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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA59EC25B06 for ; Sun, 14 Aug 2022 15:30:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239471AbiHNPaW (ORCPT ); Sun, 14 Aug 2022 11:30:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38496 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240181AbiHNP25 (ORCPT ); Sun, 14 Aug 2022 11:28:57 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BCF2AE41; Sun, 14 Aug 2022 08:28:56 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 0B64B60C08; Sun, 14 Aug 2022 15:28:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4A604C433D6; Sun, 14 Aug 2022 15:28:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660490935; bh=QT4ELwD36/p5x2JGWEwyso4qQpwPkC03HMsNuMjrIMQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VnmEO06x98OagPOvh0m8H/mNUfDRhUKOpZwjoYOKfQLR4wcfvOFOkTN18iDFr+Kwj ci1Hfg3oOzZp8m6kwB0Ii2FNb/LBqb9IozHgPYfbXRq0Dfc1IeBv5OHauJB0nYpaTh IpSci+IFKarhucOwYJxYZp3WDQlyjah7MCZ8yyp5/Du6ZvVxgSEzh/urMKCd+8Po52 vxhNKgvV9qmMVaTWVXuOS5QnVtW/GE6NeSafwzQDVkFOWrQo09huD0GYH1M9MluKMN lmN21GjBBjNrKWrfuY0ZobRibZuCNrhf+q0xqe8ebOEg60g+ukFRgTD2+6miqaIxcK TkDSbXm8kx2XA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jozef Martiniak , Greg Kroah-Hartman , Sasha Levin , balbi@kernel.org, stern@rowland.harvard.edu, hbh25y@gmail.com, axboe@kernel.dk, mingo@kernel.org, rdunlap@infradead.org, linux-usb@vger.kernel.org Subject: [PATCH AUTOSEL 5.19 31/64] gadgetfs: ep_io - wait until IRQ finishes Date: Sun, 14 Aug 2022 11:24:04 -0400 Message-Id: <20220814152437.2374207-31-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220814152437.2374207-1-sashal@kernel.org> References: <20220814152437.2374207-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jozef Martiniak [ Upstream commit 04cb742d4d8f30dc2e83b46ac317eec09191c68e ] after usb_ep_queue() if wait_for_completion_interruptible() is interrupted we need to wait until IRQ gets finished. Otherwise complete() from epio_complete() can corrupt stack. Signed-off-by: Jozef Martiniak Link: https://lore.kernel.org/r/20220708070645.6130-1-jomajm@gmail.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/gadget/legacy/inode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index 79990597c39f..01c3ead7d1b4 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -362,6 +362,7 @@ ep_io (struct ep_data *epdata, void *buf, unsigned len) spin_unlock_irq (&epdata->dev->lock); DBG (epdata->dev, "endpoint gone\n"); + wait_for_completion(&done); epdata->status = -ENODEV; } } -- 2.35.1