在 Ubuntu 18.04 上运行定制的 4.4.293 linux 内核 - 无需修改。在将文件复制到外部驱动器时使用外部 Seagate 8TB HDD 进行存储时，已经注意到这一点。它间歇性地发生，并且可以在同一个复制会话期间继续。没有其他内核恐慌。副本仍在继续，但这让我担心我可能会收到损坏的数据。可能相关的是，有问题的驱动器正在使用 Veracrypt 的磁盘加密，但从 VC 中没有看到错误。我还为这个驱动器禁用了 UAS，因为出现了更多与 UAS 和这个驱动器相关的错误（使用这个驱动器的“usb-storage quirks=”选项）。
/var/log/kern.log 中的示例：
Dec 4 12:34:58 localhost kernel: [ 7200.380699] INFO: task jbd2/dm-1-8:24036 blocked for more than 120 seconds.
Dec 4 12:34:58 localhost kernel: [ 7200.380705] Tainted: G OE 4.4.293-1 #1
Dec 4 12:34:58 localhost kernel: [ 7200.380707] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Dec 4 12:34:58 localhost kernel: [ 7200.380709] jbd2/dm-1-8 D ffff88041337fa80 0 24036 2 0x00000000
Dec 4 12:34:58 localhost kernel: [ 7200.380715] ffff88041337fa80 0000000000000202 ffff88041aeaac00 ffff88002de58000
Dec 4 12:34:58 localhost kernel: [ 7200.380719] 0000000000000000 ffff88041d2db300 7fffffffffffffff ffff88041337fbc0
Dec 4 12:34:58 localhost kernel: [ 7200.380722] ffffffff8180adf0 ffff88041337fa90 ffffffff8180a5bb ffff88041337fb10
Dec 4 12:34:58 localhost kernel: [ 7200.380726] Call Trace:
Dec 4 12:34:58 localhost kernel: [ 7200.380736] [] ? bit_wait+0x60/0x60
Dec 4 12:34:58 localhost kernel: [ 7200.380739] [] schedule+0x2b/0x80
Dec 4 12:34:58 localhost kernel: [ 7200.380744] [] schedule_timeout+0x1ad/0x270
Dec 4 12:34:58 localhost kernel: [ 7200.380748] [] ? ktime_get+0x3f/0xb0
Dec 4 12:34:58 localhost kernel: [ 7200.380750] [] ? ktime_get+0x3f/0xb0
Dec 4 12:34:58 localhost kernel: [ 7200.380753] [] ? bit_wait+0x60/0x60
Dec 4 12:34:58 localhost kernel: [ 7200.380756] [] io_schedule_timeout+0xa4/0x110
Dec 4 12:34:58 localhost kernel: [ 7200.380760] [] bit_wait_io+0x1b/0x70
Dec 4 12:34:58 localhost kernel: [ 7200.380763] [] __wait_on_bit+0x50/0xa0
Dec 4 12:34:58 localhost kernel: [ 7200.380768] [] wait_on_page_bit+0xc6/0xd0
Dec 4 12:34:58 localhost kernel: [ 7200.380772] [] ? autoremove_wake_function+0x40/0x40
Dec 4 12:34:58 localhost kernel: [ 7200.380776] [] __filemap_fdatawait_range+0xe4/0x140
Dec 4 12:34:58 localhost kernel: [ 7200.380781] [] filemap_fdatawait_range+0x14/0x30
Dec 4 12:34:58 localhost kernel: [ 7200.380785] [] filemap_fdatawait+0x23/0x30
Dec 4 12:34:58 localhost kernel: [ 7200.380790] [] jbd2_journal_commit_transaction+0x707/0x1800
Dec 4 12:34:58 localhost kernel: [ 7200.380793] [] ? __schedule+0x2a2/0x840
Dec 4 12:34:58 localhost kernel: [ 7200.380796] [] ? __schedule+0x2ae/0x840
Dec 4 12:34:58 localhost kernel: [ 7200.380800] [] ? lock_timer_base+0x56/0x70
Dec 4 12:34:58 localhost kernel: [ 7200.380804] [] kjournald2+0xba/0x250
Dec 4 12:34:58 localhost kernel: [ 7200.380808] [] ? wake_atomic_t_function+0x60/0x60
Dec 4 12:34:58 localhost kernel: [ 7200.380811] [] ? commit_timeout+0x10/0x10
Dec 4 12:34:58 localhost kernel: [ 7200.380815] [] kthread+0xd8/0xf0
Dec 4 12:34:58 localhost kernel: [ 7200.380818] [] ? __schedule+0x2ae/0x840
Dec 4 12:34:58 localhost kernel: [ 7200.380822] [] ? kthread_create_on_node+0x190/0x190
Dec 4 12:34:58 localhost kernel: [ 7200.380825] [] ret_from_fork+0x55/0x80
Dec 4 12:34:58 localhost kernel: [ 7200.380828] [] ? kthread_create_on_node+0x190/0x190