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authorDavidlohr Bueso <davidlohr@hp.com>2014-04-20 04:26:28 +0200
committerRalf Baechle <ralf@linux-mips.org>2014-06-03 22:19:09 +0200
commitf7a89f1b8eb598ac5da61c9795b3d847baa73d12 (patch)
tree242a43f894239e17951e5791d1cab5a8ecc99963 /arch/mips/mti-malta
parentMIPS: Fix 'write_msa_##' inline macro. (diff)
downloadlinux-f7a89f1b8eb598ac5da61c9795b3d847baa73d12.tar.xz
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MIPS: Call find_vma with the mmap_sem held
Performing vma lookups without taking the mm->mmap_sem is asking for trouble. While doing the search, the vma in question can be modified or even removed before returning to the caller. Take the lock (exclusively) in order to avoid races while iterating through the vmacache and/or rbtree. Updates two functions: - process_fpemu_return() - cteon_flush_cache_sigtramp() Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Tested-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com> Cc: linux-mips@linux-mips.org Cc: akpm@linux-foundation.org Cc: zeus@gnu.org Cc: aswin@hp.com Cc: davidlohr@hp.com Cc: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org Patchwork: http://patchwork.linux-mips.org/patch/6811/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mti-malta')
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