Qemu build issues on Ubuntu 19

[monik3r]

Hi,

There seems to be a problem with building QEMU while running Ubuntu 19 when setting up phuzzer.

   static int memfd_create(const char *name, unsigned int flags)
              ^~~~~~~~~~~~
  In file included from /usr/include/x86_64-linux-gnu/bits/mman-linux.h:111:0,
                   from /usr/include/x86_64-linux-gnu/bits/mman.h:34,
                   from /usr/include/x86_64-linux-gnu/sys/mman.h:41,
                   from /tmp/pip-req-build-r26yq_bw/bin/afl-unix/qemu_mode/qemu-2.10.0/include/sysemu/os-posix.h:29,
                   from /tmp/pip-req-build-r26yq_bw/bin/afl-unix/qemu_mode/qemu-2.10.0/include/qemu/osdep.h:104,
                   from util/memfd.c:28:
  /usr/include/x86_64-linux-gnu/bits/mman-shared.h:50:5: note: previous declaration of ‘memfd_create’ was here
   int memfd_create (const char *__name, unsigned int __flags) __THROW;
       ^~~~~~~~~~~~
  make: *** [/tmp/pip-req-build-r26yq_bw/bin/afl-unix/qemu_mode/qemu-2.10.0/rules.mak:66: util/memfd.o] Error 1

I've tried downgrading gcc and etc to 6.0 (was using 8.4 before), and same issue. It might be related to a similar issue in Avatar2: https://github.com/avatartwo/avatar2/issues/14.

To maybe help diagnose this would it be possible to know what distro and kernel verion phuzzer is being developed with? Thanks!

[zardus]

We target all development to the latest LTS release of Ubuntu (18.04, currently).

On Fri, Jan 3, 2020 at 6:47 PM Andrew Hughes notifications@github.com wrote:

Hi,

There seems to be a problem with building QEMU while running Ubuntu 19 when setting up phuzzer.

static int memfd_create(const char *name, unsigned int flags)

          ^~~~~~~~~~~~

In file included from /usr/include/x86_64-linux-gnu/bits/mman-linux.h:111:0,

               from /usr/include/x86_64-linux-gnu/bits/mman.h:34,

               from /usr/include/x86_64-linux-gnu/sys/mman.h:41,

               from /tmp/pip-req-build-r26yq_bw/bin/afl-unix/qemu_mode/qemu-2.10.0/include/sysemu/os-posix.h:29,

               from /tmp/pip-req-build-r26yq_bw/bin/afl-unix/qemu_mode/qemu-2.10.0/include/qemu/osdep.h:104,

               from util/memfd.c:28:

/usr/include/x86_64-linux-gnu/bits/mman-shared.h:50:5: note: previous declaration of ‘memfd_create’ was here

int memfd_create (const char *name, unsigned int flags) __THROW;

   ^~~~~~~~~~~~

make: *** [/tmp/pip-req-build-r26yq_bw/bin/afl-unix/qemu_mode/qemu-2.10.0/rules.mak:66: util/memfd.o] Error 1

I've tried downgrading gcc and etc to 6.0 (was using 8.4 before), and same issue. It might be related to a similar issue in Avatar2: avatartwo/avatar2#14 https://github.com/avatartwo/avatar2/issues/14.

To maybe help diagnose this would it be possible to know what distro and kernel verion phuzzer is being developed with? Thanks!

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[monik3r]

Can confirm that Ubuntu 18.04 works, thanks

[mahaloz]

Hey this is still an issue in 20.04 LTS. Looking into a fix now.

[twizmwazin]

This issue seems to have to do with building the binaries for shellphish-afl and shellphish-qemu rather than the phuzzer package itself. This should be able to be bypassed by installing our wheels from the angr/wheels repo. I was able to get phuzzer installed in a 20.04 docker container like this:

FROM ubuntu:focal

RUN apt-get update && apt-get install -y git

RUN git clone https://github.com/angr/angr-dev.git /root/angr-dev
WORKDIR /root/angr-dev

RUN DEBIAN_FRONTEND="noninteractive" ./setup.sh -i -u

RUN pip3 install https://github.com/angr/wheels/blob/master/shellphish_afl-1.2.1-py2.py3-none-manylinux1_x86_64.whl?raw=true
RUN pip3 install https://github.com/angr/wheels/blob/master/shellphish_qemu-0.10.0-py3-none-manylinux1_x86_64.whl?raw=true

RUN ./setup.sh -u phuzzer

RUN python3 -c "import phuzzer; print('it works')"

[github-actions[bot]]

This issue has been marked as stale because it has no recent activity. Please comment or add the pinned tag to prevent this issue from being closed.

[github-actions[bot]]

This issue has been marked as stale because it has no recent activity. Please comment or add the pinned tag to prevent this issue from being closed.

[github-actions[bot]]

This issue has been marked as stale because it has no recent activity. Please comment or add the pinned tag to prevent this issue from being closed.

[twizmwazin]

This issue is related to shellphish-qemu and we have a workaround, so I'm going to consider this complete.