From owner-freebsd-mips@freebsd.org Sun Nov 8 19:20:57 2015 Return-Path: Delivered-To: freebsd-mips@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 8E8D1A290C4 for ; Sun, 8 Nov 2015 19:20:57 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-ig0-x229.google.com (mail-ig0-x229.google.com [IPv6:2607:f8b0:4001:c05::229]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 55E3B1769; Sun, 8 Nov 2015 19:20:57 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by igbhv6 with SMTP id hv6so63981743igb.0; Sun, 08 Nov 2015 11:20:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=Chuu4frphPf3F0KeTRmhk5nVsWgZd5yNglVYZuEvFTU=; b=b/408U4unWZ/yudWs3yfFSAmdkpKVmH52OODTTI5KiDKq8RExa+Mlc3mf3EaD+VqLs nucAN1d7/UXf3fuFkjRnO2atbrIo8krIR5LewqSY89QYHMv5zpZPKfe5NLkGM95ZnXsG QRPOeeGmrX//aGHo9Uw0xJNbQ3kp+X0i8Iv5EDM9Q1m0vA4P9Ftnu8w8Qi+UBiuMjz4l ZwGKjrXN/p2RwWDBgkeMez6onJTO7aYFAYCd6BGDoa4D/DzwE2T+UkpdIDjuSD0fXnBH p9ctae5vUC7Xows/BthXC52GICN53yu2R8wZwwJXSJJ8sI8a4xVdlbCZfBCq4vdevTTd R+BQ== MIME-Version: 1.0 X-Received: by 10.50.178.141 with SMTP id cy13mr16847766igc.61.1447010456660; Sun, 08 Nov 2015 11:20:56 -0800 (PST) Sender: adrian.chadd@gmail.com Received: by 10.36.217.196 with HTTP; Sun, 8 Nov 2015 11:20:56 -0800 (PST) In-Reply-To: <563F91A8.9080702@grosbein.net> References: <56348063.3090508@grosbein.net> <56348239.3050701@grosbein.net> <563500FC.8020201@grosbein.net> <5635148B.2070307@grosbein.net> <56351AA6.80903@grosbein.net> <563523CA.3040207@grosbein.net> <56367686.4090801@grosbein.net> <563707A0.3040700@grosbein.net> <56370E1D.3040801@grosbein.net> <563F5630.2000407@grosbein.net> <563F6F6F.1010807@grosbein.net> <563F91A8.9080702@grosbein.net> Date: Sun, 8 Nov 2015 11:20:56 -0800 X-Google-Sender-Auth: V_PfcUMTwIp6yGO2iViJBRI2VN4 Message-ID: Subject: Re: USB-related problem From: Adrian Chadd To: Eugene Grosbein , Jeff Roberson , Konstantin Belousov , benno Cc: "freebsd-mips@freebsd.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-mips@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Porting FreeBSD to MIPS List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Nov 2015 19:20:57 -0000 Sigh. I think this is more fallout from the changes to the buffer management code. I'll go add a ddb command to at least let us inspect the state of the buffer cache so we can do some further debugging. Thanks, -adrian On 8 November 2015 at 10:17, Eugene Grosbein wrote: > On 09.11.2015 00:44, Adrian Chadd wrote: >> hiya, >> >> try updating. I committed a workaround fix yesterday. > > I've updated today, its r290541. But I have custom kernel config > and custom build script, it uses nanobsd(8). > > I cannot make the kernel to panic anymore, it just freezes while writing to UFS/USB. > Userland stops responding to console and kernel stops responding to pings. > But I can break to KDB using ALT_BREAK_TO_DEBUGGER sequence: > > db> show alllock > Process v87 (pkg-static) thread 0x82c5c000 (100057) > exclusive lockmgr ufs (ufs) r = 0 (0x84cc54b4) locked @ /home/src/sys/kern/vfs_vnops.c:873 > Process 14 (syncer) thread 0x809f4360 (100036) > exclusive lockmgr bufwait (bufwait) r = 0 (0xc3036450) locked @ /home/src/sys/kern/vfs_bio.c:1454 > exclusive lockmgr bufwait (bufwait) r = 0 (0xc30366e0) locked @ /home/src/sys/kern/vfs_default.c:671 > exclusive lockmgr devfs (devfs) r = 0 (0x82c72c94) locked @ /home/src/sys/kern/vfs_subr.c:1779 >