From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 892D14418DB; Tue, 21 Jul 2026 22:17:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784672270; cv=none; b=RVIBrwjdFUeXYp4ZzN8jbgo6Pi9OwbayVSZ/HNo1Ly6RJjbOkU2nSMkSRYuTNEEfyrptc71d3r36C83Nt06euOfVrWrH6h3VZZJrYY1K818wZ+k7klN8sHQY+2YnxEGemHJf3oScRM59vuQ2xIrp1POwvon1NGFAYvvyZ4Phx80= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784672270; c=relaxed/simple; bh=xflnWLQd3T/gTsTzZda0oRi+GTxRIO1K8MkuTBmkJ40=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=s4n1U5X5vG+n9hfoVZvs1VYaEbWNO7TlkaMj4Bt3JS9BQtq4URqLVOCxZuxjAwM9dFCcObX/2yK4SH6UuGQNtqgFugEJvkDCgzoxgo+EZ2MH7Rvzu9MsJsDQ82wfERFDcnDKUsFRoqWBPZyoVyM3B2rYjuUAD8k0oDsBExXQE+A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZfeQyx5p; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ZfeQyx5p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 708AA1F000E9; Tue, 21 Jul 2026 22:17:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784672266; bh=K0IKgKOSig2/8q9zDIAoHZIscQx6Z72NYoRCBTSWIUg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ZfeQyx5pm1UH7rMCbMbxSVTmIj/PSC7ODym1kzrRLkkAlRgCpt8wr/nJSQ5TiSr7o ePhanRcJFB7epY6hwaKROwdae25p2mL7KRIhTMBB0zrv84+87sRx2NGHtXsF1lYsmz KPiIjmwfrCJR+LwszDQ1/a94eMOuf4l0+0zOr9JM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Abdun Nihaal , Thomas Zimmermann , Helge Deller Subject: [PATCH 5.15 560/843] fbdev: metronomefb: fix potential memory leak in metronomefb_probe() Date: Tue, 21 Jul 2026 17:23:15 +0200 Message-ID: <20260721152418.647262979@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260721152405.946368001@linuxfoundation.org> References: <20260721152405.946368001@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev 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: Abdun Nihaal commit 894632b862a39b3fe1cb5de06fbae86225ea64de upstream. The memory allocated for pagerefs in fb_deferred_io_init() is not freed on the error path. Fix it by calling fb_deferred_io_cleanup(). Fixes: 56c134f7f1b5 ("fbdev: Track deferred-I/O pages in pageref struct") Cc: stable@vger.kernel.org Signed-off-by: Abdun Nihaal Reviewed-by: Thomas Zimmermann Signed-off-by: Helge Deller Signed-off-by: Greg Kroah-Hartman --- drivers/video/fbdev/metronomefb.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) --- a/drivers/video/fbdev/metronomefb.c +++ b/drivers/video/fbdev/metronomefb.c @@ -703,12 +703,14 @@ static int metronomefb_probe(struct plat info->flags = FBINFO_FLAG_DEFAULT | FBINFO_VIRTFB; info->fbdefio = &metronomefb_defio; - fb_deferred_io_init(info); + retval = fb_deferred_io_init(info); + if (retval) + goto err_free_irq; retval = fb_alloc_cmap(&info->cmap, 8, 0); if (retval < 0) { dev_err(&dev->dev, "Failed to allocate colormap\n"); - goto err_free_irq; + goto err_fbdefio; } /* set cmap */ @@ -731,6 +733,8 @@ static int metronomefb_probe(struct plat err_cmap: fb_dealloc_cmap(&info->cmap); +err_fbdefio: + fb_deferred_io_cleanup(info); err_free_irq: board->cleanup(par); err_csum_table: