Skip site navigation (1)Skip section navigation (2)
Date:      Sat, 24 Jun 2017 09:22:53 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-bugs@FreeBSD.org
Subject:   [Bug 220217] deadlock on enc and pf
Message-ID:  <bug-220217-8-yMQwibPtHj@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-220217-8@https.bugs.freebsd.org/bugzilla/>
References:  <bug-220217-8@https.bugs.freebsd.org/bugzilla/>

next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D220217

--- Comment #3 from Kristof Provost <kp@freebsd.org> ---
(In reply to vegeta from comment #2)
There is no other thread. We assert that 'rw_wowner(rw) !=3D curthread', so=
 the
thread holding the lock must not be the current thread (trying to acquire t=
he
lock).

That assertion fails, so we are the thread holding the lock, yet we try to =
lock
again.

That seems to be in tcp_timer_rexmt(). It holds a write lock on the struct
inpcb, so when pf goes to look up the inpcb and tries to get a read lock we=
 run
into this assertion failure. (tcp_output() in fact asserts that the inpcb m=
ust
be write locked when it's called.)

I'm not quite sure how to fix this though. In fact, right now I don't
understand how this ever works.

--=20
You are receiving this mail because:
You are the assignee for the bug.=



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-220217-8-yMQwibPtHj>