On Fri, Oct 06, 2006 at 05:40:01PM +0000, bouyer@lip6.fr wrote:
> >Description:
> 	This box is a ftp/http server, with quite a lot of traffic serving
> 	static files. ftp is the ftpd from base distrib started from inetd,
> 	httpd is apache 2.0 from pkgsrc-2006Q2. Both a configured to use
> 	mmap.
> 
> 	It has been running for about a month without problems.
> 	Today the box paniced with:
> panic: kernel diagnostic assertion "startoff < endoff || endoff == 0" failed: file "/Volumes/data/bouyer/netbsd-3/src/sys/miscfs/genfs/genfs_vnops.c", line 1123
> 
> 	cpu_Debugger() at netbsd:cpu_Debugger+0x5
> 	panic() at netbsd:panic+0x1c8
> 	__assert() at netbsd:__assert+0x21
> 	genfs_putpages() at netbsd:genfs_putpages+0x6e9
> 	uvn_put() at netbsd:uvn_put+0x31
> 	uvm_map_clean() at netbsd:uvm_map_clean+0x246
> 	sys_madvise() at netbsd:sys_madvise+0x75
> 	syscall_plain() at netbsd:syscall_plain+0xe4
> 
> 	The box was not specially loaded when this happened (it had much
> 	highter load in the past days); but I changed vm.filemax to 75
> 	(from default) 3 days ago; and this caused the box to start swapping
> 	a little (before this the swap space was completely unused).
> 	Maybe it's related.

Thinking about it, it's also possible that a file got truncated or deleted
while it was mmap'ed. Could this trigger this diagnostic ?

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--