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Bug #3392

open

Fails to shutdown and boot properly

Added by mneumann 16 days ago. Updated 6 days ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
6.6
Start date:
01/22/2026
Due date:
% Done:

0%

Estimated time:

Description

Tested with HEAD as of Tue Jan 20, 2026 (868971441c9e703282089412240c0361dd9687fd)

Since commit 41fb76421dce (vkernel: Restore MAP_VPAGETABLE), shutdown hangs, reporting:

"malloc_uninit: 120 bytes of 'HAMMER2-msg' still allocated on cpu 8".

It also takes unusually long between running "halt -p" and the start of the shutdown procedure.

The next boot then hangs within "Mounting tmpfs at /var/run/shm".

Chrome also once seemed to fail starting (or it took unusual long for me to think it failed).

One other person has also reported some strange timeouts happening with commit "41fb76421dce" (reported on IRC).

Screenshots attached, starting the "hang" on shutdown and boot.

Files

Download all files
bug1.small.jpg (723 KB) bug1.small.jpg Hang on shutdown mneumann, 01/22/2026 08:20 AM
bug2.small.jpg (630 KB) bug2.small.jpg Hang on startup mneumann, 01/22/2026 08:21 AM
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 #1

Updated by mneumann 10 days ago

I tracked the problem down to commit 8ec33efba7563efab10f0d90b5684480d94daf0a
(vkernel: Restore MAP_VPAGETABLE support with COW/VPTE fix (2))

- chrome freezes (firefox works)
- shutdown blocks
- after a hard-reset, it hangs in "Mounting tmpfs at /var/run/shm"

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 #2

Updated by mneumann 10 days ago

Disabling

Option AccelMethod" "glamor"

seems to work.

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 #3

Updated by mneumann 6 days ago

Ok, it's not related to i915 at all or chrome. I get timeouts even without starting X11.

Everything works normally again when I revert commit "8ec33efba7563efab10f0d90b5684480d94daf0a" (vkernel: Restore MAP_VPAGETABLE support with COW/VPTE fix (2)), so something in this commit must break my system.

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