linux-kernel - [PATCH v2 0/6] locks: better debugging and fix for setlk/close race handling

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Date:	Fri,  8 Jan 2016 08:50:08 -0500
From:	Jeff Layton <jlayton@...chiereds.net>
To:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Dmitry Vyukov <dvyukov@...gle.com>,
	"J. Bruce Fields" <bfields@...ldses.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	syzkaller <syzkaller@...glegroups.com>,
	Kostya Serebryany <kcc@...gle.com>,
	Alexander Potapenko <glider@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Eric Dumazet <edumazet@...gle.com>
Subject: [PATCH v2 0/6] locks: better debugging and fix for setlk/close race handling

The first patch in this patchset fixes a very long-standing bug in the
handling of races between setlk and close. That one should be appropriate
for all stable kernels and should apply to most kernels as-is.

The second patch exempts OFD locks from setlk/close race handling since
they shouldn't need it anyway. The rest of the patches add some better
debugging for these problems and do a little function name cleanup.

I'm planning to go ahead and put these into linux-next today and send
them to Linus for the 4.5 merge, unless there are any objections...

Jeff Layton (6):
  locks: fix unlock when fcntl_setlk races with a close
  locks: don't check for race with close when setting OFD lock
  locks: sprinkle some tracepoints around the file locking code
  locks: pass inode pointer to locks_free_lock_context
  locks: prink more detail when there are leaked locks
  locks: rename __posix_lock_file to posix_lock_inode

 fs/inode.c                      |   2 +-
 fs/locks.c                      | 123 +++++++++++++++++++++++++++-------------
 include/linux/fs.h              |   4 +-
 include/trace/events/filelock.h |  77 +++++++++++++++++++++++++
 4 files changed, 165 insertions(+), 41 deletions(-)

-- 
2.5.0