#1010362 cruft-ng: Segmentation fault in cruft-ng

Package:
cruft-ng
Source:
cruft-ng
Description:
program that finds any cruft built up on your system
Submitter:
richardn
Date:
2022-07-16 23:36:06 UTC
Severity:
normal
#1010362#5
Date:
2022-04-29 15:29:27 UTC
From:
To:
I had created a dpkg local diversion using the command -

dpkg-divert --divert /etc/PackageKit/20packagekit.distrib --rename /etc/apt/apt.conf.d/20packagekit

The output of the command "dpkg-divert --list" command is now -

diversion of /usr/share/dict/words to /usr/share/dict/words.pre-dictionaries-common by dictionaries-common
diversion of /usr/share/man/man1/sh.1.gz to /usr/share/man/man1/sh.distrib.1.gz by dash
local diversion of /etc/apt/apt.conf.d/20packagekit to /etc/PackageKit/20packagekit.distrib
diversion of /usr/bin/firefox to /usr/bin/firefox.real by firefox-esr
diversion of /bin/sh to /bin/sh.distrib by dash

When I run cruft-ng version 0.4.52 on the system it crashes with Segmentation fault

Below is the relevant part of the output (in gdb, with DEBUG variable set to 1)

Note that the output of "dpkg-divert --list" does not show a package name for the local diversion. The code parsing the output in dpkg_open() always assumes that there is one. (If the dpkg local diversion is removed, cruft-ng completes successfully)

...
READING FILES IN DPKG DATABASE
[Detaching after vfork from child process 104913]
diversion of /usr/share/dict/words to /usr/share/dict/words.pre-dictionaries-common by dictionaries-common

diversion of /usr/share/man/man1/sh.1.gz to /usr/share/man/man1/sh.distrib.1.gz by dash

local diversion of /etc/apt/apt.conf.d/20packagekit to /etc/PackageKit/20packagekit.distrib


Program received signal SIGSEGV, Segmentation fault.
__strlen_sse2 () at ../sysdeps/x86_64/multiarch/strlen-vec.S:133
Download failed: Invalid argument.  Continuing without source file ./string/../sysdeps/x86_64/multiarch/strlen-vec.S.
133	../sysdeps/x86_64/multiarch/strlen-vec.S: No such file or directory.
(gdb) bt
#0  __strlen_sse2 () at ../sysdeps/x86_64/multiarch/strlen-vec.S:133
#1  0x0000555555568e8c in std::char_traits<char>::length (__s=0x0)
    at /usr/include/c++/11/bits/char_traits.h:399
#2  std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::assign (__s=0x0, this=0x7fffffffcb20)
    at /usr/include/c++/11/bits/basic_string.h:1459
#3  std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::operator= (__s=0x0, this=0x7fffffffcb20)
    at /usr/include/c++/11/bits/basic_string.h:690
#4  read_diversions (diversions=std::vector of length 2, capacity 2 = {...})
    at ./dpkg_popen.cc:66
#5  0x00005555555696ee in read_dpkg_items (
    dpkg=std::vector of length 0, capacity 0) at ./dpkg_popen.cc:83
#6  0x0000555555558b5d in main (argc=<optimized out>, argv=<optimized out>)
    at ./cruft.cc:258
(gdb)
#1010362#10
Date:
2022-07-12 21:09:46 UTC
From:
To:
cruft-ng segfaults for me as well:

...
READING FILES IN DPKG DATABASE
[Detaching after vfork from child process 363152]
diversion of /usr/share/man/man1/perf.1.gz to /usr/share/man/man1/perf.wrapper.1.gz by linux-perf

diversion of /usr/share/dict/words to /usr/share/dict/words.pre-dictionaries-common by dictionaries-common

diversion of /usr/share/bash-completion/completions/perf to /usr/share/bash-completion/completions/perf.wrapper by linux-perf

diversion of /usr/bin/shasum to /usr/bin/shasum.bundled by libdigest-sha-perl

diversion of /usr/share/man/man1/podselect.1.gz to /usr/share/man/man1/podselect.bundled.1.gz by libpod-parser-perl

local diversion of /usr/share/applications/calibre-ebook-viewer.desktop to /usr/share/applications/calibre-ebook-viewer.desktop.distrib


Program received signal SIGSEGV, Segmentation fault.
__strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:74
Download failed: Invalid argument.  Continuing without source file ./string/../sysdeps/x86_64/multiarch/strlen-avx2.S.
74	../sysdeps/x86_64/multiarch/strlen-avx2.S: No such file or directory.
(gdb) where
#0  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:74
#1  0x0000555555568e8c in ?? ()
#2  0x00005555555696ee in ?? ()
#3  0x0000555555558b5d in ?? ()
#4  0x00007ffff7a4a81d in __libc_start_main (main=0x555555558870, argc=1,
    argv=0x7fffffffde98, init=<optimized out>, fini=<optimized out>,
    rtld_fini=<optimized out>, stack_end=0x7fffffffde88)
    at ../csu/libc-start.c:332
#5  0x000055555555aefa in ?? ()
(gdb)
#1010362#15
Date:
2022-07-16 23:33:46 UTC
From:
To:
We believe that the bug you reported is fixed in the latest version of
cruft-ng, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1010362@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Alexandre Detiste <alexandre.detiste@gmail.com> (supplier of updated cruft-ng package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sun, 17 Jul 2022 01:25:30 +0200
Source: cruft-ng
Architecture: source
Version: 0.4.53
Distribution: unstable
Urgency: medium
Maintainer: Alexandre Detiste <alexandre.detiste@gmail.com>
Changed-By: Alexandre Detiste <alexandre.detiste@gmail.com>
Closes: 1010362
Changes:
 cruft-ng (0.4.53) unstable; urgency=medium
 .
   * Fix segmentation fault when custom dpkg overrides are defined
     (Closes: #1010362)
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