From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jia-Ju Bai Subject: [BUG] wl3501: a possible sleep-in-atomic bug in wl3501_reset Date: Tue, 12 Dec 2017 17:04:52 +0800 Message-ID: <8b0519f9-e5f3-aa73-09be-f399f6a6865a@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: kvalo@codeaurora.org, mhchen@golf.ccl.itri.org.tw, acme@conectiva.com.br, niemeyer@conectiva.com Return-path: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org According to drivers/net/wireless/wl3501_cs.c, the driver may sleep under a spinlock. The function call path is: wl3501_reset (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