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 44A692F6931; Sat, 12 Sep 2026 17:05:52 +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=1789232753; cv=none; b=TRGMyHZ3lJ6PNA8njghVIFJpZ2P5xzIPvE13B6OMqAOtUxu4VbLLhnjqQ4rZfWhrMCCV+2tAC4h0vb0eQjIXJxteyxR0zwOXQ+1h2uWESPdakLqJgYcXAWKJTY2NnJnyV+C+cz4sWcxuJSk+oSlZeVJoFrmIHYz09P4/AoI9EYM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789232753; c=relaxed/simple; bh=5oLRR7zIGnT74vc7ssLpU71Ip8etp3YGCsf2YZnRlUA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ATBWcn/jhzBUbDsZIPfbs65SPsR/CANtFCkVzurSDvQtFHds1UEa8cvKDkWkCMDsiDXRoC7a51bChpd5P0t3YZOIu4EhUyKIOnPtjVIlJyF4X8jIBc1AcAOLQbvXj5mfMnGPqz03Qiers5QN/QC688XAKEWx5wur0xEPsbyIwFw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=WmEg5dvy; 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="WmEg5dvy" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 439771F000FF; Sat, 12 Sep 2026 17:05:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789232752; bh=13dPLy/bndI7yEGfpTRDD3gGW7v+wAyj2Qv2pCGSriw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=WmEg5dvybHhJXj5JpKvag9H/8W4QfecZUham4ILkRlqj3plAAaxWMh27U14PqflFv qe1JPIiGWmbibeXRHPrNJxSD2HT42D/E9CUerTYkdydhcnlTsd347KzeaiYXclaRBb cEvKRJPVC3dv2G1V8ZKjzLZK4MdfRsXRklTcsDS8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yichong Chen , Tyler Hicks Subject: [PATCH 5.15 072/935] ecryptfs: release message context on send failure Date: Sat, 12 Sep 2026 08:51:42 +0200 Message-ID: <20260912065528.487276639@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@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: Yichong Chen commit 219644a3ad5518217b2d62cad6d2c36a2308c949 upstream. ecryptfs_send_message_locked() moves a message context from the free list to the allocated list before sending the request to the userspace daemon. If ecryptfs_send_miscdev() fails, the context is left on the allocated list and cannot be reused. Move it back to the free list on failure and clear the caller's pointer. Fixes: f66e883eb618 ("eCryptfs: integrate eCryptfs device handle into the module.") Cc: Signed-off-by: Yichong Chen Signed-off-by: Tyler Hicks Signed-off-by: Greg Kroah-Hartman --- fs/ecryptfs/messaging.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) --- a/fs/ecryptfs/messaging.c +++ b/fs/ecryptfs/messaging.c @@ -285,9 +285,16 @@ ecryptfs_send_message_locked(char *data, mutex_unlock(&ecryptfs_msg_ctx_lists_mux); rc = ecryptfs_send_miscdev(data, data_len, *msg_ctx, msg_type, 0, daemon); - if (rc) + if (rc) { printk(KERN_ERR "%s: Error attempting to send message to " "userspace daemon; rc = [%d]\n", __func__, rc); + mutex_lock(&ecryptfs_msg_ctx_lists_mux); + mutex_lock(&(*msg_ctx)->mux); + ecryptfs_msg_ctx_alloc_to_free(*msg_ctx); + mutex_unlock(&(*msg_ctx)->mux); + mutex_unlock(&ecryptfs_msg_ctx_lists_mux); + *msg_ctx = NULL; + } out: return rc; }