Output of the attached file when running apport-retrace: apport-retrace -S system -v -s _usr_libexec_gnome-shell-hotplug-sniffer.1000.crash Get:1 http://dl.google.com/linux/chrome/deb stable InRelease [1811 B] Get:2 https://mirror.init7.net/ubuntu focal InRelease [265 kB] Get:3 http://dl.google.com/linux/chrome/deb stable/main amd64 Packages [1127 B] Ign http://ddebs.ubuntu.com focal-updates InRelease Ign http://ddebs.ubuntu.com focal-proposed InRelease Ign http://ddebs.ubuntu.com focal InRelease Get:4 http://ddebs.ubuntu.com focal-updates Release [40.5 kB] Get:5 https://mirror.init7.net/ubuntu focal-updates InRelease [107 kB] Get:6 http://ddebs.ubuntu.com focal-proposed Release [40.5 kB] Get:7 https://mirror.init7.net/ubuntu focal-backports InRelease [98.3 kB] Get:8 http://ddebs.ubuntu.com focal Release [40.4 kB] Get:9 https://mirror.init7.net/ubuntu focal-security InRelease [107 kB] Get:10 http://ddebs.ubuntu.com focal-updates Release.gpg [819 B] Get:11 http://ddebs.ubuntu.com focal-proposed Release.gpg [819 B] Get:12 https://mirror.init7.net/ubuntu focal/multiverse Sources [174 kB] Get:13 http://ddebs.ubuntu.com focal Release.gpg [819 B] Get:14 http://ddebs.ubuntu.com focal-updates/main amd64 Packages [102 kB] Get:15 https://mirror.init7.net/ubuntu focal/restricted Sources [6472 B] Get:16 https://mirror.init7.net/ubuntu focal/main Sources [847 kB] Get:17 http://ddebs.ubuntu.com focal-updates/universe amd64 Packages [94.6 kB] Get:18 http://ddebs.ubuntu.com focal-proposed/main amd64 Packages [24.9 kB] Get:19 http://ddebs.ubuntu.com focal-proposed/universe amd64 Packages [25.5 kB] Get:20 http://ddebs.ubuntu.com focal/main amd64 Packages [514 kB] Get:21 http://ddebs.ubuntu.com focal/universe amd64 Packages [4370 kB] Get:22 https://mirror.init7.net/ubuntu focal/universe Sources [9707 kB] Get:23 http://ddebs.ubuntu.com focal/multiverse amd64 Packages [67.6 kB] Get:24 https://mirror.init7.net/ubuntu focal/main amd64 Packages [970 kB] Get:25 https://mirror.init7.net/ubuntu focal/main amd64 DEP-11 Metadata [494 kB] Get:26 https://mirror.init7.net/ubuntu focal/main DEP-11 48x48 Icons [98.4 kB] Get:27 https://mirror.init7.net/ubuntu focal/main DEP-11 64x64 Icons [163 kB] Get:28 https://mirror.init7.net/ubuntu focal amd64 Contents (deb) [40.9 MB] Get:29 https://mirror.init7.net/ubuntu focal/restricted amd64 Packages [22.0 kB] Get:30 https://mirror.init7.net/ubuntu focal/universe amd64 Packages [8628 kB] Get:31 https://mirror.init7.net/ubuntu focal/universe amd64 DEP-11 Metadata [3603 kB] Get:32 https://mirror.init7.net/ubuntu focal/universe DEP-11 48x48 Icons [3016 kB] Get:33 https://mirror.init7.net/ubuntu focal/universe DEP-11 64x64 Icons [7794 kB] Get:34 https://mirror.init7.net/ubuntu focal/multiverse amd64 Packages [144 kB] Get:35 https://mirror.init7.net/ubuntu focal/multiverse amd64 DEP-11 Metadata [48.4 kB] Get:36 https://mirror.init7.net/ubuntu focal/multiverse DEP-11 48x48 Icons [23.1 kB] Get:37 https://mirror.init7.net/ubuntu focal/multiverse DEP-11 64x64 Icons [192 kB] Get:38 https://mirror.init7.net/ubuntu focal-updates/universe Sources [36.3 kB] Get:39 https://mirror.init7.net/ubuntu focal-updates/restricted Sources [2308 B] Get:40 https://mirror.init7.net/ubuntu focal-updates/main Sources [80.3 kB] Get:41 https://mirror.init7.net/ubuntu focal-updates/multiverse Sources [716 B] Get:42 https://mirror.init7.net/ubuntu focal-updates/main amd64 Packages [199 kB] Get:43 https://mirror.init7.net/ubuntu focal-updates/main amd64 DEP-11 Metadata [105 kB] Get:44 https://mirror.init7.net/ubuntu focal-updates/main DEP-11 48x48 Icons [26.5 kB] Get:45 https://mirror.init7.net/ubuntu focal-updates/main DEP-11 64x64 Icons [35.4 kB] Get:46 https://mirror.init7.net/ubuntu focal-updates amd64 Contents (deb) [5556 kB] Get:47 https://mirror.init7.net/ubuntu focal-updates/restricted amd64 Packages [11.0 kB] Get:48 https://mirror.init7.net/ubuntu focal-updates/universe amd64 Packages [111 kB] Get:49 https://mirror.init7.net/ubuntu focal-updates/universe amd64 DEP-11 Metadata [151 kB] Get:50 https://mirror.init7.net/ubuntu focal-updates/universe DEP-11 48x48 Icons [76.5 kB] Get:51 https://mirror.init7.net/ubuntu focal-updates/universe DEP-11 64x64 Icons [121 kB] Get:52 https://mirror.init7.net/ubuntu focal-updates/multiverse amd64 Packages [1172 B] Get:53 https://mirror.init7.net/ubuntu focal-backports/universe Sources [1184 B] Get:54 https://mirror.init7.net/ubuntu focal-backports amd64 Contents (deb) [3377 B] Get:55 https://mirror.init7.net/ubuntu focal-backports/universe amd64 Packages [2784 B] Get:56 https://mirror.init7.net/ubuntu focal-backports/universe amd64 DEP-11 Metadata [532 B] Get:57 https://mirror.init7.net/ubuntu focal-backports/universe DEP-11 48x48 Icons [29 B] Get:58 https://mirror.init7.net/ubuntu focal-backports/universe DEP-11 64x64 Icons [29 B] Get:59 https://mirror.init7.net/ubuntu focal-security/multiverse Sources [716 B] Get:60 https://mirror.init7.net/ubuntu focal-security/restricted Sources [2308 B] Get:61 https://mirror.init7.net/ubuntu focal-security/universe Sources [2308 B] Get:62 https://mirror.init7.net/ubuntu focal-security/main Sources [33.8 kB] Get:63 https://mirror.init7.net/ubuntu focal-security/main amd64 Packages [106 kB] Get:64 https://mirror.init7.net/ubuntu focal-security/main amd64 DEP-11 Metadata [21.2 kB] Get:65 https://mirror.init7.net/ubuntu focal-security/main DEP-11 48x48 Icons [8330 B] Get:66 https://mirror.init7.net/ubuntu focal-security/main DEP-11 64x64 Icons [12.1 kB] Get:67 https://mirror.init7.net/ubuntu focal-security amd64 Contents (deb) [4000 kB] Get:68 https://mirror.init7.net/ubuntu focal-security/restricted amd64 Packages [11.0 kB] Get:69 https://mirror.init7.net/ubuntu focal-security/universe amd64 Packages [35.5 kB] Get:70 https://mirror.init7.net/ubuntu focal-security/universe amd64 DEP-11 Metadata [31.6 kB] Get:71 https://mirror.init7.net/ubuntu focal-security/universe DEP-11 48x48 Icons [3321 B] Get:72 https://mirror.init7.net/ubuntu focal-security/universe DEP-11 64x64 Icons [5013 B] Get:73 https://mirror.init7.net/ubuntu focal-security/multiverse amd64 Packages [1172 B] Fetched 93.5 MB in 6s (1924 kB/s) Fetched 0 B in 0s (0 B/s) Extracting downloaded debs... dynamically loaded /usr/lib/x86_64-linux-gnu/libffi.so.7.1.0 needs package libffi7, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0.6400.2 needs package libglib2.0-0, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libgmodule-2.0.so.0.6400.2 needs package libglib2.0-0, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libc-2.31.so needs package libc6, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libmount.so.1.1.0 needs package libmount1, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0.6400.2 needs package libglib2.0-0, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libz.so.1.2.11 needs package zlib1g, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libpthread-2.31.so needs package libc6, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/ld-2.31.so needs package libc6, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libm-2.31.so needs package libc6, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libselinux.so.1 needs package libselinux1, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/gvfs/libgvfscommon.so needs package gvfs-libs, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 needs package libglib2.0-0, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so needs package gvfs, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0.4000.0 needs package libgdk-pixbuf2.0-0, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libdl-2.31.so needs package libc6, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libresolv-2.31.so needs package libc6, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libblkid.so.1.1.0 needs package libblkid1, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libpcre2-8.so.0.9.0 needs package libpcre2-8-0, queueing dynamically loaded /usr/lib/x86_64-linux-gnu/libpcre.so.3.13.3 needs package libpcre3, queueing Installing extra package gnome-shell to get ExecutablePath Get:1 http://ddebs.ubuntu.com focal-updates/main amd64 gnome-shell-dbgsym amd64 3.36.2-1ubuntu1~20.04.1 [1221 kB] Get:2 https://mirror.init7.net/ubuntu focal/main amd64 libc6 amd64 2.31-0ubuntu9 [2713 kB] Get:3 http://ddebs.ubuntu.com focal/main amd64 gvfs-dbgsym amd64 1.44.1-1ubuntu1 [366 kB] Get:4 http://ddebs.ubuntu.com focal/main amd64 gvfs-libs-dbgsym amd64 1.44.1-1ubuntu1 [349 kB] Get:5 https://mirror.init7.net/ubuntu focal/main amd64 libblkid1 amd64 2.34-0.1ubuntu9 [137 kB] Get:6 http://ddebs.ubuntu.com focal/main amd64 libblkid1-dbgsym amd64 2.34-0.1ubuntu9 [544 kB] Get:7 https://mirror.init7.net/ubuntu focal/main amd64 libpcre2-8-0 amd64 10.34-7 [197 kB] Get:8 https://mirror.init7.net/ubuntu focal/main amd64 libselinux1 amd64 3.0-1build2 [68.8 kB] Get:9 https://mirror.init7.net/ubuntu focal/main amd64 libmount1 amd64 2.34-0.1ubuntu9 [149 kB] Get:10 https://mirror.init7.net/ubuntu focal/main amd64 libpcre3 amd64 2:8.39-12build1 [232 kB] Get:11 https://mirror.init7.net/ubuntu focal/main amd64 zlib1g amd64 1:1.2.11.dfsg-2ubuntu1 [53.7 kB] Get:12 https://mirror.init7.net/ubuntu focal/main amd64 libffi7 amd64 3.3-4 [19.7 kB] Get:13 https://mirror.init7.net/ubuntu focal/main amd64 libglib2.0-0 amd64 2.64.2-1~fakesync1 [1284 kB] Get:14 http://ddebs.ubuntu.com focal/main amd64 libffi7-dbgsym amd64 3.3-4 [53.1 kB] Get:15 http://ddebs.ubuntu.com focal/main amd64 libgdk-pixbuf2.0-0-dbgsym amd64 2.40.0+dfsg-3 [429 kB] Get:16 http://ddebs.ubuntu.com focal/main amd64 libglib2.0-0-dbgsym amd64 2.64.2-1~fakesync1 [3807 kB] Get:17 https://mirror.init7.net/ubuntu focal/main amd64 libgdk-pixbuf2.0-0 amd64 2.40.0+dfsg-3 [169 kB] Get:18 https://mirror.init7.net/ubuntu focal-updates/main amd64 gnome-shell amd64 3.36.2-1ubuntu1~20.04.1 [779 kB] Get:19 https://mirror.init7.net/ubuntu focal/main amd64 gvfs-libs amd64 1.44.1-1ubuntu1 [97.1 kB] Get:20 https://mirror.init7.net/ubuntu focal/main amd64 gvfs amd64 1.44.1-1ubuntu1 [115 kB] Get:21 https://mirror.init7.net/ubuntu focal/main amd64 libpcre3-dbg amd64 2:8.39-12build1 [1353 kB] Get:22 https://mirror.init7.net/ubuntu focal/main amd64 libc6-dbg amd64 2.31-0ubuntu9 [5671 kB] Get:23 http://ddebs.ubuntu.com focal/main amd64 libmount1-dbgsym amd64 2.34-0.1ubuntu9 [471 kB] Get:24 http://ddebs.ubuntu.com focal/main amd64 libpcre2-8-0-dbgsym amd64 10.34-7 [517 kB] Get:25 http://ddebs.ubuntu.com focal/main amd64 libselinux1-dbgsym amd64 3.0-1build2 [196 kB] Get:26 http://ddebs.ubuntu.com focal/main amd64 zlib1g-dbgsym amd64 1:1.2.11.dfsg-2ubuntu1 [105 kB] Fetched 21.1 MB in 6s (1906 kB/s) Extracting downloaded debs... dpkg-source: info: extracting gnome-shell in gnome-shell-3.36.2 dpkg-source: info: unpacking gnome-shell_3.36.2.orig.tar.xz dpkg-source: info: unpacking gnome-shell_3.36.2-1ubuntu1~20.04.1.debian.tar.xz dpkg-source: info: using patch list from debian/patches/series dpkg-source: info: applying tweener-Save-handlers-on-target-and-remove-them-on-destro.patch dpkg-source: info: applying extensions-app-Add-back-minimal-compatibility-with-older-.patch dpkg-source: info: applying ubuntu/desktop_detect.patch dpkg-source: info: applying ubuntu/lightdm-user-switching.patch dpkg-source: info: applying ubuntu/lock_on_suspend.patch dpkg-source: info: applying ubuntu/background_login.patch dpkg-source: info: applying ubuntu/gdm_alternatives.patch dpkg-source: info: applying main-show-an-error-message-on-gnome-shell-crash.patch dpkg-source: info: applying global-make-possible-to-set-debug-flags-dynamically.patch dpkg-source: info: applying main-increase-the-granularity-of-backtraces-in-SHELL_DEBU.patch dpkg-source: info: applying main-add-backtrace-crashes-all-and-backtrace-all.patch dpkg-source: info: applying sessionMode-add-support-for-debugFlags-parameter.patch dpkg-source: info: applying st-scroll-view-Handle-the-case-where-scrollbars-are-NULL.patch dpkg-source: info: applying magnifier-Show-cursor-when-magnifier-is-enabled-and-scale.patch dpkg-source: info: applying ubuntu/search-call-XUbuntuCancel-method-on-providers-when-no-dat.patch dpkg-source: info: applying ubuntu/resolve_alternate_theme_path.patch dpkg-source: info: applying ubuntu/secure_mode_extension.patch dpkg-source: info: applying ubuntu/keep-ubuntu-logo-bright-lp1867133-v1.patch --- stack trace --- #0 0x00007f07609a4494 in g_str_hash () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 No symbol table info available. #1 0x00007f07609a35dc in g_hash_table_lookup () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 No symbol table info available. #2 0x000055f735426697 in deep_count_more_files_callback () No symbol table info available. #3 0x00007f0760b5bfab in next_async_callback_wrapper (source_object=0x55f7366fe500, res=0x7f0754003ee0, user_data=0x55f7367121a0) at ../../../gio/gfileenumerator.c:305 enumerator = 0x55f7366fe500 #4 0x00007f0760ba1f49 in g_task_return_now (task=0x7f0754003ee0) at ../../../gio/gtask.c:1214 No locals. #5 0x00007f0760ba2b3d in g_task_return (task=0x7f0754003ee0, type=) at ../../../gio/gtask.c:1283 source = 0x55f736718c90 #6 0x00007f075eb74df4 in _g_task_return_pointer_idle_cb () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so No symbol table info available. #7 0x00007f07609b5e8e in g_main_context_dispatch () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 No symbol table info available. #8 0x00007f07609b6240 in g_main_context_iterate.isra () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 No symbol table info available. #9 0x00007f07609b6533 in g_main_loop_run () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 No symbol table info available. #10 0x000055f735425cbe in main () No symbol table info available. --- source code stack trace --- #0 0x00007f07609a4494 in g_str_hash () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 #1 0x00007f07609a35dc in g_hash_table_lookup () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 #2 0x000055f735426697 in deep_count_more_files_callback () #3 0x00007f0760b5bfab in next_async_callback_wrapper (source_object=0x55f7366fe500, res=0x7f0754003ee0, user_data=0x55f7367121a0) at ../../../gio/gfileenumerator.c:305 [Error: gfileenumerator.c was not found in source tree] #4 0x00007f0760ba1f49 in g_task_return_now (task=0x7f0754003ee0) at ../../../gio/gtask.c:1214 [Error: gtask.c was not found in source tree] #5 0x00007f0760ba2b3d in g_task_return (task=0x7f0754003ee0, type=) at ../../../gio/gtask.c:1283 [Error: gtask.c was not found in source tree] #6 0x00007f075eb74df4 in _g_task_return_pointer_idle_cb () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/gio/modules/libgvfsdbus.so #7 0x00007f07609b5e8e in g_main_context_dispatch () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 #8 0x00007f07609b6240 in g_main_context_iterate.isra () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 #9 0x00007f07609b6533 in g_main_loop_run () from /tmp/apport_sandbox_isywt5ue/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0.6400.2 #10 0x000055f735425cbe in main ()