linux-kernel - [PATCH tip/core/rcu 0/4] rcu: suppress RCU lockdep early-boot warnings and fixes

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 3 Mar 2010 07:46:38 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...e.hu, laijs@...fujitsu.com, dipankar@...ibm.com,
	akpm@...ux-foundation.org, mathieu.desnoyers@...ymtl.ca,
	josh@...htriplett.org, dvhltc@...ibm.com, niv@...ibm.com,
	tglx@...utronix.de, peterz@...radead.org, rostedt@...dmis.org,
	Valdis.Kletnieks@...edu, dhowells@...hat.com
Subject: [PATCH tip/core/rcu 0/4] rcu: suppress RCU lockdep early-boot
	warnings and fixes

Hello!

This patch series suppresses early-boot RCU-lockdep warnings and fixes
a couple of other RCU lockdep issues:

1.	Use a wrapper function to query lockdep about tasklist_lock
	instead of (re-)exporting tasklist_lock to modules.

2.	Suppress early-boot RCU-lockdep warnings.

3.	Revert an earlier lockdep-RCU patch that manually checked for
	early boot.

4.	Add a couple of variables to the lockdep_rcu_dereference()
	output.

Testing identified a couple of lockdep splats that I thought were due
to early boot issues, but which turned out to be not -quite- that early.
These will be dealt with by a pair of later patches.

							Thanx, Paul

 include/linux/cgroup.h   |    2 --
 include/linux/cred.h     |    2 +-
 include/linux/rcupdate.h |   35 ++++++++++++++++++++++++++---------
 include/linux/sched.h    |    4 ++++
 kernel/exit.c            |    2 +-
 kernel/fork.c            |    9 ++++++++-
 kernel/lockdep.c         |    2 +-
 kernel/pid.c             |    5 +++--
 lib/locking-selftest.c   |    6 +++++-
 9 files changed, 49 insertions(+), 18 deletions(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/