[Bug 286219] iwlwifi(4) kernel panic lkpi_sta_auth_to_scan with Intel Wireless 7260, 8086:08b1:8086:c060

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286219

--- Comment #17 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=53c69fd933dc49f69d5603fb27ce51064ebe681e

commit 53c69fd933dc49f69d5603fb27ce51064ebe681e
Author:     Bjoern A. Zeeb <bz@FreeBSD.org>
AuthorDate: 2026-03-08 12:48:51 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2026-03-08 13:49:52 +0000

    LinuxKPI: 802.11: lkpi_sta_auth_to_scan() fail graciously on lsta == NULL

    Usually after a firmware crash, we see reports of crashes in
    lkpi_sta_auth_to_scan().  One of the last ones was in the PR
    mentioned below.

    These crashes are often attributed as the problem while the real
    problem happened before.

    At this point try avoid the NULL pointer and to fail graciously if
    lvif->iv_bss (lsta) is no longer set.  This way users have a chance
    to possibly recover using netif restart wlan0 rather than dealing
    with a panic.

    See if this helps us to better track down the original problems
    rather than the follow-up crash.

    On a debug kernel the KASSERT should normally have caught that
    condition as well but we see panics on page faults were the log
    line was there but then the lsta->ni deref has happened, which is
    after the KASSERT.  I have not checked if this is a reordering problem
    or if the people reporting had IEEE80211_DEBUG on but not INVARIANTS.

    Sponsored by:   The FreeBSD Foundation
    PR:             286219 #c11
    MFC after:      3 days

 sys/compat/linuxkpi/common/src/linux_80211.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

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