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AJvYcCVc/0wwaS+GK5Tv86cOAORHN3JrdNjpjxdPdlufSYO7GlTKnTvW94giIGfFTwlCUwOCXTux@lists.linux.dev X-Gm-Message-State: AOJu0Yxe6ctylRq2yhaPR0NdjDWjePys82mr/RQX5b2yA+YWv4vb1zLG icfNwI2xkgMqsAM2D7nVPFV2jQ2YZxcjUmJURJk52HsaKyeH6jH5HBPRJQIzIpYwCyIZQMKFd9l N7avr1no67HWr3wxQ5lSCGQN4HctY9DVioY6CA+RF X-Gm-Gg: ASbGncvbdFNG6q1uDE92SUeyXrUKMx9tf/+PeDUPbXQItZbMm72IbKSv/jPArgymEj7 iN1RubcGwyZbDOqIPWmhwg3FXKBw2KXBPATrxpxDto1p1IbOsc6IH2KDNlXZS+mD+sOgKpuK6o+ svElPeOkgqi8lDXgjZInVdoxfK0Jq4Jec+29jY8xWWkz+3lur/E6z6Zf9JsSEhn26UnzXPO1SwJ JQtv2HMoISkagj8koy+o56NjsXirJDwvP8DAYlh8GenyfiAMAuvU247imfjG4vvWGzST2CP0XHb veq2Mt4GhHE6IcswzrWmRjDh4A== X-Google-Smtp-Source: AGHT+IH4F7Ckq32jrbiUxtB1JJ5uFrJqHGgUMRdrFl5ONAv3USRRzhM1TtECqM3yfM33Ue560sqRvq2+UhD4VMC4pSM= X-Received: by 2002:a05:6214:e42:b0:880:51ab:a3e3 with SMTP id 6a1803df08f44-882387621d9mr168741746d6.67.1762851793588; Tue, 11 Nov 2025 01:03:13 -0800 (PST) Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <0a21096d806eafa679798b9844ec33bf8a5499a4.1761763681.git.m.wieczorretman@pm.me> In-Reply-To: <0a21096d806eafa679798b9844ec33bf8a5499a4.1761763681.git.m.wieczorretman@pm.me> From: Alexander Potapenko Date: Tue, 11 Nov 2025 10:02:36 +0100 X-Gm-Features: AWmQ_bncs5LVtJN1ReProGRqJJIZk54xNH4kh3rOCX8uWFHvQkLT6YYoepdGREs Message-ID: Subject: Re: [PATCH v6 16/18] arm64: Unify software tag-based KASAN inline recovery path To: Maciej Wieczor-Retman Cc: xin@zytor.com, peterz@infradead.org, kaleshsingh@google.com, kbingham@kernel.org, akpm@linux-foundation.org, nathan@kernel.org, ryabinin.a.a@gmail.com, dave.hansen@linux.intel.com, bp@alien8.de, morbo@google.com, jeremy.linton@arm.com, smostafa@google.com, kees@kernel.org, baohua@kernel.org, vbabka@suse.cz, justinstitt@google.com, wangkefeng.wang@huawei.com, leitao@debian.org, jan.kiszka@siemens.com, fujita.tomonori@gmail.com, hpa@zytor.com, urezki@gmail.com, ubizjak@gmail.com, ada.coupriediaz@arm.com, nick.desaulniers+lkml@gmail.com, ojeda@kernel.org, brgerst@gmail.com, elver@google.com, pankaj.gupta@amd.com, mark.rutland@arm.com, trintaeoitogc@gmail.com, jpoimboe@kernel.org, thuth@redhat.com, pasha.tatashin@soleen.com, dvyukov@google.com, jhubbard@nvidia.com, catalin.marinas@arm.com, yeoreum.yun@arm.com, mhocko@suse.com, lorenzo.stoakes@oracle.com, samuel.holland@sifive.com, vincenzo.frascino@arm.com, bigeasy@linutronix.de, surenb@google.com, ardb@kernel.org, Liam.Howlett@oracle.com, nicolas.schier@linux.dev, ziy@nvidia.com, kas@kernel.org, tglx@linutronix.de, mingo@redhat.com, broonie@kernel.org, corbet@lwn.net, andreyknvl@gmail.com, maciej.wieczor-retman@intel.com, david@redhat.com, maz@kernel.org, rppt@kernel.org, will@kernel.org, luto@kernel.org, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, linux-kbuild@vger.kernel.org, linux-mm@kvack.org, llvm@lists.linux.dev, linux-doc@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Wed, Oct 29, 2025 at 9:10=E2=80=AFPM Maciej Wieczor-Retman wrote: > > From: Maciej Wieczor-Retman > > To avoid having a copy of a long comment explaining the intricacies of > the inline KASAN recovery system and issues for every architecture that > uses the software tag-based mode, a unified kasan_die_unless_recover() > function was added. > > Use kasan_die_unless_recover() in the kasan brk handler to cleanup the > long comment, that's kept in the non-arch KASAN code. > > Signed-off-by: Maciej Wieczor-Retman > Acked-by: Catalin Marinas Acked-by: Alexander Potapenko