From owner-freebsd-current@freebsd.org Thu Mar 22 02:42:21 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 80FC3F5EA01 for ; Thu, 22 Mar 2018 02:42:21 +0000 (UTC) (envelope-from hyun@caffeinated.codes) Received: from out5-smtp.messagingengine.com (out5-smtp.messagingengine.com [66.111.4.29]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2009C780FA for ; Thu, 22 Mar 2018 02:42:20 +0000 (UTC) (envelope-from hyun@caffeinated.codes) Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailout.nyi.internal (Postfix) with ESMTP id D1E752088E; Wed, 21 Mar 2018 22:42:19 -0400 (EDT) Received: from web1 ([10.202.2.211]) by compute7.internal (MEProxy); Wed, 21 Mar 2018 22:42:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= caffeinated.codes; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=ivnDDJ h8UNozi8nhv08P8B3TNhmk7wx0LSeDDAwC9OI=; b=GSYR4X5v4ne6j4o8GQwxyC nrLA/Vwk9+2UJsc5AcNY21GTcXLNuXP8r5GKgVE9fGhAJhVvU5eXR+9MDKiNwprF BtN/K54sgkfvQaiFyd+6uVHAl2U7O6cwAcPQmy86oB7GkhLvhFKgO/twPcWd8k8F 5Yvw2YKdRHVcAwX+SoioxW998fk4z/Kxm1Vn2Of2mXlMj4qA0K20RW2ZfMOppw9S 2x7A60DIc7G8pB/sr2F9PAMADBBmFC16zy6iwaqPR79PbdUS4nsqjDvief6yOFk6 psfdmevH/Lq1IUWnN4c+2IKZEKap87+st9MXeQPQIHvgr8zvUuS0/0ZO7byGECLw == DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=ivnDDJ h8UNozi8nhv08P8B3TNhmk7wx0LSeDDAwC9OI=; b=gWX55bi3UzjOrfduPh9Z9y cks4Gi9SAR1MLnMB5Pyo4jOkmdsGJyR+pL/42jiiVHZDl2HwIjU0PilxIZUPv4Sf s7SekUoCmohXSvQ01jlvHoaJCPj0HdD0dN8/FLXpoRUmt+ap808zs5BTx3bBhFjV CggYKvJNZ9VZfI75uhjpLB9N1ZGy+UUVUgsVtvKwG54UEuF5vcrHUON05Ca6QVAh 8X0KUysUpUlvFzAe/dOvqbGMBtFRqoZ7nFpxsWr2tQ4yU5C143fsZtazbE75N/lz I54M3yu9CUf7bIk7/zz4tTWsBMiE0tkCyzfK5keBXDMqXLlNIjOw91QjmsolX1VQ == X-ME-Sender: Received: by mailuser.nyi.internal (Postfix, from userid 99) id AA1FD940A2; Wed, 21 Mar 2018 22:42:19 -0400 (EDT) Message-Id: <1521686539.3047757.1311778784.3E60E604@webmail.messagingengine.com> From: Hyun Hwang To: "Hartmann, O." Cc: FreeBSD CURRENT MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Mailer: MessagingEngine.com Webmail Interface - ajax-5ce6c4ba Date: Wed, 21 Mar 2018 22:42:19 -0400 In-Reply-To: <20180321120710.4eb3b944@hermann> References: <20180321120710.4eb3b944@hermann> Subject: Re: CURRENT r331284: crashing with USB X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Mar 2018 02:42:21 -0000 On Wednesday, March 21, 2018, 12:07 PM (UTC+0100), "Hartmann, O." wrote: > Hello. > > Incident: CURRENT r331284 can be brought down reliably with an USB > flash drive plugged in and out without mounting or doing anything with > it. > > [...] > > Does anyone else observe this bug? > Can confirm: whenever I plug my Transcend USB microSD reader into my builder (amd64, r331284), the kernel does attach da0 then immediately panics and falls down to `db>` prompt. > I can plugin the USB and then unplug it and after two or three times doing this, the box goes down. I did not even have to plug-unplug the reader three times; plug the reader in and bam! immediate panic. AFAIK, r331115 did not have this issue because I was able to update my RPi 2 with the very reader from the very builder. I managed to salvage kernel binary dump; in case the dump is needed, please let me know. -- Hyun Hwang