Date: Sat, 6 Jun 2009 10:33:40 +0000 From: "Paul B. Mahol" <onemda@gmail.com> To: georg@dts.su Cc: freebsd-questions@freebsd.org Subject: Re: Re[2]: fatal trap 12 Message-ID: <3a142e750906060333r164f64e1led86b3cfbb6e6c55@mail.gmail.com> In-Reply-To: <15010736657.20090606105811@dts.su> References: <200906021459146250568@ec.com.cn> <15010736657.20090606105811@dts.su>
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On 6/6/09, georg@dts.su <georg@dts.su> wrote:
> Hello, Freebsd-questions.
>
> After one of new crash I have this:
>
> 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 detail=
s.
> This GDB was configured as "amd64-marcel-freebsd"...
>
> Unread portion of the kernel message buffer:
>
>
> Fatal trap 12: page fault while in kernel mode
> cpuid =3D 2; apic id =3D 02
> fault virtual address =3D 0x0
> fault code =3D supervisor read data, page not present
> instruction pointer =3D 0x8:0xffffffff804c4eb8
> stack pointer =3D 0x10:0xffffff807a0478f0
> frame pointer =3D 0x10:0xffffff807a047930
> 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 32668 (perl5.10.0)
> Physical memory: 4082 MB
> Dumping 1647 MB: 1632 1616 1600 1584 1568 1552 1536 1520 1504 1488 1472 1=
456
> 1440 1424 1408 1392 1376 1360 1344 1328 1312 1296 1280 1264 1248 1232 121=
6
> 1200 1184 1168 1152 1136 1120 1104 1088 1072 1056 1040 1024 1008 992 976 =
960
> 944 928 912 896 880 864 848 832 816 800 784 768 752 736 720 704 688 672 6=
56
> 640 624 608 592 576 560 544 528 512 496 480 464 448 432 416 400 384 368 3=
52
> 336 320 304 288 272 256 240 224 208 192 176 160 144 128 112 96 80 64 48 3=
2
> 16
>
> Reading symbols from /boot/kernel/accf_http.ko...Reading symbols from
> /boot/kernel/accf_http.ko.symbols...done.
> done.
> Loaded symbols for /boot/kernel/accf_http.ko
> #0 doadump () at pcpu.h:195
> 195 __asm __volatile("movq %%gs:0,%0" : "=3Dr" (td));
> (kgdb) list *0xffffffff804c4eb8
> 0xffffffff804c4eb8 is in pfs_ioctl
> (/usr/src/sys/fs/pseudofs/pseudofs_vnops.c:265).
> 260 static int
> 261 pfs_ioctl(struct vop_ioctl_args *va)
> 262 {
> 263 struct vnode *vn =3D va->a_vp;
> 264 struct pfs_vdata *pvd =3D vn->v_data;
> 265 struct pfs_node *pn =3D pvd->pvd_pn;
> 266 struct proc *proc;
> 267 int error;
> 268
> 269 PFS_TRACE(("%s: %lx", pn->pn_name, va->a_command));
> (kgdb) backtrace
> #0 doadump () at pcpu.h:195
> #1 0xffffffff801c8dac in db_fncall (dummy1=3DVariable "dummy1" is not
> available.
> ) at /usr/src/sys/ddb/db_command.c:516
> #2 0xffffffff801c92df in db_command (last_cmdp=3D0xffffffff80b30c88,
> cmd_table=3D0x0, dopager=3D1) at /usr/src/sys/ddb/db_command.c:413
> #3 0xffffffff801c94f0 in db_command_loop () at
> /usr/src/sys/ddb/db_command.c:466
> #4 0xffffffff801cb0d9 in db_trap (type=3DVariable "type" is not availabl=
e.
> ) at /usr/src/sys/ddb/db_main.c:228
> #5 0xffffffff80554e55 in kdb_trap (type=3D12, code=3D0, tf=3D0xffffff807=
a047840)
> at /usr/src/sys/kern/subr_kdb.c:524
> #6 0xffffffff807fae80 in trap_fatal (frame=3D0xffffff807a047840, eva=3DV=
ariable
> "eva" is not available.
> ) at /usr/src/sys/amd64/amd64/trap.c:752
> #7 0xffffffff807fb254 in trap_pfault (frame=3D0xffffff807a047840, usermo=
de=3D0)
> at /usr/src/sys/amd64/amd64/trap.c:673
> #8 0xffffffff807fbc02 in trap (frame=3D0xffffff807a047840) at
> /usr/src/sys/amd64/amd64/trap.c:444
> #9 0xffffffff807df35e in calltrap () at
> /usr/src/sys/amd64/amd64/exception.S:209
> #10 0xffffffff804c4eb8 in pfs_ioctl (va=3D0xffffff807a047a10) at
> /usr/src/sys/fs/pseudofs/pseudofs_vnops.c:264
> #11 0xffffffff805bb1d3 in vn_ioctl (fp=3DVariable "fp" is not available.
> ) at vnode_if.h:437
> #12 0xffffffff80562d02 in kern_ioctl (td=3D0xffffff0006682000, fd=3D3,
> com=3D1076655123, data=3D0xffffff00ad2b7d40 "") at file.h:269
> #13 0xffffffff80563029 in ioctl (td=3D0xffffff0006682000,
> uap=3D0xffffff807a047bf0) at /usr/src/sys/kern/sys_generic.c:571
> #14 0xffffffff807fb4d6 in syscall (frame=3D0xffffff807a047c80) at
> /usr/src/sys/amd64/amd64/trap.c:900
> #15 0xffffffff807df56b in Xfast_syscall () at
> /usr/src/sys/amd64/amd64/exception.S:330
> #16 0x0000000800c9c0ec in ?? ()
> Previous frame inner to this frame (corrupt stack?)
> (kgdb)
>
>
> Can You help me? What can I do? Server crash periodicaly...
Add more debug options to kernel, because dump is not useful
with corrupted stack.
>> For this question, you must debug the kernel by Serial.
>> when fatal, you use find the error by command "bt".
>
>> ------------------
>> Dean
>> 2009-06-02
>
>> -------------------------------------------------------------
>> =B7=A2=BC=FE=C8=CB=A3=BAgeorg
>> =B7=A2=CB=CD=C8=D5=C6=DA=A3=BA2009-06-02 14:51:45
>> =CA=D5=BC=FE=C8=CB=A3=BAfreebsd-questions
>> =B3=AD=CB=CD=A3=BA
>> =D6=F7=CC=E2=A3=BAfatal trap 12
>
>> Hello, Freebsd-questions.
>
>> I use FreeBSD 7.2-STABLE amd64. About month ago system was crashed
>> with "Fatal trap 12"...
>> I bay new hardware and install new FreeBSD 7.2-STABLE amd64. cPanel
>> and ASSP (anti spam proxy). And one a day or two days have this:
>
>> Fatal trap 12: page fault while in kernel mode
>> cpuid: =3D 0; apic id =3D 00
>> fault virtual address =3D 0x8000000000
>> fault code =3D supervisor write data, page not present
>> instruction pointer =3D 0x8:0xffffffff8018b839
>> stack pointer =3D 0x10:0xffffff807a25d190
>> frame pointer =3D 0x10:0xea5f
>> 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 59397 (perl5.10.0)
>> trap number =3D 12
>
>> And alway, after crash, I see "current process =3D perl5.10.0"...
>
>> Can You help me?
>
>
> --
> Regards, mailto:georg@dts.su
> Yura
>
>
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>
--=20
Paul
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