svn commit: r359823 - in head: etc/mtree include lib/libc/gen sys/conf sys/net sys/net/route sys/netinet sys/netinet6 sys/sys usr.bin/netstat

Hans Petter Selasky hps at selasky.org
Tue Apr 14 12:24:57 UTC 2020


Hi,

It looks like you need to add some NULL checks:

> diff --git a/sys/netinet/in_rmx.c b/sys/netinet/in_rmx.c
> index eeb7760c5cc..5f9ae967177 100644
> --- a/sys/netinet/in_rmx.c
> +++ b/sys/netinet/in_rmx.c
> @@ -103,7 +103,7 @@ rib4_preadd(u_int fibnum, const struct sockaddr *addr, const struct sockaddr *ma
>  
>         /* Ensure that default route nhop has special flag */
>         const struct sockaddr_in *mask4 = (const struct sockaddr_in *)mask;
> -       if ((rt_flags & RTF_HOST) == 0 && mask4->sin_addr.s_addr == 0)
> +       if ((rt_flags & RTF_HOST) == 0 && mask4 != NULL && mask4->sin_addr.s_addr == 0)
>                 nh->nh_flags |= NHF_DEFAULT;
>  
>         /* Set nhop type to basic per-AF nhop */
> diff --git a/sys/netinet6/in6_rmx.c b/sys/netinet6/in6_rmx.c
> index 7f10b290309..4621669dab9 100644
> --- a/sys/netinet6/in6_rmx.c
> +++ b/sys/netinet6/in6_rmx.c
> @@ -125,7 +125,7 @@ rib6_preadd(u_int fibnum, const struct sockaddr *addr, const struct sockaddr *ma
>  
>         /* Ensure that default route nhop has special flag */
>         const struct sockaddr_in6 *mask6 = (const struct sockaddr_in6 *)mask;
> -       if ((nhop_get_rtflags(nh) & RTF_HOST) == 0 &&
> +       if ((nhop_get_rtflags(nh) & RTF_HOST) == 0 && mask6 != NULL &&
>             IN6_IS_ADDR_UNSPECIFIED(&mask6->sin6_addr))
>                 nh->nh_flags |= NHF_DEFAULT;
>  

Else I hit a panic with this command:

sysctl net.inet.icmp.bmcastecho=1
route add -net 255.255.255.255 a.b.c.d

Where a.b.c.d is a valid IPv4 on the local network.

--HPS


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