https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265795
Bug ID: 265795
Summary: panic: vm_page_dequeue_deferred: page has unexpected
queue state
Product: Base System
Version: 13.1-STABLE
Hardware: arm64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
While poudriere is cleaning up my server crashes with
vm_page_dequeue_deferred: page 0xffffa09ec0609d40 has unexpected queue state
Stack trace retyped from the console:
vm_page_dequeue_deferred
vm_page_free_prep
vm_page_free_toq
vm_object_page_remove
bufobj_invalbuf
vgonel
vrecycle
zfs_freebsd_inactive
vinactivef
vput_final
kern_funlinkat
I reproduced this and I have two crash dumps but kgdb hits an internal
assertion trying to debug them.
My guess is this is distantly related to bug 261538 in that the
combination of zfs deduplication and cloning creates unusual state in
the kernel.
Some notes:
1. ARM server (Ampere eMAG) running 13.1-STABLE up through eb2a9b78586.
2. Kernel is built with INVARIANTS (this is a KASSERT in vm_page.c).
3. I have a patch to ZFS to disable another assertion to fix bug 261538.
4. All of poudriere's temporary filesystems have been destroyed by the
time of the crash.
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