/var/crash 中有几次崩溃，这是最后一个：-
ProblemType: KernelOops
Annotation: Your system might become unstable now and might need to be restarted.
Date: Fri Jul 23 18:10:54 2021
Failure: oops
OopsText:
BUG: Bad rss-counter state mm:00000000c098a229 idx:2 val:-1
usblp0: removed
usblp 1-5:1.0: usblp0: USB Bidirectional printer dev 3 if 0 alt 0 proto 2 vid 0x04F9 pid 0x02EC
<44>[ 18.329026] systemd-journald[358]: File /var/log/journal/b022dca21fd4480baeeb84f47ab439d3/user-1000.journal corrupted or uncleanly shut down, renaming and replacing.
vboxdrv: loading out-of-tree module taints kernel.
vboxdrv: module verification failed: signature and/or required key …