On Sun, 23 Oct 2011, Lawrence Stewart wrote: > On 10/22/11 19:49, Pawel Jakub Dawidek wrote: >> The panic message says: >> >> panic: tcp_input negative window: tp 0xfffffe007763e000 rcv_nxt >> 3718269252 rcv_adv 3718268291 >> >> I only have picture of the backtrace: >> >> http://people.freebsd.org/~pjd/misc/panic_negative_window.jpg >> > > ewww that is not good. Can you give us any more information about the machine > and what it's doing? Is it terminating TCP connections from the internet at > large or only local LAN (i.e. is there likely to be packet loss happening)? > Are you doing TSO or LRO? Do you have any non-default tuning in place? I can't speak for pjd_at_, but when this issue occured a couple months ago for me, the system I had run into the issue with was doing packet forwarding via ipfw from an internal NAT via ipfw to a corporate network. The system was using bce(4) on the internal and external interface. Thanks, -GarrettReceived on Sun Oct 23 2011 - 03:10:57 UTC
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