From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:57576 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753013AbeDJJGO (ORCPT ); Tue, 10 Apr 2018 05:06:14 -0400 Subject: Patch "mISDN: Fix a sleep-in-atomic bug" has been added to the 4.4-stable tree To: baijiaju1990@163.com, alexander.levin@microsoft.com, davem@davemloft.net, gregkh@linuxfoundation.org Cc: , From: Date: Tue, 10 Apr 2018 11:04:39 +0200 Message-ID: <1523351079105188@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 mISDN: Fix a sleep-in-atomic bug to the 4.4-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: misdn-fix-a-sleep-in-atomic-bug.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From foo@baz Tue Apr 10 10:31:53 CEST 2018 From: Jia-Ju Bai Date: Wed, 31 May 2017 15:08:25 +0800 Subject: mISDN: Fix a sleep-in-atomic bug From: Jia-Ju Bai [ Upstream commit 93818da5eed63fbc17b64080406ea53b86b23309 ] The driver may sleep under a read spin lock, and the function call path is: send_socklist (acquire the lock by read_lock) skb_copy(GFP_KERNEL) --> may sleep To fix it, the "GFP_KERNEL" is replaced with "GFP_ATOMIC". Signed-off-by: Jia-Ju Bai Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/isdn/mISDN/stack.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/isdn/mISDN/stack.c +++ b/drivers/isdn/mISDN/stack.c @@ -72,7 +72,7 @@ send_socklist(struct mISDN_sock_list *sl if (sk->sk_state != MISDN_BOUND) continue; if (!cskb) - cskb = skb_copy(skb, GFP_KERNEL); + cskb = skb_copy(skb, GFP_ATOMIC); if (!cskb) { printk(KERN_WARNING "%s no skb\n", __func__); break; Patches currently in stable-queue which might be from baijiaju1990@163.com are queue-4.4/misdn-fix-a-sleep-in-atomic-bug.patch queue-4.4/qlcnic-fix-a-sleep-in-atomic-bug-in-qlcnic_82xx_hw_write_wx_2m-and-qlcnic_82xx_hw_read_wx_2m.patch