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 6459522301; Mon, 1 Apr 2024 15:53:48 +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=1711986829; cv=none; b=ACrU0k9hg8k9LXSupPZvEnejW3M5R2HAF7EerskoLXAvzmnigaQF20oy2ikI9H7FdqPSLbpkB22p//znnaTEMmlVOQRgkx9LyCl9uB1XSZOaZqDDgACk1ALz6YJWRLcLpGUoirBulXCFcomxSugibw8EsMVLYIwDa6GufEv7JK0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711986829; c=relaxed/simple; bh=ALHDozNPbNXIxYEO/kl+4a3+dokEavWbitSDc0cIfRs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fmi2p0cHRezYD1koCqjTPMjZSOUI/wuiBDgVJcVhMXGIeeNSlFhtysNYm2Z8IxyzBZJH/3KHNU0TtQ8L/BHMVW7dnAUNEsvH80DIrzz8ctyRQn8rWrPZxL6aeKE3fc8n2Jceun6aWXI1rAawYMHd2sFq8ysJUT/AP2mGzTx79xc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=G2At9xlU; 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="G2At9xlU" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 76BBAC43390; Mon, 1 Apr 2024 15:53:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711986828; bh=ALHDozNPbNXIxYEO/kl+4a3+dokEavWbitSDc0cIfRs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G2At9xlUI3BvrdwADN307EBf+y3C/PtEc3BwictLvUTwXz0JNEKTNgU594p85ZMGC +r+xvCLjo8VML3Kh7xPPCUQXXGqhhL9zT5fTKuFIqfDFqDU/JAogyH5MqWXTBfWy8U tlqmffj5U0AX7NLn93wlMcuaP4EzJ9F4GLOTU9jI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alex Lyakas , Josef Bacik , Qu Wenruo , Filipe Manana , David Sterba , Sasha Levin Subject: [PATCH 6.8 097/399] btrfs: fix off-by-one chunk length calculation at contains_pending_extent() Date: Mon, 1 Apr 2024 17:41:03 +0200 Message-ID: <20240401152552.079856646@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240401152549.131030308@linuxfoundation.org> References: <20240401152549.131030308@linuxfoundation.org> User-Agent: quilt/0.67 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 6.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Filipe Manana [ Upstream commit ae6bd7f9b46a29af52ebfac25d395757e2031d0d ] At contains_pending_extent() the value of the end offset of a chunk we found in the device's allocation state io tree is inclusive, so when we calculate the length we pass to the in_range() macro, we must sum 1 to the expression "physical_end - physical_offset". In practice the wrong calculation should be harmless as chunks sizes are never 1 byte and we should never have 1 byte ranges of unallocated space. Nevertheless fix the wrong calculation. Reported-by: Alex Lyakas Link: https://lore.kernel.org/linux-btrfs/CAOcd+r30e-f4R-5x-S7sV22RJPe7+pgwherA6xqN2_qe7o4XTg@mail.gmail.com/ Fixes: 1c11b63eff2a ("btrfs: replace pending/pinned chunks lists with io tree") CC: stable@vger.kernel.org # 6.1+ Reviewed-by: Josef Bacik Reviewed-by: Qu Wenruo Signed-off-by: Filipe Manana Signed-off-by: David Sterba Signed-off-by: Sasha Levin --- fs/btrfs/volumes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index d67785be2c778..d852d94d51c00 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1403,7 +1403,7 @@ static bool contains_pending_extent(struct btrfs_device *device, u64 *start, if (in_range(physical_start, *start, len) || in_range(*start, physical_start, - physical_end - physical_start)) { + physical_end + 1 - physical_start)) { *start = physical_end + 1; return true; } -- 2.43.0