usbutils 0.91: Fix NULL pointer crash.

[YOCTO #2847]

Before use usbbuslist, we should check if it is valid.

(From OE-Core rev: fc6c6ce73105518f4106da469ed81d53d860a290)

Signed-off-by: Roy.Li <rongqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 28 insertions, 0 deletions

diff --git a/meta/recipes-bsp/usbutils/usbutils/Fix-NULL-pointer-crash.patch b/meta/recipes-bsp/usbutils/usbutils/Fix-NULL-pointer-crash.patch
new file mode 100644
index 0000000000..0efdc59fc6
--- /dev/null
+++ b/meta/recipes-bsp/usbutils/usbutils/Fix-NULL-pointer-crash.patch
@@ -0,0 +1,28 @@
+Fix NULL pointer crash.
+
+Before use usbbuslist, we should check if it is valid.
+
+Upstream-Status: Pending
+Signed-off-by: Roy.Li <rongqing.li@windriver.com>
+---
+ lsusb-t.c |    4 ++++
+ 1 files changed, 4 insertions(+), 0 deletions(-)
+
+diff --git a/lsusb-t.c b/lsusb-t.c
+index f604155..583a46a 100644
+--- a/lsusb-t.c
++++ b/lsusb-t.c
+@@ -643,6 +643,10 @@ static void sort_busses(void)
+        /* need to reverse sort bus numbers */
+        struct usbbusnode *t, *p, **pp;
+        int swapped;
++
++       if (!usbbuslist)
++               return;
++
+        do {
+                p = usbbuslist;
+                pp = &usbbuslist;
+-- 
+1.7.4.1
+