From owner-freebsd-usb@FreeBSD.ORG Wed Oct 20 15:30:40 2010 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: by hub.freebsd.org (Postfix, from userid 1233) id 2B6F51065670; Wed, 20 Oct 2010 15:30:40 +0000 (UTC) Date: Wed, 20 Oct 2010 15:30:40 +0000 From: Alexander Best To: freebsd-usb@freebsd.org, freebsd-current@freebsd.org Message-ID: <20101020153040.GA3184@freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Cc: Subject: serious issue caused by usb device, stalling almost all operations X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 Oct 2010 15:30:40 -0000 hi there, i'm running HEAD (r213495; amd64). i stumbled upon this severe problem: after attaching my mobile phone, it simply resets without doing mount or anything. however after letting the device come up again it won't show up in the console. after detaching it the usb subsystem seemed to have completely crashed. but that's not all. the following programs now simply hang without producing any output C-C won't do anything: - dmesg - top - ps - killall - camcontrol devlist - usbconfig i cannot even kill the apps, since top and ps aren't working so there's no way to find out the PIDs. using 'killall dmesg' e.g. won't work either, since killall will also stall. this is the console output which i could grab with 'vidcontrol -H -P < /dev/ttyv0' (since dmesg doesn't work anymore): ugen3.3: at usbus3 umass0: on usbus3 (probe0:umass-sim0:0:0:0): TEST UNIT READY. CDB: 0 0 0 0 0 0 (probe0:umass-sim0:0:0:0): CAM status: SCSI Status Error (probe0:umass-sim0:0:0:0): SCSI status: Check Condition (probe0:umass-sim0:0:0:0): SCSI sense: UNIT ATTENTION asc:28,0 (Not ready to rea dy change, medium may have changed) da0 at umass-sim0 bus 0 scbus9 target 0 lun 0 da0: Removable Direct Access SCSI-0 device da0: 40.000MB/s transfers da0: 3777MB (7736320 512 byte sectors: 255H 63S/T 481C) (da0:umass-sim0:0:0:0): AutoSense failed ugen3.3: at usbus3 (disconnected) umass0: at uhub8, port 3, addr 3 (disconnected) (da0:umass-sim0:0:0:0): AutoSense failed (da0:umass-sim0:0:0:0): lost device (da0:umass-sim0:0:0:0): Invalidating pack (da0:umass-sim0:0:0:0): Synchronize cache failed, status == 0xa, scsi status == 0x0 (da0:umass-sim0:0:0:0): removing device entry lock order reversal: 1st 0xffffffff80a37d50 GEOM topology (GEOM topology) @ /usr/src/sys/geom/label/ g_label.c:320 2nd 0xffffffff808387a0 sysctl lock (sysctl lock) @ /usr/src/sys/kern/kern_sysct l.c:257 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x35 kdb_backtrace() at kdb_backtrace+0x4e _witness_debugger() at _witness_debugger+0x29 witness_checkorder() at witness_checkorder+0xad2 _sx_xlock() at _sx_xlock+0xae sysctl_ctx_free() at sysctl_ctx_free+0x2e dacleanup() at dacleanup+0x65 camperiphfree() at camperiphfree+0x152 cam_periph_release_locked() at cam_periph_release_locked+0x84 cam_periph_release() at cam_periph_release+0x6d daclose() at daclose+0x223 g_disk_access() at g_disk_access+0x21c g_access() at g_access+0x3b7 g_label_taste() at g_label_taste+0x3be g_new_provider_event() at g_new_provider_event+0x145 one_event() at one_event+0x2d5 g_run_events() at g_run_events+0xe g_event_procbody() at g_event_procbody+0x8b fork_exit() at fork_exit+0xfd fork_trampoline() at fork_trampoline+0xe --- trap 0, rip = 0, rsp = 0xffffff800003ecf0, rbp = 0 --- cheers. alex -- a13x