From: Roland Dreier <roland@purestorage.com>
Date: Tue, 8 Oct 2013 16:47:22 +0000 (-0700)
Subject: target: Fix assignment of LUN in tracepoints
X-Git-Tag: v3.12-rc7~5^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2053a1db41193c2b5e1f47a91aaba0fd63ba7102;p=pandora-kernel.git

target: Fix assignment of LUN in tracepoints

The unpacked_lun field in the SCSI target tracepoints should be
initialized with cmd->orig_fe_lun rather than cmd->se_lun->unpacked_lun
for two reasons:

 - most importantly, if we are in the cmd_complete tracepoint
   returning a check condition due to no LUN found, cmd->se_lun will
   be NULL and we'll crash trying to dereference it.

 - also, in any case, cmd->se_lun->unpacked_lun is an internal index
   into the target's internal set of LUNs; cmd->orig_fe_lun is much
   more useful and interesting, since it's the value the initiator
   actually sent.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: <stable@vger.kernel.org> # 3.11+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
---

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