HRTIMER陷阱

现象

现象一,多数进程卡死,呈D状态

从卡死进程调用栈看,大部分类似:

[<ffffffff81132b20>] inotify_idr_find_locked+0x5a/0x6d
[<ffffffff81132cfc>] inotify_remove_from_idr+0x1c9/0x1cb
[<ffffffff8106104e>] default_wake_function+0x0/0x9
[<ffffffff81058d82>] __synchronize_srcu+0xd7/0xe2
[<ffffffff810588af>] wakeme_after_rcu+0x0/0x9
[<ffffffff81130ecd>] fsnotify_destroy_group+0x15/0x26
[<ffffffff81132779>] inotify_release+0x20/0x24
[<ffffffff81101771>] __fput+0xe0/0x1b3
[<ffffffff8105e7a0>] should_resched+0x5/0x23
[<ffffffff81052f4a>] task_work_run+0x7b/0x91
[<ffffffff8103f6e3>] do_exit+0x3c3/0x8f6
[<ffffffff8103fd80>] do_group_exit+0x68/0x9a
[<ffffffff8103fdc1>] __wake_up_parent+0x0/0x1d
[<ffffffff814a2029>] system_call_fastpath+0x16/0x1b

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