Subject: kern/326: vm_fault during sync at shutdown
To: None <gnats-admin>
From: None <>
List: netbsd-bugs
Date: 07/06/1994 14:20:05
>Number:         326
>Category:       kern
>Synopsis:       vm_fault during sync at shutdown
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    gnats-admin (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul  6 14:20:03 1994
>Originator:     Thomas Eberhardt
CeVis, University of Bremen, Germany
System: NetBSD ed209 0.9C NetBSD 0.9C (ED209) #0: Tue Jul 02 xx:xx:xx MET DST 1994 thomas@ed209:/usr/src/sys/arch/i386/compile/ED209 i386

Machine: i386
	I just had my second kernel crash shortly after running
	"shutdown -r now".  Following is the output from the kernel
	debugger and a backtrace that i've written down and typed in:

	vm_fault(f86ad900, 0, 1, 0) -> 1
	kernel: page fault trap, code = 0
	stopped at _ffs_sync+0x17: movl 0xc(%edi),%eax

	_ffs_sync(f8665000, 2, f8668d80, f86ada00) at _ffs_sync+0x17
	_sync(f86ada00, f7bfff94, f7bfff8c, 0, f7bfdf80) at _sync+0x48
	_syscall() at _syscall+0x174
	--- syscall (number 36) ---

	The one and only ffs filesystem that was mounted is my combined
	root&usr filesystem (4.4BSD ffs).