From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752273AbdLLIid (ORCPT <rfc822;w@1wt.eu>);
        Tue, 12 Dec 2017 03:38:33 -0500
Received: from mail-it0-f68.google.com ([209.85.214.68]:39746 "EHLO
        mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751871AbdLLIi0 (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Tue, 12 Dec 2017 03:38:26 -0500
X-Google-Smtp-Source: ACJfBouEJFRxMq6NH2unoLwax5ucw13I8H5XLqXS7IUQ+pDuTQ87Z2XJBW9+BS8L23JIQzEOCBDuWw==
To: mlindner@marvell.com, stephen@networkplumber.org, shemminger@osdl.org,
        shemminger@linux-foundation.org
Cc: netdev@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
From: Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [BUG] skge: a possible sleep-in-atomic bug in skge_remove
Message-ID: <1e8a8196-f0d1-2a82-3632-b882787c4391@gmail.com>
Date: Tue, 12 Dec 2017 16:38:12 +0800
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101
 Thunderbird/52.2.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
Content-Language: en-US
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

According to drivers/net/ethernet/marvell/skge.c, the driver may sleep 
under a spinlock.
The function call path is:
skge_remove (acquire the spinlock)
   free_irq --> may sleep

I do not find a good way to fix it, so I only report.
This possible bug is found by my static analysis tool (DSAC) and checked 
by my code review.


Thanks,
Jia-Ju Bai