panic in pmap_remove_pages()

Just got this panic.  If anyone is interested I have the
kenrel and core, so can do some additional poking around.

troutmask.apl.washington.edu dumped core - see /var/crash/vmcore.0

Wed Jan 21 13:28:04 PST 2015

FreeBSD troutmask.apl.washington.edu 11.0-CURRENT FreeBSD 11.0-CURRENT #7 r276378M: Mon Dec 29 14:13:57 PST 2014     kargl_at_troutmask.apl.washington.edu:/data/obj/usr/src/sys/SPEW  amd64

panic: general protection fault

Unread portion of the kernel message buffer:

Fatal trap 9: general protection fault while in kernel mode
cpuid = 3; apic id = 13
instruction pointer	= 0x20:0xffffffff8079abf9
stack pointer	        = 0x28:0xfffffe047325e360
frame pointer	        = 0x28:0xfffffe047325e440
code segment		= base 0x0, limit 0xfffff, type 0x1b
			= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags	= interrupt enabled, resume, IOPL = 0
current process		= 41779 (z)
trap number		= 9
panic: general protection fault
cpuid = 3
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe047325e020
panic() at panic+0x1c1/frame 0xfffffe047325e0e0
trap_fatal() at trap_fatal+0x396/frame 0xfffffe047325e140
trap() at trap+0x6ce/frame 0xfffffe047325e2a0
calltrap() at calltrap+0x8/frame 0xfffffe047325e2a0
--- trap 0x9, rip = 0xffffffff8079abf9, rsp = 0xfffffe047325e360, rbp = 0xfffffe047325e440 ---
pmap_remove_pages() at pmap_remove_pages+0x539/frame 0xfffffe047325e440
exec_new_vmspace() at exec_new_vmspace+0x180/frame 0xfffffe047325e4a0
exec_elf64_imgact() at exec_elf64_imgact+0x6c0/frame 0xfffffe047325e570
kern_execve() at kern_execve+0x484/frame 0xfffffe047325e8c0
sys_execve() at sys_execve+0x35/frame 0xfffffe047325e920
amd64_syscall() at amd64_syscall+0x289/frame 0xfffffe047325ea30
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe047325ea30
--- syscall (59, FreeBSD ELF64, sys_execve), rip = 0x4251ba, rsp = 0x7ffffe8ebab8, rbp = 0x7ffffe8ec1c0 ---
Uptime: 22d22h22m46s

#0  doadump (textdump=1) at pcpu.h:219
219	pcpu.h: No such file or directory.
	in pcpu.h
(kgdb) #0  doadump (textdump=1) at pcpu.h:219
#1  0xffffffff80555bd7 in kern_reboot (howto=260)
    at /usr/src/sys/kern/kern_shutdown.c:447
#2  0xffffffff80556040 in panic (fmt=<value optimized out>)
    at /usr/src/sys/kern/kern_shutdown.c:746
#3  0xffffffff807a2986 in trap_fatal (frame=<value optimized out>, 
    eva=<value optimized out>) at /usr/src/sys/amd64/amd64/trap.c:867
#4  0xffffffff807a25de in trap (frame=<value optimized out>)
    at /usr/src/sys/amd64/amd64/trap.c:201
#5  0xffffffff80787ca3 in calltrap ()
    at /usr/src/sys/amd64/amd64/exception.S:235
#6  0xffffffff8079abf9 in pmap_remove_pages (pmap=0xfffff801c627dec8)
    at /usr/src/sys/amd64/amd64/pmap.c:5389
#7  0xffffffff8051fa00 in exec_new_vmspace (imgp=0xfffffe047325e6e0, 
    sv=0xffffffff80b3e8e8) at /usr/src/sys/kern/kern_exec.c:1036
#8  0xffffffff804fed20 in exec_elf64_imgact (imgp=0xfffffe047325e6e0)
    at /usr/src/sys/kern/imgact_elf.c:830
#9  0xffffffff8051e4f4 in kern_execve (td=0xfffff8027588f490, 
    args=0xfffffe047325e8d8, mac_p=0x1da) at /usr/src/sys/kern/kern_exec.c:486
#10 0xffffffff8051de15 in sys_execve (td=<value optimized out>, 
    uap=<value optimized out>) at /usr/src/sys/kern/kern_exec.c:210
#11 0xffffffff807a3199 in amd64_syscall (td=0xfffff8027588f490, traced=0)
    at subr_syscall.c:133
#12 0xffffffff80787f8b in Xfast_syscall ()
    at /usr/src/sys/amd64/amd64/exception.S:395
#13 0x00000000004251ba in ?? ()

-- 
Steve