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Date:      Sun, 18 Apr 2021 08:00:40 +0200
From:      Peter Holm <pho@freebsd.org>
To:        Richard Scheffenegger <rscheff@freebsd.org>
Cc:        src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org
Subject:   Re: git: d1de2b05a001 - main - tcp: Rename rfc6675_pipe to sack.revised, and enable by default
Message-ID:  <20210418060040.GA48834@x8.osted.lan>
In-Reply-To: <202104171350.13HDoPQL025776@gitrepo.freebsd.org>
References:  <202104171350.13HDoPQL025776@gitrepo.freebsd.org>

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On Sat, Apr 17, 2021 at 01:50:25PM +0000, Richard Scheffenegger wrote:
> The branch main has been updated by rscheff:
> 
> URL: https://cgit.FreeBSD.org/src/commit/?id=d1de2b05a001d3d80f633f576f4909c2686dda3d
> 
> commit d1de2b05a001d3d80f633f576f4909c2686dda3d
> Author:     Richard Scheffenegger <rscheff@FreeBSD.org>
> AuthorDate: 2021-04-17 12:59:30 +0000
> Commit:     Richard Scheffenegger <rscheff@FreeBSD.org>
> CommitDate: 2021-04-17 12:59:45 +0000
> 
>     tcp: Rename rfc6675_pipe to sack.revised, and enable by default
>     
>     As full support of RFC6675 is in place, deprecating
>     net.inet.tcp.rfc6675_pipe and enabling by default
>     net.inet.tcp.sack.revised.
>     
>     Reviewed By: #transport, kbowling, rrs
>     Sponsored by: NetApp, Inc.
>     Differential Revision: https://reviews.freebsd.org/D28702
> ---
>  share/man/man4/tcp.4        | 25 ++++++++++++++-----------
>  sys/netinet/cc/cc_cubic.c   |  2 +-
>  sys/netinet/cc/cc_htcp.c    |  2 +-
>  sys/netinet/cc/cc_newreno.c |  2 +-
>  sys/netinet/tcp_input.c     | 11 +++--------
>  sys/netinet/tcp_sack.c      | 12 +++++++++---
>  sys/netinet/tcp_var.h       |  4 ++--
>  7 files changed, 31 insertions(+), 27 deletions(-)
> 
> diff --git a/share/man/man4/tcp.4 b/share/man/man4/tcp.4
> index d01505e58427..cbb8021226fe 100644
> --- a/share/man/man4/tcp.4

Could this panic be related?

20210418 07:19:59 all (204/751): jumbo.sh
panic: tcp_output: sack block to the left of una : -293976
cpuid = 3
time = 1618723234
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00e49b0550
vpanic() at vpanic+0x181/frame 0xfffffe00e49b05a0
panic() at panic+0x43/frame 0xfffffe00e49b0600
tcp_output() at tcp_output+0x27dc/frame 0xfffffe00e49b07c0
tcp_do_segment() at tcp_do_segment+0x32a3/frame 0xfffffe00e49b08b0
tcp_input() at tcp_input+0xbd5/frame 0xfffffe00e49b0a10
ip_input() at ip_input+0x194/frame 0xfffffe00e49b0aa0
swi_net() at swi_net+0x1a1/frame 0xfffffe00e49b0b20
ithread_loop() at ithread_loop+0x279/frame 0xfffffe00e49b0bb0
fork_exit() at fork_exit+0x80/frame 0xfffffe00e49b0bf0
fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe00e49b0bf0
--- trap 0, rip = 0, rsp = 0, rbp = 0 ---

https://people.freebsd.org/~pho/stress/log/log0094.txt

- Peter



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