From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Mon, 23 Feb 2015 08:57:51 +0000 (-0800)
Subject: iscsi-target: Avoid early conn_logout_comp for iser connections
X-Git-Tag: omap-for-v4.2/o2_dc~281^2~7
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f068fbc82e7696d67b1bb8189306865bedf368b6;p=pandora-kernel.git

iscsi-target: Avoid early conn_logout_comp for iser connections

This patch fixes a iser specific logout bug where early complete()
of conn->conn_logout_comp in iscsit_close_connection() was causing
isert_wait4logout() to complete too soon, triggering a use after
free NULL pointer dereference of iscsi_conn memory.

The complete() was originally added for traditional iscsi-target
when a ISCSI_LOGOUT_OP failed in iscsi_target_rx_opcode(), but given
iser-target does not wait in logout failure, this special case needs
to be avoided.

Reported-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Slava Shwartsman <valyushash@gmail.com>
Cc: <stable@vger.kernel.org> # v3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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