kern/67919: imagemagicks convert image to movie conversion kills 5.2.1 machine in vnode_pager_putpages

[Edwin Groothuis]

>Number:         67919
>Category:       kern
>Synopsis:       imagemagicks convert image to movie conversion kills 5.2.1 machine in vnode_pager_putpages
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Jun 14 05:20:01 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Edwin Groothuis
>Release:        FreeBSD 5.2.1-RELEASE i386
>Organization:
-
>Environment:
    System: FreeBSD k7.mavetju 5.2.1-RELEASE FreeBSD 5.2.1-RELEASE #3: Fri Feb 27 13:54:29 EST 2004 edwin at k7.mavetju:/usr/src/sys/i386/compile/k7 i386

    768Mb of memory, 1.5Gb of swap

>Description:

    I have about 5000 PNG images I try to convert into an MPG movie.
    ImageMagicks convert can do this. I can convert 100 images, 200
    images but somewhere between 201 and 300 images it totally
    crashes my FreeBSD box with an endless stream of messages:
	"vnode_pager_putpages: I/O error ..."
	"vnode_pager_putpages: residual I/O ..."

>How-To-Repeat:

    Install graphics/ImageMagick.
    Create about 300 PNG files (mine are
    movie00001.png: PNG image data, 586 x 533, 2-bit colormap, non-interlaced)
    Run "convert -verbose movie*.png blaat.mpg"

    Somewhere between image 200 and 300 you get a message about
    /var being full and lots of the vnode_pager_putpages messages
    scrolling over the kernel.

>Fix:

    Euhm... I'm willing to try every patch being send to me.
>Release-Note:
>Audit-Trail:
>Unformatted: