Unverified Commit ea303f72 authored Mar 28, 2023 by Tetsuo Handa Committed by Konstantin Komarov Jul 03, 2023

fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_load_attr_list()

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>

parent 97498cd6

fs/ntfs3/attrlist.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -52,7 +52,7 @@ int ntfs_load_attr_list(struct ntfs_inode ni, struct ATTRIB attr)

		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_inode ni, struct ATTRIB attr)
		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;