From nobody Wed Mar 09 23:39:01 2022 X-Original-To: freebsd-usb@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 558141A0FCDC for ; Wed, 9 Mar 2022 23:39:11 +0000 (UTC) (envelope-from farhan@farhan.codes) Received: from wforward3-smtp.messagingengine.com (wforward3-smtp.messagingengine.com [64.147.123.22]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4KDTDZ3bcwz4Zny for ; Wed, 9 Mar 2022 23:39:10 +0000 (UTC) (envelope-from farhan@farhan.codes) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailforward.west.internal (Postfix) with ESMTP id 7FEF41AC106A; Wed, 9 Mar 2022 18:39:03 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute3.internal (MEProxy); Wed, 09 Mar 2022 18:39:03 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm2; bh=3lDjntHGcK7SkY9kVCAHtTj6FqeTyGyNe10GgCkIT Yw=; b=nIik9TIl7esRdmtZutG4Lq17bAgF0Jx2fXwNG1JZGZShrRJoQSNSaJb7K grPvsZCX899hh4+jEXT5en5+9JEQy9OFhTzWBca5y5lpzwoC7dbsduydSEfjAY7F YWNzkPdno5ykLnSHkiax94hobb2P2Q1u93tMnm5L4pOFcAsv2rrqwzbNHylNyIjf GCPwnREx5tM+bDXPz3Ku15Atqn+Fmw4dM9E4NL6YXJ5jv7kBJk1eVZCJC5RhkeCq FzqICHF6WcsOaK8oAlSZIVj/t0xCF7B/ngpWlzR06VSrDnC+t9kCXnyNs52MmtA7 eN6m1Tk2LFSbJGXBfUT45QkQAK70Q== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvvddrudduledgudduucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpegtkffhvffuffgjfhfgggesthejre dttddtjeenucfhrhhomhephfgrrhhhrghnucfmhhgrnhcuoehfrghrhhgrnhesfhgrrhhh rghnrdgtohguvghsqeenucggtffrrghtthgvrhhnpeehteeukefhgfejudeggfeluedvve duudevieduudekgeeiheetkeekjeetgfegveenucevlhhushhtvghrufhiiigvpedtnecu rfgrrhgrmhepmhgrihhlfhhrohhmpehfrghrhhgrnhesfhgrrhhhrghnrdgtohguvghs X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 9 Mar 2022 18:39:02 -0500 (EST) Content-Type: text/plain; charset=utf-8; format=flowed Message-Id: <1646869058201.32255222.1343660178@farhan.codes> From: Farhan Khan To: Daniel O'Connor Cc: freebsd-usb@freebsd.org Subject: Re: Understanding USB callback + assertion panic Date: Wed, 09 Mar 2022 23:39:01 +0000 In-Reply-To: <7abd641a74526552a8cc1692f7453cb3c1279034.camel@farhan.codes> References: <7abd641a74526552a8cc1692f7453cb3c1279034.camel@farhan.codes> Content-Transfer-Encoding: 7bit List-Id: FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-usb List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-usb@freebsd.org X-BeenThere: freebsd-usb@freebsd.org MIME-Version: 1.0 X-Rspamd-Queue-Id: 4KDTDZ3bcwz4Zny X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=messagingengine.com header.s=fm2 header.b=nIik9TIl; dmarc=none; spf=none (mx1.freebsd.org: domain of farhan@farhan.codes has no SPF policy when checking 64.147.123.22) smtp.mailfrom=farhan@farhan.codes X-Spamd-Result: default: False [-3.98 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[messagingengine.com:s=fm2]; NEURAL_HAM_MEDIUM(-0.83)[-0.832]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[farhan.codes]; DWL_DNSWL_LOW(-1.00)[messagingengine.com:dkim]; RCVD_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[messagingengine.com:+]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_SHORT(-0.75)[-0.749]; MLMMJ_DEST(0.00)[freebsd-usb]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:29838, ipnet:64.147.123.0/24, country:US]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_IN_DNSWL_LOW(-0.10)[64.147.123.22:from] X-ThisMailContainsUnwantedMimeParts: N On Wednesday 09 March 2022 16:42:58 PM (-05:00), Farhan Khan wrote: > --------- > error = usbd_transfer_setup(uaa->device, &iface_index, usc->usc_xfer, > athn_config_common, ATHN_N_TRANSFERS, usc, &sc->sc_mtx); > ATHN_LOCK(sc); > usbd_transfer_start(usc->usc_xfer[ATHN_BULK_TX_DATA]); > ATHN_UNLOCK(sc); > --------- > > Considering this is quite similar to how other drivers do this, what > might I be doing wrong? > The mistake was on my end! My ATHN_LOCK code was incorrect and was not actually locking the mutex. The issue was resolved and it works. Thank you! I'm learning and making a lot of mistakes along the way.