[Bug 268565] panic after "killall wpa_supplicant" followed by "/etc/rc.d/netif start" with rtw880

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 268565] [patch] panic after "killall wpa_supplicant" followed by "/etc/rc.d/netif start" with rtw880"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 10 Jan 2023 09:31:18 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268565

Mikhail Pchelin <misha@freebsd.org> changed:

           What    |Removed                     |Added
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 Attachment #239027|0                           |1
        is obsolete|                            |

--- Comment #5 from Mikhail Pchelin <misha@freebsd.org> ---
Created attachment 239374
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=239374&action=edit
patch v3

Next attempt to fix the panic.

Thinking about it more, I must agree that fixing lsta in xmit function is
wrong.

Panic occurs while transiting from INIT state to SCAN, currently this
transition is not handled in a special way, the handler is
lkpi_sta_state_do_nada(), which is a stub. I suggest to check for lsta
existence in the new handler and allocating it, if it's not set.

INIT->SCAN also happens on boot, but in that case we also create a VAP, so lsta
allocation is handled in that chain, so there is no crash.

Opinions?

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