From owner-freebsd-transport@freebsd.org Sun Apr 18 09:04:23 2021 Return-Path: Delivered-To: freebsd-transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 06F665E233A for ; Sun, 18 Apr 2021 09:04:23 +0000 (UTC) (envelope-from pho@holm.cc) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 4FNPCB55mxz3CfJ for ; Sun, 18 Apr 2021 09:04:22 +0000 (UTC) (envelope-from pho@holm.cc) Received: by mailman.nyi.freebsd.org (Postfix) id AEF935E2499; Sun, 18 Apr 2021 09:04:22 +0000 (UTC) Delivered-To: transport@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id AE9BD5E21D4; Sun, 18 Apr 2021 09:04:22 +0000 (UTC) (envelope-from pho@holm.cc) Received: from relay05.pair.com (relay05.pair.com [216.92.24.67]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4FNPCB4Pbfz3CcC; Sun, 18 Apr 2021 09:04:22 +0000 (UTC) (envelope-from pho@holm.cc) Received: from x8.osted.lan (unknown [80.208.71.94]) by relay05.pair.com (Postfix) with ESMTP id 3A7391A2803; Sun, 18 Apr 2021 05:04:21 -0400 (EDT) Received: from x8.osted.lan (localhost [127.0.0.1]) by x8.osted.lan (8.15.2/8.15.2) with ESMTPS id 13I94KIM051067 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sun, 18 Apr 2021 11:04:20 +0200 (CEST) (envelope-from pho@x8.osted.lan) Received: (from pho@localhost) by x8.osted.lan (8.15.2/8.15.2/Submit) id 13I94J5r051066; Sun, 18 Apr 2021 11:04:19 +0200 (CEST) (envelope-from pho) Date: Sun, 18 Apr 2021 11:04:19 +0200 From: Peter Holm To: "Scheffenegger, Richard" Cc: Richard Scheffenegger , "src-committers@freebsd.org" , "dev-commits-src-all@freebsd.org" , "dev-commits-src-main@freebsd.org" , "transport@freebsd.org" Subject: Re: git: d1de2b05a001 - main - tcp: Rename rfc6675_pipe to sack.revised, and enable by default Message-ID: <20210418090419.GA51040@x8.osted.lan> References: <202104171350.13HDoPQL025776@gitrepo.freebsd.org> <20210418060040.GA48834@x8.osted.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Rspamd-Queue-Id: 4FNPCB4Pbfz3CcC X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[] X-Mailman-Approved-At: Sun, 18 Apr 2021 09:10:09 +0000 X-BeenThere: freebsd-transport@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Discussions of transport level network protocols in FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Apr 2021 09:04:23 -0000 On Sun, Apr 18, 2021 at 08:30:20AM +0000, Scheffenegger, Richard wrote: > Hi Peter, > > Hmm... the panic appears to be due to a stale entry in the sack scoreboard - a hole not having been closed up to snd_una... > > Unlikely that this was solely due to this change by itself. > > Can I get the vmcore and kernel.debug for a close investigation? > Sure. Uploaded to: https://people.freebsd.org/~pho/kernel.vmcore.320-mercat1.tar - Peter > > Richard Scheffenegger > > -----Ursprüngliche Nachricht----- > Von: Peter Holm > Gesendet: Sonntag, 18. April 2021 08:01 > An: Richard Scheffenegger > Cc: src-committers@freebsd.org; dev-commits-src-all@freebsd.org; dev-commits-src-main@freebsd.org > Betreff: Re: git: d1de2b05a001 - main - tcp: Rename rfc6675_pipe to sack.revised, and enable by default > > NetApp Security WARNING: This is an external email. Do not click links or open attachments unless you recognize the sender and know the content is safe. > > > > > 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=d1de2b05a001d3d80f633f576f4909 > > c2686dda3d > > > > commit d1de2b05a001d3d80f633f576f4909c2686dda3d > > Author: Richard Scheffenegger > > AuthorDate: 2021-04-17 12:59:30 +0000 > > Commit: Richard Scheffenegger > > 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