[Bug 274382] iwlwifi Invalid TXQ id

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 14 Feb 2024 14:57:23 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=274382

--- Comment #29 from Cheng Cui <cc@FreeBSD.org> ---
The patches from D43389, D43725, D43753 in combination seem to work and
prevented the crash "panic: lkpi_sta_auth_to_assoc" from "service netif
restart" or simply booting the kernel. The patches does not prevent "please
report to PR 274382" from showing up.

However, I observed this strange difference among my three freebsd VMs.

vm1: Feb 12 main kernel, keeps hitting the crash without the patches
vm2: Feb 12 main kernel, and never hit the crash
vm3: Feb 14 main kernel, and never hit the crash, on a second physical host

The only different between vm1 and vm2 (they are on the same physical host) is
that vm1 was created last November, 2023 with World rebuilt that time; but vm2
was created last week using the Feb 8 freebsd-current ISO image without
rebuilding the World. The vm3 was also created in Feb without rebuilding the
World.

But I can't explain why the old World but new kernel will cause the problem.
And I suspect that is the drm-515-kmod (as rkoberman@gmail.com mentioned) the
culprit?

I remember Ed told me before that the ports tree has drm-kmod, but could
somebody help explain my suspicion, before I rebuild the drm-kmod in vm1 to
verify myself?

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