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Wed, 24 Dec 2025 04:26:15 -0800 (PST) Received: from [172.22.153.25] ([80.93.240.67]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47be3a204e9sm132695265e9.2.2025.12.24.04.26.13 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 24 Dec 2025 04:26:14 -0800 (PST) Message-ID: Date: Wed, 24 Dec 2025 13:25:50 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 00/12] mm/kasan: make kasan=on|off work for all three modes To: Baoquan He , Andrey Konovalov Cc: linux-mm@kvack.org, glider@google.com, dvyukov@google.com, vincenzo.frascino@arm.com, akpm@linux-foundation.org, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, elver@google.com, sj@kernel.org, lorenzo.stoakes@oracle.com, snovitoll@gmail.com, christophe.leroy@csgroup.eu References: <20251128033320.1349620-1-bhe@redhat.com> Content-Language: en-US From: Andrey Ryabinin In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Stat-Signature: s6cnwk1zjn47q4b4y7zhuohn1hnsyb77 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 1236FA0016 X-Rspam-User: X-HE-Tag: 1766579176-657819 X-HE-Meta: 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 jqquSKec AYNElXjFLQSTM/rgtph13mWFs2N8ilL80sXaH3BnGc1+9tTHOQNB8ln76HMSndFbQ5oLxSyAM1yELqvFtemvo+DA4+bHUp8RGLFODUyyktyYXC3nHktUTpg4yXzz3bTS0dny5K77vc1/+d4PgowBVnKIE58ypoNHvGXY2jvcGMN8i3vxu5CEPIkbo16JR+czrnV6ATBU40g7edV/EIyrx95s7kqZ8YasM+/TXvXgCHViaDdgEbk7H2MGf2FwHs2/zkO+35H8VfvW/BckDs9nfPuj0D8OVXm/OKKYbSu3/KSug1aKjpANStqCzAPxUKcqwDR2Zj5Jn0jwmLrM/1r4iu2kOLyzTy6uLbcsLKQqe6mJbf/94tkhMi8woQRhcPbZKkmyEwsNanUMSHUK0vJhAjAn9VYR/MJW2pc09eunXh3GEbvhDuJssluLY3glRa8sJKfpnUFFFdaHxOjC9SV17qujetqX3NHWifnO5ptnEkzyMNXI/sCvltyu1WVAO2Wqv/2H2 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 12/24/25 4:28 AM, Baoquan He wrote: > Hi Andrey, > > On 12/04/25 at 05:38pm, Andrey Konovalov wrote: >> On Fri, Nov 28, 2025 at 4:33 AM Baoquan He wrote: >>> > ...snip... >>> Testing: >>> ======== >>> - Testing on x86_64 and arm64 for generic mode passed when kasan=on or >>> kasan=off. >>> >>> - Testing on arm64 with sw_tags mode passed when kasan=off is set. But >>> when I tried to test sw_tags on arm64, the system bootup failed. It's >>> not introduced by my patchset, the original code has the bug. I have >>> reported it to upstream. >>> - System is broken in KASAN sw_tags mode during bootup >>> - https://lore.kernel.org/all/aSXKqJTkZPNskFop@MiWiFi-R3L-srv/T/#u >> >> This will hopefully be fixed soon, so you'll be able to test. > > Do you have the patch link of the fix on sw_tags breakage? I think this one should fix it - https://lkml.kernel.org/r/cover.1765978969.git.m.wieczorretman@pm.me > > I am organizing patches and testing them for reposting, but still see > the sw_tags breakage during boot on arm64 system. If you have the > pointer about the fix, I can grab the possible unmature code change to > make sw_tags mode work to finish my testing. > > Thanks > Baoquan >