[Please ignore if it already reported] Regression found, The following kernel warning reported on Linux next 20210621 while booting arm64 Juno-r2 device. And also noticed a similar crash on an x86_64 machine. Crash log: ----------------- [ 29.244230] ------------[ cut here ]------------ [ 29.248861] cfs_rq->avg.load_avg || cfs_rq->avg.util_avg || cfs_rq->avg.runnable_avg [ 29.248874] WARNING: CPU: 1 PID: 156 at kernel/sched/fair.c:3275 update_blocked_averages+0x628/0x660 [ 29.265784] Modules linked in: fuse [ 29.269282] CPU: 1 PID: 156 Comm: kworker/u12:2 Not tainted 5.13.0-rc7-next-20210621 #1 [ 29.277305] Hardware name: ARM Juno development board (r2) (DT) [ 29.283241] Workqueue: 0x0 (rpciod) [ 29.286828] pstate: 600000c5 (nZCv daIF -PAN -UAO -TCO BTYPE=--) [ 29.292844] pc : update_blocked_averages+0x628/0x660 [ 29.297817] lr : update_blocked_averages+0x628/0x660 [ 29.302788] sp : ffff8000133fbb60 [ 29.306103] x29: ffff8000133fbb60 x28: ffff00097ef382c0 x27: ffff00080090ca00 [ 29.313264] x26: 00000006cacd5228 x25: 0000000000000000 x24: 00000000000000c0 [ 29.313277] x23: 0000000000000000 x22: ffff8000125b3378 x21: 0000000000000000 [ 29.313288] x20: ffff00097ef383c0 x19: ffff00080090cb40 x18: 0000000000000010 [ 29.313299] x17: 6e6e75722e677661 x16: 3e2d71725f736663 x15: 207c7c206776615f [[0;32m OK [0m] Started udev [ 29.341880] x14: 6c6974752e677661 x13: 6776615f656c6261 x12: 6e6e75722e677661 Coldplug all Devices.[ 29.351892] x11: ffff8000126419b0 x10: ffff800012629970 x9 : ffff800010111bec [ 29.360858] x8 : 0000000000017fe8 x7 : c0000000ffffefff x6 : 0000000000000001 [ 29.368171] x5 : 0000000000000001 x4 : 0000000000000000 x3 : 0000000000000027 [ 29.375324] x2 : 0000000000000023 x1 : 0000000000000000 x0 : 0000000000000000 [ 29.382477] Call trace: [ 29.384923] update_blocked_averages+0x628/0x660 [ 29.389548] newidle_balance+0x208/0x478 [ 29.393477] pick_next_task_fair+0x58/0x3b8 [ 29.397666] __schedule+0x1c4/0x1250 [ 29.401249] schedule+0x4c/0x100 [ 29.404481] worker_thread+0xc0/0x428 [ 29.408147] kthread+0x140/0x158 [ 29.411380] ret_from_fork+0x10/0x18 [ 29.414960] ---[ end trace 8349fb64d5c118de ]--- Full test log, https://lkft.validation.linaro.org/scheduler/job/2935085#L1120 metadata: git branch: master git repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git describe: next-20210621 kernel-config: https://builds.tuxbuild.com/1uG71M0P29j62n5g5DXGExv8HJi/config Steps to reproduce: -------------------------- Boot arm64 kernel from this build on Juno-r2 and will get warning. Image: https://builds.tuxbuild.com/1uG71M0P29j62n5g5DXGExv8HJi/Image.gz vmlinux: https://builds.tuxbuild.com/1uG71M0P29j62n5g5DXGExv8HJi/vmlinux.xz System.map: https://builds.tuxbuild.com/1uG71M0P29j62n5g5DXGExv8HJi/System.map Few more log on x86: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20210621/testrun/4955196/suite/linux-log-parser/test/check-kernel-exception-2934648/log https://lkft.validation.linaro.org/scheduler/job/2934648#L1170 -- Linaro LKFT https://lkft.linaro.org
