From: Mike Christie <michaelc@cs.wisc.edu>
Date: Fri, 24 Jun 2011 20:11:54 +0000 (-0500)
Subject: [SCSI] iscsi_tcp: fix locking around iscsi sk user data
X-Git-Tag: v3.1-rc1~270^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03adb5f91280b433c3685d0ee86b2e1424af3d88;p=pandora-kernel.git

[SCSI] iscsi_tcp: fix locking around iscsi sk user data

iscsi_sw_tcp_conn_restore_callbacks could have set
the sk_user_data field to NULL then iscsi_sw_tcp_data_ready
could read that and try to access the NULL pointer. This
adds some checks for NULL sk_user_data in the sk
callback functions and it uses the sk_callback_lock to
set/get that sk_user_data field.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

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