actually, the following are interesting further down:
#13 0xffffffff808af473 in sys_write (td=0xdeadc0dedeadc116,
    uap=<value optimized out>) at /usr/src/sys/kern/sys_generic.c:398
#14 0xffffffff80b57a6d in amd64_syscall (td=0xfffff80736fda4c0, traced=0)
    at subr_syscall.c:133

the td value.

What would you suggest?  This has become intermittent :(


On 2015-07-06 00:42, K. Macy wrote:
The value of the mutex in the stack trace indicates that it's a use after free. There are various memory debugging options (memguard, redzone) that
may help track it down.

-K
On Jul 5, 2015 2:37 PM, "Larry Rosenman" <l...@lerctr.org> wrote:

I've gotten a couple of these:

borg.lerctr.org dumped core - see /var/crash/vmcore.3

Sun Jul  5 16:32:12 CDT 2015

FreeBSD borg.lerctr.org 11.0-CURRENT FreeBSD 11.0-CURRENT #1 r285159: Sun Jul 5 09:35:33 CDT 2015 r...@borg.lerctr.org:/usr/obj/usr/src/sys/LER
amd64

panic: general protection fault

GNU gdb 6.1.1 [FreeBSD]
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This GDB was configured as "amd64-marcel-freebsd"...

Unread portion of the kernel message buffer:


Fatal trap 9: general protection fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer     = 0x20:0xffffffff8083a15f
stack pointer           = 0x28:0xfffffe100ca1d8a0
frame pointer           = 0x28:0xfffffe100ca1d8e0
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         = 73971 (make)
trap number             = 9
panic: general protection fault
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
0xfffffe100ca1d490
vpanic() at vpanic+0x189/frame 0xfffffe100ca1d510
panic() at panic+0x43/frame 0xfffffe100ca1d570
trap_fatal() at trap_fatal+0x355/frame 0xfffffe100ca1d5d0
trap() at trap+0x813/frame 0xfffffe100ca1d7e0
calltrap() at calltrap+0x8/frame 0xfffffe100ca1d7e0
--- trap 0x9, rip = 0xffffffff8083a15f, rsp = 0xfffffe100ca1d8a0, rbp =
0xfffffe100ca1d8e0 ---
__mtx_lock_flags() at __mtx_lock_flags+0x4f/frame 0xfffffe100ca1d8e0
doselwakeup() at doselwakeup+0xb5/frame 0xfffffe100ca1d920
pipeselwakeup() at pipeselwakeup+0x46/frame 0xfffffe100ca1d940
pipe_write() at pipe_write+0x13d2/frame 0xfffffe100ca1d9f0
dofilewrite() at dofilewrite+0x8a/frame 0xfffffe100ca1da40
kern_writev() at kern_writev+0x68/frame 0xfffffe100ca1da90
sys_write() at sys_write+0x63/frame 0xfffffe100ca1dae0
amd64_syscall() at amd64_syscall+0x25d/frame 0xfffffe100ca1dbf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe100ca1dbf0
--- syscall (4, FreeBSD ELF64, sys_write), rip = 0x45ae8a, rsp =
0x7fffffffd328, rbp = 0x7fffffffd350 ---
Uptime: 6h39m51s
Dumping 3186 out of 64460
MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

Reading symbols from /boot/kernel/zfs.ko.symbols...done.
Loaded symbols for /boot/kernel/zfs.ko.symbols
Reading symbols from /boot/kernel/opensolaris.ko.symbols...done.
Loaded symbols for /boot/kernel/opensolaris.ko.symbols
Reading symbols from /boot/kernel/linux.ko.symbols...done.
Loaded symbols for /boot/kernel/linux.ko.symbols
Reading symbols from /boot/kernel/linux_common.ko.symbols...done.
Loaded symbols for /boot/kernel/linux_common.ko.symbols
Reading symbols from /boot/kernel/if_lagg.ko.symbols...done.
Loaded symbols for /boot/kernel/if_lagg.ko.symbols
Reading symbols from /boot/kernel/snd_envy24ht.ko.symbols...done.
Loaded symbols for /boot/kernel/snd_envy24ht.ko.symbols
Reading symbols from /boot/kernel/snd_spicds.ko.symbols...done.
Loaded symbols for /boot/kernel/snd_spicds.ko.symbols
Reading symbols from /boot/kernel/coretemp.ko.symbols...done.
Loaded symbols for /boot/kernel/coretemp.ko.symbols
Reading symbols from /boot/kernel/ichsmb.ko.symbols...done.
Loaded symbols for /boot/kernel/ichsmb.ko.symbols
Reading symbols from /boot/kernel/smbus.ko.symbols...done.
Loaded symbols for /boot/kernel/smbus.ko.symbols
Reading symbols from /boot/kernel/ichwd.ko.symbols...done.
Loaded symbols for /boot/kernel/ichwd.ko.symbols
Reading symbols from /boot/kernel/cpuctl.ko.symbols...done.
Loaded symbols for /boot/kernel/cpuctl.ko.symbols
Reading symbols from /boot/kernel/cryptodev.ko.symbols...done.
Loaded symbols for /boot/kernel/cryptodev.ko.symbols
Reading symbols from /boot/kernel/dtraceall.ko.symbols...done.
Loaded symbols for /boot/kernel/dtraceall.ko.symbols
Reading symbols from /boot/kernel/profile.ko.symbols...done.
Loaded symbols for /boot/kernel/profile.ko.symbols
Reading symbols from /boot/kernel/dtrace.ko.symbols...done.
Loaded symbols for /boot/kernel/dtrace.ko.symbols
Reading symbols from /boot/kernel/systrace_freebsd32.ko.symbols...done.
Loaded symbols for /boot/kernel/systrace_freebsd32.ko.symbols
Reading symbols from /boot/kernel/systrace.ko.symbols...done.
Loaded symbols for /boot/kernel/systrace.ko.symbols
Reading symbols from /boot/kernel/sdt.ko.symbols...done.
Loaded symbols for /boot/kernel/sdt.ko.symbols
Reading symbols from /boot/kernel/lockstat.ko.symbols...done.
Loaded symbols for /boot/kernel/lockstat.ko.symbols
Reading symbols from /boot/kernel/fasttrap.ko.symbols...done.
Loaded symbols for /boot/kernel/fasttrap.ko.symbols
Reading symbols from /boot/kernel/fbt.ko.symbols...done.
Loaded symbols for /boot/kernel/fbt.ko.symbols
Reading symbols from /boot/kernel/dtnfscl.ko.symbols...done.
Loaded symbols for /boot/kernel/dtnfscl.ko.symbols
Reading symbols from /boot/kernel/dtmalloc.ko.symbols...done.
Loaded symbols for /boot/kernel/dtmalloc.ko.symbols
Reading symbols from /boot/modules/vboxdrv.ko...done.
Loaded symbols for /boot/modules/vboxdrv.ko
Reading symbols from /boot/modules/nvidia.ko...done.
Loaded symbols for /boot/modules/nvidia.ko
Reading symbols from /boot/kernel/ipmi.ko.symbols...done.
Loaded symbols for /boot/kernel/ipmi.ko.symbols
Reading symbols from /boot/kernel/ipmi_linux.ko.symbols...done.
Loaded symbols for /boot/kernel/ipmi_linux.ko.symbols
Reading symbols from /boot/kernel/radeonkms.ko.symbols...done.
Loaded symbols for /boot/kernel/radeonkms.ko.symbols
Reading symbols from /boot/kernel/iicbb.ko.symbols...done.
Loaded symbols for /boot/kernel/iicbb.ko.symbols
Reading symbols from /boot/kernel/iicbus.ko.symbols...done.
Loaded symbols for /boot/kernel/iicbus.ko.symbols
Reading symbols from /boot/kernel/iic.ko.symbols...done.
Loaded symbols for /boot/kernel/iic.ko.symbols
Reading symbols from /boot/kernel/drm2.ko.symbols...done.
Loaded symbols for /boot/kernel/drm2.ko.symbols
Reading symbols from /boot/kernel/radeonkmsfw_R100_cp.ko.symbols...done.
Loaded symbols for /boot/kernel/radeonkmsfw_R100_cp.ko.symbols
Reading symbols from /boot/kernel/uhid.ko.symbols...done.
Loaded symbols for /boot/kernel/uhid.ko.symbols
Reading symbols from /boot/modules/vboxnetflt.ko...done.
Loaded symbols for /boot/modules/vboxnetflt.ko
Reading symbols from /boot/kernel/netgraph.ko.symbols...done.
Loaded symbols for /boot/kernel/netgraph.ko.symbols
Reading symbols from /boot/kernel/ng_ether.ko.symbols...done.
Loaded symbols for /boot/kernel/ng_ether.ko.symbols
Reading symbols from /boot/modules/vboxnetadp.ko...done.
Loaded symbols for /boot/modules/vboxnetadp.ko
#0  doadump (textdump=1) at pcpu.h:221
221     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) #0  doadump (textdump=1) at pcpu.h:221
#1  0xffffffff80855d55 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:447
#2  0xffffffff80856348 in vpanic (fmt=<value optimized out>,
    ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:744
#3  0xffffffff80856393 in panic (fmt=0x0)
    at /usr/src/sys/kern/kern_shutdown.c:675
#4  0xffffffff80b57275 in trap_fatal (frame=<value optimized out>,
    eva=<value optimized out>) at /usr/src/sys/amd64/amd64/trap.c:853
#5  0xffffffff80b56f03 in trap (frame=<value optimized out>)
    at /usr/src/sys/amd64/amd64/trap.c:201
#6  0xffffffff80b37142 in calltrap ()
    at /usr/src/sys/amd64/amd64/exception.S:235
#7 0xffffffff8083a15f in __mtx_lock_flags (c=0xdeadc0dedeadc116, opts=0, file=0xffffffff80da2bc8 "/usr/src/sys/kern/sys_generic.c", line=1808)
    at /usr/src/sys/kern/kern_mutex.c:211
#8 0xffffffff808b1b25 in doselwakeup (sip=0xfffff8019bd5b0b8, pri=104)
    at /usr/src/sys/kern/sys_generic.c:1808
#9  0xffffffff808b4b86 in pipeselwakeup (cpipe=0xfffff8019bd5b000)
    at /usr/src/sys/kern/sys_pipe.c:622
#10 0xffffffff808b3892 in pipe_write (fp=0xfffff80027c3d280,
    uio=<value optimized out>, active_cred=<value optimized out>,
flags=1808,
    td=0xfffff80736fda4c0) at /usr/src/sys/kern/sys_pipe.c:1314
#11 0xffffffff808af7da in dofilewrite (td=0xfffff80736fda4c0, fd=1,
    fp=0xfffff80027c3d280, auio=0xfffffe100ca1dab0,
    offset=<value optimized out>, flags=0) at file.h:310
#12 0xffffffff808af4e8 in kern_writev (td=0xfffff80736fda4c0, fd=1,
    auio=0xfffffe100ca1dab0) at /usr/src/sys/kern/sys_generic.c:485
#13 0xffffffff808af473 in sys_write (td=0xdeadc0dedeadc116,
    uap=<value optimized out>) at /usr/src/sys/kern/sys_generic.c:398
#14 0xffffffff80b57a6d in amd64_syscall (td=0xfffff80736fda4c0, traced=0)
    at subr_syscall.c:133
#15 0xffffffff80b3742b in Xfast_syscall ()
    at /usr/src/sys/amd64/amd64/exception.S:395
#16 0x000000000045ae8a in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language:  auto; currently minimal
(kgdb)

Ideas?


FreeBSD borg.lerctr.org 11.0-CURRENT FreeBSD 11.0-CURRENT #1 r285159: Sun Jul 5 09:35:33 CDT 2015 r...@borg.lerctr.org:/usr/obj/usr/src/sys/LER
amd64 1100077 1100077
--
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: l...@lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688
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Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: l...@lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688
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