Your message dated Tue, 19 Jun 2018 07:05:25 +0200
with message-id <[email protected]>
and subject line Re: python3: pip3 segfaults when cffi is installed with pip
while python3-openssl is installed
has caused the Debian Bug report #896430,
regarding python3: pip3 segfaults when cffi is installed with pip while
python3-openssl is installed
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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896430: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896430
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: python3
Version: 3.5.3-1
Dear maintainers,
Excuse me if I did not file this bug against the right package; but it
involves three different packages.
I noticed a segfault in pip while installing some program with a huge
set of dependencies. I managed to narrow it down to the cffi package.
Here is how to reproduce the bug on a computer with Stretch installed (I
did not try other Debian versions):
debootstrap stretch chroot/
mount --bind /dev chroot/dev/ # for networking
chroot chroot/
apt install python3 python3-pip python3-openssl
adduser tmp
su tmp
pip3 install --user cffi
pip3 install --user cffi
This causes the *second* call to pip3 to segfault while it is shutting
down (I found other instances of that segfault while a program is
running, but it is harder to reproduce).
You may note that if python3-openssl is not installed, then there is no
segfault.
Here is the valgrind output corresponding to that segfault (this output
is sometimes a bit different):
==25001== Invalid read of size 1
==25001== at 0x25F194: visit_decref (gcmodule.c:373)
==25001== by 0x2E1464: dict_traverse.lto_priv.170 (dictobject.c:2570)
==25001== by 0x264012: subtract_refs (gcmodule.c:398)
==25001== by 0x264012: collect (gcmodule.c:951)
==25001== by 0x35A03C: collect_with_callback (gcmodule.c:1119)
==25001== by 0x35A0A0: PyGC_Collect (gcmodule.c:1583)
==25001== by 0x35D11B: Py_Finalize (pylifecycle.c:567)
==25001== by 0x35D217: Py_Exit (pylifecycle.c:1465)
==25001== by 0x35D2FD: handle_system_exit (pythonrun.c:602)
==25001== by 0x35D365: PyErr_PrintEx (pythonrun.c:612)
==25001== by 0x38BE79: RunModule (main.c:210)
==25001== by 0x38C71E: Py_Main (main.c:709)
==25001== by 0x21CC00: main (python.c:65)
==25001== Address 0xa9 is not stack'd, malloc'd or (recently) free'd
I did some debugging with gdb, and the "op" object in visit_decref
(gcmodule.c:373) has an ob_type set to NULL.
Unfortunately, because of the compilation optimizations, I was unable to
get more information.
Best regards,
Val
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--- End Message ---
--- Begin Message ---
> debootstrap stretch chroot/
> mount --bind /dev chroot/dev/ # for networking
> chroot chroot/
> apt install python3 python3-pip python3-openssl
> adduser tmp
> su tmp
> pip3 install --user cffi
> pip3 install --user cffi
not a Debian issue, you should report that where you did install cffi from.
Maybe the manylinux wheels should be called somelinux wheels instead, or more
realistically centos wheels.
--- End Message ---
