Driver-Core: disable /sbin/hotplug by default

No recent mainstream system uses the /sbin/hotplug fork-bomb any more.
Disable it by default to reflect how it is used these days.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig
index 8021e19fa1ea..fd52c48ee762 100644
--- a/drivers/base/Kconfig
+++ b/drivers/base/Kconfig
@@ -3,10 +3,18 @@ menu "Generic Driver Options"
 config UEVENT_HELPER_PATH
         string "path to uevent helper"
         depends on HOTPLUG
-        default "/sbin/hotplug"
+        default ""
         help
           Path to uevent helper program forked by the kernel for
           every uevent.
+          Before the switch to the netlink-based uevent source, this was
+          used to hook hotplug scripts into kernel device events. It
+          usually pointed to a shell script at /sbin/hotplug.
+          This should not be used today, because usual systems create
+          many events at bootup or device discovery in a very short time
+          frame. One forked process per event can create so many processes
+          that it creates a high system load, or on smaller systems
+          it is known to create out-of-memory situations during bootup.
 
 config DEVTMPFS
         bool "Maintain a devtmpfs filesystem to mount at /dev"