Ubuntu
linux package

  1. Bug #1879633
  2. Comment #37

Comment 37 for bug 1879633

Revision history for this message
sadxps (sadxps) wrote :

I determined the cause of the boot hang. It seems an existing hidden network connection located in `/etc/NetworkManager/system-connections/` was the culprit. Below are the steps to reproduce.

Step 1. Download attached `BrokenConnection.nmconnection` file
Step 2. Place the file in `/etc/NetworkManager/system-connections/`
Step 3. Either run `sudo service NetworkManager` or `sudo reboot`
Step 4. Note the system freezes if restarting NetworkMangaer or displays a kernel panic during boot.

```
BUG: Kernel Null pointer Dereference, address: 0000000000000008
#PF: supervisor read acess in kernel mode
#PF: error_code(0x0000) 0 not present page
PGD 0 PFD 0
Oops: 0000 [#1] SMP NOPTI
CPU: 7 PID: 0 Comm: swapper/7 Not tainted 5.9.0-2002-generic #3+lp1879633.2-Ubuntu
Hardware name: Dell Inc. XPS 13 9310/0F7M4C, BIOS 1.1.1 10/05/2020
RIP: 0010:skb_release_data+0x74/0x1b0
```