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dlm: check the write size from user
authorDavid Teigland <teigland@redhat.com>
Mon, 4 Feb 2013 21:31:22 +0000 (15:31 -0600)
committerDavid Teigland <teigland@redhat.com>
Mon, 4 Feb 2013 21:31:22 +0000 (15:31 -0600)
Return EINVAL from write if the size is larger than
allowed.  Do this before allocating kernel memory for
the bogus size, which could lead to OOM.

Reported-by: Sasha Levin <levinsasha928@gmail.com>
Tested-by: Jana Saout <jana@saout.de>
Signed-off-by: David Teigland <teigland@redhat.com>

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