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Subject[31/46] dm/connector: Only process connector packages from privileged processes
2.6.31-stable review patch.  If anyone has any objections, please let us know.

------------------
From: Philipp Reisner <philipp.reisner@linbit.com>
(cherry picked from commit 93136335f9ad7a98b92eacda1b43dccbf063cd07)

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/md/dm-log-userspace-transfer.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/md/dm-log-userspace-transfer.c
+++ b/drivers/md/dm-log-userspace-transfer.c
@@ -133,6 +133,9 @@ static void cn_ulog_callback(struct cn_m
{
struct dm_ulog_request *tfr = (struct dm_ulog_request *)(msg + 1);

+ if (!cap_raised(nsp->eff_cap, CAP_SYS_ADMIN))
+ return;
+
spin_lock(&receiving_list_lock);
if (msg->len == 0)
fill_pkg(msg, NULL);



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