linux-kernel - Re: [linus:master] [tcp_cubic] 25c1a9ca53: packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart

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Message-ID: <CAL+tcoBmRVKUfhR8DiMryD4h5ZJeQpGuhPyzK3fexiEBvE_KDA@mail.gmail.com>
Date: Mon, 27 Jan 2025 18:19:30 +0800
From: Jason Xing <kerneljasonxing@...il.com>
To: kernel test robot <oliver.sang@...el.com>
Cc: Mahdi Arghavani <ma.arghavani@...oo.com>, oe-lkp@...ts.linux.dev, lkp@...el.com, 
	linux-kernel@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, 
	Neal Cardwell <ncardwell@...gle.com>, Eric Dumazet <edumazet@...gle.com>, 
	Haibo Zhang <haibo.zhang@...go.ac.nz>, David Eyers <david.eyers@...go.ac.nz>, 
	Abbas Arghavani <abbas.arghavani@....se>, netdev@...r.kernel.org
Subject: Re: [linus:master] [tcp_cubic] 25c1a9ca53: packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart_ipv4-mapped-v6.fail

On Sun, Jan 26, 2025 at 4:49 PM Jason Xing <kerneljasonxing@...il.com> wrote:
>
> On Sun, Jan 26, 2025 at 2:30 PM kernel test robot <oliver.sang@...el.com> wrote:
> >
> >
> >
> > Hello,
> >
> > kernel test robot noticed "packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart_ipv4-mapped-v6.fail" on:
> >
> > (
> > in fact, there are other failed cases which can pass on parent:
> >
> > 4395a44acb15850e 25c1a9ca53db5780757e7f53e68
> > ---------------- ---------------------------
> >        fail:runs  %reproduction    fail:runs
> >            |             |             |
> >            :6          100%           6:6     packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart_ipv4-mapped-v6.fail
> >            :6          100%           6:6     packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart_ipv4.fail
> >            :6          100%           6:6     packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart_ipv6.fail
> >            :6          100%           6:6     packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k_ipv4-mapped-v6.fail
> >            :6          100%           6:6     packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k_ipv4.fail
> >            :6          100%           6:6     packetdrill.packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k_ipv6.fail
>
> Thanks for the report. I remembered that Mahdi once modified/adjusted
> some of them, please see the link[1].
>
> [1]: https://lore.kernel.org/all/223960459.607292.1737102176209@mail.yahoo.com/
>
> I think we're supposed to update them altogether?

Should the updated pkt scripts target net or net-next tree, BTW?

Thanks,
Jason

>
> Thanks,
> Jason
>
> > )
> >
> > commit: 25c1a9ca53db5780757e7f53e688b8f916821baa ("tcp_cubic: fix incorrect HyStart round start detection")
> > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> >
> > [test failed on linus/master      405057718a1f9074133979a9f2ff0c9fa4a19948]
> > [test failed on linux-next/master 5ffa57f6eecefababb8cbe327222ef171943b183]
> >
> > in testcase: packetdrill
> > version: packetdrill-x86_64-8d63bbc-1_20250115
> > with following parameters:
> >
> >
> > config: x86_64-rhel-9.4-func
> > compiler: gcc-12
> > test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz (Haswell) with 8G memory
> >
> > (please refer to attached dmesg/kmsg for entire log/backtrace)
> >
> >
> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > | Reported-by: kernel test robot <oliver.sang@...el.com>
> > | Closes: https://lore.kernel.org/oe-lkp/202501261315.c6c7dbb4-lkp@intel.com
> >
> >
> >
> > FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart.pkt (ipv4-mapped-v6)]
> > stdout:
> > 20
> > 30
> > 36
> > stderr:
> > FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart.pkt (ipv6)]
> > stdout:
> > 20
> > 30
> > 36
> > stderr:
> >
> > ...
> >
> > FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k-idle-restart.pkt (ipv4)]
> > stdout:
> > 20
> > 30
> > 36
> > stderr:
> >
> > ...
> >
> > FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k.pkt (ipv4)]
> > stdout:
> > 20
> > 30
> > 36
> > stderr:
> >
> > ...
> >
> > FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k.pkt (ipv4-mapped-v6)]
> > stdout:
> > 20
> > 30
> > 36
> > stderr:
> >
> > ...
> >
> > FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/cubic/cubic-bulk-166k.pkt (ipv6)]
> > stdout:
> > 20
> > 30
> > 36
> > stderr:
> >
> >
> >
> > The kernel config and materials to reproduce are available at:
> > https://download.01.org/0day-ci/archive/20250126/202501261315.c6c7dbb4-lkp@intel.com
> >
> >
> >
> > --
> > 0-DAY CI Kernel Test Service
> > https://github.com/intel/lkp-tests/wiki
> >