Hi All, Facing below warning backtrace during resume from suspend to disk. I am using 4.1.15 freescale kernel. After this warning there is a huge time gap (nearly 10 sec) between Enabling non-boot cpus and CPU1 being up. Any pointers on this would be helpful. [ 545.227081] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree) [ 545.227081] [<80018674>] (unwind_backtrace) from [<80013c24>] (show_stack+0x20/0x24) [ 545.227081] [<80013c24>] (show_stack) from [<80684220>] (dump_stack+0x7c/0xbc) [ 545.227081] [<80684220>] (dump_stack) from [<80034fcc>] (warn_slowpath_common+0x94/0xc4) [ 545.227081] [<80034fcc>] (warn_slowpath_common) from [<800350b8>] (warn_slowpath_null+0x2c/0x34) [ 545.227081] [<800350b8>] (warn_slowpath_null) from [<8009ce24>] (clockevents_program_event+0x14c/0x15c) [ 545.227081] [<8009ce24>] (clockevents_program_event) from [<8009f39c>] (tick_resume_oneshot+0x5c/0x64) [ 545.227081] [<8009f39c>] (tick_resume_oneshot) from [<8009daa8>] (tick_resume_local+0x58/0x68) [ 545.227081] [<8009daa8>] (tick_resume_local) from [<8009daf4>] (tick_resume+0x1c/0x20) [ 545.227081] [<8009daf4>] (tick_resume) from [<80096328>] (timekeeping_resume+0x1c8/0x2bc) [ 545.227081] [<80096328>] (timekeeping_resume) from [<803e5a7c>] (syscore_resume+0x94/0x250) [ 545.227081] [<803e5a7c>] (syscore_resume) from [<800721b0>] (suspend_devices_and_enter+0x78c/0x99c) [ 545.227081] [<800721b0>] (suspend_devices_and_enter) from [<800728a0>] (pm_suspend+0x4e0/0x74c) [ 545.227081] [<800728a0>] (pm_suspend) from [<80070adc>] (state_store+0x74/0xa0) [ 545.227081] [<80070adc>] (state_store) from [<8031f3c4>] (kobj_attr_store+0x1c/0x28) [ 545.227081] [<8031f3c4>] (kobj_attr_store) from [<801a9814>] (sysfs_kf_write+0x50/0x54) [ 545.227081] [<801a9814>] (sysfs_kf_write) from [<801a8fc8>] (kernfs_fop_write+0xcc/0x1b8) [ 545.227081] [<801a8fc8>] (kernfs_fop_write) from [<8013c1d4>] (__vfs_write+0x3c/0xec) [ 545.227081] [<8013c1d4>] (__vfs_write) from [<8013ca88>] (vfs_write+0xa0/0x180) [ 545.227081] [<8013ca88>] (vfs_write) from [<8013d2fc>] (SyS_write+0x4c/0xa0) [ 545.227081] [<8013d2fc>] (SyS_write) from [<8000fd3c>] (__cpuset_migrate_return+0x0/0x24) Regards, IVID