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Date:      Fri, 20 Sep 2019 15:46:10 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 240710] Fatal trap 12: page fault while in kernel mode
Message-ID:  <bug-240710-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240710

            Bug ID: 240710
           Summary: Fatal trap 12: page fault while in kernel mode
           Product: Base System
           Version: 12.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: freebsd@sysctl.cz

Created attachment 207653
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D207653&action=
=3Dedit
memory.good.state.txt

I wanted upgrade memory from 4GB to 8GB but=20
i have still problem with panics. I did memory test
to 8g but nothig error in memory.=20
In my opinion motherboard dont support timing 8g memory with other timing
memory
and kernel then have this problem. In memout file is my current good state =
with
4GB.
I have problem with type of memory 8GB 2Rx8 PC3l 12800S - 11 - 13 - F3
HMT41GS6BFA8A - PB NO AA


FreeBSD  12.0-RELEASE-p10 FreeBSD 12.0-RELEASE-p10 GENERIC  amd64

Fatal trap 12: page fault while in kernel mode
cpuid =3D 0; apic id =3D 00
fault virtual address   =3D 0x80023b660
fault code              =3D supervisor read data, page not present
instruction pointer     =3D 0x20:0xffffffff80b7ac6d
stack pointer           =3D 0x28:0xfffffe003ef45970
frame pointer           =3D 0x28:0xfffffe003ef459e0
code segment            =3D base 0x0, limit 0xfffff, type 0x1b
                        =3D DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        =3D interrupt enabled, resume, IOPL =3D 0
current process         =3D 12 (swi4: clock (0))
trap number             =3D 12
panic: page fault
cpuid =3D 0
time =3D 1568990550
KDB: stack backtrace:
#0 0xffffffff80be78d7 at kdb_backtrace+0x67
#1 0xffffffff80b9b4b3 at vpanic+0x1a3
#2 0xffffffff80b9b303 at panic+0x43
#3 0xffffffff81074bff at trap_fatal+0x35f
#4 0xffffffff81074c59 at trap_pfault+0x49
#5 0xffffffff8107427e at trap+0x29e
#6 0xffffffff8104f625 at calltrap+0x8
#7 0xffffffff80dd7822 at frag6_slowtimo+0x82
#8 0xffffffff80c26064 at pfslowtimo+0x54
#9 0xffffffff80bb549e at softclock_call_cc+0x12e
#10 0xffffffff80bb5989 at softclock+0x79
#11 0xffffffff80b5ed67 at ithread_loop+0x1a7
#12 0xffffffff80b5be83 at fork_exit+0x83
#13 0xffffffff8105061e at fork_trampoline+0xe
Uptime: 10s
Dumping 452 out of 7943 MB:..4%..11%..22%..32%..43%..54%..61%..71%..82%..92%

__curthread () at ./machine/pcpu.h:234
234     ./machine/pcpu.h: No such file or directory.
(kgdb) bt
#0  __curthread () at ./machine/pcpu.h:234
#1  doadump (textdump=3D<optimized out>) at /usr/src/sys/kern/kern_shutdown=
.c:366
#2  0xffffffff80b9b09b in kern_reboot (howto=3D260) at
/usr/src/sys/kern/kern_shutdown.c:446
#3  0xffffffff80b9b513 in vpanic (fmt=3D<optimized out>, ap=3D0xfffffe003ef=
456c0)
at /usr/src/sys/kern/kern_shutdown.c:872
#4  0xffffffff80b9b303 in panic (fmt=3D<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:799
#5  0xffffffff81074bff in trap_fatal (frame=3D0xfffffe003ef458b0,
eva=3D34362078816) at /usr/src/sys/amd64/amd64/trap.c:929
#6  0xffffffff81074c59 in trap_pfault (frame=3D0xfffffe003ef458b0, usermode=
=3D0) at
/usr/src/sys/amd64/amd64/trap.c:765
#7  0xffffffff8107427e in trap (frame=3D0xfffffe003ef458b0) at
/usr/src/sys/amd64/amd64/trap.c:441
#8  <signal handler called>
#9  __mtx_lock_sleep (c=3D0xfffffe00025934e0, v=3D<optimized out>) at
/usr/src/sys/kern/kern_mutex.c:565
#10 0xffffffff80dd7822 in frag6_slowtimo () at
/usr/src/sys/netinet6/frag6.c:849
#11 0xffffffff80c26064 in pfslowtimo (arg=3D0xfffffe00025934e0) at
/usr/src/sys/kern/uipc_domain.c:508
#12 0xffffffff80bb549e in softclock_call_cc (c=3D<optimized out>,
cc=3D0xffffffff81ff3f00 <cc_cpu>, direct=3D<optimized out>)
    at /usr/src/sys/kern/kern_timeout.c:731
#13 0xffffffff80bb5989 in softclock (arg=3D0xffffffff81ff3f00 <cc_cpu>) at
/usr/src/sys/kern/kern_timeout.c:869
#14 0xffffffff80b5ed67 in intr_event_execute_handlers (p=3D<optimized out>,
ie=3D<optimized out>) at /usr/src/sys/kern/kern_intr.c:1043
#15 ithread_execute_handlers (p=3D<optimized out>, ie=3D<optimized out>) at
/usr/src/sys/kern/kern_intr.c:1056
#16 ithread_loop (arg=3D<optimized out>) at /usr/src/sys/kern/kern_intr.c:1=
136
#17 0xffffffff80b5be83 in fork_exit (callout=3D0xffffffff80b5ebc0 <ithread_=
loop>,
arg=3D0xfffff80003060d80, frame=3D0xfffffe003ef45c00)
    at /usr/src/sys/kern/kern_fork.c:1057
#18 <signal handler called>
(kgdb)

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