Date: Sat, 6 Jun 2009 13:46:59 +0300 From: Valentin Bud <valentin.bud@gmail.com> To: georg@dts.su Cc: freebsd-questions@freebsd.org Subject: Re: Re[4]: fatal trap 12 Message-ID: <139b44430906060346s2aa03a11oe6cf71da41348521@mail.gmail.com> In-Reply-To: <599293441.20090606143916@dts.su> References: <200906021459146250568@ec.com.cn> <15010736657.20090606105811@dts.su> <3a142e750906060333r164f64e1led86b3cfbb6e6c55@mail.gmail.com> <599293441.20090606143916@dts.su>
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2009/6/6 <georg@dts.su>
> Hello.
>
> What options I must add to kernel? Can You tell me what I must do when
> system crash next time?
>
> > 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 y=
ou
> 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 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 147=
2
> 1456
> >> 1440 1424 1408 1392 1376 1360 1344 1328 1312 1296 1280 1264 1248 1232
> 1216
> >> 1200 1184 1168 1152 1136 1120 1104 1088 1072 1056 1040 1024 1008 992 9=
76
> 960
> >> 944 928 912 896 880 864 848 832 816 800 784 768 752 736 720 704 688 67=
2
> 656
> >> 640 624 608 592 576 560 544 528 512 496 480 464 448 432 416 400 384 36=
8
> 352
> >> 336 320 304 288 272 256 240 224 208 192 176 160 144 128 112 96 80 64 4=
8
> 32
> >> 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
> available.
> >> ) at /usr/src/sys/ddb/db_main.c:228
> >> #5 0xffffffff80554e55 in kdb_trap (type=3D12, code=3D0,
> tf=3D0xffffff807a047840)
> >> at /usr/src/sys/kern/subr_kdb.c:524
> >> #6 0xffffffff807fae80 in trap_fatal (frame=3D0xffffff807a047840,
> eva=3DVariable
> >> "eva" is not available.
> >> ) at /usr/src/sys/amd64/amd64/trap.c:752
> >> #7 0xffffffff807fb254 in trap_pfault (frame=3D0xffffff807a047840,
> usermode=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 availabl=
e.
> >> ) 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. cPane=
l
> >>> 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 pres=
ent
> >>> 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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>
Hello georg,
Here is the glossary of debugging kernel options:
http://www.freebsd.org/doc/en/books/developers-handbook/kerneldebug-options=
.html
.
v
--=20
network warrior since 2005
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