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Date:      Sat, 09 Dec 2023 22:09:46 +0000
From:      bugzilla-noreply@freebsd.org
To:        wireless@FreeBSD.org
Subject:   [Bug 275616] bwn driver causes kernel panic after connect
Message-ID:  <bug-275616-21060-387uwp95I3@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-275616-21060@https.bugs.freebsd.org/bugzilla/>
References:  <bug-275616-21060@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D275616

--- Comment #12 from Frank Hilgendorf <frank.hilgendorf@posteo.de> ---
I repeated the test 5 times. The 5 reports first entry was always
'ieee80211_encap+0x512'. The bug seems to work deterministic.

If it was kind of a race condition, where thread B frees the mbuf currently
processed by thread A, I would expect multiple KASAN reports to start with
different code lines because they should not be so exactly synchronized that
thread B would always hit exactly the same point of execution of thread A.

One more observation:
Running the test with an unencrypted WLAN connection produces no KASAN repo=
rt
at all.

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