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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: julia@ni.com
Cc: linux-rt-users@vger.kernel.org, Steven Rostedt <rostedt@goodmis.org>
Subject: [v4.9 RT 0/6] futex backports
Date: Wed,  6 Jun 2018 15:31:25 +0200	[thread overview]
Message-ID: <20180606133131.7747-1-bigeasy@linutronix.de> (raw)

Hi Julia,

as mentioned in the stable meeting, here is the futex patch that was
missing in the v4.9 tree :)
The futex state in v4.9 was backported from a later kernel at the time
Peter made the patches. That is why all the fixes which were tagged
stable did not enter the v4.9 stable tree.
I had a "deadlock assert in glibc" from pthread_mutex_lock() which did
not make a lot of sense. After comparing the futex code in latest v4.9
and v4.14 I identified a few patches which should be backported.
I haven't seen the issue after applying the patches which follow as a
reply to this email. They apply on top of v4.9.98-rt76.

Sebastian



             reply	other threads:[~2018-06-06 13:31 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-06 13:31 Sebastian Andrzej Siewior [this message]
2018-06-06 13:31 ` [PATCH 1/6] futex: Fix pi_state->owner serialization Sebastian Andrzej Siewior
2018-06-06 13:31 ` [PATCH 2/6] futex: Fix more put_pi_state() vs. exit_pi_state_list() races Sebastian Andrzej Siewior
2018-06-06 13:31 ` [PATCH 3/6] futex: Avoid violating the 10th rule of futex Sebastian Andrzej Siewior
2018-06-06 13:31 ` [PATCH 4/6] futex: Fix OWNER_DEAD fixup Sebastian Andrzej Siewior
2018-06-06 13:31 ` [PATCH 5/6] rtmutex: Make rt_mutex_futex_unlock() safe for irq-off callsites Sebastian Andrzej Siewior
2018-06-06 13:31 ` [PATCH 6/6] rcu: Suppress lockdep false-positive ->boost_mtx complaints Sebastian Andrzej Siewior
2018-06-06 18:23 ` [v4.9 RT 0/6] futex backports Steven Rostedt
2018-06-12 17:53 ` Julia Cartwright
2018-06-15 16:11   ` Sebastian Andrzej Siewior
2018-07-09  9:58 ` [PATCH RT 7/6] rcu: Do not include rtmutex_common.h unconditionally Sebastian Andrzej Siewior
2018-07-10 16:53 ` [PATCH RT 8/6] sched, tracing: Fix trace_sched_pi_setprio() for deboosting Sebastian Andrzej Siewior

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