[lkml]   [2017]   [Jun]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 4.11 020/115] net/smc: Add warning about remote memory exposure
4.11-stable review patch.  If anyone has any objections, please let me know.


From: Christoph Hellwig <>

[ Upstream commit 19a0f7e37c0761a0a1cbf550705a6063c9675223 ]

The driver explicitly bypasses APIs to register all memory once a
connection is made, and thus allows remote access to memory.

Signed-off-by: Christoph Hellwig <>
Signed-off-by: Leon Romanovsky <>
Acked-by: Ursula Braun <>
Signed-off-by: David S. Miller <>
Signed-off-by: Greg Kroah-Hartman <>
net/smc/Kconfig | 4 ++++
1 file changed, 4 insertions(+)

--- a/net/smc/Kconfig
+++ b/net/smc/Kconfig
@@ -8,6 +8,10 @@ config SMC
The Linux implementation of the SMC-R solution is designed as
a separate socket family SMC.

+ Warning: SMC will expose all memory for remote reads and writes
+ once a connection is established. Don't enable this option except
+ for tightly controlled lab environment.
Select this option if you want to run SMC socket applications

config SMC_DIAG

 \ /
  Last update: 2017-06-12 00:24    [W:0.370 / U:7.676 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site