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 056AA335561; Fri, 9 Jan 2026 12:02:21 +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=1767960141; cv=none; b=CPmyhObxAlC48eieIvDTaKp37gAhDHmYuQtZFKk8gKWBV5qfuB9GrayH+l4mJz6+7FlcnkEY3IkpIYO/2IP8BMWUd0RQpfinoN97/z86obL1SXse/xG2YJnCsDOIo/i+O3hSNtXhI6GSCJVZ1zBlJHo26vBczuMRcSBkBFzho+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767960141; c=relaxed/simple; bh=J4DNuhPJCa0qW3QgSIXGww0/522uNZ70xfkzt10tq3M=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Fzg8XHnaK++bzmN+UDbwFxQcpc7U55IZycN3bbPGC2IjWX+0PCRMQ4jJZqVfe8HkHTmDi6gKkiwr7lqpdgMmZHbhB4pJqPze9uD69T7Q0ArkrlwXXhMY1aqnuHTa7YjtrIVchywxvXbcSmCtJwIL4PvTEfuK/F9YIA8Gnj65xIo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=mZ3jMT7+; 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="mZ3jMT7+" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F6FDC4CEF1; Fri, 9 Jan 2026 12:02:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1767960140; bh=J4DNuhPJCa0qW3QgSIXGww0/522uNZ70xfkzt10tq3M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mZ3jMT7+SpOV2Gdd8Z0N8H9wPfFtI7Wsr5puIqOZc8mU/YIMTckFpBugnHPKGreyJ /lxUMcAo1CDHfwV0Yxnt3zIiGfoSgi/ELcNNPtWxN1T9CKotH03VD8AjJfU8G+nbiS mP3xpZKQFDMgVbIDR5nvHRdXrRp988hJzbyEMjpg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Qu Wenruo , David Sterba , Sasha Levin Subject: [PATCH 6.6 300/737] btrfs: fix a potential path leak in print_data_reloc_error() Date: Fri, 9 Jan 2026 12:37:19 +0100 Message-ID: <20260109112145.293265355@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260109112133.973195406@linuxfoundation.org> References: <20260109112133.973195406@linuxfoundation.org> User-Agent: quilt/0.69 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Qu Wenruo [ Upstream commit 313ef70a9f0f637a09d9ef45222f5bdcf30a354b ] Inside print_data_reloc_error(), if extent_from_logical() failed we return immediately. However there are the following cases where extent_from_logical() can return error but still holds a path: - btrfs_search_slot() returned 0 - No backref item found in extent tree - No flags_ret provided This is not possible in this call site though. So for the above two cases, we can return without releasing the path, causing extent buffer leaks. Fixes: b9a9a85059cd ("btrfs: output affected files when relocation fails") Signed-off-by: Qu Wenruo Reviewed-by: David Sterba Signed-off-by: David Sterba Signed-off-by: Sasha Levin --- fs/btrfs/inode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index b1be3e0fe7282..68bb5079aef74 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -266,6 +266,7 @@ static void print_data_reloc_error(const struct btrfs_inode *inode, u64 file_off if (ret < 0) { btrfs_err_rl(fs_info, "failed to lookup extent item for logical %llu: %d", logical, ret); + btrfs_release_path(&path); return; } eb = path.nodes[0]; -- 2.51.0