[Bug 1865300] Re: gnome-shell-hotplug-sniffer crashed with SIGSEGV in g_str_hash() from g_hash_table_lookup() from deep_count_more_files_callback()

[Marco Trevisan (Treviño)]

I've prepared a mitigation in gnome-shell as
https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1302

However, it may be that both debian and ubuntu are lacking some mime
type definitions, as it looks weird to me that it we're the only one
affected by this (which under the hood is `g_file_info_get_content_type`
returning NULL for a file).

** Changed in: gnome-shell (Ubuntu)
       Status: Confirmed => In Progress

** Changed in: glib2.0 (Ubuntu)
       Status: Confirmed => Invalid

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Title:
  gnome-shell-hotplug-sniffer crashed with SIGSEGV in g_str_hash() from
  g_hash_table_lookup() from deep_count_more_files_callback()

Status in GNOME Shell:
  Unknown
Status in glib2.0 package in Ubuntu:
  Invalid
Status in gnome-shell package in Ubuntu:
  In Progress

Bug description:
  https://errors.ubuntu.com/problem/b6069e75f805530e3c7722835d567cfdb84f2fec
  https://errors.ubuntu.com/problem/2edf29b9677e3de0d55d2114024f39c4c52b45e9

  ---

  Happened during normal use of the desktop.

  ProblemType: Crash
  DistroRelease: Ubuntu 20.04
  Package: gnome-shell 3.34.3-1ubuntu1
  ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
  Uname: Linux 5.4.0-14-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair wl
  ApportVersion: 2.20.11-0ubuntu18
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Feb 29 19:51:58 2020
  DisplayManager: gdm3
  ExecutablePath: /usr/lib/gnome-shell/gnome-shell-hotplug-sniffer
  InstallationDate: Installed on 2020-01-25 (35 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200117)
  ProcCmdline: /usr/lib/gnome-shell/gnome-shell-hotplug-sniffer
  RelatedPackageVersions: mutter-common 3.34.3-1ubuntu1
  SegvAnalysis:
   Segfault happened at: 0x7f5f54fa6444 <g_str_hash+4>:	movsbl (%rdi),%eax
   PC (0x7f5f54fa6444) ok
   source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
   destination "%eax" ok
  SegvReason: reading NULL VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   g_str_hash () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   g_hash_table_lookup () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
   ?? ()
   ?? () from /lib/x86_64-linux-gnu/libgio-2.0.so.0
   ?? () from /lib/x86_64-linux-gnu/libgio-2.0.so.0
  Title: gnome-shell-hotplug-sniffer crashed with SIGSEGV in g_str_hash()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip docker lpadmin lxd plugdev sambashare sudo
  separator:

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