Re: [PATCH net] net: drop pulled SKB_GSO_FRAGLIST skb

[kernel test robot]

Hello,

kernel test robot noticed "kernel-selftests.net.udpgro_fwd.sh.fail" on:

commit: 7ed67c5ee988b506bd05e115e9e8299bccbabffd ("[PATCH net] net: drop pulled SKB_GSO_FRAGLIST skb")
url: https://github.com/intel-lab-lkp/linux/commits/shiming-cheng-mediatek-com/net-drop-pulled-SKB_GSO_FRAGLIST-skb/20240430-133823
base: https://git.kernel.org/cgit/linux/kernel/git/davem/net.git ba1cb99b559e3b12db8b65ca9ff03358ea318064
patch link: https://lore.kernel.org/all/20240428143010.18719-1-shiming.cheng@xxxxxxxxxxxx/
patch subject: [PATCH net] net: drop pulled SKB_GSO_FRAGLIST skb

in testcase: kernel-selftests
version: kernel-selftests-x86_64-977d51cf-1_20240508
with following parameters:

	group: net



compiler: gcc-13
test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 32G 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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-lkp/202405201037.5e36a83-oliver.sang@xxxxxxxxx



# timeout set to 3600
# selftests: net: udpgro_fwd.sh
# IPv4
# No GRO                                   ok
# GRO frag list                           ./udpgso_bench_rx: wrong packet number! got 0, expected 10
# 
#  fail client exit code 0, server 1
# GRO fwd                                  ok
# UDP fwd perf                            udp tx:   1488 MB/s    25250 calls/s  25250 msg/s
# udp rx:      1 MB/s     1280 calls/s
# udp tx:   1501 MB/s    25471 calls/s  25471 msg/s
# udp rx:      1 MB/s     1280 calls/s
# udp tx:   1512 MB/s    25656 calls/s  25656 msg/s
# udp rx:      1 MB/s     1380 calls/s
# UDP GRO fwd perf                        udp rx:    337 MB/s   272896 calls/s
# udp tx:   2183 MB/s    37033 calls/s  37033 msg/s
# udp rx:    376 MB/s   304320 calls/s
# udp tx:   2162 MB/s    36675 calls/s  36675 msg/s
# udp rx:    402 MB/s   325376 calls/s
# udp tx:   2167 MB/s    36758 calls/s  36758 msg/s
# GRO frag list over UDP tunnel            ok
# GRO fwd over UDP tunnel                  ok
# IPv6
# No GRO                                   ok
# GRO frag list                           ./udpgso_bench_rx: wrong packet number! got 0, expected 10
# 
#  fail client exit code 0, server 1
# GRO fwd                                  ok
# UDP fwd perf                            udp rx:     37 MB/s    30033 calls/s
# udp tx:   2220 MB/s    37661 calls/s  37661 msg/s
# udp rx:     99 MB/s    80141 calls/s
# udp tx:   2179 MB/s    36973 calls/s  36973 msg/s
# udp tx:   2161 MB/s    36654 calls/s  36654 msg/s
# udp rx:    104 MB/s    84775 calls/s
# UDP GRO fwd perf                        udp rx:    162 MB/s   131584 calls/s
# udp tx:   2113 MB/s    35848 calls/s  35848 msg/s
# udp rx:    263 MB/s   213370 calls/s
# udp tx:   2097 MB/s    35574 calls/s  35574 msg/s
# udp rx:    217 MB/s   175616 calls/s
# udp tx:   2107 MB/s    35748 calls/s  35748 msg/s
# GRO frag list over UDP tunnel            ok
# GRO fwd over UDP tunnel                  ok
not ok 53 selftests: net: udpgro_fwd.sh # exit=1



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20240520/202405201037.5e36a83-oliver.sang@xxxxxxxxx



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