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Date:      Tue, 18 Mar 2014 21:07:57 -0700
From:      Adrian Chadd <adrian@freebsd.org>
To:        Aleksandr Rybalko <ray@ddteam.net>
Cc:        Kevin Oberman <rkoberman@gmail.com>, Aleksandr Rybalko <ray@freebsd.org>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>, John Baldwin <jhb@freebsd.org>
Subject:   Re: Clock issues and crash on resume on 10-Stable r263062M
Message-ID:  <CAJ-VmondROfMX=7A7FCsr_e=vV75phnsnDz7TG0K6UhX6a=R7A@mail.gmail.com>
In-Reply-To: <20140318234623.61a99182.ray@ddteam.net>
References:  <CAN6yY1seOSacdXY3RKOgEdY_v%2BzD=vqMAfnsXH96Ft8w%2BOoJew@mail.gmail.com> <201403181527.17100.jhb@freebsd.org> <CAN6yY1tGaEwQ9cxii9F6ub2c=UD-wdrDRKT_LtZsBrGyDb%2B0nw@mail.gmail.com> <20140318234623.61a99182.ray@ddteam.net>

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Well, changing the default is cool, but there's still some odd bug
there that could do with chasing down. :)


-a

On 18 March 2014 14:46, Aleksandr Rybalko <ray@ddteam.net> wrote:
> On Tue, 18 Mar 2014 14:38:31 -0700
> Kevin Oberman <rkoberman@gmail.com> wrote:
>
>> On Tue, Mar 18, 2014 at 12:27 PM, John Baldwin <jhb@freebsd.org>
>> wrote:
>>
>> > On Saturday, March 15, 2014 3:44:46 pm Kevin Oberman wrote:
>> > > 2. The time does not update after resume. After about 2 seconds,
>> > > ehe
>> > system
>> > > crashes.
>> > > Fatal trap 12: page fault while in kernel mode
>> > > cpuid = 0; apic id = 00
>> > > fault virtual address   = 0x30
>> > > fault code              = supervisor read data, page not present
>> > > instruction pointer     = 0x20:0xffffffff808c9ef3
>> > > stack pointer           = 0x28:0xfffffe00f13548e0
>> > > frame pointer           = 0x28:0xfffffe00f13549b0
>> > > code segment            = base 0x0, limit 0xfffff, type 0x1b
>> > >                         = DPL 0, pres 1, long 1, def32 0, gran 1
>> > > processor eflags        = interrupt enabled, resume, IOPL = 0
>> > > current process         = 12 (swi4: clock)
>> > > trap number             = 12
>> > > panic: page fault
>> > > cpuid = 0
>> > > KDB: stack backtrace:
>> > > #0 0xffffffff808ed460 at kdb_backtrace+0x60
>> > > #1 0xffffffff808b4e35 at panic+0x155
>> > > #2 0xffffffff80c97022 at trap_fatal+0x3a2
>> > > #3 0xffffffff80c972f9 at trap_pfault+0x2c9
>> > > #4 0xffffffff80c96a8b at trap+0x5bb
>> > > #5 0xffffffff80c7dd42 at calltrap+0x8
>> > > #6 0xffffffff808ca304 at softclock+0x94
>> > > #7 0xffffffff8088929b at intr_event_execute_handlers+0xab
>> > > #8 0xffffffff808896e6 at ithread_loop+0x96
>> > > #9 0xffffffff80886f4a at fork_exit+0x9a
>> > > #10 0xffffffff80c7e27e at fork_trampoline+0xe
>> > > [...]
>> > > #0  doadump (textdump=<value optimized out>) at pcpu.h:219
>> > > 219     pcpu.h: No such file or directory.
>> > >         in pcpu.h
>> > > (kgdb) #0  doadump (textdump=<value optimized out>) at pcpu.h:219
>> > > #1  0xffffffff808b4ab0 in kern_reboot (howto=260)
>> > >     at /usr/src/sys/kern/kern_shutdown.c:452
>> > > #2  0xffffffff808b4e74 in panic (fmt=<value optimized out>)
>> > >     at /usr/src/sys/kern/kern_shutdown.c:759
>> > > #3  0xffffffff80c97022 in trap_fatal (frame=<value optimized out>,
>> > >     eva=<value optimized out>)
>> > > at /usr/src/sys/amd64/amd64/trap.c:875
>> > > #4  0xffffffff80c972f9 in trap_pfault (frame=0xfffffe00f1354830,
>> > usermode=0)
>> > >     at /usr/src/sys/amd64/amd64/trap.c:692
>> > > #5  0xffffffff80c96a8b in trap (frame=0xfffffe00f1354830)
>> > >     at /usr/src/sys/amd64/amd64/trap.c:456
>> > > #6  0xffffffff80c7dd42 in calltrap ()
>> > >     at /usr/src/sys/amd64/amd64/exception.S:232
>> > > #7  0xffffffff808c9ef3 in softclock_call_cc (c=0xffffffff813834b8,
>> > >     cc=0xffffffff81527680, direct=0) at
>> > /usr/src/sys/kern/kern_timeout.c:701
>> > > #8  0xffffffff808ca304 in softclock (arg=0xffffffff81527680)
>> > >     at /usr/src/sys/kern/kern_timeout.c:810
>> >
>> > This is actually a crash in newcons.  Try setting
>> > kern.vt.suspendswitch to 0
>> > as a workaround.
>> >
>> > --
>> > John Baldwin
>> >
>>
>> Ack! I had forgotten seeing the thread on this just a while back,
>> before vt was committed to 10.
>>
>> Thanks so much!
>> --
>> R. Kevin Oberman, Network Engineer, Retired
>> E-mail: rkoberman@gmail.com
>
> Looks like I have to invert default for it :)
>
> Sorry for making such problems.
>
> WBW
> --
> Aleksandr Rybalko <ray@ddteam.net>
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