Greeting, FYI, we noticed the following commit (built with gcc-11): commit: 72fd55c0dbb1ad5ba283ca80abc9546702815a33 ("[PATCH v2 net-next] net: generalize skb freeing deferral to per-cpu lists") url: https://github.com/intel-lab-lkp/linux/commits/Eric-Dumazet/net-generalize-skb-freeing-deferral-to-per-cpu-lists/20220423-060710 base: https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git c78c5a660439d4d341a03b651541fda3ebe76160 patch link: https://lore.kernel.org/netdev/20220422201237.416238-1-eric.dumazet@gmail.com in testcase: xfstests version: xfstests-x86_64-46e1b83-1_20220414 with following parameters: disk: 4HDD fs: ext4 fs2: smbv3 test: generic-group-10 ucode: 0xec test-description: xfstests is a regression test suite for xfs and other files ystems. test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git on test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz with 16G memory caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): If you fix the issue, kindly add following tag Reported-by: kernel test robot [ 80.428226][ T1836] Attempt to set a LOCK_MAND lock via flock(2). This support has been removed and the request ignored. [ 80.739189][ T370] generic/207 0s [ 80.739198][ T370] [ 80.785302][ T1696] run fstests generic/208 at 2022-05-06 02:42:26 [ 81.143444][ T1836] Attempt to set a LOCK_MAND lock via flock(2). This support has been removed and the request ignored. [ 89.609627][ T58] kworker/u16:5 invoked oom-killer: gfp_mask=0xcd0(GFP_KERNEL|__GFP_RECLAIMABLE), order=0, oom_score_adj=0 [ 89.620805][ T58] CPU: 0 PID: 58 Comm: kworker/u16:5 Not tainted 5.18.0-rc3-00568-g72fd55c0dbb1 #1 [ 89.629899][ T58] Hardware name: HP HP Z240 SFF Workstation/802E, BIOS N51 Ver. 01.63 10/05/2017 [ 89.638822][ T58] Workqueue: writeback wb_workfn (flush-8:16) [ 89.644727][ T58] Call Trace: [ 89.647863][ T58] [ 89.650649][ T58] dump_stack_lvl (kbuild/src/consumer/lib/dump_stack.c:107 (discriminator 1)) [ 89.654992][ T58] dump_header (kbuild/src/consumer/mm/oom_kill.c:73 kbuild/src/consumer/mm/oom_kill.c:461) [ 89.659250][ T58] oom_kill_process.cold (kbuild/src/consumer/mm/oom_kill.c:979) [ 89.664110][ T58] out_of_memory (kbuild/src/consumer/mm/oom_kill.c:1119 (discriminator 4)) To reproduce: git clone https://github.com/intel/lkp-tests.git cd lkp-tests sudo bin/lkp install job.yaml # job file is attached in this email bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run sudo bin/lkp run generated-yaml-file # if come across any failure that blocks the test, # please remove ~/.lkp and /lkp dir to run from a clean state. -- 0-DAY CI Kernel Test Service https://01.org/lkp