Re: [syzbot] KASAN: vmalloc-out-of-bounds Write in ringbuf_map_alloc

Daniel Borkmann
2022-02-02T12:20:37Z

On 2/2/22 1:11 PM, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 6abab1b81b65 Add linux-next specific files for 20220202
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=13f4b900700000
> kernel config: https://syzkaller.appspot.com/x/.config?x=b8d8750556896349
> dashboard link: https://syzkaller.appspot.com/bug?extid=5ad567a418794b9b5983
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1450d9f0700000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=130ef35bb00000
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+5ad567a418794b9b5983@syzkaller.appspotmail.com

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/dborkman/bpf.git pr/rb-vmap