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 2C1C92C11DE; Sun, 1 Mar 2026 01:39:03 +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=1772329143; cv=none; b=Z/uQj56F7/5aQZ7+KfKZKVWaUkaTFfPAFmc/CxgNb/6PhDPH7LozJXM4H0OOdnakEDppNQqqOJfBQ7Rt1i+wS3cuM5/d5vKqhACUUpd5dEn0EWTRyVTRnZkaaq5kN0UzfAXTBpOHuX0J6k2oxtUkhE4HZ6HpbMSPOcDZ96FHw1I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772329143; c=relaxed/simple; bh=2TmsSSZ3vjHYwDrN+G/Ov5So2odCO2s4p9+JMKFePgw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=JsqX3MhHCihz1AEBQnlvkGrud+F9dZDtBMaYoPqoV2qwR2gKryHG7aWn+UMWuVRSK5LE+aJ/hQxsQL+UusT+eje0q64nM5hVU4f2eRtM9kXeq/IJQTvgUa5Hd4Vripf7LjY0agu9+Y3enqPXkLmN93mnov4sbnm7I1fz+LnRflI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ayGixleZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ayGixleZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 35A06C19421; Sun, 1 Mar 2026 01:39:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772329143; bh=2TmsSSZ3vjHYwDrN+G/Ov5So2odCO2s4p9+JMKFePgw=; h=From:To:Cc:Subject:Date:From; b=ayGixleZSwM/+/YppYCk7RAiFcBaSSVYplB86gdYbAVVh9kcv4AZ7DnrfGBNERc0o 7EuXqBTTWrsaiPxZLlP/MR+/yGQdXjZ+/KKvubhWYg3qvzxTcdvnZ+GosyfHL+xXuZ IataMPoKYHlaitw/tiBaSkS9Q4G62IIwgwbuqrWvAoEvxARDtJTrVr0lPv6Dc66sfc 8SZqb8KRdl3P8FdqIp6bLYYfDAGWgC8r4rATnGWhOjOx0V1wCvn0Hb9ETa92ZQ9PtN 6+VDD/dKqXqpaZWsOnrUQMC1yxjy1J8sk+if0GaMICl/mg1Hza6mn9T8watfjEMYDv zwZda7atC/1SQ== From: Sasha Levin To: stable@vger.kernel.org, a.vatoropin@crpt.ru Cc: Helge Deller , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: FAILED: Patch "fbcon: check return value of con2fb_acquire_newinfo()" failed to apply to 6.6-stable tree Date: Sat, 28 Feb 2026 20:39:00 -0500 Message-ID: <20260301013900.1699831-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Hint: ignore X-stable: review Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Thanks, Sasha ------------------ original commit in Linus's tree ------------------ >From 011a0502801c8536f64141a2b61362c14f456544 Mon Sep 17 00:00:00 2001 From: Andrey Vatoropin Date: Wed, 17 Dec 2025 09:11:05 +0000 Subject: [PATCH] fbcon: check return value of con2fb_acquire_newinfo() If fbcon_open() fails when called from con2fb_acquire_newinfo() then info->fbcon_par pointer remains NULL which is later dereferenced. Add check for return value of the function con2fb_acquire_newinfo() to avoid it. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: d1baa4ffa677 ("fbcon: set_con2fb_map fixes") Cc: stable@vger.kernel.org Signed-off-by: Andrey Vatoropin Signed-off-by: Helge Deller --- drivers/video/fbdev/core/fbcon.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/core/fbcon.c b/drivers/video/fbdev/core/fbcon.c index 34ea14412ace1..36e380797a9e4 100644 --- a/drivers/video/fbdev/core/fbcon.c +++ b/drivers/video/fbdev/core/fbcon.c @@ -1068,7 +1068,8 @@ static void fbcon_init(struct vc_data *vc, bool init) return; if (!info->fbcon_par) - con2fb_acquire_newinfo(vc, info, vc->vc_num); + if (con2fb_acquire_newinfo(vc, info, vc->vc_num)) + return; /* If we are not the first console on this fb, copy the font from that console */ -- 2.51.0