Panic : bad pte

[David Demelier]

Hello,

There it is, all my computers on FreeBSD 9.1-RELEASE had panic. I can
just say there is a problem in the 9.1-RELEASE because I had no panic
before. What afraid me is that my production server also panic'ed a
few days ago, fortunately it does not appears so often.

This is a panic that happened on my desktop computer, with a graphic
card. The crash usually appears when X starts.

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Unread portion of the kernel message buffer:
panic: bad pte
cpuid = 3
KDB: stack backtrace:
Uptime: 2m31s
Dumping 183 out of 1950 MB:..9%..18%..27%..35%..44%..53%..62%..79%..88%..96%

Reading symbols from /boot/modules/nvidia.ko...done.
Loaded symbols for /boot/modules/nvidia.ko
#0  doadump (textdump=Variable "textdump" is not available.
) at pcpu.h:224
224     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) bt
#0  doadump (textdump=Variable "textdump" is not available.
) at pcpu.h:224
#1  0x0000000000000004 in ?? ()
#2  0xffffffff8048c156 in kern_reboot (howto=260) at
/usr/src/sys/kern/kern_shutdown.c:448
#3  0xffffffff8048c619 in panic (fmt=0x1 <Address 0x1 out of bounds>)
at /usr/src/sys/kern/kern_shutdown.c:636
#4  0xffffffff8065f88a in pmap_remove_pages (pmap=0xfffffe0005a2fa60)
at /usr/src/sys/amd64/amd64/pmap.c:4156
#5  0xffffffff8063d26b in vmspace_exit (td=0xfffffe0005a05470) at
/usr/src/sys/vm/vm_map.c:422
#6  0xffffffff8045d725 in exit1 (td=0xfffffe0005a05470, rv=Variable
"rv" is not available.
) at /usr/src/sys/kern/kern_exit.c:315
#7  0xffffffff8045e5ce in sys_sys_exit (td=Variable "td" is not available.
) at /usr/src/sys/kern/kern_exit.c:122
#8  0xffffffff8066737f in amd64_syscall (td=0xfffffe0005a05470,
traced=0) at subr_syscall.c:135
#9  0xffffffff80652d97 in Xfast_syscall () at
/usr/src/sys/amd64/amd64/exception.S:387
#10 0x0000000800d51c1c in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb)

Of course I may do something wrong, and I hope so but unfortunately I
can't find any solution. May the nvidia driver be the problem?

Kind regards

--
Demelier David