tracing: Have preempt(irqs)off trace preempt disabled functions

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / kernel / kmod.c

diff --git a/kernel/kmod.c b/kernel/kmod.c
index 1296e72e4161be305e37606f6024db1a84ff73a3..8241906c4b61a0887304f6524516563707d1a876 100644 (file)
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -569,6 +569,11 @@ int call_usermodehelper_exec(struct subprocess_info *sub_info, int wait)
        int retval = 0;
 
        helper_lock();
+       if (!sub_info->path) {
+               retval = -EINVAL;
+               goto out;
+       }
+
        if (sub_info->path[0] == '\0')
                goto out;