diff options
| author | julian <julian@FreeBSD.org> | 1997-07-15 23:25:32 +0000 |
|---|---|---|
| committer | julian <julian@FreeBSD.org> | 1997-07-15 23:25:32 +0000 |
| commit | db918dfad5688e9a2980e5a898e349c871ff9524 (patch) | |
| tree | 70f80cb03d825482e92a9dd7b255da9a872cb055 /sys/net/if_ethersubr.c | |
| parent | 245797ff55f2b110add3004d133b9cb7535cb219 (diff) | |
| download | FreeBSD-src-db918dfad5688e9a2980e5a898e349c871ff9524.zip FreeBSD-src-db918dfad5688e9a2980e5a898e349c871ff9524.tar.gz | |
Finally track down the reason for some of my occasional kernel crashes.
Route(1) has a bug that sends a bad message to the kernel. The kernel
trusts it and crashes. Add some sanity checks so that
we don't trust the user quite as much any more.
(also add a comment in if_ethersubr.c)
Diffstat (limited to 'sys/net/if_ethersubr.c')
| -rw-r--r-- | sys/net/if_ethersubr.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c index 48295ae..13be403 100644 --- a/sys/net/if_ethersubr.c +++ b/sys/net/if_ethersubr.c @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93 - * $Id: if_ethersubr.c,v 1.34 1997/03/24 11:33:11 bde Exp $ + * $Id: if_ethersubr.c,v 1.35 1997/05/10 10:01:31 jhay Exp $ */ #include <sys/param.h> @@ -792,6 +792,9 @@ ether_resolvemulti(ifp, llsa, sa) switch(sa->sa_family) { case AF_LINK: + /* + * No mapping needed. Just check that it's a valid MC address. + */ sdl = (struct sockaddr_dl *)sa; e_addr = LLADDR(sdl); if ((e_addr[0] & 1) != 1) |
