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 2D02C21ABB9; Sun, 1 Mar 2026 01:58:19 +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=1772330300; cv=none; b=OxIBZmq5MdPkHjFgIZutZYRd/5xsJQSb4Mcbp/riJgkkP0qc/G7beQ8ESY2cFO8uMtR4JDIUsY3iycrzECWwqbRm/udZDpOvlKx356G8tQHWLZRrqvVe/ItAgIjCiK7in0ri53UckULSq4LJ7tXj0yr3JmNYt9KG2rc55ODpQCI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772330300; c=relaxed/simple; bh=AKtp90/ZHd1H57rjb2mJa3NqYPtMoZD795MjTLhNYlc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=n6+ZoBJcES/5Suku74KhLdLwVly+4hD5ln+NG1GrU06nM4U4jWB8hjziwXusOlGeSgw1puZQ+ELbUSbAsIMdV1qdzFoXUmsicXwy7oHCJws8a9KQQh3BJLrLxdmoH708NZipaBhg+8VU/jCEDX5LfNYzlT0Ty/v78lwFnxvDG/4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kDjaGxuf; 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="kDjaGxuf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4BDBFC19421; Sun, 1 Mar 2026 01:58:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772330299; bh=AKtp90/ZHd1H57rjb2mJa3NqYPtMoZD795MjTLhNYlc=; h=From:To:Cc:Subject:Date:From; b=kDjaGxuf8KmYWD+NcoRE7LmPveKFNZpQIIfVxgCj8/iRuCOUAZXcl30SCFnVJcGXC A9iWF//SNrWzo8kWHXshtOCX8R49BPGuEqC4e6vFpoJBl5Qfn9dAT0SOiqO047YRbj URxTrdOyPcUNAkCvXtulH8PqiSySqcUOLvNY9J+oUPI7imlAkRcG901nWxQXLcM7eI rA4hDtgp3XyToOYUqjploS2Hic9EqH9IOn1TOWw4cWxSAtjMlnmYtiu/o4onSwHfWA 29lS/74ld5bilf1TDpRrdkgq4UeicQqpPvGtT3trCHY6WauUg7p/mmrwr2m6VcKCrl eGPBFLohF6uEg== 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 5.15-stable tree Date: Sat, 28 Feb 2026 20:58:17 -0500 Message-ID: <20260301015818.1723719-1-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: stable@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 5.15-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