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R. Silva" Subject: Re: [PATCH] mtd: physmap: physmap-bt1-rom: Fix unintentional stack access Message-ID: <20210212151216.31a09ad1@xps13> In-Reply-To: <20210212104022.GA242669@embeddedor> References: <20210212104022.GA242669@embeddedor> Organization: Bootlin X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210212_091224_521967_B3DA16F0 X-CRM114-Status: GOOD ( 19.62 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Vignesh Raghavendra , Richard Weinberger , linux-kernel@vger.kernel.org, Serge Semin , linux-mtd@lists.infradead.org, linux-hardening@vger.kernel.org, Kees Cook Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org SGkgR3VzdGF2bywKCiJHdXN0YXZvIEEuIFIuIFNpbHZhIiA8Z3VzdGF2b2Fyc0BrZXJuZWwub3Jn PiB3cm90ZSBvbiBGcmksIDEyIEZlYiAyMDIxCjA0OjQwOjIyIC0wNjAwOgoKPiBDYXN0ICZkYXRh IHRvIChjaGFyICopIGluIG9yZGVyIHRvIGF2b2lkIHVuaW50ZW50aW9uYWxseSBhY2Nlc3NpbmcK PiB0aGUgc3RhY2suCj4gCj4gTm90aWNlIHRoYXQgZGF0YSBpcyBvZiB0eXBlIHUzMiwgc28gYW55 IGluY3JlbWVudCB0byAmZGF0YQo+IHdpbGwgYmUgaW4gdGhlIG9yZGVyIG9mIDQtYnl0ZSBjaHVu a3MsIGFuZCB0aGlzIHBpZWNlIG9mIGNvZGUKPiBpcyBhY3R1YWxseSBpbnRlbmRlZCB0byBiZSBh IGJ5dGUgb2Zmc2V0LgoKSSBkb24ndCBoYXZlIHRoZSBzYW1lIHJlYWRpbmcuIEkgZG9uJ3Qgc2F5 IHRoYXQgQ292ZXJpdHkgcmVwb3J0IGlzCndyb25nLCBidXQgbGV0J3MgZGlzY3VzcyB0aGlzIGEg Yml0IGZ1cnRoZXIuCgpHaXZlbiB0aGF0ICZkYXRhIGlzIG9mIHR5cGUgdTMyICosIHlvdSBzYXkg dGhhdCAiJmRhdGEgKyBzaGlmdCIKcHJvZHVjZXMgaW5jcmVtZW50cyBvZiA0LWJ5dGVzLCBpZS4g d2Ugd291bGQgYWNjZXNzICImZGF0YSArIDQgKgpzaGlmdCI/IEJlY2F1c2UgSSBkb24ndCB0aGlu ayB0aGlzIGlzIHRoZSBjYXNlIChhZ2FpbiwgSSBtYXkgYmUgd3JvbmcpLgoKSSdtIHN1cmUgdGhp cyB3b3VsZCBiZSB0aGUgY2FzZSBpZiB3ZSBkZXJlZmVyZW5jZWQgZGF0YSBsaWtlCmRhdGFbc2hp ZnRdIHRob3VnaCwgYnV0IGluIHRoaXMgY2FzZSBJIGRvbid0IHNlZSB3aGF0IHRoaXMgY2FzdCBp cwpmaXhpbmcuIENhbiB5b3UgZW5saWdodGVuIG1lPwoKQ291bGQgdGhlIG91dC1vZi1ib3VuZHMg d2FybmluZyBjb21lIGZyb20gdGhlIGZhY3QgdGhhdCBzaGlmdAptaWdodCBiZSBiaWdnZXIgdGhh biB0aGUgZGF0YSBhcnJheSBzcHJlYWQ/Cgo+IEZpeGVzOiBiM2U3OWU3NjgyZTAgKCJtdGQ6IHBo eXNtYXA6IEFkZCBCYWlrYWwtVDEgcGh5c2ljYWxseSBtYXBwZWQgUk9NIHN1cHBvcnQiKQo+IEFk ZHJlc3Nlcy1Db3Zlcml0eS1JRDogMTQ5Nzc2NSAoIk91dC1vZi1ib3VuZHMgYWNjZXNzIikKPiBD Yzogc3RhYmxlQHZnZXIua2VybmVsLm9yZwo+IFNpZ25lZC1vZmYtYnk6IEd1c3Rhdm8gQS4gUi4g U2lsdmEgPGd1c3Rhdm9hcnNAa2VybmVsLm9yZz4KPiAtLS0KPiAgZHJpdmVycy9tdGQvbWFwcy9w aHlzbWFwLWJ0MS1yb20uYyB8IDIgKy0KPiAgMSBmaWxlIGNoYW5nZWQsIDEgaW5zZXJ0aW9uKCsp LCAxIGRlbGV0aW9uKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvbXRkL21hcHMvcGh5c21h cC1idDEtcm9tLmMgYi9kcml2ZXJzL210ZC9tYXBzL3BoeXNtYXAtYnQxLXJvbS5jCj4gaW5kZXgg YTM1NDUwMDAyMjg0Li41ODc4MmNmYWY3MWMgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9tdGQvbWFw cy9waHlzbWFwLWJ0MS1yb20uYwo+ICsrKyBiL2RyaXZlcnMvbXRkL21hcHMvcGh5c21hcC1idDEt cm9tLmMKPiBAQCAtNzksNyArNzksNyBAQCBzdGF0aWMgdm9pZCBfX3hpcHJhbSBidDFfcm9tX21h cF9jb3B5X2Zyb20oc3RydWN0IG1hcF9pbmZvICptYXAsCj4gIAlpZiAoc2hpZnQpIHsKPiAgCQlj aHVuayA9IG1pbl90KHNzaXplX3QsIDQgLSBzaGlmdCwgbGVuKTsKPiAgCQlkYXRhID0gcmVhZGxf cmVsYXhlZChzcmMgLSBzaGlmdCk7Cj4gLQkJbWVtY3B5KHRvLCAmZGF0YSArIHNoaWZ0LCBjaHVu ayk7Cj4gKwkJbWVtY3B5KHRvLCAoY2hhciAqKSZkYXRhICsgc2hpZnQsIGNodW5rKTsKPiAgCQlz cmMgKz0gY2h1bms7Cj4gIAkJdG8gKz0gY2h1bms7Cj4gIAkJbGVuIC09IGNodW5rOwoKVGhhbmtz LApNaXF1w6hsCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18KTGludXggTVREIGRpc2N1c3Npb24gbWFpbGluZyBsaXN0Cmh0dHA6Ly9saXN0cy5p bmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtbXRkLwo=