From: Dave Watson <davejwat...@fb.com> Date: Mon, 26 Jun 2017 08:36:47 -0700
> If icsk_ulp_ops is unset, it dereferences a null ptr. > Add a null ptr check. > > BUG: KASAN: null-ptr-deref in copy_to_user include/linux/uaccess.h:168 > [inline] > BUG: KASAN: null-ptr-deref in do_tcp_getsockopt.isra.33+0x24f/0x1e30 > net/ipv4/tcp.c:3057 > Read of size 4 at addr 0000000000000020 by task syz-executor1/15452 > > Signed-off-by: Dave Watson <davejwat...@fb.com> > Reported-by: "Levin, Alexander (Sasha Levin)" <alexander.le...@verizon.com> Applied, thanks.
