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Message-ID: <CANn89iJUwnYGKW3mgCX8_9hFwwBeDXrbsk-XwOtsM2u0J7cyMw@mail.gmail.com> Date: Thu, 30 Nov 2023 17:19:35 +0100 From: Eric Dumazet <edumazet@...gle.com> To: John Fastabend <john.fastabend@...il.com> Cc: Daniel Borkmann <daniel@...earbox.net>, davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com, ast@...nel.org, andrii@...nel.org, martin.lau@...ux.dev, netdev@...r.kernel.org, bpf@...r.kernel.org, jakub@...udflare.com Subject: Re: pull-request: bpf 2023-11-30 On Thu, Nov 30, 2023 at 5:04 PM Eric Dumazet <edumazet@...gle.com> wrote: > > Here is the repro: > > # See https://goo.gl/kgGztJ for information about syzkaller reproducers. > #{"procs":1,"slowdown":1,"sandbox":"","sandbox_arg":0,"close_fds":false} > r0 = socket(0x1, 0x1, 0x0) > r1 = bpf$MAP_CREATE(0x0, &(0x7f0000000200)=@...e={0xf, 0x4, 0x4, 0x12}, 0x48) > bpf$MAP_UPDATE_ELEM(0x2, &(0x7f0000000140)={r1, &(0x7f0000000000), > &(0x7f0000000100)=@...6=r0}, 0x20) > > I will release the syzbot report, and send the patch, thanks. Actually I will release the syzbot report, and let you work on a fix, perhaps as you pointed out we could be more restrictive.
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