From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Luis Claudio R. Goncalves" <lclaudio@uudg.org>
Subject: Re: Lockdep splat + hardlock on 4.1.10-rt9
Date: Sun, 18 Oct 2015 23:48:03 -0200
Message-ID: <20151019014803.GN4265@uudg.org>
References: <20151016225231.GL4265@uudg.org>
 <alpine.DEB.2.11.1510171148560.4212@nanos>
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To: Thomas Gleixner <tglx@linutronix.de>
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On Sat, Oct 17, 2015 at 12:00:28PM +0200, Thomas Gleixner wrote:
| On Fri, 16 Oct 2015, Luis Claudio R. Goncalves wrote:
| > [  688.417603]  [<ffffffff81115672>] del_timer_sync+0x52/0x190
| > [  688.417604]  [<ffffffff81115625>] ? del_timer_sync+0x5/0x190
| > [  688.417606]  [<ffffffff8182c7f5>] ? _raw_spin_unlock+0x35/0x70
| > [  688.417610]  [<ffffffff8182a828>] ? rt_spin_lock_slowunlock+0x68/0x70
| > [  688.417613]  [<ffffffff8173aa8e>] inet_csk_reqsk_queue_drop+0xbe/0x210
| > [  688.417614]  [<ffffffff8173acc7>] reqsk_timer_handler+0xe7/0x2d0
| > [  688.417616]  [<ffffffff8173abe0>] ? inet_csk_reqsk_queue_drop+0x210/0x210
| > [  688.417618]  [<ffffffff81115962>] call_timer_fn+0xe2/0x570
| 
| That's an upstream bug. Fixed with
| 
| 83fccfc3940c inet: fix potential deadlock in reqsk_queue_unlink()

Thanks! I somehow missed this commit while looking for fixes.

Luis