From 59bfd7a483da36bd202532a3d9ea1f14f3bf3aaf Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Sun, 2 Oct 2022 23:54:11 +0900 Subject: fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_fill_super() syzbot is reporting too large allocation at ntfs_fill_super() [1], for a crafted filesystem can contain bogus inode->i_size. Add __GFP_NOWARN in order to avoid too large allocation warning, than exhausting memory by using kvmalloc(). Link: https://syzkaller.appspot.com/bug?extid=33f3faaa0c08744f7d40 [1] Reported-by: syzot Signed-off-by: Tetsuo Handa Signed-off-by: Konstantin Komarov --- fs/ntfs3/super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/ntfs3/super.c') diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c index 1e2c04e48f98..2fd1367a5982 100644 --- a/fs/ntfs3/super.c +++ b/fs/ntfs3/super.c @@ -1167,7 +1167,7 @@ static int ntfs_fill_super(struct super_block *sb, struct fs_context *fc) goto put_inode_out; } bytes = inode->i_size; - sbi->def_table = t = kmalloc(bytes, GFP_NOFS); + sbi->def_table = t = kmalloc(bytes, GFP_NOFS | __GFP_NOWARN); if (!t) { err = -ENOMEM; goto put_inode_out; -- cgit v1.2.3-59-g8ed1b