From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jia-Ju Bai Subject: [BUG] 3com/3c59x: two possible sleep-in-atomic bugs Date: Tue, 12 Dec 2017 11:34:18 +0800 Message-ID: <601d2159-76d7-57ac-9d84-6e33a3352fbe@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, Linux Kernel Mailing List To: klassert@mathematik.tu-chemnitz.de, vortex@scyld.com, becker@scyld.com, David Miller Return-path: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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