From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 26 Jan 2008 04:22:26 +0000 (-0500)
Subject: dlm: make find_rsb() fail gracefully when namelen is too large
X-Git-Tag: v2.6.25-rc1~42^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef58bccab7c7ef34451aa4ceea39545ef126b666;p=pandora-kernel.git

dlm: make find_rsb() fail gracefully when namelen is too large

We *can* get there from receive_request() and dlm_recover_master_copy()
with namelen too large if incoming request is invalid; BUG() from
DLM_ASSERT() in allocate_rsb() is a bit excessive reaction to that
and in case of dlm_recover_master_copy() we would actually oops before
that while calculating hash of up to 64Kb worth of data - with data
actually being 64 _bytes_ in kmalloc()'ed struct.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Teigland <teigland@redhat.com>
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