VirtualBox 5.0.26 won't boot Linux 4.6.4 on Fedora 24

[R D]

• Host: Fedora 24 Linux 4.6.4-301.fc24.x86_64
• VirtualBox: 5.0.26 (also happens on 5.0.24)
• Guest: Fedora 24 LXDE spin. Linux 4.6.4-301.fc24.x86_64

(Linux 4.6.3-300.fc24.x86_64 works!)

[R D]

Same or similar problem on kernel 4.6.5-300

[R D]

Figured out that the problem is the default IDE controller (+ CDROM) that is added for a new instance. If I remove the IDE controller and add a new CDROM to the SATA controller, everything works.

[Frank Mehnert]

Cannot reproduce this with 5.0.27 nor 5.1.3. I'm not aware of any corresponding changes but could you test a test build from here? I used Fedora 24 with Linux 4.6.5-300.

[R D]

I could reproduce on 5.0.26. I think the magic combo is the IDE controller AND USB 3.0.

Steps:

1. Create New VM
   • Name: TestF24
   • Type: Linux
   • Version: Fedora (64-bit)
   • Create new disk, 8GB, dynamic
2. Settings
   • Attach Live CD to IDE controller : Fedora LXDE Live CD x86_64-24-1.2.iso
   • USB -> enable 3.0
3. Install to disk
4. Shutdown
5. Remove Live CD
6. Start
7. dnf update (this should get kernel 4.6.5-300 as of today)
8. Reboot
9. Error after 23s

[Frank Mehnert]

Good catch! I see the same problem if I enable USB3.

[Frank Mehnert]

In our opinion this is a bug in the Linux kernel which was recently introduced. This bug will probably never be triggered on real hardware.

[Frank Mehnert]

For reference, see ​here. VBox 5.1.4 contains a workaround but once this patch is added to the kernel, our workaround is no longer necessary.