[ 5068] 0 5068 9186 7116 25 3 0 -1000 blkid [ 5069] 0 5069 5530 311 15 3 0 -1000 udevd [ 5070] 0 5070 5530 311 15 3 0 -1000 udevd INFO: rcu_preempt detected stalls on CPUs/tasks: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5012 (detected by 1, t=10503 jiffies, g=2205, c=2204, q=14) udevd R running task 27704 5012 190 0x00000000 Call Trace: preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3578 ___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:461 [inline] __alloc_pages_node include/linux/gfp.h:474 [inline] alloc_pages_node include/linux/gfp.h:488 [inline] __page_cache_alloc include/linux/pagemap.h:226 [inline] pagecache_get_page+0x246/0x7e0 mm/filemap.c:1516 filemap_fault+0x8da/0x18a0 mm/filemap.c:2517 ext4_filemap_fault+0x84/0xb0 fs/ext4/inode.c:6233 __do_fault+0x100/0x380 mm/memory.c:3223 do_read_fault mm/memory.c:3633 [inline] do_fault mm/memory.c:3759 [inline] handle_pte_fault mm/memory.c:3989 [inline] __handle_mm_fault+0x9bf/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: 3e2ff897:0x5 RSP: a4f030:0000000000625500 EFLAGS: 00a59a10 udevd R running task 27704 5012 190 0x00000000 Call Trace: preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3578 ___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:461 [inline] __alloc_pages_node include/linux/gfp.h:474 [inline] alloc_pages_node include/linux/gfp.h:488 [inline] __page_cache_alloc include/linux/pagemap.h:226 [inline] pagecache_get_page+0x246/0x7e0 mm/filemap.c:1516 filemap_fault+0x8da/0x18a0 mm/filemap.c:2517 ext4_filemap_fault+0x84/0xb0 fs/ext4/inode.c:6233 __do_fault+0x100/0x380 mm/memory.c:3223 do_read_fault mm/memory.c:3633 [inline] do_fault mm/memory.c:3759 [inline] handle_pte_fault mm/memory.c:3989 [inline] __handle_mm_fault+0x9bf/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: 3e2ff897:0x5 RSP: a4f030:0000000000625500 EFLAGS: 00a59a10 [ 5071] 0 5071 5530 311 15 3 0 -1000 udevd [ 5072] 0 5072 5530 311 15 3 0 -1000 udevd [ 5073] 0 5073 5530 312 15 3 0 -1000 udevd [ 5074] 0 5074 5530 311 15 3 0 -1000 udevd [ 5076] 0 5076 8396 6325 23 3 0 -1000 blkid [ 5075] 0 5075 5530 312 15 3 0 -1000 udevd [ 5078] 0 5078 5530 311 15 3 0 -1000 udevd [ 5079] 0 5079 5530 313 15 3 0 -1000 udevd [ 5080] 0 5080 8688 6650 23 3 0 -1000 blkid [ 5081] 0 5081 8432 6389 24 3 0 -1000 blkid [ 5082] 0 5082 8452 6389 23 3 0 -1000 blkid [ 5083] 0 5083 8036 5995 22 3 0 -1000 blkid