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Tue, 13 Oct 2026 08:18:02 -0700 (PDT) From: Akari Tsuyukusa To: Brian Masney , Jerome Brunet , Matthias Brugger , AngeloGioacchino Del Regno , Yassine Oudjana , Richard Cochran Cc: Chen-Yu Tsai , Bartosz Golaszewski , Kees Cook , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig=20=28The=20Capable=20Hub=29?= , Danilo Krummrich , Nicolas Frattaroli , Bjorn Helgaas , Takashi Sakamoto , Haotian Zhang , Miles Chen , Sam Shih , Daniel Golle , Chun-Jie Chen , Laura Nao , =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?= , linux-clk@vger.kernel.org (open list:COMMON CLK FRAMEWORK), linux-kernel@vger.kernel.org (open list), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Mediatek SoC support), linux-mediatek@lists.infradead.org (moderated list:ARM/Mediatek SoC support), Akari Tsuyukusa , stable@vger.kernel.org, Brian Masney Subject: [PATCH v2 01/35] clk: mediatek: mt2712: Fix memory leak on module removal Date: Wed, 14 Oct 2026 00:17:00 +0900 Message-ID: <20261013151734.3177690-2-akkun11.open@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261013151734.3177690-1-akkun11.open@gmail.com> References: <20261013151734.3177690-1-akkun11.open@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit clk_mt2712_apmixed_probe() in clk-mt2712-apmixedsys.c does not call platform_set_drvdata(), but clk_mt2712_apmixed_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. Fixes: c6368ce86435 ("clk: mediatek: mt2712-apmixedsys: Add .remove() callback for module build") Cc: stable@vger.kernel.org Signed-off-by: Akari Tsuyukusa Reviewed-by: Brian Masney --- Changes in v2: - Capitalize the first letter of the commit message: "fix" -> "Fix" --- drivers/clk/mediatek/clk-mt2712-apmixedsys.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/mediatek/clk-mt2712-apmixedsys.c b/drivers/clk/mediatek/clk-mt2712-apmixedsys.c index 54b18e9f83f8..087cf574bcdc 100644 --- a/drivers/clk/mediatek/clk-mt2712-apmixedsys.c +++ b/drivers/clk/mediatek/clk-mt2712-apmixedsys.c @@ -129,6 +129,8 @@ static int clk_mt2712_apmixed_probe(struct platform_device *pdev) goto unregister_plls; } + platform_set_drvdata(pdev, clk_data); + return 0; unregister_plls: -- 2.56.0