From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:60702 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751746AbdHCWoA (ORCPT ); Thu, 3 Aug 2017 18:44:00 -0400 Subject: Patch "isdn: Fix a sleep-in-atomic bug" has been added to the 3.18-stable tree To: baijiaju1990@163.com, amit.pundir@linaro.org, davem@davemloft.net, gregkh@linuxfoundation.org Cc: , From: Date: Thu, 03 Aug 2017 15:43:57 -0700 Message-ID: <150180023714392@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 isdn: Fix a sleep-in-atomic bug to the 3.18-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: isdn-fix-a-sleep-in-atomic-bug.patch and it can be found in the queue-3.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From e8f4ae85439f34bec3b0ab69223a41809dab28c9 Mon Sep 17 00:00:00 2001 From: Jia-Ju Bai Date: Wed, 31 May 2017 09:40:11 +0800 Subject: isdn: Fix a sleep-in-atomic bug From: Jia-Ju Bai commit e8f4ae85439f34bec3b0ab69223a41809dab28c9 upstream. The driver may sleep under a spin lock, the function call path is: isdn_ppp_mp_receive (acquire the lock) isdn_ppp_mp_reassembly isdn_ppp_push_higher isdn_ppp_decompress isdn_ppp_ccp_reset_trans isdn_ppp_ccp_reset_alloc_state kzalloc(GFP_KERNEL) --> may sleep To fixed it, the "GFP_KERNEL" is replaced with "GFP_ATOMIC". Signed-off-by: Jia-Ju Bai Signed-off-by: David S. Miller Signed-off-by: Amit Pundir Signed-off-by: Greg Kroah-Hartman --- drivers/isdn/i4l/isdn_ppp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/isdn/i4l/isdn_ppp.c +++ b/drivers/isdn/i4l/isdn_ppp.c @@ -2364,7 +2364,7 @@ static struct ippp_ccp_reset_state *isdn id); return NULL; } else { - rs = kzalloc(sizeof(struct ippp_ccp_reset_state), GFP_KERNEL); + rs = kzalloc(sizeof(struct ippp_ccp_reset_state), GFP_ATOMIC); if (!rs) return NULL; rs->state = CCPResetIdle; Patches currently in stable-queue which might be from baijiaju1990@163.com are queue-3.18/isdn-fix-a-sleep-in-atomic-bug.patch