[ 798.886347][T12606] Mirror/redirect action on [ 813.894121][ C0] clocksource: Long readout interval, skipping watchdog check: cs_nsec: 1528046548 wd_nsec: 1528046590 [ 840.953131][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 840.953444][ C0] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-3): P10/1:b..l [ 840.953831][ C0] rcu: (detected by 0, t=26002 jiffies, g=296265, q=311 ncpus=4) [ 840.954080][ C0] task:kworker/0:1 state:R running task stack:27888 pid:10 tgid:10 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 840.954926][ C0] Workqueue: events free_obj_work [ 840.955103][ C0] Call Trace: [ 840.955230][ C0] [ 840.955319][ C0] __schedule+0xae2/0x1720 [ 840.955492][ C0] ? io_schedule_timeout+0x130/0x130 [ 840.955660][ C0] ? mark_held_locks+0x40/0x70 [ 840.955831][ C0] preempt_schedule_irq+0x51/0xa0 [ 840.956014][ C0] irqentry_exit+0xf4/0x4d0 [ 840.956179][ C0] ? common_interrupt+0xc2/0xf0 [ 840.956345][ C0] asm_common_interrupt+0x26/0x40 [ 840.956514][ C0] RIP: 0010:lock_acquire.part.0+0xfa/0x260 [ 840.956731][ C0] Code: ff 65 0f c1 05 c7 c6 26 04 83 f8 01 4c 8b 14 24 0f 85 30 01 00 00 9c 58 f6 c4 02 0f 85 4d 01 00 00 4d 85 d2 0f 85 16 01 00 00 <48> 8b 44 24 30 65 48 2b 05 99 80 26 04 0f 85 43 01 00 00 48 83 c4 [ 840.957340][ C0] RSP: 0018:ffa00000000a7588 EFLAGS: 00000206 [ 840.957553][ C0] RAX: 0000000000000046 RBX: 0000000000000000 RCX: e01bc8dbff004aaf [ 840.957801][ C0] RDX: 0000000000000003 RSI: ffffffff8779c9ca RDI: ffffffff8726ad00 [ 840.958058][ C0] RBP: 0000000000000000 R08: ff11000001ab8ae0 R09: ff11000001ab8ae0 [ 840.958310][ C0] R10: 0000000000000200 R11: 0000000000000001 R12: ffffffff87d71040 [ 840.958558][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 [ 840.958810][ C0] ? rcu_is_watching+0x15/0xd0 [ 840.958990][ C0] ? unwind_next_frame+0x151/0x1cc0 [ 840.959154][ C0] ? lock_acquire+0x10a/0x150 [ 840.959318][ C0] unwind_next_frame+0x165/0x1cc0 [ 840.959484][ C0] ? unwind_next_frame+0x151/0x1cc0 [ 840.959649][ C0] ? process_one_work+0xd57/0x1390 [ 840.959814][ C0] ? stack_access_ok+0x1d0/0x1d0 [ 840.959990][ C0] ? __unwind_start+0x3f6/0x8c0 [ 840.960157][ C0] ? write_profile+0xf0/0xf0 [ 840.960322][ C0] arch_stack_walk+0x9b/0x100 [ 840.960494][ C0] ? process_one_work+0xd57/0x1390 [ 840.960660][ C0] stack_trace_save+0x93/0xc0 [ 840.960831][ C0] ? filter_irq_stacks+0xd0/0xd0 [ 840.961009][ C0] ? rcu_read_lock_any_held+0x66/0x90 [ 840.961177][ C0] kasan_save_stack+0x30/0x50 [ 840.961341][ C0] ? kasan_save_stack+0x30/0x50 [ 840.961503][ C0] ? kasan_save_track+0x14/0x30 [ 840.961666][ C0] ? kasan_save_free_info+0x3b/0x60 [ 840.961828][ C0] ? __kasan_slab_free+0x43/0x70 [ 840.962009][ C0] ? kmem_cache_free+0xfe/0x5e0 [ 840.962172][ C0] ? free_object_list.isra.0+0xf7/0x2e0 [ 840.962334][ C0] ? free_obj_work+0x1a6/0x410 [ 840.962495][ C0] ? process_one_work+0xd57/0x1390 [ 840.962669][ C0] kasan_save_track+0x14/0x30 [ 840.962831][ C0] kasan_save_free_info+0x3b/0x60 [ 840.963003][ C0] __kasan_slab_free+0x43/0x70 [ 840.963167][ C0] kmem_cache_free+0xfe/0x5e0 [ 840.963332][ C0] ? free_object_list.isra.0+0xf7/0x2e0 [ 840.963494][ C0] ? find_held_lock+0x2b/0x80 [ 840.963659][ C0] ? free_object_list.isra.0+0xf7/0x2e0 [ 840.963820][ C0] free_object_list.isra.0+0xf7/0x2e0 [ 840.963999][ C0] free_obj_work+0x1a6/0x410 [ 840.964161][ C0] ? process_one_work+0xd16/0x1390 [ 840.964325][ C0] ? object_cpu_offline+0x350/0x350 [ 840.964492][ C0] ? rcu_is_watching+0x15/0xd0 [ 840.964654][ C0] ? process_one_work+0xd16/0x1390 [ 840.964815][ C0] ? lock_acquire+0x10a/0x150 [ 840.965001][ C0] ? rcu_is_watching+0x15/0xd0 [ 840.965166][ C0] process_one_work+0xd57/0x1390 [ 840.965333][ C0] ? pwq_dec_nr_in_flight+0x700/0x700 [ 840.965496][ C0] ? lock_acquire.part.0+0xbc/0x260 [ 840.965665][ C0] ? assign_work+0x152/0x380 [ 840.965829][ C0] worker_thread+0x4d6/0xd40 [ 840.966008][ C0] ? process_one_work+0x1390/0x1390 [ 840.966168][ C0] kthread+0x355/0x5b0 [ 840.966292][ C0] ? kthread_is_per_cpu+0xe0/0xe0 [ 840.966454][ C0] ? __lock_release.isra.0+0x59/0x170 [ 840.966623][ C0] ? rcu_is_watching+0x15/0xd0 [ 840.966788][ C0] ? kthread_is_per_cpu+0xe0/0xe0 [ 840.966968][ C0] ret_from_fork+0x3fb/0x510 [ 840.967133][ C0] ? arch_exit_to_user_mode_prepare.isra.0+0x140/0x140 [ 840.967338][ C0] ? __switch_to+0x53c/0xd00 [ 840.967501][ C0] ? kthread_is_per_cpu+0xe0/0xe0 [ 840.967668][ C0] ret_from_fork_asm+0x11/0x20 [ 840.967841][ C0] [ 842.205849][ C0] clocksource: Long readout interval, skipping watchdog check: cs_nsec: 20863773636 wd_nsec: 20863774714 [ 887.920118][T13055] tc (13055) used greatest stack depth: 23512 bytes left