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Date:      Fri, 16 May 2003 11:19:05 -0400 (EDT)
From:      Andre Guibert de Bruet <andy@siliconlandmark.com>
To:        current@freebsd.org
Subject:   Re: USB CF Reader causes Fatal trap 12
Message-ID:  <20030516111845.M28986@alpha.siliconlandmark.com>
In-Reply-To: <20030516100604.H28986@alpha.siliconlandmark.com>
References:  <20030516100604.H28986@alpha.siliconlandmark.com>

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No go on the backtrace. It appears as if it got corrupted somehow...

> Andre Guibert de Bruet | Enterprise Software Consultant >
> Silicon Landmark, LLC. | http://siliconlandmark.com/    >

On Fri, 16 May 2003, Andre Guibert de Bruet wrote:

> Hi,
>
> The reader I'm using is a Dazzle 6 in 1 unit. It has worked flawlessly up
> until last night's USB commit. At last boot, it came up as:
>
> > umass0: SCM Microsystems Inc. eUSB ORCA Quad Reader, rev 1.10/5.07, addr 4
> > da0 at umass-sim0 bus 0 target 0 lun 0
> > da0: <eUSB Compact Flash 5.07> Removable Direct Access SCSI-2 device
> > da0: 1.000MB/s transfers
> > da0: 122MB (250368 512 byte sectors: 64H 32S/T 122C)
>
> Upon connection, at the console:
>
> [... some messages that i couldn't copy and paste in time...]
> umass0: Invalid CSW: tag 0 should be 10
> (da0:umass-sim0:0:0:0): AutoSense Failed
> (da0:umass-sim0:0:0:0): removing device entry
> Opened disk da0 -> 5
>
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; lapic.id = 00000000
> fault virtual address   = 0x1c
> fault code              = supervisor read, page not present
> instruction pointer     = 0x8:0xc01daf29
> stack pointer           = 0x10:0xe42e8b5c
> frame pointer           = 0x10:0xe42e8b84
> 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         = 2 (g_event)
> kernel: type 12 trap, code=0
> Stopped at      g_disk_access+0xa9:     cmpl    $0,0x1c(%esi)
> db> call doadump
> Dumping 3583 MB
> ata3: resetting devices ..
> done
>  16 32 48 64 80 [... snip ...] 3568
> Dump complete
> 0xf
>
> db> tr
> g_disk_access(caafdd80,1,0,0,0) at g_disk_access+0xa9
> g_access_rel(cb598b80,1,0,0,e42e8c30) at g_access_rel+0x20e
> g_slice_new(c0406b20,8,caafdd80,e42e8c2c,e42e8c30) at g_slice_new+0xdb
> g_bsd_taste(c0406b20,caafdd80,0,102,caafdd00) at g_bsd_taste+0xa9
> g_new_provider_event(caafdd80,0,c03a3701,b2,66666667) at g_new_provider_event+0x9c
> one_event(e42e8d14,c01dd7a5,c041b30c,0,4c) at one_event+0x20a
> g_run_events(c041b30c,0,4c,c03a3a23,a) at g_run_events+0x8
> g_event_procbody(0,e42e8d48,c03a5629,2f8,c60f7e40) at g_event_procbody+0x45
> fork_exit(c01dd760,0,e42e8d48) at fork_exit+0xc0
> fork_trampoline() at fork_trampoline+0x1a
> --- trap 0x1, eip = 0, esp = 0xe42e8d7c, ebp = 0 ---
>
> GDB trace to follow. Stay tuned...
>
> Regards,
>
> > Andre Guibert de Bruet | Enterprise Software Consultant >
> > Silicon Landmark, LLC. | http://siliconlandmark.com/    >
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