fs: fix do_mount_root() false positive kmemcheck warning

This false positive is due to the fact that do_mount_root() fakes a mount option (which is normally read from userspace), and the kernel unconditionally reads a whole page for the mount option. Hide the false positive by using the new __getname_gfp() with the __GFP_NOTRACK_FALSE_POSITIVE flag. Cc: Al Viro <[email protected]> Signed-off-by: Vegard Nossum <[email protected]>
CoreTex · Jun 15, 2009 · 3b5c760 · 3b5c760
1 parent 3446a8a
commit 3b5c760
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/init/do_mounts.c b/init/do_mounts.c
@@ -231,7 +231,8 @@ static int __init do_mount_root(char *name, char *fs, int flags, void *data)
 
 void __init mount_block_root(char *name, int flags)
 {
-	char *fs_names = __getname();
+	char *fs_names = __getname_gfp(GFP_KERNEL
+		| __GFP_NOTRACK_FALSE_POSITIVE);
 	char *p;
 #ifdef CONFIG_BLOCK
 	char b[BDEVNAME_SIZE];