Build failure: reptyr

[eclairevoyant]

Steps To Reproduce

Steps to reproduce the behavior:

1. build reptyr on master (fdfe8b3)

Build log

`nix-build -A reptyr`

these 2 derivations will be built:
  /nix/store/hw61xfbrq39nc3rhg9940fwkws3jq91p-python3-3.11.8-env.drv
  /nix/store/vsa31jwx702s1vwhhbh3nnq6qca5dk9z-reptyr-0.10.0.drv
this path will be fetched (0.03 MiB download, 0.14 MiB unpacked):
  /nix/store/r2yc33xb93yh48x4jjw78yidm8sg28b1-source
copying path '/nix/store/r2yc33xb93yh48x4jjw78yidm8sg28b1-source' from 'https://cache.nixos.org'...
building '/nix/store/hw61xfbrq39nc3rhg9940fwkws3jq91p-python3-3.11.8-env.drv'...
created 221 symlinks in user environment
building '/nix/store/vsa31jwx702s1vwhhbh3nnq6qca5dk9z-reptyr-0.10.0.drv'...
Running phase: unpackPhase
unpacking source archive /nix/store/r2yc33xb93yh48x4jjw78yidm8sg28b1-source
source root is source
Running phase: patchPhase
Running phase: updateAutotoolsGnuConfigScriptsPhase
Running phase: configurePhase
no configure script, doing nothing
Running phase: buildPhase
build flags: SHELL=/nix/store/087167dfxal194pm54cmcbbxsfy3cjgn-bash-5.2p26/bin/bash PREFIX= DESTDIR=\$\(out\)
gcc -MD -Wall -Werror -D_GNU_SOURCE -g    -c -o reptyr.o reptyr.c
gcc -MD -Wall -Werror -D_GNU_SOURCE -g    -c -o reallocarray.o reallocarray.c
gcc -MD -Wall -Werror -D_GNU_SOURCE -g    -c -o attach.o attach.c
gcc -MD -Wall -Werror -D_GNU_SOURCE -g    -c -o platform/linux/linux_ptrace.o platform/linux/linux_ptrace.c
gcc -MD -Wall -Werror -D_GNU_SOURCE -g    -c -o platform/linux/linux.o platform/linux/linux.c
gcc   reptyr.o reallocarray.o attach.o platform/linux/linux_ptrace.o platform/linux/linux.o   -o reptyr
Running phase: checkPhase
check flags: SHELL=/nix/store/087167dfxal194pm54cmcbbxsfy3cjgn-bash-5.2p26/bin/bash PREFIX= DESTDIR=\$\(out\) PYTHON_CMD=/nix/store/dq5vmdvn8v480m8wins4w350nf1qghcd-python3-3.11.8-env/bin/python3.11 test
gcc -MD -Wall -Werror -D_GNU_SOURCE -g    -c -o test/victim.o test/victim.c
gcc   test/victim.o   -o test/victim
/nix/store/dq5vmdvn8v480m8wins4w350nf1qghcd-python3-3.11.8-env/bin/python3.11 test/basic.py
hello
ECHO: hello
world
[+] Checking for problematic process group members...
[+] Making sure we have permission to attach...
[+] Using tty: /dev/pts/2
world
[-] Timed out waiting for child stop.
[+] Allocated scratch page: 7ffff7dd5000
[+] Looking up fds for tty in child.
[+] Resolved child tty: 8800
[-] Unable to stat /dev/console
[+] Found an alias for the tty: 0
[+] Found an alias for the tty: 1
[+] Found an alias for the tty: 2
[+] Opened the new tty in the child: 3
[+] Set the controlling tty
ECHO: world
final
/nix/store/dq5vmdvn8v480m8wins4w350nf1qghcd-python3-3.11.8-env/bin/python3.11 test/tty-steal.py
Unable to find `prctl.set_ptracer`, skipping `PR_SET_PTRACER`.
spawned children: me=88 victim=89 reptyr=90
world
[+] Making sure we have permission to attach...
[+] session leader of pid 89 = 89
[+] found terminal emulator process: 88
[+] Listening on socket: /tmp/reptyr.BmRgfy/reptyr.sock
[+] Attaching terminal emulator pid=88
Unable to attach to pid 89: Operation not permitted
The kernel denied permission while attaching. If your uid matches
the target's, check the value of /proc/sys/kernel/yama/ptrace_scope.
For more information, see /etc/sysctl.d/10-ptrace.conf
world
Traceback (most recent call last):
  File "/build/source/test/tty-steal.py", line 38, in <module>
    reptyr.expect("ECHO: world")
  File "/nix/store/dq5vmdvn8v480m8wins4w350nf1qghcd-python3-3.11.8-env/lib/python3.11/site-packages/pexpect/spawnbase.py", line 354, in expect
    return self.expect_list(compiled_pattern_list,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/dq5vmdvn8v480m8wins4w350nf1qghcd-python3-3.11.8-env/lib/python3.11/site-packages/pexpect/spawnbase.py", line 383, in expect_list
    return exp.expect_loop(timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/nix/store/dq5vmdvn8v480m8wins4w350nf1qghcd-python3-3.11.8-env/lib/python3.11/site-packages/pexpect/expect.py", line 179, in expect_loop
    return self.eof(e)
           ^^^^^^^^^^^
  File "/nix/store/dq5vmdvn8v480m8wins4w350nf1qghcd-python3-3.11.8-env/lib/python3.11/site-packages/pexpect/expect.py", line 122, in eof
    raise exc
pexpect.exceptions.EOF: End Of File (EOF). Exception style platform.
<pexpect.pty_spawn.spawn object at 0x7ffff745f4d0>
command: ./reptyr
args: ['./reptyr', '-V', '-T', '89']
buffer (last 100 chars): b''
before (last 100 chars): b'/proc/sys/kernel/yama/ptrace_scope.\r\nFor more information, see /etc/sysctl.d/10-ptrace.conf\r\nworld\r\n'
after: <class 'pexpect.exceptions.EOF'>
match: None
match_index: None
exitstatus: 1
flag_eof: True
pid: 90
child_fd: 6
closed: False
timeout: 30
delimiter: <class 'pexpect.exceptions.EOF'>
logfile: <_io.BufferedWriter name='<stdout>'>
logfile_read: None
logfile_send: None
maxread: 2000
ignorecase: False
searchwindowsize: None
delaybeforesend: 0.05
delayafterclose: 0.1
delayafterterminate: 0.1
searcher: searcher_re:
    0: re.compile(b'ECHO: world')
make: *** [Makefile:30: test] Error 1

Additional context

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@7c6f434c

Metadata

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output here

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[7c6f434c]

Hm works for me… ah I have /proc/sys/kernel/yama/ptrace_scope as 0.

Well dunno, what we want, just kill the tests I guess?

[eclairevoyant]

Since it's a kernel param, if we care about tests, they could be handled as a nixos test instead. But I guess they should be disabled when building, yeah