From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2C567C2BA19 for ; Sat, 11 Apr 2020 23:23:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 064C720769 for ; Sat, 11 Apr 2020 23:23:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586647395; bh=g0v0sXrv70IUGTrwcuOJiF8tOCF6w735QElodev/INo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Tvn/oTXaDnEeJejeeDfBW725qR5o0xkwsY/3gk4O46pk7KSnq0grLiHIvkwmTxS9H TM0RaZOY/EV5VrUtG4ASuz7+9KrTdjgIOl5bs43Z4Bnz7T+3PZOaiTjjfr6tUzLRwA KqY1e19buX1lBIvvs1FAMI/ZW5eL/5kv1/Ax3vtk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730491AbgDKXXN (ORCPT ); Sat, 11 Apr 2020 19:23:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:53948 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730324AbgDKXNF (ORCPT ); Sat, 11 Apr 2020 19:13:05 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6D6F520787; Sat, 11 Apr 2020 23:13:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586646785; bh=g0v0sXrv70IUGTrwcuOJiF8tOCF6w735QElodev/INo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FatpMbInEFnovNmd6pIvm4fumQLnuUwUubMAwbbOSpzSwtNQNSusBE8JKzRw/FuXW +VfVQzF1Y855/sy0MNit79yQ256Nt0oQZXpzs9LdqC2+sxkxuaAZu47KcdtXMWHU+f SONO6qFXmQmAKgvgQgh+B3nNbR2KpzLLvDDBghr8= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Raveendran Somu , Chi-hsien Lin , Kalle Valo , Sasha Levin , linux-wireless@vger.kernel.org, brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 50/66] brcmfmac: Fix driver crash on USB control transfer timeout Date: Sat, 11 Apr 2020 19:11:47 -0400 Message-Id: <20200411231203.25933-50-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200411231203.25933-1-sashal@kernel.org> References: <20200411231203.25933-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Raveendran Somu [ Upstream commit 93a5bfbc7cad8bf3dea81c9bc07761c1226a0860 ] When the control transfer gets timed out, the error status was returned without killing that urb, this leads to using the same urb. This issue causes the kernel crash as the same urb is sumbitted multiple times. The fix is to kill the urb for timeout transfer before returning error Signed-off-by: Raveendran Somu Signed-off-by: Chi-hsien Lin Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1585124429-97371-2-git-send-email-chi-hsien.lin@cypress.com Signed-off-by: Sasha Levin --- drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c index 41254f04ab152..f395ea0b73e7d 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c @@ -339,11 +339,12 @@ static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) return err; } timeout = brcmf_usb_ioctl_resp_wait(devinfo); - clear_bit(0, &devinfo->ctl_op); if (!timeout) { brcmf_err("Txctl wait timed out\n"); + usb_kill_urb(devinfo->ctl_urb); err = -EIO; } + clear_bit(0, &devinfo->ctl_op); return err; } @@ -369,11 +370,12 @@ static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) } timeout = brcmf_usb_ioctl_resp_wait(devinfo); err = devinfo->ctl_urb_status; - clear_bit(0, &devinfo->ctl_op); if (!timeout) { brcmf_err("rxctl wait timed out\n"); + usb_kill_urb(devinfo->ctl_urb); err = -EIO; } + clear_bit(0, &devinfo->ctl_op); if (!err) return devinfo->ctl_urb_actual_length; else -- 2.20.1