> #0  boot (howto=256) at ../../kern/kern_shutdown.c:273
> 273                     dumppcb.pcb_cr3 = rcr3();
> (kgdb) bt
> #0  boot (howto=256) at ../../kern/kern_shutdown.c:273
> #1  0xc0132295 in panic (fmt=0xc0244fcf "page fault") at 
>../../kern/kern_shutdown.c:523
> #2  0xc02158e2 in trap_fatal (frame=0xcf71ad9c, eva=0) at ../../i386/i386/trap.c:908
> #3  0xc0215595 in trap_pfault (frame=0xcf71ad9c, usermode=0, eva=0) at 
>../../i386/i386/trap.c:801
> #4  0xc0215167 in trap (frame={tf_fs = 16, tf_es = 16, tf_ds = 16777232, tf_edi = 0, 
>tf_esi = -1071179392, tf_ebp = -814633492, 
>       tf_isp = -814633528, tf_ebx = -1071179392, tf_edx = 0, tf_ecx = 11, tf_eax = 
>0, tf_trapno = 12, tf_err = 2, 
>       tf_eip = -1071807687, tf_cs = 8, tf_eflags = 66118, tf_esp = -1071172824, 
>tf_ss = -814624768})
>     at ../../i386/i386/trap.c:425
> #5  0xc01d8339 in _vm_map_clip_end (map=0xc0273328, entry=0xc0271980, 
>end=3480358912) at ../../vm/vm_map.c:835
> #6  0xc01d93bf in vm_map_delete (map=0xc0273328, start=3480342528, end=3480358912) 
>at ../../vm/vm_map.c:1751
> #7  0xc01d9536 in vm_map_remove (map=0xc0273328, start=3480342528, end=3480358912) 
>at ../../vm/vm_map.c:1822
> #8  0xc01d747d in kmem_free (map=0xc0273328, addr=3480342528, size=16384) at 
>../../vm/vm_kern.c:233
> #9  0xc0141731 in pipeclose (cpipe=0xccd40a20) at ../../kern/sys_pipe.c:1093
> #10 0xc014161d in pipe_close (fp=0xc3154540, p=0xcf67a300) at 
>../../kern/sys_pipe.c:1049

PR 15235 has some fixes for pipe bugs.

Bruce



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