mplayer causes panic: page fault

Stefan Ehmann shoesoft at
Mon May 28 18:57:55 UTC 2007

I get a panic when playing certain .wmv files (wmv9dmo) with mplayer on my 
i386 notebook.

This is on a few days old current, all ports deleted and rebuild after the 
recent changes. Doesn't seem to be audio/video related since it also happens 
with audio/video NULL output. Might be something triggered by wmv9dmod.dll.

I'm sure this has worked before. Also, it works on my 6.2 PC.

dmesg/kldstat can be found here:

[GDB will not be able to debug user-mode threads: /usr/lib/ 
Undefined symbol "ps_pglobal_lookup"]
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This GDB was configured as "i386-marcel-freebsd".

Unread portion of the kernel message buffer:
kernel trap 12 with interrupts disabled

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address	= 0x4
fault code		= supervisor read, page not present
instruction pointer	= 0x20:0xc0982844
stack pointer	        = 0x28:0xd4f78be4
frame pointer	        = 0x28:0xd4f78c18
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, def32 1, gran 1
processor eflags	= resume, IOPL = 0
current process		= 1032 (mplayer)
trap number		= 12
panic: page fault
cpuid = 0
Uptime: 3m4s
Physical memory: 466 MB
Dumping 63 MB: 48 32 16

#0  doadump () at pcpu.h:172
172	pcpu.h: No such file or directory.
	in pcpu.h
(kgdb) bt
#0  doadump () at pcpu.h:172
#1  0xc07378ce in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2  0xc0737bd3 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:563
#3  0xc09837f2 in trap_fatal (frame=0xd4f78ba4, eva=4)
    at /usr/src/sys/i386/i386/trap.c:876
#4  0xc098407c in trap (frame=0xd4f78ba4) at /usr/src/sys/i386/i386/trap.c:276
#5  0xc096a08b in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#6  0xc0982844 in i386_ldt_grow (td=0xc3006360, len=18)
    at /usr/src/sys/i386/i386/sys_machdep.c:704
#7  0xc0982bc4 in i386_set_ldt (td=0xc3006360, uap=0xd4f78c68, 
    descs=0xd5032000) at /usr/src/sys/i386/i386/sys_machdep.c:631
#8  0xc0983124 in sysarch (td=0xc3006360, uap=0xd4f78cfc)
    at /usr/src/sys/i386/i386/sys_machdep.c:134
#9  0xc0983cb8 in syscall (frame=0xd4f78d38)
    at /usr/src/sys/i386/i386/trap.c:1016
#10 0xc096a0f0 in Xint0x80_syscall ()
    at /usr/src/sys/i386/i386/exception.s:196
#11 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)

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