[FIX] check null pointer

in uprobe_exceptions_notify()

Change-Id: Id98d9b20bfc6bbd93dcbe4b254c9c3e52c58a809
Signed-off-by: Vyacheslav Cherkashin <v.cherkashin@samsung.com>

diff --git a/uprobe/arch/asm-x86/swap_uprobes.c b/uprobe/arch/asm-x86/swap_uprobes.c
index 0d09c77..2ec59ac 100644 (file)
--- a/uprobe/arch/asm-x86/swap_uprobes.c
+++ b/uprobe/arch/asm-x86/swap_uprobes.c
@@ -375,7 +375,7 @@ static int uprobe_exceptions_notify(struct notifier_block *self, unsigned long v
        struct die_args *args = (struct die_args *)data;
        int ret = NOTIFY_DONE;
 
-       if (args->regs && !user_mode_vm(args->regs))
+       if (args->regs == NULL || !user_mode_vm(args->regs))
                return ret;
 
        switch (val) {