Date: Sat, 6 Jun 2009 14:39:16 +0400 From: georg@dts.su To: freebsd-questions@freebsd.org Subject: Re[4]: fatal trap 12 Message-ID: <599293441.20090606143916@dts.su> In-Reply-To: <3a142e750906060333r164f64e1led86b3cfbb6e6c55@mail.gmail.com> References: <200906021459146250568@ec.com.cn> <15010736657.20090606105811@dts.su> <3a142e750906060333r164f64e1led86b3cfbb6e6c55@mail.gmail.com>
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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 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 detai=
ls.
>> 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 =
1456
>> 1440 1424 1408 1392 1376 1360 1344 1328 1312 1296 1280 1264 1248 1232 12=
16
>> 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 =
656
>> 640 624 608 592 576 560 544 528 512 496 480 464 448 432 416 400 384 368 =
352
>> 336 320 304 288 272 256 240 224 208 192 176 160 144 128 112 96 80 64 48 =
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 availab=
le.
>> ) at /usr/src/sys/ddb/db_main.c:228
>> #5 0xffffffff80554e55 in kdb_trap (type=3D12, code=3D0, tf=3D0xffffff80=
7a047840)
>> at /usr/src/sys/kern/subr_kdb.c:524
>> #6 0xffffffff807fae80 in trap_fatal (frame=3D0xffffff807a047840, eva=3D=
Variable
>> "eva" is not available.
>> ) at /usr/src/sys/amd64/amd64/trap.c:752
>> #7 0xffffffff807fb254 in trap_pfault (frame=3D0xffffff807a047840, userm=
ode=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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