From owner-freebsd-mips@freebsd.org Thu Nov 19 19:37:44 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 88CAEA33517 for ; Thu, 19 Nov 2015 19:37:44 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from hz.grosbein.net (hz.grosbein.net [78.47.246.247]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "hz.grosbein.net", Issuer "hz.grosbein.net" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 33559159A; Thu, 19 Nov 2015 19:37:43 +0000 (UTC) (envelope-from eugen@grosbein.net) Received: from eg.sd.rdtc.ru (root@eg.sd.rdtc.ru [62.231.161.221]) by hz.grosbein.net (8.14.9/8.14.9) with ESMTP id tAJJbaF5042012 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 19 Nov 2015 20:37:37 +0100 (CET) (envelope-from eugen@grosbein.net) X-Envelope-From: eugen@grosbein.net X-Envelope-To: adrian@freebsd.org Received: from eg.sd.rdtc.ru (eugen@localhost [127.0.0.1]) by eg.sd.rdtc.ru (8.15.2/8.15.2) with ESMTP id tAJJbVtC051756; Fri, 20 Nov 2015 02:37:32 +0700 (KRAT) (envelope-from eugen@grosbein.net) Subject: Re: USB-related problem To: Adrian Chadd References: <56348063.3090508@grosbein.net> <563F91A8.9080702@grosbein.net> <5640C0FD.2040803@grosbein.net> <5640F315.5020303@grosbein.net> <56410214.3070901@grosbein.net> <564231DE.7090308@grosbein.net> <56423D82.5030203@grosbein.net> <564512A8.1000006@grosbein.net> <564AE210.3050804@grosbein.net> Cc: benno , Jeff Roberson , Konstantin Belousov , "freebsd-mips@freebsd.org" From: Eugene Grosbein Message-ID: <564E24FB.5000705@grosbein.net> Date: Fri, 20 Nov 2015 02:37:31 +0700 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=0.3 required=5.0 tests=BAYES_00,LOCAL_FROM autolearn=no version=3.3.2 X-Spam-Report: * -2.3 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * 2.6 LOCAL_FROM From my domains X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on hz.grosbein.net 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: Thu, 19 Nov 2015 19:37:44 -0000 On 20.11.2015 02:05, Adrian Chadd wrote: > On 17 November 2015 at 00:15, Eugene Grosbein wrote: >> On 17.11.2015 14:44, Adrian Chadd wrote: >>> hiya, >>> >>> any updates? I caan't trigger this one myself :( >> >> No updates. Yesterday I've spent some time to discover if KASSERT is guilty >> but finally found sysctl debug.kassert.kassert and it works as expected, no hangs. >> Working backtrace in KDB would be invaluable. >> > > Yeah. When it happens, do "show registers" ? I'd like to see if the > registers show anything useful. Just reproduced the deadlock: [4/17] Extracting pcre-8.37_4: 24%KDB: enter: Break to debugger [ thread pid 14 tid 100036 ] Stopped at kdb_enter+0x4c: lui at,0x8044 db> show registers at 0x80440000 cc_cpu+0xa0c0 v0 0x1e _DYNAMIC_LINKING+0x1d v1 0x1e _DYNAMIC_LINKING+0x1d a0 0 a1 0x4 _DYNAMIC_LINKING+0x3 a2 0x803756b8 a3 0x12f _DYNAMIC_LINKING+0x12e t0 0x8046afec t1 0 t2 0 t3 0 t4 0 t5 0 t6 0 t7 0 s0 0x80362bb8 mips_event_codes_size+0x7638 s1 0x8058cc00 s2 0x40000 s3 0x8058cc00 s4 0x803ec4dc uart_ipend_desc s5 0 s6 0x803ec500 uart_receive_desc s7 0x8058cc88 t8 0x18006 t9 0x7e2290 k0 0x805d4390 k1 0x8031a2a4 spinlock_exit+0x1c gp 0x80421c80 _gp sp 0xc3adb8e8 s8 0x803ec4b8 uart_flush_desc ra 0x801be69c kdb_enter+0x40 sr 0xec02 _DYNAMIC_LINKING+0xec01 lo 0x1 _DYNAMIC_LINKING hi 0x5135 _DYNAMIC_LINKING+0x5134 bad 0xc083d950 cs 0x4000c024 pc 0x801be6a8 kdb_enter+0x4c kdb_enter+0x4c: lui at,0x8044 db>