[Bug 263707] iwlwifi crashed and would not recover after network fail-over

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 01 May 2022 19:26:49 UTC

            Bug ID: 263707
           Summary: iwlwifi crashed and would not recover after network
           Product: Base System
           Version: 13.1-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: wireless
          Assignee: wireless@FreeBSD.org
          Reporter: rkoberman@gmail.com
 Attachment #233635 text/plain
         mime type:

Created attachment 233635
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=233635&action=edit
Log of events from failure to reboot

After a router restart caused my network to fail over to my backup connection,
a "service netif restart wlan0" triggered a driver crash that required a system
reboot to recover. I did not attempt to unload and load the driver as that has
often paniced the system and I did not to delay recovery.

Network device: Intel AX200
System: Lenovo L-15 (Gen. 1)
OS:FreeBSD 13.1-STABLE #0 stable/13-n250504-f66bb161ab7

I am attaching log messages of the failure.

After a reboot of the system, everything returned to normal.

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