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

From: Jakub Kicinski
Date: Mon Aug 19 2019 - 17:22:29 EST


On Fri, 06 Jul 2018 00:36:02 -0700, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 1a84d7fdb5fc Merge branch 'mlxsw-Add-resource-scale-tests'
> git tree: net-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=17dec75c400000
> kernel config: https://syzkaller.appspot.com/x/.config?x=a63be0c83e84d370
> dashboard link: https://syzkaller.appspot.com/bug?extid=2134b6b74dec9f8c760f
> compiler: gcc (GCC) 8.0.1 20180413 (experimental)
>
> Unfortunately, I don't have any reproducer for this crash yet.
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+2134b6b74dec9f8c760f@xxxxxxxxxxxxxxxxxxxxxxxxx

#syz dup: general protection fault in tls_write_space