[20006]     0 20006     6888     4807      20       3        0         -1000 blkid
[20007]     0 20007     6476     4411      20       3        0         -1000 blkid
[20008]     0 20008     6814     4741      19       3        0         -1000 blkid
INFO: rcu_preempt detected stalls on CPUs/tasks:
	Tasks blocked on level-0 rcu_node (CPUs 0-1): P19864
	(detected by 0, t=10503 jiffies, g=9705, c=9704, q=86)
blkid           R  running task    27280 19864  16153 0x00000000
Call Trace:
 preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3579
 ___preempt_schedule+0x16/0x18
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x3b/0x40 kernel/locking/spinlock.c:184
 spin_unlock include/linux/spinlock.h:357 [inline]
 task_unlock include/linux/sched/task.h:136 [inline]
 dump_tasks mm/oom_kill.c:403 [inline]
 dump_header+0x7bb/0x848 mm/oom_kill.c:428
 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861
 out_of_memory mm/oom_kill.c:1084 [inline]
 out_of_memory+0x2d2/0xab0 mm/oom_kill.c:1023
 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline]
 __alloc_pages_slowpath mm/page_alloc.c:4112 [inline]
 __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4277
 __alloc_pages include/linux/gfp.h:484 [inline]
 __alloc_pages_node include/linux/gfp.h:497 [inline]
 alloc_pages_node include/linux/gfp.h:511 [inline]
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline]
 do_anonymous_page mm/memory.c:3133 [inline]
 handle_pte_fault mm/memory.c:3987 [inline]
 __handle_mm_fault+0x1116/0x2700 mm/memory.c:4113
 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150
 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420
 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122
RIP: 07ff:0x1e87320
RSP: 9240ef10:0000000001e86eb0 EFLAGS: 0000000a
blkid           R  running task    27280 19864  16153 0x00000000
Call Trace:
 preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3579
 ___preempt_schedule+0x16/0x18
 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock+0x3b/0x40 kernel/locking/spinlock.c:184
 spin_unlock include/linux/spinlock.h:357 [inline]
 task_unlock include/linux/sched/task.h:136 [inline]
 dump_tasks mm/oom_kill.c:403 [inline]
 dump_header+0x7bb/0x848 mm/oom_kill.c:428
 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861
 out_of_memory mm/oom_kill.c:1084 [inline]
 out_of_memory+0x2d2/0xab0 mm/oom_kill.c:1023
 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline]
 __alloc_pages_slowpath mm/page_alloc.c:4112 [inline]
 __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4277
 __alloc_pages include/linux/gfp.h:484 [inline]
 __alloc_pages_node include/linux/gfp.h:497 [inline]
 alloc_pages_node include/linux/gfp.h:511 [inline]
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline]
 do_anonymous_page mm/memory.c:3133 [inline]
 handle_pte_fault mm/memory.c:3987 [inline]
 __handle_mm_fault+0x1116/0x2700 mm/memory.c:4113
 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150
 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420
 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122
RIP: 07ff:0x1e87320
RSP: 9240ef10:0000000001e86eb0 EFLAGS: 0000000a
[20009]     0 20009     6466     4410      19       3        0         -1000 blkid
[20010]     0 20010     6984     4939      19       3        0         -1000 blkid
[20011]     0 20011     7032     4994      21       3        0         -1000 blkid
[20012]     0 20012     6374     4337      18       3        0         -1000 blkid