From: Ethan Solomita <solo@google.com>
Date: Mon, 16 Jul 2007 06:38:16 +0000 (-0700)
Subject: oom: stop allocating user memory if TIF_MEMDIE is set
X-Git-Tag: v2.6.23-rc1~1023
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=462e00cc7151ed91fba688594436c453c80efb5d;p=pandora-kernel.git

oom: stop allocating user memory if TIF_MEMDIE is set

get_user_pages() can try to allocate a nearly unlimited amount of memory on
behalf of a user process, even if that process has been OOM killed.  The
OOM kill occurs upon return to user space via a SIGKILL, but
get_user_pages() will try allocate all its memory before returning.  Change
get_user_pages() to check for TIF_MEMDIE, and if set then return
immediately.

Signed-off-by: Ethan Solomita <solo@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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