This is a note to let you know that I've just added the patch titled
iscsi-target: Fix ERL=2 ASYNC_EVENT connection pointer bug
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iscsi-target-fix-erl-2-async_event-connection-pointer-bug.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d444edc679e7713412f243b792b1f964e5cff1e1 Mon Sep 17 00:00:00 2001
From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Date: Wed, 19 Feb 2014 23:32:14 +0000
Subject: iscsi-target: Fix ERL=2 ASYNC_EVENT connection pointer bug
From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
commit d444edc679e7713412f243b792b1f964e5cff1e1 upstream.
This patch fixes a long-standing bug in iscsit_build_conn_drop_async_message()
where during ERL=2 connection recovery, a bogus conn_p pointer could
end up being used to send the ISCSI_OP_ASYNC_EVENT + DROPPING_CONNECTION
notifying the initiator that cmd->logout_cid has failed.
The bug was manifesting itself as an OOPs in iscsit_allocate_cmd() with
a bogus conn_p pointer in iscsit_build_conn_drop_async_message().
Reported-by: Arshad Hussain <arshad.hussain@xxxxxxxxxxxxxx>
Reported-by: santosh kulkarni <santosh.kulkarni@xxxxxxxxxxxxxx>
Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/target/iscsi/iscsi_target.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -2352,6 +2352,7 @@ static void iscsit_build_conn_drop_async
{
struct iscsi_cmd *cmd;
struct iscsi_conn *conn_p;
+ bool found = false;
/*
* Only send a Asynchronous Message on connections whos network
@@ -2360,11 +2361,12 @@ static void iscsit_build_conn_drop_async
list_for_each_entry(conn_p, &conn->sess->sess_conn_list, conn_list) {
if (conn_p->conn_state == TARG_CONN_STATE_LOGGED_IN) {
iscsit_inc_conn_usage_count(conn_p);
+ found = true;
break;
}
}
- if (!conn_p)
+ if (!found)
return;
cmd = iscsit_allocate_cmd(conn_p, GFP_ATOMIC);
Patches currently in stable-queue which might be from nab@xxxxxxxxxxxxxxx are
queue-3.4/iscsi-target-fix-erl-2-async_event-connection-pointer-bug.patch
queue-3.4/ib_srpt-use-correct-ib_sg_dma-primitives.patch
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