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Date:      Fri, 16 Dec 2005 12:37:07 -0500
From:      Anish Mistry <mistry.7@osu.edu>
To:        freebsd-current@freebsd.org
Subject:   Reproducable Panic on CURRENT and 6.0-RELEASE
Message-ID:  <200512161237.15148.mistry.7@osu.edu>

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Here is the offending program/code.  The interesting program is=20
avidemux_2.1_branch_anish/avidemux/avidemux2.
(It is compiled for CURRENT, and I left all the object code stuff in=20
so it's a bit large 21MB)
http://am-productions.biz/docs/avidemux_2.1_branch_anish.tgz

=46irst you'll need to compile spidermonkey to be threadsafe so add the=20
following to your lang/spidermonkey/Makefile before installing it:
LIB_DEPENDS=3D    nspr4.1:${PORTSDIR}/devel/nspr
MAKE_ARGS+=3D     JS_THREADSAFE=3DYES LDFLAGS=3D"-L${LOCALBASE}/lib=20
=2Dlpthread -lm"
CFLAGS+=3D        -I${LOCALBASE}/include/nspr

Once a threadsafe spidermonkey is installed to kill the machine you'll=20
need to:
cd avidemux_2.1_branch_anish/avidemux
=2E/avidemux2 --run new-features-test.js

On CURRENT:
kernel trap 12 with interrupts disabled

=46atal trap 12: page fault while in kernel mode
fault virtual address   =3D 0x68
fault code              =3D supervisor read, page not present
instruction pointer     =3D 0x20:0xc04e6f36
stack pointer           =3D 0x28:0xcc9edb3c
frame pointer           =3D 0x28:0xcc9edbb0
code segment            =3D base 0x0, limit 0xfffff, type 0x1b
                        =3D DPL 0, pres 1, def32 1, gran 1
processor eflags        =3D resume, IOPL =3D 0
current process         =3D 798 (gdb)
trap number             =3D 12
panic: page fault

#0  doadump () at pcpu.h:165
#1  0xc04bb7eb in boot (howto=3D260)=20
at /usr/src/sys/kern/kern_shutdown.c:399
#2  0xc04bb353 in panic (fmt=3D0xc06069a7 "%s")
    at /usr/src/sys/kern/kern_shutdown.c:555
#3  0xc05e91ba in trap_fatal (frame=3D0xcc9edafc, eva=3D104)
    at /usr/src/sys/i386/i386/trap.c:862
#4  0xc05e96d9 in trap (frame=3D
      {tf_fs =3D 8, tf_es =3D 40, tf_ds =3D 40, tf_edi =3D -1032878460, tf_=
esi=20
=3D 1, tf_ebp =3D -862004304, tf_isp =3D -862004440, tf_ebx =3D -1033297504=
,=20
tf_edx =3D -1033987232, tf_ecx =3D 4, tf_eax =3D 0, tf_trapno =3D 12, tf_er=
r=20
=3D 0, tf_eip =3D -1068601546, tf_cs =3D 32, tf_eflags =3D 65687, tf_esp =
=3D=20
=2D1032878356, tf_ss =3D -1067380424})
    at /usr/src/sys/i386/i386/trap.c:273
#5  0xc05db6fa in calltrap ()=20
at /usr/src/sys/i386/i386/exception.s:137
#6  0xc04e6f36 in kern_ptrace (td=3D0xc25e9b60, req=3D10, pid=3D1, addr=3D0=
x0,=20
data=3D17)
    at /usr/src/sys/kern/sys_process.c:802
#7  0xc04e71f0 in ptrace (td=3D0xc25e9b60, uap=3D0xcc9edd04)
    at /usr/src/sys/kern/sys_process.c:433
#8  0xc05e9ca6 in syscall (frame=3D
      {tf_fs =3D 59, tf_es =3D 59, tf_ds =3D 59, tf_edi =3D 136221752, tf_e=
si=20
=3D 796, tf_ebp =3D -1077943184, tf_isp =3D -862003868, tf_ebx =3D 796,=20
tf_edx =3D 674587084, tf_ecx =3D 674505768, tf_eax =3D 26, tf_trapno =3D 12=
,=20
tf_err =3D 2, tf_eip =3D 673978987, tf_cs =3D 51, tf_eflags =3D 518, tf_esp=
 =3D=20
=2D1077943208, tf_ss =3D 59})
    at /usr/src/sys/i386/i386/trap.c:1008
=2D--Type <return> to continue, or q <return> to quit---
#9  0xc05db74f in Xint0x80_syscall ()=20
at /usr/src/sys/i386/i386/exception.s:190
#10 0x00000033 in ?? ()


http://am-productions.biz/docs/littleguy-dmesg.gz
http://am-productions.biz/docs/littleguy-pciconf.gz



=46rom my previous email to questions with the info on 6.0-RELEASE:
I'm getting the following panic, which I can reproduce easily.  Let me=20
know what other information I should provide.  The backtrace seems=20
really short for some reason.  I get the panic when running a=20
multi-threaded application I'm developing/modifying.

kernel trap 12 with interrupts disabled

=46atal trap 12: page fault while in kernel mode
fault virtual address   =3D 0x48
fault code              =3D supervisor write, page not present
instruction pointer     =3D 0x20:0xc0510cb3
stack pointer           =3D 0x28:0xe9aebb74
frame pointer           =3D 0x28:0xe9aebbf8
code segment            =3D base 0x0, limit 0xfffff, type 0x1b
                        =3D DPL 0, pres 1, def32 1, gran 1
processor eflags        =3D resume, IOPL =3D 0
current process         =3D 7848 (gdb)
[thread pid 7848 tid 100184 ]
Stopped at      kern_ptrace+0x11e3:     andl    $0xfffbffff,0x48(%eax)
db> bt
Tracing pid 7848 tid 100184 td 0xc4302180
kern_ptrace(c4302180,a,1ea6,0,11) at kern_ptrace+0x11e3
ptrace(c4302180,e9aebd04,10,418,4) at ptrace+0x56
syscall(3b,3b,3b,bfbfe580,1ea6) at syscall+0x13d
Xint0x80_syscall() at Xint0x80_syscall+0x1f
=2D-- syscall (26, FreeBSD ELF32, ptrace), eip =3D 0x283360e7, esp =3D=20
0xbfbfe3bc, ebp
 =3D 0xbfbfe3d8 ---



=46ull panic and backtrace, and alltrace:
http://am-productions.biz/docs/bigguy-panic.gz
http://am-productions.biz/docs/bigguy-dmesg.gz
http://am-productions.biz/docs/bigguy-pciconf.gz
Kernel config:
http://am-productions.biz/docs/BIGGUY.gz


I have firewire console access to the CURRENT system, and serial=20
console access for the 6.0-RELEASE.

Thanks,

=2D-=20
Anish Mistry

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