From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:44478 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758934AbdLRNZJ (ORCPT ); Mon, 18 Dec 2017 08:25:09 -0500 Subject: Patch "rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_createbss_cmd" has been added to the 4.9-stable tree To: baijiaju1990@163.com, alexander.levin@verizon.com, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 18 Dec 2017 14:22:54 +0100 Message-ID: <1513603374157217@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_createbss_cmd to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: rtl8188eu-fix-a-possible-sleep-in-atomic-bug-in-rtw_createbss_cmd.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Mon Dec 18 14:12:35 CET 2017 From: Jia-Ju Bai Date: Sun, 8 Oct 2017 19:54:45 +0800 Subject: rtl8188eu: Fix a possible sleep-in-atomic bug in rtw_createbss_cmd From: Jia-Ju Bai [ Upstream commit 2bf9806d4228f7a6195f8e03eda0479d2a93b411 ] The driver may sleep under a spinlock, and the function call path is: rtw_surveydone_event_callback(acquire the spinlock) rtw_createbss_cmd kzalloc(GFP_KERNEL) --> may sleep To fix it, GFP_KERNEL is replaced with GFP_ATOMIC. This bug is found by my static analysis tool and my code review. Signed-off-by: Jia-Ju Bai Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/core/rtw_cmd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/staging/rtl8188eu/core/rtw_cmd.c +++ b/drivers/staging/rtl8188eu/core/rtw_cmd.c @@ -342,7 +342,7 @@ u8 rtw_createbss_cmd(struct adapter *pa else RT_TRACE(_module_rtl871x_cmd_c_, _drv_info_, (" createbss for SSid:%s\n", pmlmepriv->assoc_ssid.Ssid)); - pcmd = kzalloc(sizeof(struct cmd_obj), GFP_KERNEL); + pcmd = kzalloc(sizeof(struct cmd_obj), GFP_ATOMIC); if (!pcmd) { res = _FAIL; goto exit; Patches currently in stable-queue which might be from baijiaju1990@163.com are queue-4.9/rtl8188eu-fix-a-possible-sleep-in-atomic-bug-in-rtw_createbss_cmd.patch queue-4.9/rtl8188eu-fix-a-possible-sleep-in-atomic-bug-in-rtw_disassoc_cmd.patch queue-4.9/vt6655-fix-a-possible-sleep-in-atomic-bug-in-vt6655_suspend.patch