Subject: kern/11779: [rkb] Kernel panic at shutdown after building floppy images
To: None <gnats-bugs@gnats.netbsd.org>
From: None <rafal@mediaone.net>
List: netbsd-bugs
Date: 12/19/2000 13:15:12
>Number:         11779
>Category:       kern
>Synopsis:       Kernel paniced at shutdown after building floppy images
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 19 13:15:00 PST 2000
>Closed-Date:
>Last-Modified:
>Originator:     
>Release:        
>Organization:
Highly unlikely
>Environment:
	System: NetBSD 1.5N (CYCLOPS.4MB) #5: Wed Dec 13 20:31:20 EST 2000
Architecture: i386
Machine: i386
>Description:
	Kernel panic'ed while shutting down after building a bunch of 1.5
	floppy images.  Console output before panic was a bunch of 'vnd0:
	no disk label', though I'm not sure if that's related or not.

	The backtrace is attached.  I don't have a netbsd.gdb for the sources
	in question, but do have the kernel image and the core file.

panic: vgonel: not clean, vp %p

[...]
(gdb) where
[...trace of DDB and other unimportant stuff...]
#9  0xc014b3e4 in panic ()
#10 0xc0163ff3 in vgonel ()
#11 0xc0163c97 in vflush ()
#12 0xc0208bec in ffs_flushfiles ()
#13 0xc0208aa6 in ffs_unmount ()
#14 0xc0165af1 in dounmount ()
#15 0xc0164bef in vfs_unmountall ()
#16 0xc0164e1b in vfs_shutdown ()
#17 0xc022f613 in cpu_reboot ()
#18 0xc0147d57 in sys_reboot ()
#19 0xc0236ce9 in syscall_plain ()
#20 0xc0100c78 in syscall1 ()
can not access 0xbfbfdd28, invalid translation (invalid PDE)
can not access 0xbfbfdd28, invalid translation (invalid PDE)
Cannot access memory at address 0xbfbfdd28.
(gdb) q
>How-To-Repeat:
	Haven't tried.  Build 1.5 snapshot with 1.5N and then shut the machine
	down?

>Fix:
	Unknown.
>Release-Note:
>Audit-Trail:
>Unformatted: