From: Oleg Nesterov <oleg@redhat.com>
Date: Fri, 8 Aug 2014 21:19:17 +0000 (-0700)
Subject: vm_is_stack: use for_each_thread() rather then buggy while_each_thread()
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~116^2~191
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4449a51a7c281602d3a385044ab928322a122a02;p=pandora-kernel.git

vm_is_stack: use for_each_thread() rather then buggy while_each_thread()

Aleksei hit the soft lockup during reading /proc/PID/smaps.  David
investigated the problem and suggested the right fix.

while_each_thread() is racy and should die, this patch updates
vm_is_stack().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reported-by: Aleksei Besogonov <alex.besogonov@gmail.com>
Tested-by: Aleksei Besogonov <alex.besogonov@gmail.com>
Suggested-by: David Rientjes <rientjes@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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