Re: GPF on Current kernel

From: Larry Rosenman <ler_at_lerctr.org>
Date: Mon, 06 Jul 2015 07:48:09 -0500
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" <ler_at_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     
>> root_at_borg.lerctr.org:/usr/obj/usr/src/sys/LER
>> amd64
>> 
>> panic: general protection fault
>> 
>> GNU gdb 6.1.1 [FreeBSD]
>> Copyright 2004 Free Software Foundation, Inc.
>> GDB is free software, covered by the GNU General Public License, and 
>> you
>> are
>> welcome to change it and/or distribute copies of it under certain
>> conditions.
>> Type "show copying" to see the conditions.
>> There is absolutely no warranty for GDB.  Type "show warranty" for 
>> details.
>> 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     
>> root_at_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: ler_at_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: ler_at_lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688
Received on Mon Jul 06 2015 - 10:48:15 UTC

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