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Re: lockdep WARNING in get_online_cpus

From Dmitry Vyukov <dvyukov@google.com>
Newsgroups linux.kernel
Subject Re: lockdep WARNING in get_online_cpus
Date 2016-04-05 11:50 +0200
Message-ID <rkvMu-13F-19@gated-at.bofh.it> (permalink)
References <rjtto-48p-5@gated-at.bofh.it> <rk7TQ-e4-25@gated-at.bofh.it> <rk8Ge-NO-9@gated-at.bofh.it> <rk9sB-18D-1@gated-at.bofh.it> <rkvMu-13F-3@gated-at.bofh.it>
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On Tue, Apr 5, 2016 at 11:41 AM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Mon, Apr 04, 2016 at 11:50:07AM +0200, Dmitry Vyukov wrote:
>> Yes, I am able to reproduce it by running:
>>
>> # ./syz-execprog  -cover=0 -repeat=0 -procs=20 -nobody=0
>> crash-qemu-26-1459761514194788294
>>
>> crash-qemu-26-1459761514194788294 being:
>> https://gist.githubusercontent.com/dvyukov/bce719c2b7dede54f96d8bbb7c78714f/raw/08a7a237986f0e3bccc7c0e800a3bdaa32e1fc0b/gistfile1.txt
>
>
> root@ivb-ep:~/gopath/src/github.com/google/syzkaller# ./bin/syz-execprog -cover=0 -repeat=0 -procs=20 -nobody=0 gistfile1.txt
> 2016/04/05 11:39:37 parsed 391 programs
> 2016/04/05 11:39:37 executed 0 programs
> result: failed=false hanged=false err=failed to start executor binary: fork/exec /root/gopath/src/github.com/google/syzkaller: permission denied
>
> result: failed=false hanged=false err=failed to start executor binary: fork/exec /root/gopath/src/github.com/google/syzkaller: permission denied
>
> result: failed=false hanged=false err=failed to start executor binary: fork/exec /root/gopath/src/github.com/google/syzkaller: permission denied
>
> (which goes on ad inf.)
>
> Clearly I'm not doing it right.. help?

The latest version of syz-execproc uses ./syz-executor by default. If
you don't have ./syz-executor, add -executor=/path/to/syz-executor.

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Re: lockdep WARNING in get_online_cpus Dmitry Vyukov <dvyukov@google.com> - 2016-04-04 10:20 +0200
  Re: lockdep WARNING in get_online_cpus Peter Zijlstra <peterz@infradead.org> - 2016-04-04 11:10 +0200
    Re: lockdep WARNING in get_online_cpus Dmitry Vyukov <dvyukov@google.com> - 2016-04-04 12:00 +0200
      Re: lockdep WARNING in get_online_cpus Peter Zijlstra <peterz@infradead.org> - 2016-04-05 11:50 +0200
        Re: lockdep WARNING in get_online_cpus Dmitry Vyukov <dvyukov@google.com> - 2016-04-05 11:50 +0200
          Re: lockdep WARNING in get_online_cpus Peter Zijlstra <peterz@infradead.org> - 2016-04-05 13:20 +0200
            Re: lockdep WARNING in get_online_cpus Dmitry Vyukov <dvyukov@google.com> - 2016-04-05 13:30 +0200

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