CAM related panic on 8.2-PRERELEASE Was: Re: USB related panic on 8.2-PRERELEASE

[Oleg Nauman]

On Tue, Dec 28, 2010 at 9:49 AM, Oleg Nauman <oleg.nauman at gmail.com> wrote:
> On Fri, Dec 10, 2010 at 8:15 PM, Hans Petter Selasky <hselasky at c2i.net> wrote:
>> Hi,
>
>  Hello,
>
>>
>> I think this is a known issue which never got fixed. Please try the attached
>> patch and report back.
>>
>> XXX_SAFE != XXX_REAL_SAFE :-)
>
>  My laptop experienced a crash again, this time it seems CAM related:
>
> Unread portion of the kernel message buffer:
> umass0: at uhub5, port 3, addr 2 (disconnected)
> (probe0:umass-sim0:0:0:0): AutoSense failed
> kernel trap 12 with interrupts disabled
>
>
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address   = 0x14
> fault code              = supervisor read, page not present
> instruction pointer     = 0x20:0xc0736482
> stack pointer           = 0x28:0xc5225bd4
> frame pointer           = 0x28:0xc5225bec
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                        = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = resume, IOPL = 0
> current process         = 12 (swi2: cambio)
> trap number             = 12
> panic: page fault
> cpuid = 0
> KDB: stack backtrace:
> #0 0xc072ac57 at kdb_backtrace+0x47
> #1 0xc06ffe97 at panic+0x117
> #2 0xc09a31f3 at trap_fatal+0x323
> #3 0xc09a3602 at trap+0x152
> #4 0xc098c87c at calltrap+0x6
> #5 0xc06f25e9 at _mtx_unlock_sleep+0x49
> #6 0xc06f2669 at _mtx_unlock_flags+0x49
> #7 0xc0473bb0 at camisr+0x110
> #8 0xc06de98c at intr_event_execute_handlers+0x14c
> #9 0xc06df77e at ithread_loop+0xbe
> #10 0xc06dccde at fork_exit+0xee
> #11 0xc098c8f4 at fork_trampoline+0x8
> Uptime: 6m55s
> Physical memory: 2027 MB
> Dumping 121 MB: 106 90 74 58 42 26 10
>
> Reading symbols from /boot/modules/bwn_v4_ucode.ko...Reading symbols
> from /boot/modules/bwn_v4_ucode.ko.symbols...done.
> done.
> Loaded symbols for /boot/modules/bwn_v4_ucode.ko
> Reading symbols from /boot/modules/cuse4bsd.ko...done.
> Loaded symbols for /boot/modules/cuse4bsd.ko
> #0  doadump () at pcpu.h:231
> 231     pcpu.h: No such file or directory.
>        in pcpu.h
> (kgdb) #0  doadump () at pcpu.h:231
> #1  0xc06ffc93 in boot (howto=260) at ../../../kern/kern_shutdown.c:419
> #2  0xc06ffed0 in panic (fmt=Variable "fmt" is not available.
> ) at ../../../kern/kern_shutdown.c:592
> #3  0xc09a31f3 in trap_fatal (frame=0xc5225b94, eva=20)
>    at ../../../i386/i386/trap.c:946
> #4  0xc09a3602 in trap (frame=0xc5225b94) at ../../../i386/i386/trap.c:326
> #5  0xc098c87c in calltrap () at ../../../i386/i386/exception.s:166
> #6  0xc0736482 in turnstile_broadcast (ts=0x0, queue=0)
>    at ../../../kern/subr_turnstile.c:831
> #7  0xc06f25e9 in _mtx_unlock_sleep (m=0xc67e170c, opts=0,
>    file=0xc0a04b40 "../../../cam/cam_xpt.c", line=4715)
>    at ../../../kern/kern_mutex.c:675
> #8  0xc06f2669 in _mtx_unlock_flags (m=0xc67e170c, opts=0,
>    file=0xc0a04b40 "../../../cam/cam_xpt.c", line=4715)
>    at ../../../kern/kern_mutex.c:227
> #9  0xc0473bb0 in camisr (dummy=0x0) at ../../../cam/cam_xpt.c:4715
> #10 0xc06de98c in intr_event_execute_handlers (p=0xc556f7f8, ie=0xc56a8800)
>    at ../../../kern/kern_intr.c:1220
> #11 0xc06df77e in ithread_loop (arg=0xc556e2b0)
>    at ../../../kern/kern_intr.c:1233
> #12 0xc06dccde in fork_exit (callout=0xc06df6c0 <ithread_loop>,
>    arg=0xc556e2b0, frame=0xc5225d28) at ../../../kern/kern_fork.c:845
> #13 0xc098c8f4 in fork_trampoline () at ../../../i386/i386/exception.s:273
> (kgdb)


 Filed PR 153514 for better the things tracking.

Is it possible to look into this issue?

>
> It happens with
> device umass
> enabled in my kernel config file
>
>>
>> --HPS
>>
>> On Thursday 09 December 2010 12:02:48 Oleg Nauman wrote:
>>> On Wed, Dec 8, 2010 at 7:05 PM, Oleg Nauman <oleg.nauman at gmail.com> wrote:
>>> >  Hello Hans,
>>> >
>>> > On Wed, Dec 8, 2010 at 3:33 PM, Hans Petter Selasky <hselasky at c2i.net>
>> wrote:
>>> >> On Wednesday 08 December 2010 11:41:28 Oleg Nauman wrote:
>>> >>> Hello,
>>> >>>
>>> >>> Unfortunately my notebook experienced the crash during the attempts to
>>> >>> attach EVDO modem supplied with builtin MicroSD cardreader.
>>> >>> Related core.txt file is attached as well as 'usbconfig
>>> >>> dump_all_config_desc' output (all_config.txt)
>>> >>> USB subsystem reports endless USB_ERR_STALLED events during attempts
>>> >>> to attach umass device, but attaches it finally ( sometimes it
>>> >>> attached after two attempts, sometimes it trying to attach during
>>> >>> 15-20 minutes ).MicroSD is inserted there, without any effect  on
>>> >>> attachment attempts though.
>>> >>
>>> >> Hi,
>>> >>
>>> >> Can you reproduce the panic using a kernel built with INVARIANTS options
>>> >> and DEBUG_MEMGUARD .
>>> >
>>> >  I rebuilt my kernel with options you mentioned ( have added
>>> > INVARIANT_SUPPORT required  by INVARIANTS though )
>>> >
>>> > Waiting on panic..
>>>
>>>  Got it finally ( core.txt file is attached )
>>>
>>
>