From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 BDE5A2459C5; Tue, 29 Apr 2025 17:57:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745949436; cv=none; b=geHxIvZ3fyEE2PzlgJfK+nlq/2cEyhlQ91991OJcdUHqx7ELmLMDYYsd0Ch24mPw6RC50WnCRQQuG9MDWz/DRDERwgwYYcFiLawGI8E0L2hPJ+MZUvUUAgsikI7L1ft4+uvoMaE2rwTEIErUI25g4g/j8n1UDaSknNr3UazzVkQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745949436; c=relaxed/simple; bh=lcfeS8NqzUnPya10mc++yo+EUu9GhAF+yHF99f4am/c=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=KozjCltoDtFYXHQ8QrfrtQtr7IE7FHS6VnONUc6uf99o3Km7XWLtMzQVgEus04sZ2mPCRnnl8y+YUXb30Oc2lXk5XDG4Ye+lGoAxa13q4EDW9X/Hx3tHF2JKHD4JulEsBp1s45obrqAuH7qkAsRKIM6tPoM9/xNv6x3ruyb3D2k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=R03P4MFm; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="R03P4MFm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3B51AC4CEE3; Tue, 29 Apr 2025 17:57:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1745949436; bh=lcfeS8NqzUnPya10mc++yo+EUu9GhAF+yHF99f4am/c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=R03P4MFmOAK6bDhiBOHAVNGzZONHAQSytzFi02CL/hP81luTaHNthJPwl3LnKhIEz C22sueB8nRcUlY3ZAWGbTy7iqzk8HKX25sfUF6AkXvVWJKkUqvjXj/tUNy0iB03A+i zHSqFcb1R78JomNYntZToL2bO7j8ekEXjtkKp/QU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, stable , Fedor Pchelkin , Peter Chen Subject: [PATCH 5.15 311/373] usb: chipidea: ci_hdrc_imx: fix usbmisc handling Date: Tue, 29 Apr 2025 18:43:08 +0200 Message-ID: <20250429161135.902203607@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250429161123.119104857@linuxfoundation.org> References: <20250429161123.119104857@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Fedor Pchelkin commit 4e28f79e3dffa52d327b46d1a78dac16efb5810b upstream. usbmisc is an optional device property so it is totally valid for the corresponding data->usbmisc_data to have a NULL value. Check that before dereferencing the pointer. Found by Linux Verification Center (linuxtesting.org) with Svace static analysis tool. Fixes: 74adad500346 ("usb: chipidea: ci_hdrc_imx: decrement device's refcount in .remove() and in the error path of .probe()") Cc: stable Signed-off-by: Fedor Pchelkin Acked-by: Peter Chen Link: https://lore.kernel.org/r/20250316102658.490340-2-pchelkin@ispras.ru Signed-off-by: Greg Kroah-Hartman --- drivers/usb/chipidea/ci_hdrc_imx.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -509,7 +509,8 @@ disable_hsic_regulator: cpu_latency_qos_remove_request(&data->pm_qos_req); data->ci_pdev = NULL; err_put: - put_device(data->usbmisc_data->dev); + if (data->usbmisc_data) + put_device(data->usbmisc_data->dev); return ret; } @@ -533,7 +534,8 @@ static void ci_hdrc_imx_remove(struct pl if (data->hsic_pad_regulator) regulator_disable(data->hsic_pad_regulator); } - put_device(data->usbmisc_data->dev); + if (data->usbmisc_data) + put_device(data->usbmisc_data->dev); } static void ci_hdrc_imx_shutdown(struct platform_device *pdev)