Commit 3b5c760e authored May 16, 2009 by Vegard Nossum

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 <viro@zeniv.linux.org.uk>
Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>

parent 3446a8aa

init/do_mounts.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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];