From: Tomas Henzl <thenzl@redhat.com>
Date: Thu, 1 Aug 2013 13:14:00 +0000 (+0200)
Subject: hpsa: fix a race in cmd_free/scsi_done
X-Git-Tag: v3.2.65~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e87cf8149d14c01a665e65029ad76530b228e901;p=pandora-kernel.git

hpsa: fix a race in cmd_free/scsi_done

commit 2cc5bfaf854463d9d1aa52091f60110fbf102a96 upstream.

When the driver calls scsi_done and after that frees it's internal
preallocated memory it can happen that a new job is enqueud before
the memory is freed. The allocation fails and the message
"cmd_alloc returned NULL" is shown.
Patch below fixes it by moving cmd->scsi_done after cmd_free.

Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: Masoud Sharbiani <msharbiani@twopensource.com>
---

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