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

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Message-ID: <CAL+tcoBBjLsmWUt9PkzDhVtGLm-s53EyTzcHhpTkVnLpgz0FXw@mail.gmail.com>
Date: Sun, 26 Jan 2025 16:49:16 +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 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?

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
>