYW4gQ2FtcGJlbGwgd3JvdGU6Cj4gPiA+ID4gPiBPbiBUdWUsIDIwMTYtMDItMDIgYXQgMjA6 MjMgLTA4MDAsIHNjYW4tYWRtaW5AY292ZXJpdHkuY29tIHdyb3RlOgo+ID4gPiA+ID4gPiAqIENJ RCAxMzUxMjIzOsKgwqBDb25jdXJyZW50IGRhdGEgYWNjZXNzCj4gPiA+ID4gPiA+IHZpb2xhdGlv bnPCoMKgKE1JU1NJTkdfTE9DSykKPiA+ID4gPiA+ID4gL3hlbi9pbmNsdWRlL3hlbi9zcGlubG9j ay5oOiAzNjIgaW4gX3BlcmNwdV93cml0ZV91bmxvY2soKQo+ID4gPiA+ID4gQ292ZXJpdHkgc2Vl bXMgdG8gdGhpbmsgdGhpcyBpcyBuZXcgaW4gNDFiMGFhNTY5YWRiLi45OTM3NzYzMjY1ZCwKPiA+ ID4gPiA+IHByZXN1bWFibHkgZHVlIHRvIAo+ID4gPiA+ID4gCj4gPiA+ID4gPiBjb21taXQgZjlk ZDQzZGRkYzBhMzFhNDM0M2E1ODA3MjkzNWMxYjVjMGNiYmVlCj4gPiA+ID4gPiBBdXRob3I6IE1h bGNvbG0gQ3Jvc3NsZXkgPG1hbGNvbG0uY3Jvc3NsZXlAY2l0cml4LmNvbT4KPiA+ID4gPiA+IERh dGU6wqDCoMKgRnJpIEphbiAyMiAxNjowNDo0MSAyMDE2ICswMTAwCj4gPiA+ID4gPiAKPiA+ID4g PiA+IMKgwqDCoMKgcndsb2NrOiBhZGQgcGVyLWNwdSByZWFkZXItd3JpdGVyIGxvY2sgaW5mcmFz dHJ1Y3R1cmUKPiA+ID4gPiBFeHBlY3RlZCBiZWhhdmlvdXIuwqDCoHdyaXRlcl9hY3RpdmF0aW5n IGlzIGV4cGVjdGVkIHRvIG9ubHkgYmUKPiA+ID4gPiB3cml0dGVuCj4gPiA+ID4gdW5kZXIgbG9j aywgYnV0IHJlYWQgd2l0aG91dCBsb2NrLgo+ID4gPiBJIHN1cHBvc2UgdGhpcyBpcyBzb21ldGhp bmcgd2Ugc2hvdWxkIGV2ZW50dWFsbHkgbW9kZWw/Cj4gPiBTaG9ydCBvZiBhbm5vdGF0aW5nIHRo ZSBzb3VyY2UgY29kZSB3aXRoIENvdmVyaXR5IGNvbW1lbnRzICh3aGljaCBoYXMKPiA+IGFscmVh ZHkgYmVlbiBvYmplY3RlZCB0byksIEkgZG9uJ3Qgc2VlIGEgd2F5Lgo+ID4gCj4gPiBUaGlzIGlz c3VlIGlzIENvdmVyaXR5IChjb3JyZWN0bHkpIG9ic2VydmluZyB0aGUgYmVoYXZpb3VyIG9mIHRo ZQo+ID4gZnVuY3Rpb24sIGFuZCBjb21pbmcgdG8gdGhlIHdyb25nIGNvbmNsdXNpb24uwqDCoFRo ZSBtb2RlbGxpbmcgZmlsZSBpcwo+ID4gdXNlZCB0byBjb3JyZWN0IHRoZSBpbnRlcnByZXRhdGlv biBvZiB0aGUgYmVoYXZpb3VyIG9mIHRoZSBmdW5jdGlvbi4KPiA+IAo+ID4gPiBXb3VsZCB5b3Ug dHlwaWNhbGx5IG1hcmsgdGhpcyBhcyAiRmFsc2UgcG9zaXRpdmUiIG9yICJJbnRlbnRpb25hbCI/ Cj4gPiBJIHdvdWxkIGVyciBvbiB0aGUgc2lkZSBvZiBJbnRlbnRpb25hbC4KPiA+IAo+ID4gVGhl IGFuYWx5c2lzIG9mIHRoZSBpc3N1ZSB3YXMgY29ycmVjdDsgdGhhdCBkYXRhIHdhcyBhY2Nlc3Nl ZCBib3RoIHdpdGgKPiA+IGFuZCB3aXRob3V0IHRoZSBsb2NrLCBhbmQgdGhhdCB0aGlzIHVzdWFs bHkgbWVhbnMgYSBkYXRhIHJhY2UKPiA+IGNvbmRpdGlvbi4KPiA+IAo+ID4gSW4gdGhpcyBjYXNl LCBpdCBpcyBhIGRlbGliZXJhdGUgYWxnb3JpdGhtIGRlY2lzaW9uIHRvIGhhdmUgdGhlIGRhdGEK PiA+IGFjY2VzcyBsaWtlIHRoaXMuCgpEb25lLiBJIGxpbmtlZCB0byB5b3VyIGV4cGxhbmF0aW9u IGluIHRoZSBjb21tZW50cy4KCj4gPiAKPiA+ID4gSSBqdXN0IG1hcmtlZCBhIGNvdXBsZSBvZiBs aWJ4bCBvbmVzIGFib3V0IHRha2luZyBjdHgtPmxvY2sgKHdoaWNoIGlzCj4gPiA+IHJlY3Vyc2l2 ZSkgdHdpY2UgYXMgIkZhbHNlIHBvc2l0aXZlIiwgYnV0IHBlcmhhcHMgIkludGVudGlvbmFsIiBp cwo+ID4gPiB0aGUKPiA+ID4gY29ycmVjdCBkZXNpZ25hdGlvbiB0aGVyZT8KPiA+IFRoZXJlIGlz IGFuIGF0dGVtcHQgdG8gbW9kZWwgdGhpcyBpbiB0aGUgbW9kZWwgZmlsZSwgYnV0IGl0IGNsZWFy bHkKPiA+IGlzbid0IHRha2luZy4KPiAKPiAoSSBtZWFudCB0byBzYXkgYXMgd2VsbCkKPiAKPiBU aGlzIEkgd291bGQgZXJyIGluIHRoZSBzaWRlIG9mIGZhbHNlIHBvc2l0aXZlLCB3aXRoICJtb2Rl bGxpbmcKPiByZXF1aXJlZCIgYXMgYSByZWFzb24uwqDCoFRoZSBsb2NrIGlzIGEgcmVjdXJzaXZl IGxvY2sgYW5kIENvdmVyaXR5IHNob3VsZAo+IGJlIGFibGUgdG8gc3BvdCB0aGlzIGZhY3QsIGJ1 dCBjYW4ndCBmb3Igc29tZSByZWFzb24uCgpHb29kIGlkZWEsIEknbGwgdXBkYXRlIHRob3NlLgoK SWFuCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4t ZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZlbEBsaXN0cy54ZW4ub3JnCmh0dHA6Ly9saXN0cy54 ZW4ub3JnL3hlbi1kZXZlbAo=