kern/53350: fill up a malloc md-disk on 5.1-R causes panic
phk at phk.freebsd.dk
Sun Jun 15 09:30:16 PDT 2003
The following reply was made to PR kern/53350; it has been noted by GNATS.
From: "Poul-Henning Kamp" <phk at phk.freebsd.dk>
To: Jay Kuri <jay at oneway.com>
Cc: FreeBSD-gnats-submit at freebsd.org
Subject: Re: kern/53350: fill up a malloc md-disk on 5.1-R causes panic
Date: Sun, 15 Jun 2003 18:24:17 +0200
> If you have a 5.1-R system with, say, 256M of ram
>and you mdconfig one or several malloc md-devices totalling around 100M,
>if you attempt to use them to capacity, the machine will panic. The
>message given is:
> panic: kmem_malloc(4096): kmem_map too small: 108347392 total allocated
It's really very simple: You ran out of kernel mapped memory ("KVM").
Remedy: Don't Do That.
See also: malloc(9), md(4)
This PR can be closed.
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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