uprobes: Don't put NULL pointer in uprobe_register()

alloc_uprobe() might return a NULL pointer, put_uprobe() can't deal with this. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
git-mirror · Sep 15, 2012 · 6d1d8df · 6d1d8df
1 parent ded86e7
commit 6d1d8df
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
@@ -897,7 +897,8 @@ int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *
 	}
 
 	mutex_unlock(uprobes_hash(inode));
-	put_uprobe(uprobe);
+	if (uprobe)
+		put_uprobe(uprobe);
 
 	return ret;
 }