Re: KASAN: use-after-free Read in netdev_name_node_lookup_rcu

2020-06-29 Thread Cong Wang
#syz fix: genetlink: get rid of family->attrbuf

Re: KASAN: use-after-free Read in netdev_name_node_lookup_rcu

2020-06-29 Thread Cong Wang
On Mon, Jun 29, 2020 at 6:17 PM Jason A. Donenfeld wrote: > > Hey Cong, Hi, Jason > > I'm wondering if the below error is related to what you've been > looking at yesterday. AFAICT, there's a simple UaF on the attrbuf > passed to the start method. I recall recently you were working on the > lock

Re: KASAN: use-after-free Read in netdev_name_node_lookup_rcu

2020-06-29 Thread Jason A. Donenfeld
Hey Cong, I'm wondering if the below error is related to what you've been looking at yesterday. AFAICT, there's a simple UaF on the attrbuf passed to the start method. I recall recently you were working on the locking in genetlink's family buffers and wound up mallocing some things, so it seems li

KASAN: use-after-free Read in netdev_name_node_lookup_rcu

2020-06-29 Thread syzbot
Hello, syzbot found the following crash on: HEAD commit:1590a2e1 Merge tag 'acpi-5.8-rc3' of git://git.kernel.org/.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1664afad10 kernel config: https://syzkaller.appspot.com/x/.config?x=bf3aec367b9ab569 das