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From: Randy Bush <randy@psg.com>
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Date: Sun, 28 Nov 2004 13:27:55 -0800
To: FreeBSD Current <freebsd-current@freebsd.org>
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Subject: Re: strangeness on new cvsup
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then, after install, this same one again as last week

kernel trap 12 with interrupts disabled


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x104
fault code              = supervisor read, page not present
instruction pointer     = 0x8:0xc04b408c
stack pointer           = 0x10:0xe6e2795c
frame pointer           = 0x10:0xe6e27970
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = resume, IOPL = 0
current process         = 485 (asterisk)
[thread pid 485 tid 100178 ]
Stopped at      _mtx_lock_sleep+0x9c:   cmpl    $0x4,0x104(%ebx)
db> trace 
Tracing pid 485 tid 100178 td 0xc2492c00
_mtx_lock_sleep(c21a206c,c2492c00,0,c2592edb,6ac) at _mtx_lock_sleep+0x9c
_mtx_lock_flags(c21a206c,0,c2592edb,6ac,2) at _mtx_lock_flags+0x45
zt_clone(0,c23c1900,3,c2cdd100,c2492c00) at zt_clone+0x71
zt_timing_open(c23c1900,3,c2492c00,6,c2d17564) at zt_timing_open+0xbd
ztopen(c23c1900,3,2000,c2492c00,e6e27a48) at ztopen+0x6c
devfs_open(e6e27a6c,e6e27a64,c05f6199,180,c2492c00) at devfs_open+0x1d1
vn_open_cred(e6e27bd8,e6e27cd8,0,c1e91780,12) at vn_open_cred+0x3f1
vn_open(e6e27bd8,e6e27cd8,0,12,0) at vn_open+0x33
kern_open(c2492c00,284488b6,0,3,0) at kern_open+0x113
open(c2492c00,e6e27d14,c,c2492c00,6) at open+0x30
syscall(80d002f,80d002f,bf6e002f,80db000,0) at syscall+0x330
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (5, FreeBSD ELF32, open), eip = 0x2830b10f, esp = 0xbfbfe9ec, ebp = 0xbfbfea08 ---