From: Sage Weil <sage@newdream.net>
Date: Tue, 29 Mar 2011 19:11:06 +0000 (-0700)
Subject: libceph: fix null dereference when unregistering linger requests
X-Git-Tag: v2.6.39-rc2~36^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fbdb9190482fd83a3eb20cdeb0da454759f479d7;p=pandora-kernel.git

libceph: fix null dereference when unregistering linger requests

We should only clear r_osd if we are neither registered as a linger or a
regular request.  We may unregister as a linger while still registered as
a regular request (e.g., in reset_osd).  Incorrectly clearing r_osd there
leads to a null pointer dereference in __send_request.

Also simplify the parallel check in __unregister_request() where we just
removed r_osd_item and know it's empty.

Signed-off-by: Sage Weil <sage@newdream.net>
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