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[14.13.71.96]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-387d20a361asm626710a91.15.2026.07.07.00.49.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jul 2026 00:49:14 -0700 (PDT) From: Akari Tsuyukusa To: Michael Turquette , Stephen Boyd , Brian Masney , Matthias Brugger , AngeloGioacchino Del Regno Cc: linux-clk@vger.kernel.org (open list:COMMON CLK FRAMEWORK), linux-kernel@vger.kernel.org (open list:ARM/Mediatek SoC support), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Mediatek SoC support), linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek SoC support), stable@vger.kernel.org, Chen-Yu Tsai , Miles Chen , Akari Tsuyukusa Subject: [PATCH v2 0/6] clk: mediatek: fix memory leak on module removal Date: Tue, 7 Jul 2026 16:48:29 +0900 Message-ID: <20260707074839.240676-1-akkun11.open@gmail.com> X-Mailer: git-send-email 2.54.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260707_004916_697748_893C2969 X-CRM114-Status: UNSURE ( 8.90 ) 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 Some MediaTek clock drivers do not call platform_set_drvdata() during probe, but their remove callback calls platform_get_drvdata(). This results in platform_get_drvdata() returning NULL, which leads to calling kfree(NULL) in mtk_free_clk_data(NULL). This leaves clk_data unreleased, causing a memory leak. Fix this by calling platform_set_drvdata() during probe. Changes in v2: - Add a newline between platform_set_drvdata() and return (suggested by Brian Masney) - Split the patch per SoC, (also suggested by Brian Masney) - Add "Cc: stable@vger.kernel.org" Link to v1: https://lore.kernel.org/linux-mediatek/20260629142348.273766-1-akkun11.open@gmail.com/T/#u Akari Tsuyukusa (6): clk: mediatek: mt2712: fix memory leak on module removal clk: mediatek: mt6795: fix memory leak on module removal clk: mediatek: mt7622: fix memory leak on module removal clk: mediatek: mt8135: fix memory leak on module removal clk: mediatek: mt8173: fix memory leak on module removal clk: mediatek: mt8192: fix memory leak on module removal drivers/clk/mediatek/clk-mt2712-apmixedsys.c | 2 ++ drivers/clk/mediatek/clk-mt6795-apmixedsys.c | 2 ++ drivers/clk/mediatek/clk-mt6795-infracfg.c | 2 ++ drivers/clk/mediatek/clk-mt6795-pericfg.c | 2 ++ drivers/clk/mediatek/clk-mt7622-apmixedsys.c | 2 ++ drivers/clk/mediatek/clk-mt7622-infracfg.c | 2 ++ drivers/clk/mediatek/clk-mt8135-apmixedsys.c | 2 ++ drivers/clk/mediatek/clk-mt8173-apmixedsys.c | 2 ++ drivers/clk/mediatek/clk-mt8173-infracfg.c | 2 ++ drivers/clk/mediatek/clk-mt8192-apmixedsys.c | 2 ++ 10 files changed, 20 insertions(+) -- 2.54.0