To: klassert@mathematik.tu-chemnitz.de, vortex@scyld.com, becker@scyld.com,
        David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
From: Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [BUG] 3com/3c59x: two possible sleep-in-atomic bugs
Message-ID: <601d2159-76d7-57ac-9d84-6e33a3352fbe@gmail.com>
Date: Tue, 12 Dec 2017 11:34:18 +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
Content-Length: 606
Lines: 22

According to drivers/net/ethernet/3com/3c59x.c, the kernel module may 
sleep in the interrupt handler.
The function call paths are:
boomerang_interrupt (interrupt handler)
   vortex_error
     vortex_up
       pci_set_power_state --> may sleep
       pci_enable_device --> may sleep

vortex_interrupt (interrupt handler)
   vortex_error
     vortex_up
       pci_set_power_state --> may sleep
       pci_enable_device --> may sleep

I do not find a good way to fix them, so I only report.
These possible bugs are found by my static analysis tool (DSAC) and 
checked by my code review.


Thanks,
Jia-Ju Bai