偶尔我的笔记本电脑在尝试访问我的主目录时会死机。目前唯一的解决办法是重新启动，然后这种情况会持续一周。
/var/log/kern.log 有以下错误：
Nov 21 13:54:39 Laptop1 kernel: [231480.428107] INFO: task ls:10104 blocked for more than 120 seconds.
Nov 21 13:54:39 Laptop1 kernel: [231480.428114] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Nov 21 13:54:39 Laptop1 kernel: [231480.428120] ls D f5dbf6a0 0 10104 9964 0x00000004
Nov 21 13:54:39 Laptop1 kernel: [231480.428130] f3edbd40 00000086 00000001 f5dbf6a0 00000000 00000001 c175dfe0 c1868ec0
Nov 21 13:54:39 Laptop1 kernel: [231480.428145] c1868ec0 054eadaf 0000d250 f5005ec0 ee940cc0 f3e5b300 f3edbcf8 c10e8bfa
Nov 21 13:54:39 Laptop1 kernel: [231480.428159] f3edbd10 f3edbd10 f3edbd10 c102b505 fffba7e8 089fa000 f3edbd38 c10fb528
Nov 21 13:54:39 Laptop1 kernel: [231480.428173] Call Trace:
Nov 21 13:54:39 Laptop1 kernel: [231480.428189] [<c10e8bfa>] ? lru_cache_add_lru+0x2a/0x50
Nov 21 13:54:39 Laptop1 kernel: [231480.428199] [<c102b505>] ? __kunmap_atomic+0x75/0xa0
Nov 21 13:54:39 Laptop1 kernel: [231480.428207] [<c10fb528>] ? do_anonymous_page+0x1f8/0x280
Nov 21 13:54:39 Laptop1 kernel: [231480.428218] [<c152b656>] __mutex_lock_slowpath+0xc6/0x120
Nov 21 13:54:39 Laptop1 kernel: [231480.428225] [<c152b304>] mutex_lock+0x24/0x40
Nov 21 13:54:39 Laptop1 kernel: [231480.428246] [<f83ab87c>] cifs_reconnect_tcon+0x13c/0x2a0 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428255] [<c152fa00>] ? vmalloc_fault+0xee/0xee
Nov 21 13:54:39 Laptop1 kernel: [231480.428262] [<c152fc2f>] ? do_page_fault+0x22f/0x4a0
Nov 21 13:54:39 Laptop1 kernel: [231480.428276] [<f83abe3c>] smb_init+0x2c/0x90 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428285] [<c11aa42e>] ? ext4_htree_store_dirent+0x2e/0x120
Nov 21 13:54:39 Laptop1 kernel: [231480.428301] [<f83b0941>] CIFSSMBQPathInfo+0x41/0x210 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428319] [<f83c39e4>] ? cifs_get_inode_info+0x224/0x390 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428336] [<f83c3a21>] cifs_get_inode_info+0x261/0x390 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428354] [<f83bb35d>] ? build_path_from_dentry+0xcd/0x250 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428362] [<c102b69e>] ? kmap_atomic_prot+0xde/0x100
Nov 21 13:54:39 Laptop1 kernel: [231480.428370] [<c152c4cd>] ? _raw_spin_lock+0xd/0x10
Nov 21 13:54:39 Laptop1 kernel: [231480.428388] [<f83c6378>] ? _GetXid+0x58/0x80 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428405] [<f83c4f81>] cifs_revalidate_dentry_attr+0x111/0x1a0 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428423] [<f83c50e2>] cifs_getattr+0x52/0x120 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428431] [<c112c5b2>] vfs_getattr+0x42/0x70
Nov 21 13:54:39 Laptop1 kernel: [231480.428448] [<f83c5090>] ? cifs_revalidate_dentry+0x40/0x40 [cifs]
Nov 21 13:54:39 Laptop1 kernel: [231480.428455] [<c112c647>] vfs_fstatat+0x67/0x80
Nov 21 13:54:39 Laptop1 kernel: [231480.428461] [<c112c680>] vfs_lstat+0x20/0x30
Nov 21 13:54:39 Laptop1 kernel: [231480.428468] [<c112c946>] sys_lstat64+0x16/0x30
Nov 21 13:54:39 Laptop1 kernel: [231480.428475] [<c11341ed>] ? link_path_walk+0x79d/0x8a0
Nov 21 13:54:39 Laptop1 kernel: [231480.428483] [<c152c8e4>] syscall_call+0x7/0xb
答案1
只是为了将答案从评论移到正确的答案 - 在主目录中安装了 Windows 共享（请参阅问题回溯中的 cifs 引用）。
卸载此共享绕过了该问题，但是问题的核心尚未解决。