On arm32 beagleboard x15 the kernel warning generated while booting linux next kernel 5.4.0-rc7-next-20191113. The config link attached to this email. metadata: git branch: master git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git commit: 4e8f108c3af2d6922a64df9f3d3d488c74f6009d git describe: next-20191113 make_kernelversion: 5.4.0-rc7 kernel-config: http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/am57xx-evm/lkft/linux-next/645/config Kernel warning log from boot: -------------------------------------- [ 0.015346] ------------[ cut here ]------------ [ 0.015402] WARNING: CPU: 0 PID: 0 at /usr/src/kernel/kernel/cgroup/cgroup.c:1969 cgroup_setup_root+0x36c/0x4e8 [ 0.015425] Modules linked in: [ 0.015457] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7-next-20191113 #1 [ 0.015474] Hardware name: Generic DRA74X (Flattened Device Tree) [ 0.015490] Backtrace: [ 0.015516] [<c040f9d0>] (dump_backtrace) from [<c040fce4>] (show_stack+0x20/0x24) [ 0.015536] r7:c1fcf52c r6:00000000 r5:60000053 r4:c1fcf52c [ 0.015558] [<c040fcc4>] (show_stack) from [<c13751b4>] (dump_stack+0xe8/0x114) [ 0.015582] [<c13750cc>] (dump_stack) from [<c0459f2c>] (__warn+0x100/0x118) [ 0.015602] r10:c1e48108 r9:c053afb4 r8:000007b1 r7:c19ba84c r6:00000009 r5:00000000 [ 0.015619] r4:00000000 r3:3b5e5f67 [ 0.015641] [<c0459e2c>] (__warn) from [<c0459ffc>] (warn_slowpath_fmt+0xb8/0xc0) [ 0.015660] r9:00000009 r8:c053afb4 r7:000007b1 r6:c19ba84c r5:00000000 r4:c1e086c8 [ 0.015683] [<c0459f48>] (warn_slowpath_fmt) from [<c053afb4>] (cgroup_setup_root+0x36c/0x4e8) [ 0.015702] r9:c1e48c40 r8:c1e48c28 r7:00000001 r6:00000001 r5:c1e086c8 r4:c1e01f24 [ 0.015726] [<c053ac48>] (cgroup_setup_root) from [<c1c2a260>] (cgroup_init+0x108/0x560) [ 0.015745] r10:c200d880 r9:00000001 r8:ffffffff r7:c200d880 r6:c26340e0 r5:c200d8d4 [ 0.015760] r4:c1e48108 [ 0.015782] [<c1c2a158>] (cgroup_init) from [<c1c010fc>] (start_kernel+0x4f0/0x534) [ 0.015800] r10:c200d880 r9:00000001 r8:ffffffff r7:c200d880 r6:c1cf8a64 r5:c200d8d4 [ 0.015816] r4:c1e086c8 [ 0.015838] [<c1c00c0c>] (start_kernel) from [<00000000>] (0x0) [ 0.015856] r10:30c5387d r9:412fc0f2 r8:8ffdd000 r7:00000000 r6:30c0387d r5:00000000 [ 0.015872] r4:c1c00330 [ 0.015888] irq event stamp: 413 [ 0.015916] hardirqs last enabled at (421): [<c04d88e8>] console_unlock+0x47c/0x670 [ 0.015941] hardirqs last disabled at (428): [<c04d8544>] console_unlock+0xd8/0x670 [ 0.015968] softirqs last enabled at (12): [<c0402f44>] __do_softirq+0x3e4/0x5d0 [ 0.015993] softirqs last disabled at (5): [<c0463e24>] irq_exit+0x170/0x180 [ 0.016029] ---[ end trace b9be8c6dacc21523 ]--- complete test log link, https://qa-reports.linaro.org/lkft/linux-next-oe/build/next-20191113/testrun/1008653/log - Naresh
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