[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

It looks like the crash stopped happening after 42.0.

** Tags removed: impish

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

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags removed: hirsute

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

Only tracking in
https://errors.ubuntu.com/problem/7db21198c9a21745b60cc46aabafb2b7e636bf95
now, which only affects focal and later.


** Description changed:

  https://errors.ubuntu.com/problem/ada10af9bce533d2cce9447f055123b325fd6c1d
  https://errors.ubuntu.com/problem/7db21198c9a21745b60cc46aabafb2b7e636bf95
- https://errors.ubuntu.com/problem/73a2092e4c2d306d8a8e329a29a0f6ffd9a2dfeb
  
  ---
  
  Todays update had a kernal and   my gnome shell update. Happened when I
  rebooted.  I now have a black screen and no panel. Icons are all that
  shows up on desktop.
  
  ProblemType: CrashDistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.24.2-0ubuntu7
  ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
  Uname: Linux 4.11.0-10-generic x86_64
  ApportVersion: 2.20.5-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon Jul  3 12:46:31 2017
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  ProcCmdline: gnome-shell --sm-client-id 
102c52716a25d9b2dd1495780366603150001329
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f9bec254d5c 
:  movzbl 0x14(%rax),%edx
   PC (0x7f9bec254d5c) ok
   source "0x14(%rax)" (0x20706f746b736558) not located in a known VMA region 
(needed readable region)!
   destination "%edx" ok
  SegvReason: reading unknown VMA
  Signal: 11SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   st_theme_get_custom_stylesheets () from 
/usr/lib/gnome-shell/libgnome-shell.so
   ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
   ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
  Title: gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

** Description changed:

- https://errors.ubuntu.com/problem/ada10af9bce533d2cce9447f055123b325fd6c1d
  https://errors.ubuntu.com/problem/7db21198c9a21745b60cc46aabafb2b7e636bf95
  
  ---
  
  Todays update had a kernal and   my gnome shell update. Happened when I
  rebooted.  I now have a black screen and no panel. Icons are all that
  shows up on desktop.
  
  ProblemType: CrashDistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.24.2-0ubuntu7
  ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
  Uname: Linux 4.11.0-10-generic x86_64
  ApportVersion: 2.20.5-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon Jul  3 12:46:31 2017
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  ProcCmdline: gnome-shell --sm-client-id 
102c52716a25d9b2dd1495780366603150001329
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f9bec254d5c 
:  movzbl 0x14(%rax),%edx
   PC (0x7f9bec254d5c) ok
   source "0x14(%rax)" (0x20706f746b736558) not located in a known VMA region 
(needed readable region)!
   destination "%edx" ok
  SegvReason: reading unknown VMA
  Signal: 11SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   st_theme_get_custom_stylesheets () from 
/usr/lib/gnome-shell/libgnome-shell.so
   ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
   ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
  Title: gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

** Tags added: hirsute impish

** Tags removed: bionic

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags removed: groovy

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags removed: eoan

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

** Description changed:

  https://errors.ubuntu.com/problem/ada10af9bce533d2cce9447f055123b325fd6c1d
  https://errors.ubuntu.com/problem/7db21198c9a21745b60cc46aabafb2b7e636bf95
+ https://errors.ubuntu.com/problem/73a2092e4c2d306d8a8e329a29a0f6ffd9a2dfeb
  
  ---
  
  Todays update had a kernal and   my gnome shell update. Happened when I
  rebooted.  I now have a black screen and no panel. Icons are all that
  shows up on desktop.
  
- ProblemType: Crash
- DistroRelease: Ubuntu 17.10
+ ProblemType: CrashDistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.24.2-0ubuntu7
  ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
  Uname: Linux 4.11.0-10-generic x86_64
  ApportVersion: 2.20.5-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon Jul  3 12:46:31 2017
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  ProcCmdline: gnome-shell --sm-client-id 
102c52716a25d9b2dd1495780366603150001329
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f9bec254d5c 
:  movzbl 0x14(%rax),%edx
   PC (0x7f9bec254d5c) ok
   source "0x14(%rax)" (0x20706f746b736558) not located in a known VMA region 
(needed readable region)!
   destination "%edx" ok
  SegvReason: reading unknown VMA
- Signal: 11
- SourcePackage: gnome-shell
+ Signal: 11SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   st_theme_get_custom_stylesheets () from 
/usr/lib/gnome-shell/libgnome-shell.so
   ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
   ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
  Title: gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[El jinete sin cabeza]

** Tags added: groovy

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Description changed:

  https://errors.ubuntu.com/problem/ada10af9bce533d2cce9447f055123b325fd6c1d
+ https://errors.ubuntu.com/problem/7db21198c9a21745b60cc46aabafb2b7e636bf95
  
  ---
  
  Todays update had a kernal and   my gnome shell update. Happened when I
  rebooted.  I now have a black screen and no panel. Icons are all that
  shows up on desktop.
  
  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.24.2-0ubuntu7
  ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
  Uname: Linux 4.11.0-10-generic x86_64
  ApportVersion: 2.20.5-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon Jul  3 12:46:31 2017
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  ProcCmdline: gnome-shell --sm-client-id 
102c52716a25d9b2dd1495780366603150001329
  ProcEnviron:
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SegvAnalysis:
   Segfault happened at: 0x7f9bec254d5c 
:  movzbl 0x14(%rax),%edx
   PC (0x7f9bec254d5c) ok
   source "0x14(%rax)" (0x20706f746b736558) not located in a known VMA region 
(needed readable region)!
   destination "%edx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
   g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
   st_theme_get_custom_stylesheets () from 
/usr/lib/gnome-shell/libgnome-shell.so
   ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
   ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
  Title: gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

** Tags added: focal

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags removed: disco

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

Ben, sorry I didn't notice your comment

Well, best way would be to have at least some JS logging, while I'm
quite sure when this happen, I'd like to have a trace: so please follow
what said into https://is.gd/wiki_gnome_shell_crash_debug

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags removed: cosmic

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags added: disco eoan

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Ben Klein]

I'm on 19.04 and I seem to be able to reproduce this at least once a day
while I leave my screen locked overnight.

Am willing to provide logs and core dumps if possible.

Just let me know how/what you need to capture.

Each morning when I log back in, the screen will sit and freeze for a
minute or so while gnome shell crashes and restarts, but at least it
keeps my windows and workspaces open / in place. A bit after that is
when apport gives me the dialog.

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Bug Watch Updater]

** Changed in: gnome-shell
   Status: Unknown => New

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

** Changed in: gnome-shell (Ubuntu)
 Assignee: (unassigned) => Marco Trevisan (Treviño) (3v1n0)

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

** Bug watch added: gitlab.gnome.org/GNOME/gnome-shell/issues #1265
   https://gitlab.gnome.org/GNOME/gnome-shell/issues/1265

** Also affects: gnome-shell via
   https://gitlab.gnome.org/GNOME/gnome-shell/issues/1265
   Importance: Unknown
   Status: Unknown

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

Similar issues in other distros:
 - https://bugzilla.redhat.com/show_bug.cgi?id=1494586
 - https://bugzilla.redhat.com/show_bug.cgi?id=1511704
 - https://bugs.centos.org/view.php?id=15970

** Bug watch added: Red Hat Bugzilla #1494586
   https://bugzilla.redhat.com/show_bug.cgi?id=1494586

** Bug watch added: Red Hat Bugzilla #1511704
   https://bugzilla.redhat.com/show_bug.cgi?id=1511704

** Bug watch added: bugs.centos.org/ #15970
   https://bugs.centos.org/view.php?id=15970

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

Actually not... I misread the title.

** Tags removed: fixed-3.32.1 fixed-upstream

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  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

This is going to be fixed by https://gitlab.gnome.org/GNOME/gnome-
shell/merge_requests/438

** Tags added: fixed-3.32.1 fixed-upstream

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags removed: artful

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags added: cosmic

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

I agree, it's just quite hard to reproduce.

I've debugged it for a while, but really I don't see anything wrong in
st related to this. I'd need a core dump to be able to interact with gdb
better.

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

It would be better if this bug did not expire. It is confirmed by almost
3000 crash reports from 18.04/18.10 on errors.ubuntu.com.

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

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

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

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

** Tags added: bionic

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Treviño]

Anyone affected here who can provide a full jouralctl log?

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Daniel van Vugt]

Tracking in:
https://errors.ubuntu.com/problem/ada10af9bce533d2cce9447f055123b325fd6c1d

** Description changed:

+ https://errors.ubuntu.com/problem/ada10af9bce533d2cce9447f055123b325fd6c1d
+ 
+ ---
+ 
  Todays update had a kernal and   my gnome shell update. Happened when I
  rebooted.  I now have a black screen and no panel. Icons are all that
  shows up on desktop.
  
  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: gnome-shell 3.24.2-0ubuntu7
  ProcVersionSignature: Ubuntu 4.11.0-10.15-generic 4.11.8
  Uname: Linux 4.11.0-10-generic x86_64
  ApportVersion: 2.20.5-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon Jul  3 12:46:31 2017
  DisplayManager: gdm3
  ExecutablePath: /usr/bin/gnome-shell
  ProcCmdline: gnome-shell --sm-client-id 
102c52716a25d9b2dd1495780366603150001329
  ProcEnviron:
-  PATH=(custom, no user)
-  XDG_RUNTIME_DIR=
-  LANG=en_US.UTF-8
-  SHELL=/bin/bash
+  PATH=(custom, no user)
+  XDG_RUNTIME_DIR=
+  LANG=en_US.UTF-8
+  SHELL=/bin/bash
  SegvAnalysis:
-  Segfault happened at: 0x7f9bec254d5c 
:  movzbl 0x14(%rax),%edx
-  PC (0x7f9bec254d5c) ok
-  source "0x14(%rax)" (0x20706f746b736558) not located in a known VMA region 
(needed readable region)!
-  destination "%edx" ok
+  Segfault happened at: 0x7f9bec254d5c 
:  movzbl 0x14(%rax),%edx
+  PC (0x7f9bec254d5c) ok
+  source "0x14(%rax)" (0x20706f746b736558) not located in a known VMA region 
(needed readable region)!
+  destination "%edx" ok
  SegvReason: reading unknown VMA
  Signal: 11
  SourcePackage: gnome-shell
  StacktraceTop:
-  g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
-  g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
-  st_theme_get_custom_stylesheets () from 
/usr/lib/gnome-shell/libgnome-shell.so
-  ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
-  ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
+  g_type_check_instance_is_fundamentally_a () from 
/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
+  g_object_ref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
+  st_theme_get_custom_stylesheets () from 
/usr/lib/gnome-shell/libgnome-shell.so
+  ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
+  ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
  Title: gnome-shell crashed with SIGSEGV in 
g_type_check_instance_is_fundamentally_a()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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[Bug 1702151] Re: gnome-shell crashed with SIGSEGV in g_type_check_instance_is_fundamentally_a() from g_object_ref() from st_theme_get_custom_stylesheets()

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

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

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Title:
  gnome-shell crashed with SIGSEGV in
  g_type_check_instance_is_fundamentally_a() from g_object_ref() from
  st_theme_get_custom_stylesheets()

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