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[198.0.35.241]) by smtp.gmail.com with ESMTPSA id y22-20020a056a00039600b00692754580f0sm1888588pfs.187.2023.11.14.19.03.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Nov 2023 19:03:39 -0800 (PST) Date: Tue, 14 Nov 2023 19:03:38 -0800 From: Kees Cook To: "Gustavo A. R. Silva" Cc: Jean Delvare , Guenter Roeck , Joel Stanley , Andrew Jeffery , linux-hwmon@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH v2][next] hwmon: (aspeed-pwm-tacho) Fix -Wstringop-overflow warning in aspeed_create_fan_tach_channel() Message-ID: <202311141902.A5AE1300@keescook> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231114_190343_799751_341B59D6 X-CRM114-Status: GOOD ( 16.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gVHVlLCBOb3YgMTQsIDIwMjMgYXQgMDE6NTM6MDhQTSAtMDYwMCwgR3VzdGF2byBBLiBSLiBT aWx2YSB3cm90ZToKPiBCYXNlZCBvbiB0aGUgZG9jdW1lbnRhdGlvbiBiZWxvdywgdGhlIG1heGlt dW0gbnVtYmVyIG9mIEZhbiB0YWNoCj4gY2hhbm5lbHMgaXMgMTY6Cj4gCj4gRG9jdW1lbnRhdGlv bi9kZXZpY2V0cmVlL2JpbmRpbmdzL2h3bW9uL2FzcGVlZC1wd20tdGFjaG8udHh0OjQ1Ogo+ICA0 NSAtIGFzcGVlZCxmYW4tdGFjaC1jaCA6IHNob3VsZCBzcGVjaWZ5IHRoZSBGYW4gdGFjaCBpbnB1 dCBjaGFubmVsLgo+ICA0NiAgICAgICAgICAgICAgICAgaW50ZWdlciB2YWx1ZSBpbiB0aGUgcmFu Z2UgMCB0aHJvdWdoIDE1LCB3aXRoIDAgaW5kaWNhdGluZwo+ICA0NyAgICAgICAgICAgICAgICAg RmFuIHRhY2ggY2hhbm5lbCAwIGFuZCAxNSBpbmRpY2F0aW5nIEZhbiB0YWNoIGNoYW5uZWwgMTUu Cj4gIDQ4ICAgICAgICAgICAgICAgICBBdCBsZWFzdCBvbmUgRmFuIHRhY2ggaW5wdXQgY2hhbm5l bCBpcyByZXF1aXJlZC4KPiAKPiBIb3dldmVyLCB0aGUgY29tcGlsZXIgZG9lc24ndCBrbm93IHRo YXQsIGFuZCBsZWdpdGltYWx5IHdhcm5zIGFib3V0IGEgcG90ZW50aWFsCj4gb3ZlcndyaXRlIGlu IGFycmF5IGB1OCBmYW5fdGFjaF9jaF9zb3VyY2VbMTZdYCBpbiBgc3RydWN0IGFzcGVlZF9wd21f dGFjaG9fZGF0YWAsCj4gaW4gY2FzZSBgaW5kZXhgIHRha2VzIGEgdmFsdWUgb3V0c2lkZSB0aGUg Ym91bmRhcmllcyBvZiB0aGUgYXJyYXk6Cj4gCj4gZHJpdmVycy9od21vbi9hc3BlZWQtcHdtLXRh Y2hvLmM6Cj4gMTc5IHN0cnVjdCBhc3BlZWRfcHdtX3RhY2hvX2RhdGEgewo+IC4uLgo+IDE4NCAg ICAgICAgIGJvb2wgZmFuX3RhY2hfcHJlc2VudFsxNl07Cj4gLi4uCj4gMTkzICAgICAgICAgdTgg ZmFuX3RhY2hfY2hfc291cmNlWzE2XTsKPiAxOTYgfTsKPiAKPiBJbiBmdW5jdGlvbiDigJhhc3Bl ZWRfY3JlYXRlX2Zhbl90YWNoX2NoYW5uZWzigJksCj4gICAgIGlubGluZWQgZnJvbSDigJhhc3Bl ZWRfY3JlYXRlX2ZhbuKAmSBhdCBkcml2ZXJzL2h3bW9uL2FzcGVlZC1wd20tdGFjaG8uYzo4Nzc6 MiwKPiAgICAgaW5saW5lZCBmcm9tIOKAmGFzcGVlZF9wd21fdGFjaG9fcHJvYmXigJkgYXQgZHJp dmVycy9od21vbi9hc3BlZWQtcHdtLXRhY2hvLmM6OTM2Ojk6Cj4gZHJpdmVycy9od21vbi9hc3Bl ZWQtcHdtLXRhY2hvLmM6NzUxOjQ5OiB3YXJuaW5nOiB3cml0aW5nIDEgYnl0ZSBpbnRvIGEgcmVn aW9uIG9mIHNpemUgMCBbLVdzdHJpbmdvcC1vdmVyZmxvdz1dCj4gICA3NTEgfCAgICAgICAgICAg ICAgICAgcHJpdi0+ZmFuX3RhY2hfY2hfc291cmNlW2luZGV4XSA9IHB3bV9zb3VyY2U7Cj4gICAg ICAgfCAgICAgICAgICAgICAgICAgfn5+fn5+fn5+fn5+fn5+fn5+fn5+fn5+fn5+fn5+fn5efn5+ fn5+fn5+fn4KPiBkcml2ZXJzL2h3bW9uL2FzcGVlZC1wd20tdGFjaG8uYzogSW4gZnVuY3Rpb24g 4oCYYXNwZWVkX3B3bV90YWNob19wcm9iZeKAmToKPiBkcml2ZXJzL2h3bW9uL2FzcGVlZC1wd20t dGFjaG8uYzoxOTM6MTI6IG5vdGU6IGF0IG9mZnNldCBbNDgsIDI1NV0gaW50byBkZXN0aW5hdGlv biBvYmplY3Qg4oCYZmFuX3RhY2hfY2hfc291cmNl4oCZIG9mIHNpemUgMTYKPiAgIDE5MyB8ICAg ICAgICAgdTggZmFuX3RhY2hfY2hfc291cmNlWzE2XTsKPiAgICAgICB8ICAgICAgICAgICAgXn5+ fn5+fn5+fn5+fn5+fn5+Cj4gCj4gRml4IHRoaXMgYnkgc2FuaXR5IGNoZWNraW5nIGBpbmRleGAg YmVmb3JlIHVzaW5nIGl0IHRvIGluZGV4IGFycmF5cyBvZgo+IHNpemUgMTYgZWxlbWVudHMgaW4g YHN0cnVjdCBhc3BlZWRfcHdtX3RhY2hvX2RhdGFgLiBBbHNvLCBwYXNzIGBkZXZgIGFzCj4gYXJn dW1lbnQgdG8gZnVuY3Rpb24gYGFzcGVlZF9jcmVhdGVfZmFuX3RhY2hfY2hhbm5lbCgpYCwgYW5k IGFkZCBhbiBlcnJvcgo+IG1lc3NhZ2UgaW4gY2FzZSBgaW5kZXhgIGlzIG91dC1vZi1ib3VuZHMs IGluIHdoaWNoIGNhc2UgcmV0dXJuIGAtRUlOVkFMYC4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBHdXN0 YXZvIEEuIFIuIFNpbHZhIDxndXN0YXZvYXJzQGtlcm5lbC5vcmc+CgpUaGFua3MgZm9yIHRoZSB2 MiEgVGhpcyBsb29rcyBnb29kOyBpdCdzIGFibGUgdG8gcGFzcyBiYWNrIHRoZSBlcnJvcgpub3cu CgpSZXZpZXdlZC1ieTogS2VlcyBDb29rIDxrZWVzY29va0BjaHJvbWl1bS5vcmc+CgotLSAKS2Vl cyBDb29rCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwps aW51eC1hcm0ta2VybmVsIG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJh ZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51 eC1hcm0ta2VybmVsCg==