Re: [net: sock] BUG: unable to handle kernel NULL pointer dereference at 0000000000000007

[Alexei Starovoitov]

On Wed, Dec 10, 2014 at 3:29 PM, Fengguang Wu <fengguang.wu@xxxxxxxxx> wrote:
> Greetings,
>
> 0day kernel testing robot got the below dmesg and the first bad commit is
>
>     net: sock: allow eBPF programs to be attached to sockets

> [init] Kernel was tainted on startup. Will ignore flags that are already set.
> [init] Started watchdog process, PID is 9354
> [main] Main thread is alive.
> [   21.233581] BUG: unable to handle kernel NULL pointer dereference at 0000000000000007
> [   21.234709] IP: [<ffffffff8156ebda>] sk_attach_bpf+0x39/0xc2

thanks for the report! syscall fuzzer is great.
I missed an extra check. Working on a fix.
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