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[129.94.173.199]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3a0d22281f0sm651224a91.1.2026.09.25.10.33.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Sep 2026 10:33:52 -0700 (PDT) From: Weigang He To: Liviu Dudau , Sudeep Holla , Lorenzo Pieralisi Cc: Linus Walleij , Russell King , Lee Jones , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Weigang He Subject: [PATCH 0/2] ARM: vexpress: fix two device_node refcount leaks Date: Sat, 26 Sep 2026 03:32:50 +1000 Message-ID: <20260925173252.933705-1-geoffreyhe2@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260925_103354_687437_9501D838 X-CRM114-Status: UNSURE ( 9.45 ) X-CRM114-Notice: Please train this message. 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The Versatile Express SMP bring-up path leaks two device_node references during boot: - vexpress_flags_set() (mach-versatile/v2m.c) leaks the "arm,vexpress-sysreg" node obtained via of_find_compatible_node(). - vexpress_smp_dt_prepare_cpus() (mach-versatile/platsmp-vexpress.c) leaks the SCU node obtained via of_find_matching_node(). of_iomap() does not take ownership of the node, so each is a one-shot refcount leak with no functional impact. They were introduced by different commits, so they are split into one patch each. The first leak was reported by static analysis (CodeQL); the second was found while reviewing that report. The CodeQL query was synthesized with LLM assistance, and the patches were drafted with LLM assistance; I have reviewed them. Compile-tested only (ARCH=arm multi_v7_defconfig, W=1); I have no Versatile Express hardware. Weigang He (2): ARM: vexpress: fix device_node refcount leak in vexpress_flags_set() ARM: vexpress: fix device_node refcount leak in vexpress_smp_dt_prepare_cpus() arch/arm/mach-versatile/platsmp-vexpress.c | 4 ++-- arch/arm/mach-versatile/v2m.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) base-commit: 165768bb70265b5c38cf0b73fafd75be235f8b14 -- 2.43.0