block: Check strdup() fail case

Check whether strdup() is called successfully or not to
avoid NULL pointer into strlen().

This bug is reported by SVACE with id = 695575.

Change-Id: I9fdb6ab681085c13fccebe51fd72c72e25bc859e
Signed-off-by: Unsung Lee <unsung.lee@samsung.com>

diff --git a/src/block/block.c b/src/block/block.c
index e70f4624bfb9a025b0cc2e28ebb3c129be092a85..7aa6ee56253c2178491a246f0509f2254819232c 100644 (file)
--- a/src/block/block.c
+++ b/src/block/block.c
@@ -1999,6 +1999,9 @@ static int find_thread(char *devnode)
        } else
                th_node = strdup(devnode);
 
+       if (th_node == NULL)
+               return -1;
+
        len = strlen(th_node) + 1;
        min_num = 1000;
        min = -1;