From nobody Sun Feb 8 17:04:35 2026 Received: from unicom145.biz-email.net (unicom145.biz-email.net [210.51.26.145]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CCF6C14A82; Mon, 7 Apr 2025 09:20:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.51.26.145 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744017627; cv=none; b=WfUEsIKQR8Ctom8wX6qq7cJDajdlw+gyIcHGTdMjmgzY8ezj80Lh1ZBLgx+dAARLGE1ywSTtil/Kp08X1LCxZzpb8OBVpp246otRWP0dnJsb07wRXQr5fDeC1lxsEOGD0TzP60kiOr4rP9O3EUyWhuy1nzAKxsVaJEJBVP3I7BE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744017627; c=relaxed/simple; bh=CPl8INMgGOzAvADQEx3BjbU2JRCbAKK6DKHGg6oiJ6w=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=r6x2AYcxe7lcmBrMhmAmcZW9DCIQGPDVFeSKwCp9JIO9UBzLbURPHFkiDbV+/KeO8JPsnXkKLY6yzIAIjXumOmi8RTev9SvKozc2bjxxfSZZeh9KXJff8WEgsQWnwftAMvcBDtunu43Yp7DhMvkdNWr/7TOnQkt/1MwLqD9vBJ8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=inspur.com; spf=pass smtp.mailfrom=inspur.com; arc=none smtp.client-ip=210.51.26.145 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=inspur.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=inspur.com Received: from jtjnmail201606.home.langchao.com by unicom145.biz-email.net ((D)) with ASMTP (SSL) id 202504071720120934; Mon, 07 Apr 2025 17:20:12 +0800 Received: from locahost.localdomain.com (10.94.5.217) by jtjnmail201606.home.langchao.com (10.100.2.6) with Microsoft SMTP Server id 15.1.2507.39; Mon, 7 Apr 2025 17:20:11 +0800 From: Charles Han To: , , CC: , , Charles Han Subject: [PATCH] clk: davinci: Add NULL check in davinci_lpsc_clk_register Date: Mon, 7 Apr 2025 17:20:10 +0800 Message-ID: <20250407092010.6243-1-hanchunchao@inspur.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable tUid: 2025407172012fc51091f3a1ce8619daa09151724fcbe X-Abuse-Reports-To: service@corp-email.com Abuse-Reports-To: service@corp-email.com X-Complaints-To: service@corp-email.com X-Report-Abuse-To: service@corp-email.com Content-Type: text/plain; charset="utf-8" devm_kasprintf() can return a NULL pointer on failure,but this returned value in davinci_lpsc_clk_register() is not checked. Add NULL check in davinci_lpsc_clk_register(), to handle kernel NULL pointer dereference error. Fixes: c6ed4d734bc7 ("clk: davinci: New driver for davinci PSC clocks") Signed-off-by: Charles Han --- drivers/clk/davinci/psc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c index b48322176c21..872fed50dece 100644 --- a/drivers/clk/davinci/psc.c +++ b/drivers/clk/davinci/psc.c @@ -277,6 +277,11 @@ davinci_lpsc_clk_register(struct device *dev, const ch= ar *name, =20 lpsc->pm_domain.name =3D devm_kasprintf(dev, GFP_KERNEL, "%s: %s", best_dev_name(dev), name); + if (!lpsc->pm_domain.name) { + kfree(lpsc); + return ERR_PTR(-ENOMEM); + } + lpsc->pm_domain.attach_dev =3D davinci_psc_genpd_attach_dev; lpsc->pm_domain.detach_dev =3D davinci_psc_genpd_detach_dev; lpsc->pm_domain.flags =3D GENPD_FLAG_PM_CLK; --=20 2.43.0