linux-kernel - [linus:master] [ipv6] dfd2ee086a: packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-after-idle

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Message-ID: <202406280948.73d69176-oliver.sang@intel.com>
Date: Fri, 28 Jun 2024 10:05:07 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Eric Dumazet <edumazet@...gle.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
	Jakub Kicinski <kuba@...nel.org>, David Ahern <dsahern@...nel.org>,
	<netdev@...r.kernel.org>, <oliver.sang@...el.com>
Subject: [linus:master] [ipv6]  dfd2ee086a:
 packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-after-idle_ipv6.fail



Hello,

kernel test robot noticed "packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-after-idle_ipv6.fail" on:

commit: dfd2ee086a63c730022cb095576a8b3a5a752109 ("ipv6: make addrconf_wq single threaded")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

[test failed on linus/master      e5b3efbe1ab1793bb49ae07d56d0973267e65112]
[test failed on linux-next/master b992b79ca8bc336fa8e2c80990b5af80ed8f36fd]

in testcase: packetdrill
version: packetdrill-x86_64-31fbbb7-1_20240226
with following parameters:



compiler: gcc-13
test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-9980XE CPU @ 3.00GHz (Skylake) with 32G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)


we noticed this is an ipv6 related change, we observed there are quite some
'-ipv6' tests failed on this commit quite persistently but keeps clean on
parent, e.g.

=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler:
  lkp-skl-d08/packetdrill/debian-12-x86_64-20240206.cgz/x86_64-rhel-8.3-func/gcc-13

f5d59230ec26aa5e dfd2ee086a63c730022cb095576
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :30          70%          21:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-ack-per-1pkt_ipv6.fail
           :30          90%          27:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-ack-per-2pkt-send-5pkt_ipv6.fail
           :30          77%          23:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-ack-per-2pkt-send-6pkt_ipv6.fail
           :30          83%          25:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-ack-per-2pkt_ipv6.fail
           :30          90%          27:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-ack-per-4pkt_ipv6.fail
           :30          70%          21:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-after-idle_ipv6.fail
           :30          67%          20:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-after-win-update_ipv6.fail
           :30          73%          22:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-app-limited-9-packets-out_ipv6.fail
           :30          73%          22:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-app-limited_ipv6.fail
           :30          53%          16:30    packetdrill.packetdrill/gtests/net/tcp/slow_start/slow-start-fq-ack-per-2pkt_ipv6.fail



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/202406280948.73d69176-oliver.sang@intel.com


below is just an example, more details are in [1]



OK   [/lkp/benchmarks/packetdrill/gtests/net/tcp/slow_start/slow-start-after-idle.pkt (ipv4)]  <-- ok
stdout: 
stderr: 
FAIL [/lkp/benchmarks/packetdrill/gtests/net/tcp/slow_start/slow-start-after-idle.pkt (ipv6)]  <-- fail
stdout: 
stderr: 
OK   [/lkp/benchmarks/packetdrill/gtests/net/tcp/splice/tcp_splice_loop_test.pkt (ipv4)]



[1]
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240628/202406280948.73d69176-oliver.sang@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki