Re: KASAN: slab-out-of-bounds Read in skb_ensure_writable
From: Daniel Borkmann <daniel@iogearbox.net>
Date: 2018-06-08 09:54:29
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On 06/04/2018 01:36 AM, syzbot wrote:
Hello, syzbot found the following crash on: HEAD commit: 0512e0134582 Merge tag 'xfs-4.17-fixes-3' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14956af7800000 kernel config: https://syzkaller.appspot.com/x/.config?x=968b0b23c7854c0b dashboard link: https://syzkaller.appspot.com/bug?extid=e5190cb881d8660fb1a3 compiler: gcc (GCC) 8.0.1 20180413 (experimental) syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=123d9d7b800000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=100329d7800000
#syz fix: bpf: reject passing modified ctx to helper functions