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BL1PR11MB5301 X-OriginatorOrg: intel.com 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 | 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