Re: panic: tcp_do_segment: sent too much

> On 23. Oct 2024, at 07:51, Peter Holm <pho@freebsd.org> wrote:
> 
> + export 'tcpINCARNATIONS=16678'
> + [ 16678 -le 0 ]
> + export 'TESTPROGS= ./testcases/tcp/tcp'
> + sleep 900
> + su test -c '(cd ..; ./testcases/run/run $TESTPROGS)'
>     run: run time  0+00:15:00, incarnations   1, load 100, verbose 1
> 23:59:21 Loop #1
>     tcp: run time  0+00:02:00, incarnations 3202, load 100, verbose 1
> witness_lock_list_get: witness exhausted
> panic: tcp_do_segment: sent too much
> cpuid = 6
> time = 1729634436
> KDB: stack backtrace:
> db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01081bd9b0
> vpanic() at vpanic+0x13f/frame 0xfffffe01081bdae0
> panic() at panic+0x43/frame 0xfffffe01081bdb40
> tcp_do_segment() at tcp_do_segment+0x29a2/frame 0xfffffe01081bdc20
> tcp_input_with_port() at tcp_input_with_port+0x10e5/frame 0xfffffe01081bdd70
> tcp_input() at tcp_input+0xb/frame 0xfffffe01081bdd80
> ip_input() at ip_input+0x28f/frame 0xfffffe01081bdde0
> swi_net() at swi_net+0x19b/frame 0xfffffe01081bde60
> ithread_loop() at ithread_loop+0x266/frame 0xfffffe01081bdef0
> fork_exit() at fork_exit+0x82/frame 0xfffffe01081bdf30
> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe01081bdf30
> --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
> 
> Details @ https://people.freebsd.org/~pho/stress/log/log0557.txt
Hi Peter,

thank you very much for the report!
Is this reproducible? I'm CC-ing Warner, since he has also reported this to
me privately, but wasn't able to reproduce it.

Best regards
Michael
> 
> - Peter
>