Files
linux-stable-mirror/include/linux
Konstantin Khlebnikov 12352d3cae mm: replace vma_lock_anon_vma with anon_vma_lock_read/write
Sequence vma_lock_anon_vma() - vma_unlock_anon_vma() isn't safe if
anon_vma appeared between lock and unlock.  We have to check anon_vma
first or call anon_vma_prepare() to be sure that it's here.  There are
only few users of these legacy helpers.  Let's get rid of them.

This patch fixes anon_vma lock imbalance in validate_mm().  Write lock
isn't required here, read lock is enough.

And reorders expand_downwards/expand_upwards: security_mmap_addr() and
wrapping-around check don't have to be under anon vma lock.

Link: https://lkml.kernel.org/r/CACT4Y+Y908EjM2z=706dv4rV6dWtxTLK9nFg9_7DhRMLppBo2g@mail.gmail.com
Signed-off-by: Konstantin Khlebnikov <koct9i@gmail.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-02-05 18:10:40 -08:00
..
2016-01-21 19:36:08 +01:00
2016-01-30 13:35:32 -08:00
2016-01-15 17:56:32 -08:00
2016-01-20 17:09:18 -08:00
2016-01-15 17:56:32 -08:00
2016-01-15 17:56:32 -08:00
2016-01-15 17:56:32 -08:00
2016-02-03 08:28:43 -08:00
2016-02-03 08:28:43 -08:00
2016-01-22 17:02:18 -08:00
2016-01-31 09:10:19 -08:00
2016-01-15 17:56:32 -08:00
2016-01-15 22:34:39 +01:00
2016-01-12 20:47:02 +02:00
2016-01-15 17:56:32 -08:00
2016-01-14 16:00:49 -08:00