Re: cvs commit: src/sys/netinet if_ether.c

From: Bruce M Simpson (bms_at_spc.org)
Date: 10/26/04

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    Date: Mon, 25 Oct 2004 20:41:26 -0700
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org

    On Tue, Oct 26, 2004 at 03:31:59AM +0000, Bruce M Simpson wrote:
    > Log:
    > Check that rt_mask(rt) is non-NULL before dereferencing it, in the
    > RTM_ADD case, thus avoiding a panic.

    PR: kern/42030

    It isn't immediately clear to me if this is a routing socket API issue
    or a client issue.

    The panic, at least, is worked around, but the root problem needs to be
    fixed -- it is most likely a synchronization problem in zebra whereby it
    is attempting to add a route to the kernel FIB which references an
    interface which does not yet exist or has gone away.

    At least one person who has reported this was running vtund, which plumbs
    its own tun instances on demand; the other I think was running userland ppp.

    I haven't seen anything similar with XORP yet.

    BMS
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  • Next message: SUZUKI Shinsuke: "Re: SCTP in KAME / Re: Removing T/TCP and replacing it withsomething simpler"