mbuf cluster shortage caused kernel panic

[Mike Silbersack]

On Wed, 23 Jul 2003, Leo Bicknell wrote:

> I had a crash a few days ago on a 4.8-RELEASE box that I hadn't
> looked into yet, but when I saw your message I went back to take a
> look.
>
> I also ran out of mbuf clusters.  First time on this machine, and
> since I've used it to test a number of high bandwidth*delay paths
> I've at times had the socket buffers cranked and really exercised
> MBUF's but good.  At the time of the panic the limits were sane
> (32k send/receive tcp).
>
> #2  0xc0163e24 in poweroff_wait ()
> #3  0xc0184ad5 in sbappendaddr ()
> #4  0xc01c85a1 in udp_input ()
> #5  0xc01bbb18 in ip_input ()
> #6  0xc01bbb77 in ipintr ()
> #7  0xc0292631 in swi_net_next ()
> #8  0xc0185d83 in sendit ()
> #9  0xc0185e86 in sendto ()
> #10 0xc02a0e51 in syscall2 ()

>       Leo Bicknell - bicknell at ufp.org - CCIE 3440

I think that this may have been caused by the bug I fixed in if_loop.c
revision 1.47.2.8 (post 4.8-release.)

Mike "Silby" Silbersack