Hi. This problem seems to be fixed by the patch you suggested, and the floppy drive comes to work again. ***** ugen0.2: <Y-E DATA> at usbus0 umass0: <FLOPPY> on usbus0 umass0: UFI over CBI with CCI; quirks = 0x0042 umass0:1:0:-1: Attached to scbus1 (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): NOT READY asc:3a,0 (probe0:umass-sim0:0:0:0): Medium not present (probe0:umass-sim0:0:0:0): Unretryable error da0 at umass-sim0 bus 0 target 0 lun 0 da0: <Y-E DATA USB-FDU 5.01> Removable Direct Access SCSI-0 device da0: 20KB/s transfers da0: Attempt to query device size failed: NOT READY, Medium not present ***** Thanks! At Mon, 12 Jan 2009 09:37:27 +0100, Hans Petter Selasky wrote: > Hi, > > Thanks for reporting. > > This bug looks like a glitch on my side when introducing Zero-copy in UMASS. > > Try the following patch: > > http://perforce.freebsd.org/chv.cgi?CH=156005 > > --HPS > > On Monday 12 January 2009, WATANABE Kazuhiro wrote: > > Hi, all. > > > > I have an USB floppy drive which works well on 7.1-RELEASE, and > > 8-current with the old USB stack. > > > > ***** > > umass0: <Y-E DATA USB Floppy Drive, class 0/0, rev 1.10/5.01, addr 2> on > > uhub0 da0 at umass-sim0 bus 0 target 0 lun 0 > > da0: <Y-E DATA USB-FDU 5.01> Removable Direct Access SCSI-0 device > > da0: 20KB/s transfers > > da0: Attempt to query device size failed: NOT READY, Medium not present > > > > port 1 addr 2: full speed, power 500 mA, config 1, USB Floppy > > Drive(0x0000), Y-E DATA(0x057b), rev 5.01 ***** > > > > When I connect the floppy drive to the system with the new USB2 stack, > > it causes a kernel panic. > > > > > > Here is a stack trace and dmesg output. > > > > capricorn# kgdb /boot/kernel/kernel.symbols /var/crash/vmcore.0 > > GNU gdb 6.1.1 [FreeBSD] > > Copyright 2004 Free Software Foundation, Inc. > > GDB is free software, covered by the GNU General Public License, and you > > are welcome to change it and/or distribute copies of it under certain > > conditions. Type "show copying" to see the conditions. > > There is absolutely no warranty for GDB. Type "show warranty" for details. > > This GDB was configured as "i386-marcel-freebsd"... > > > > Unread portion of the kernel message buffer: > > umass0:1:0:-1: Attached to scbus1 > > Kernel page fault with the following non-sleepable locks held: > > exclusive sleep mutex UMASS lock (UMASS lock) r = 0 (0xc0d69800) locked _at_ > > /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_transfer.c:1781 KDB: stack > > backtrace: > > db_trace_self_wrapper(c0c1f7c2,cc93ea28,c088f145,c0c0d089,6f5,...) at > > db_trace_self_wrapper+0x26 > > kdb_backtrace(c0c0d089,6f5,ffffffff,c0eabdc4,cc93ea60,...) at > > kdb_backtrace+0x29 _witness_debugger(c0c21ae3,cc93ea74,4,1,0,...) at > > _witness_debugger+0x25 witness_warn(5,0,c0c53da2,c28d3b40,c288ea90,...) at > > witness_warn+0x1fd trap(cc93eb00) at trap+0x152 > > calltrap() at calltrap+0x6 > > --- trap 0xc, eip = 0xc0b32da5, esp = 0xcc93eb40, ebp = 0xcc93eb78 --- > > bus_dmamap_load(c29a4e80,c0ef2bc0,0,24,c077e8b0,...) at > > bus_dmamap_load+0xd5 usb2_pc_load_mem(c2b87f80,24,0,4cf,c0c02651,...) at > > usb2_pc_load_mem+0x125 > > usb2_bdma_work_loop(c2b86000,c2b86400,10000ca,c2b4a900,1,...) at > > usb2_bdma_work_loop+0x2b5 > > usb2_command_wrapper(c2b86000,c2b86400,c0c0d089,55b,c28d3be4,...) at > > usb2_command_wrapper+0x116 > > usb2_start_hardware(c2b86400,c084127c,c2690b68,4,c0c1ac2a,...) at > > usb2_start_hardware+0x6eb > > umass_t_cbi_data_read_callback(c2b86400,0,c0c0d089,752,c0eabdc0,...) at > > umass_t_cbi_data_read_callback+0xfe > > usb2_callback_wrapper(c2b86014,6f6,0,c2b86000,c2b86000,...) at > > usb2_callback_wrapper+0x63a > > usb2_command_wrapper(c2b86014,0,c0c0d089,6f6,c2b86028,...) at > > usb2_command_wrapper+0x116 > > usb2_callback_proc(c2b86028,c2690b68,c0c0cc24,51,c0d704c0,...) at > > usb2_callback_proc+0x9b > > usb2_process(c2b86078,cc93ed38,c0c18395,32d,c288ea90,...) at > > usb2_process+0xde fork_exit(c07906b0,c2b86078,cc93ed38) at fork_exit+0xb8 > > fork_trampoline() at fork_trampoline+0x8 > > --- trap 0, eip = 0, esp = 0xcc93ed70, ebp = 0 --- > > > > > > Fatal trap 12: page fault while in kernel mode > > cpuid = 0; apic id = 00 > > fault virtual address = 0xbfc00000 > > fault code = supervisor read, page not present > > instruction pointer = 0x20:0xc0b32da5 > > stack pointer = 0x28:0xcc93eb40 > > frame pointer = 0x28:0xcc93eb78 > > code segment = base 0x0, limit 0xfffff, type 0x1b > > = DPL 0, pres 1, def32 1, gran 1 > > processor eflags = interrupt enabled, resume, IOPL = 0 > > current process = 1338 (USBPROC) > > lock order reversal: (Giant after non-sleepable) > > 1st 0xc0d69800 UMASS lock (UMASS lock) _at_ > > /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_transfer.c:1781 2nd 0xc0d6bfb0 > > Giant (Giant) _at_ /FreeBSD/HEAD/src/sys/dev/kbdmux/kbdmux.c:1044 KDB: stack > > backtrace: > > panic: from debugger > > cpuid = 0 > > Uptime: 2m8s > > Physical memory: 223 MB > > Dumping 40 MB: 25 9 > > > > Reading symbols from /boot/kernel/green_saver.ko...Reading symbols from > > /boot/kernel/green_saver.ko.symbols...done. done. > > Loaded symbols for /boot/kernel/green_saver.ko > > #0 doadump () at pcpu.h:246 > > 246 pcpu.h: No such file or directory. > > in pcpu.h > > (kgdb) where > > #0 doadump () at pcpu.h:246 > > #1 0xc084fe5e in boot (howto=260) > > at /FreeBSD/HEAD/src/sys/kern/kern_shutdown.c:420 > > #2 0xc0850132 in panic (fmt=Variable "fmt" is not available. > > ) > > at /FreeBSD/HEAD/src/sys/kern/kern_shutdown.c:576 > > #3 0xc04bdc27 in db_panic (addr=Could not find the frame base for > > "db_panic". ) > > at /FreeBSD/HEAD/src/sys/ddb/db_command.c:478 > > #4 0xc04be251 in db_command (last_cmdp=0xc0d3a55c, cmd_table=0x0, > > dopager=1) at /FreeBSD/HEAD/src/sys/ddb/db_command.c:445 > > #5 0xc04be3aa in db_command_loop () > > at /FreeBSD/HEAD/src/sys/ddb/db_command.c:498 > > #6 0xc04c020d in db_trap (type=12, code=0) > > at /FreeBSD/HEAD/src/sys/ddb/db_main.c:229 > > #7 0xc087d7f6 in kdb_trap (type=12, code=0, tf=0xcc93eb00) > > at /FreeBSD/HEAD/src/sys/kern/subr_kdb.c:534 > > #8 0xc0b50e0f in trap_fatal (frame=0xcc93eb00, eva=3217031168) > > at /FreeBSD/HEAD/src/sys/i386/i386/trap.c:920 > > #9 0xc0b51740 in trap (frame=0xcc93eb00) > > at /FreeBSD/HEAD/src/sys/i386/i386/trap.c:318 > > #10 0xc0b35b6b in calltrap () > > at /FreeBSD/HEAD/src/sys/i386/i386/exception.s:165 > > #11 0xc0b32da5 in bus_dmamap_load (dmat=0xc29a4e80, map=0xc0ef2bc0, > > buf=0x0, buflen=36, callback=0xc077e8b0 <usb2_pc_load_mem_cb>, > > callback_arg=0xc2b87f80, flags=0) at pmap.h:282 > > ---Type <return> to continue, or q <return> to quit--- > > #12 0xc077e415 in usb2_pc_load_mem (pc=0xc2b87f80, size=36, sync=0 '\0') > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_busdma.c:635 > > #13 0xc077e705 in usb2_bdma_work_loop (pq=0xc2b86000) > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_busdma.c:1318 > > #14 0xc0793076 in usb2_command_wrapper (pq=0xc2b86000, xfer=0xc2b86400) > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_transfer.c:2484 > > #15 0xc079434b in usb2_start_hardware (xfer=0xc2b86400) > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_transfer.c:1491 > > #16 0xc077c19e in umass_t_cbi_data_read_callback (xfer=0xc2b86400) > > at /FreeBSD/HEAD/src/sys/dev/usb2/storage/umass2.c:2414 > > #17 0xc07956da in usb2_callback_wrapper (pq=0xc2b86014) > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_transfer.c:1911 > > #18 0xc0793076 in usb2_command_wrapper (pq=0xc2b86014, xfer=0x0) > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_transfer.c:2484 > > #19 0xc079315b in usb2_callback_proc (_pm=0xc2b86028) > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_transfer.c:1785 > > #20 0xc079078e in usb2_process (arg=0xc2b86078) > > at /FreeBSD/HEAD/src/sys/dev/usb2/core/usb2_process.c:139 > > #21 0xc082ce48 in fork_exit (callout=0xc07906b0 <usb2_process>, > > arg=0xc2b86078, frame=0xcc93ed38) > > at /FreeBSD/HEAD/src/sys/kern/kern_fork.c:821 > > #22 0xc0b35be0 in fork_trampoline () > > at /FreeBSD/HEAD/src/sys/i386/i386/exception.s:270 > > (kgdb) quit > > capricorn# --- WATANABE Kazuhiro (CQG00620_at_nifty.ne.jp)Received on Mon Jan 12 2009 - 10:56:38 UTC
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