From: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp
commit ea303f72d70ce2f0b0aa94ab127085289768c5a6 upstream.
syzbot is reporting too large allocation at ntfs_load_attr_list(), for a crafted filesystem can have huge data_size.
Reported-by: syzbot syzbot+89dbb3a789a5b9711793@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?extid=89dbb3a789a5b9711793 Signed-off-by: Tetsuo Handa penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- fs/ntfs3/attrlist.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/fs/ntfs3/attrlist.c +++ b/fs/ntfs3/attrlist.c @@ -52,7 +52,7 @@ int ntfs_load_attr_list(struct ntfs_inod
if (!attr->non_res) { lsize = le32_to_cpu(attr->res.data_size); - le = kmalloc(al_aligned(lsize), GFP_NOFS); + le = kmalloc(al_aligned(lsize), GFP_NOFS | __GFP_NOWARN); if (!le) { err = -ENOMEM; goto out; @@ -80,7 +80,7 @@ int ntfs_load_attr_list(struct ntfs_inod if (err < 0) goto out;
- le = kmalloc(al_aligned(lsize), GFP_NOFS); + le = kmalloc(al_aligned(lsize), GFP_NOFS | __GFP_NOWARN); if (!le) { err = -ENOMEM; goto out;