Hi . The crash has been fixed through backport some patches.of vfio module. Thanks a lot. At 2023-09-06 07:25:18, "Stephen Hemminger" wrote: >On Thu, 24 Aug 2023 09:06:44 +0800 (CST) >jinag <15720603159@163.com> wrote: > >> This is definitely a bug in the kernel, I am looking to see if there's a bugfix patch in the kernel community. but maybe the app passed an incorrect parameter that caused kernel crash? >> The kernel version is 4.18.0-147.5.1.9, it is based on upstream linux at version 4.18.0 > >Is this RHEL? >4.18 was end of life in November 2018.