On Sat, 2023-01-28 at 17:41 +0800, Zhong Jinghua wrote: > This error will cause a warning: > kobject_add_internal failed for block (error: -2 parent: 1:0:0:1). > In the lower version (such as 5.10), there is no corresponding error > handling, continuing > to go down will trigger a kernel panic, so cc stable. Is this is important point and what you're saying is that this only panics on kernels before 5.10 or so because after that it's correctly failed by block device error handling so there's nothing to fix in later kernels? In that case, isn't the correct fix to look at backporting the block device error handling: commit 83cbce9574462c6b4eed6797bdaf18fae6859ab3 Author: Luis Chamberlain <mcgrof@xxxxxxxxxx> Date: Wed Aug 18 16:45:40 2021 +0200 block: add error handling for device_add_disk / add_disk ? James