From owner-freebsd-usb@freebsd.org Tue Aug 25 17:06:42 2020 Return-Path: Delivered-To: freebsd-usb@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 8FF543B1FCD for ; Tue, 25 Aug 2020 17:06:42 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (turbocat.net [IPv6:2a01:4f8:c17:6c4b::2]) (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 4Bbb4d6z7sz3TRR for ; Tue, 25 Aug 2020 17:06:41 +0000 (UTC) (envelope-from hps@selasky.org) Received: from hps2020.home.selasky.org (unknown [178.17.145.105]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 74FF8260147; Tue, 25 Aug 2020 19:06:40 +0200 (CEST) Subject: Re: Gadget serial driver support addition To: GARG Shivam , "freebsd-usb@freebsd.org" References: <254501b3-79fa-edaa-1b49-08b0132e86a6@selasky.org> <6ea2f654-bea8-993d-f815-fe75500b643c@selasky.org> From: Hans Petter Selasky Message-ID: <1f0636d2-b714-dce3-a1cc-6c69415a43f7@selasky.org> Date: Tue, 25 Aug 2020 19:06:13 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4Bbb4d6z7sz3TRR X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of hps@selasky.org designates 2a01:4f8:c17:6c4b::2 as permitted sender) smtp.mailfrom=hps@selasky.org X-Spamd-Result: default: False [-1.20 / 15.00]; ARC_NA(0.00)[]; TO_DN_EQ_ADDR_SOME(0.00)[]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+a:mail.turbocat.net:c]; MID_RHS_MATCH_FROM(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[selasky.org]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.29)[-0.293]; RCPT_COUNT_TWO(0.00)[2]; NEURAL_HAM_MEDIUM(-0.60)[-0.605]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/29, country:DE]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-usb] X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Aug 2020 17:06:42 -0000 On 2020-08-25 19:02, GARG Shivam wrote: > My Device side Linux is getting panic as soon as I attached the USB to FreeBSD. Any view on this? > > If I stopped the enumeration at FreeBSD using command (sysctl hw.usb.disable_enumeration=1), so device side Linux is stopped crashing. > > Can you suggest me some area at device side that might be causing the crash. Yes, you need to report this to "linux-usb@vger.kernel.org". If Linux side is crashing it is likely a bug in the Linux gadget USB stack that needs to be fixed. Do you have a panic backtrace from Linux? The crash probably explains why the device is not working! --HPS