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Date: Sun, 1 Jun 2003 11:26:12 +0200 (CEST)
From: Martin Blapp <mb@imp.ch>
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Subject: vm-related panic with 5.1RC1
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Hi all,

I just got this panic during compile of openoffice

Fatal trap 12 while in kernel mode
fault virtual address = 0x68
fault code            = supervisor read, page not present
instruction pointer   = 0x8:0xc0271f4d
stack pointer         = 0x10:0xe6e51ab0
frame pointer         = 0x10:0xe6e51ae0
code segement         = base 0x0, limit 0xfffff, type 0x1b
                      = DPL 0, pres 1, def32, gran 1
processor flags       = interrupt enabled, resume, IOPL =1
current process       = 22362
kernel: type 12 trap, code=0
Stopped at _mtx_lock_sleep+0x16d: movl 0x68(%ecx),%edx
db> trace
_mtx_lock_sleep(c082f0b0,0,0,0,c0678415) at _mtx_lock_sleep+0x16d
vm_map_delete(c082f000, d0d0d000, d0d11000, e6effda0, c78d5720) at vm_map_delete+0x383)
vm_map_remove(c082f000, d0d0d000, d0d11000, e6e51b9c, c03b247f) at vm_map_remove+0x58)
kmem_free(c082f000, d0d0d000, 3000, 0, 80) at kmem_free+0x32
cpu_thread_clean(c78d54c0, e6e51bb4,c78d54c0, c78d54c0, e6e51be4) at
cpu_thread_clean+0x7f
thread_free(c78d54c0, e6e51bd0, c0275839, c67a3000, c6abf030) at thread_free+0x14
thread_reap(c78d55f0) at thread_reap+0x16c
thread_wait(c656b000, ffffffff, 0, c03feb34,0) at thread_wait+0x55
wait1(c6569980, e6e51d10,  0, e6e51d40, c03b0dfa) at wait1+0x738
wait5(c6569980, e6e51d10, 10, c6569980, 4) at wait4+0x20
syscall(2f, 2f, 2f, bfbff074, 325) at syscall+0x2aa
Xint0x80_syscall() at Xint0x80_syscall()+0x1d
--- syscall (7, FreeBSD ELF32, wait4) eip = 0x807b28b, esp = 0xbfbfefbc,
ebp = 0xbfbfefd8)

Unfortunatly my partition was too small, so I could not get a dump. I've
adjusted this now and the next time it panics I'll have one ready.

Martin