linux-kernel - Re: KASAN: use-after-free Read in ntfs_read_locked

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Date:   Wed, 26 Aug 2020 03:37:06 -0700
From:   syzbot <syzbot+19b469021157c136116a@...kaller.appspotmail.com>
To:     anton@...era.com, daniel@...earbox.net, deller@....de,
        dvyukov@...gle.com, jejb@...isc-linux.org, keescook@...omium.org,
        linux-kernel@...r.kernel.org, linux-ntfs-dev@...ts.sourceforge.net,
        linux-parisc@...r.kernel.org, luto@...capital.net, sdf@...gle.com,
        songliubraving@...com, syzkaller-bugs@...glegroups.com,
        viro@...iv.linux.org.uk, wad@...omium.org
Subject: Re: KASAN: use-after-free Read in ntfs_read_locked_inode

syzbot suspects this issue was fixed by commit:

commit f7c6cb1d9728dea9d9f131ef57303d6821afb0f8
Author: Stanislav Fomichev <sdf@...gle.com>
Date:   Wed Jul 29 00:31:03 2020 +0000

    bpf: Expose socket storage to BPF_PROG_TYPE_CGROUP_SOCK

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16480fa9900000
start commit:   3e968c9f Merge tag 'ext4_for_linus' of git://git.kernel.or..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=7e8c053ac965e0dd
dashboard link: https://syzkaller.appspot.com/bug?extid=19b469021157c136116a
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=142d219b800000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=143029db800000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: bpf: Expose socket storage to BPF_PROG_TYPE_CGROUP_SOCK

For information about bisection process see: https://goo.gl/tpsmEJ#bisection