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Tue, 28 Mar 2023 07:39:45 -0400 (EDT) Message-ID: <9817aaa043e9f0ed964bd523773447bd64f6e2c0.camel@xry111.site> Subject: Re: [PATCH] LoongArch: Add kernel address sanitizer support From: Xi Ruoyao To: Qing Zhang , Andrey Ryabinin , Jonathan Corbet , Huacai Chen , Andrew Morton Cc: Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , WANG Xuerui , Jiaxun Yang , kasan-dev@googlegroups.com, linux-doc@vger.kernel.org, linux-mm@kvack.org, loongarch@lists.linux.dev, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Date: Tue, 28 Mar 2023 19:39:42 +0800 In-Reply-To: <20230328111714.2056-1-zhangqing@loongson.cn> References: <20230328111714.2056-1-zhangqing@loongson.cn> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: base64 User-Agent: Evolution 3.48.0 MIME-Version: 1.0 X-Stat-Signature: uebdfwgm8833msc4pjtxcxy9dejys48n X-Rspam-User: X-Rspamd-Queue-Id: D0824A0004 X-Rspamd-Server: rspam06 X-HE-Tag: 1680003595-46767 X-HE-Meta: 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 PvwT+XY9 cTRuIZqQQ1eRPBpF/j9FbQQXvz3zMczMVPJek3sZoSyqXjkT4kGWab+0bJLq37UbykMigTZ5mm/3JeNebam0DTp2lZDYgDaiGE+Yl2tqD4fg4KONlZtjM/GopKz+EFV0c+abg1GgCGoo6mZp2Td96Cnz6B4JKQdrvrf5brlpgFEW4jvtgPFRBtOADVFC613OnrAcCUBx6/miW9NhB1cOfvnzvphcKUN7qj/HLt0pSlQVUUl+AzDu7waLq6zGhYS70/K7fyKZ7WQI0xtxdaaE1Th8Da9DllUkd0EmOfMSGkK+K7X/FJyGFsiJCx83TELkmw3w342qsS7UQWhlfg/zj5w/2YvzIKyUKXn4tMC3a9VcdcfSwGktnatuneXGdOFXP7aXzKOTuLuCAOZdWdcrhVnmQLMrlJfl8frVo X-Bogosity: Ham, tests=bogofilter, spamicity=0.000187, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: T24gVHVlLCAyMDIzLTAzLTI4IGF0IDE5OjE3ICswODAwLCBRaW5nIFpoYW5nIHdyb3RlOgoKLyog c25pcCAqLwoKCj4gLXZvaWQgKiBfX2luaXQgcmVsb2NhdGVfa2VybmVsKHZvaWQpCj4gK3Vuc2ln bmVkIGxvbmcgX19pbml0IHJlbG9jYXRlX2tlcm5lbCh2b2lkKQoKV2h5IHdlIG11c3QgbW9kaWZ5 IHJlbG9jYXRlX2tlcm5lbCBmb3IgS0FTQU4/Cgo+IMKgewo+IMKgwqDCoMKgwqDCoMKgwqB1bnNp Z25lZCBsb25nIGtlcm5lbF9sZW5ndGg7Cj4gwqDCoMKgwqDCoMKgwqDCoHVuc2lnbmVkIGxvbmcg cmFuZG9tX29mZnNldCA9IDA7Cj4gwqDCoMKgwqDCoMKgwqDCoHZvaWQgKmxvY2F0aW9uX25ldyA9 IF90ZXh0OyAvKiBEZWZhdWx0IHRvIG9yaWdpbmFsIGtlcm5lbCBzdGFydCAqLwo+IC3CoMKgwqDC oMKgwqDCoHZvaWQgKmtlcm5lbF9lbnRyeSA9IHN0YXJ0X2tlcm5lbDsgLyogRGVmYXVsdCB0byBv cmlnaW5hbCBrZXJuZWwgZW50cnkgcG9pbnQgKi8KPiDCoMKgwqDCoMKgwqDCoMKgY2hhciAqY21k bGluZSA9IGVhcmx5X2lvcmVtYXAoZndfYXJnMSwgQ09NTUFORF9MSU5FX1NJWkUpOyAvKiBCb290 IGNvbW1hbmQgbGluZSBpcyBwYXNzZWQgaW4gZndfYXJnMSAqLwo+IMKgCj4gwqDCoMKgwqDCoMKg wqDCoHN0cnNjcHkoYm9vdF9jb21tYW5kX2xpbmUsIGNtZGxpbmUsIENPTU1BTkRfTElORV9TSVpF KTsKPiBAQCAtMTkwLDkgKzE4OSw2IEBAIHZvaWQgKiBfX2luaXQgcmVsb2NhdGVfa2VybmVsKHZv aWQpCj4gwqAKPiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoHJlbG9jX29mZnNldCAr PSByYW5kb21fb2Zmc2V0Owo+IMKgCj4gLcKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoC8q IFJldHVybiB0aGUgbmV3IGtlcm5lbCdzIGVudHJ5IHBvaW50ICovCj4gLcKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoGtlcm5lbF9lbnRyeSA9IFJFTE9DQVRFRF9LQVNMUihzdGFydF9rZXJu ZWwpOwo+IC0KPiDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoC8qIFRoZSBjdXJyZW50 IHRocmVhZCBpcyBub3cgd2l0aGluIHRoZSByZWxvY2F0ZWQga2VybmVsICovCj4gwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqBfX2N1cnJlbnRfdGhyZWFkX2luZm8gPSBSRUxPQ0FURURf S0FTTFIoX19jdXJyZW50X3RocmVhZF9pbmZvKTsKPiDCoAo+IEBAIC0yMDQsNyArMjAwLDcgQEAg dm9pZCAqIF9faW5pdCByZWxvY2F0ZV9rZXJuZWwodm9pZCkKPiDCoAo+IMKgwqDCoMKgwqDCoMKg wqByZWxvY2F0ZV9hYnNvbHV0ZShyYW5kb21fb2Zmc2V0KTsKPiDCoAo+IC3CoMKgwqDCoMKgwqDC oHJldHVybiBrZXJuZWxfZW50cnk7Cj4gK8KgwqDCoMKgwqDCoMKgcmV0dXJuIHJhbmRvbV9vZmZz ZXQ7CgotLSAKWGkgUnVveWFvIDx4cnkxMTFAeHJ5MTExLnNpdGU+ClNjaG9vbCBvZiBBZXJvc3Bh Y2UgU2NpZW5jZSBhbmQgVGVjaG5vbG9neSwgWGlkaWFuIFVuaXZlcnNpdHkK