Bug 2254965

Summary: [abrt] epiphany-runtime: trap_handler(): epiphany killed by SIGTRAP
Product: [Fedora] Fedora Reporter: Pierre Ossman <ossman>
Component: at-spi2-coreAssignee: Matthias Clasen <mclasen>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 38CC: gecko-bugs-nobody, gnome-sig, jhorak, mcatanza, mclasen, ossman, philip.wyett, rstrode, tpopela
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Unspecified   
URL: https://retrace.fedoraproject.org/faf/reports/bthash/4ad325d038d68e55251b337994b2ae4747432eb
Whiteboard: abrt_hash:0ff186d1a1b58b302360297ada955b01ec49307f;VARIANT_ID=workstation;
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2024-05-31 09:10:30 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
File: environ
none
File: open_fds
none
File: limits
none
File: os_info
none
File: proc_pid_status
none
File: backtrace
none
File: cpuinfo
none
File: var_log_messages
none
File: mountinfo
none
File: maps
none
File: core_backtrace none

Description Pierre Ossman 2023-12-18 08:34:54 UTC
Description of problem:
Tried to start an Epiphany web app.

Version-Release number of selected component:
epiphany-runtime-1:44.6-1.fc38

Additional info:
reporter:       libreport-2.17.11
backtrace_rating: 4
rootdir:        /
runlevel:       N 5
executable:     /usr/bin/epiphany
cgroup:         0::/user.slice/user-4051.slice/user/app.slice/app-gnome-org.gnome.Epiphany.WebApp_6b1f893805e29582969095a741d60a5f43734af8-2067439.scope
type:           CCpp
dso_list:       /usr/bin/epiphany epiphany-runtime-1:44.6-1.fc38.x86_64 (Fedora Project) 1691998805
uid:            4051
reason:         epiphany killed by SIGTRAP
kernel:         6.6.4-100.fc38.x86_64
crash_function: trap_handler
package:        epiphany-runtime-1:44.6-1.fc38
journald_cursor: s=2c7de5b121464f098a29ca163d211c4a;i=c4952;b=c6ac733c2e464cba9fdf86e2021bbd73;m=72eee6d408;t=60cc46aa1d930;x=ec7c76249d8e395b
comment:        Tried to start an Epiphany web app.
cmdline:        /usr/bin/epiphany --application-mode --profile=/home/ossman/.local/share/org.gnome.Epiphany.WebApp_6b1f893805e29582969095a741d60a5f43734af8 https://cendio.flexhosting.se/Mobile/#startPage

Truncated backtrace:
Thread no. 1 (20 frames)
 #2 trap_handler at ../lib/ephy-debug.c:104
 #5 WebKit::waitUntilSyncedOrDie at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/Launcher/glib/XDGDBusProxy.cpp:180
 #6 WebKit::XDGDBusProxy::launch() at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/Launcher/glib/XDGDBusProxy.cpp:241
 #7 WebKit::bubblewrapSpawn(_GSubprocessLauncher*, WebKit::ProcessLauncher::LaunchOptions const&, char**, _GError**) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/Launcher/glib/BubblewrapLauncher.cpp:902
 #8 WebKit::ProcessLauncher::launchProcess() at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/Launcher/glib/ProcessLauncherGLib.cpp:226
 #9 WebKit::ProcessLauncher::ProcessLauncher(WebKit::ProcessLauncher::Client*, WebKit::ProcessLauncher::LaunchOptions&&) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/Launcher/ProcessLauncher.cpp:45
 #10 WebKit::ProcessLauncher::create(WebKit::ProcessLauncher::Client*, WebKit::ProcessLauncher::LaunchOptions&&) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/Launcher/ProcessLauncher.h:105
 #11 WebKit::AuxiliaryProcessProxy::connect() at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/AuxiliaryProcessProxy.cpp:141
 #12 WebKit::WebProcessProxy::create(WebKit::WebProcessPool&, WebKit::WebsiteDataStore*, WebKit::WebProcessProxy::LockdownMode, WebKit::WebProcessProxy::IsPrewarmed, WebCore::CrossOriginMode, WebKit::WebProcessProxy::ShouldLaunchProcess) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/redhat-linux-build/webkitgtk-6.0/WTF/Headers/wtf/RawPtrTraits.h:44
 #13 WebKit::WebProcessPool::createNewWebProcess(WebKit::WebsiteDataStore*, WebKit::WebProcessProxy::LockdownMode, WebKit::WebProcessProxy::IsPrewarmed, WebCore::CrossOriginMode) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/WebProcessPool.cpp:672
 #14 WebKit::WebProcessPool::processForRegistrableDomain(WebKit::WebsiteDataStore&, WebCore::RegistrableDomain const&, WebKit::WebProcessProxy::LockdownMode) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/WebProcessPool.cpp:1102
 #15 WebKit::WebPageProxy::launchProcess(WebCore::RegistrableDomain const&, WebKit::WebPageProxy::ProcessLaunchReason) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/WebPageProxy.cpp:1018
 #16 WebKit::WebPageProxy::loadRequest(WebCore::ResourceRequest&&, WebCore::ShouldOpenExternalURLsPolicy, API::Object*) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/WebPageProxy.cpp:1605
 #17 WebKit::WebPageProxy::loadRequest(WebCore::ResourceRequest&&) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/WebPageProxy.cpp:1622
 #18 webkit_web_view_load_uri(WebKitWebView*, gchar const*) at /usr/src/debug/webkitgtk-2.42.3-1.fc38.x86_64/Source/WebKit/UIProcess/API/glib/WebKitWebView.cpp:3187
 #19 ephy_web_view_load_url at ../embed/ephy-web-view.c:2601
 #20 ephy_shell_open_uris_idle at ../src/ephy-shell.c:1482
 #24 g_main_context_iterate.isra.0 at ../glib/gmain.c:4276
 #25 g_main_context_iteration at ../glib/gmain.c:4343
 #26 g_application_run at ../gio/gapplication.c:2573

Comment 1 Pierre Ossman 2023-12-18 08:34:57 UTC
Created attachment 2004779 [details]
File: environ

Comment 2 Pierre Ossman 2023-12-18 08:34:59 UTC
Created attachment 2004780 [details]
File: open_fds

Comment 3 Pierre Ossman 2023-12-18 08:35:00 UTC
Created attachment 2004781 [details]
File: limits

Comment 4 Pierre Ossman 2023-12-18 08:35:01 UTC
Created attachment 2004782 [details]
File: os_info

Comment 5 Pierre Ossman 2023-12-18 08:35:03 UTC
Created attachment 2004783 [details]
File: proc_pid_status

Comment 6 Pierre Ossman 2023-12-18 08:35:05 UTC
Created attachment 2004784 [details]
File: backtrace

Comment 7 Pierre Ossman 2023-12-18 08:35:06 UTC
Created attachment 2004785 [details]
File: cpuinfo

Comment 8 Pierre Ossman 2023-12-18 08:35:08 UTC
Created attachment 2004786 [details]
File: var_log_messages

Comment 9 Pierre Ossman 2023-12-18 08:35:10 UTC
Created attachment 2004787 [details]
File: mountinfo

Comment 10 Pierre Ossman 2023-12-18 08:35:11 UTC
Created attachment 2004788 [details]
File: maps

Comment 11 Pierre Ossman 2023-12-18 08:35:13 UTC
Created attachment 2004789 [details]
File: core_backtrace

Comment 12 Michael Catanzaro 2023-12-18 21:25:17 UTC
I see xdg-dbus-proxy exited with status 1, which is bad. Are there no other interesting messages in the system journal? We need to figure out why that is happening.

Comment 13 Michael Catanzaro 2023-12-18 21:52:59 UTC
Presumably this is related to https://gitlab.gnome.org/GNOME/epiphany/-/issues/1780#note_1946293 right?

Comment 14 Pierre Ossman 2023-12-19 08:22:39 UTC
Yes, that was at the same time, so it is a likely cause.

The journal has this to say:

> Dec 18 09:20:00 ossman.lkpg.cendio.se systemd[2645]: Started app-gnome-org.gnome.Epiphany.WebApp_6b1f893805e29582969095a741d60a5f43734af8-2067439.scope - Application launched by gnome-shell.
> Dec 18 09:20:00 ossman.lkpg.cendio.se org.gnome.Epiphany.WebApp_6b1f893805e29582969095a741d60a5f43734af8.desktop[2067515]: bwrap: Can't find source path /root/.cache/at-spi: Permission denied
> Dec 18 09:20:00 ossman.lkpg.cendio.se epiphany[2067439]: Failed to fully launch dbus-proxy: Child process exited with code 1
> Dec 18 09:20:01 ossman.lkpg.cendio.se systemd[2645]: Started app-gnome-org.gnome.Epiphany.WebApp_430b38bf6daa7f9164b164b2ffd540b5a3afe2fd-2067519.scope - Application launched by gnome-shell.
> Dec 18 09:20:01 ossman.lkpg.cendio.se org.gnome.Epiphany.WebApp_430b38bf6daa7f9164b164b2ffd540b5a3afe2fd.desktop[2067599]: bwrap: Can't find source path /root/.cache/at-spi: Permission denied
> Dec 18 09:20:01 ossman.lkpg.cendio.se epiphany[2067519]: Failed to fully launch dbus-proxy: Child process exited with code 1
> Dec 18 09:20:02 ossman.lkpg.cendio.se systemd-coredump[2067517]: [🡕] Process 2067439 (epiphany) of user 4051 dumped core.
> ...

Comment 15 Michael Catanzaro 2023-12-19 15:07:59 UTC
(In reply to Pierre Ossman from comment #14)
> > Dec 18 09:20:01 ossman.lkpg.cendio.se org.gnome.Epiphany.WebApp_430b38bf6daa7f9164b164b2ffd540b5a3afe2fd.desktop[2067599]: bwrap: Can't find source path /root/.cache/at-spi: Permission denied

I think that's coming from:

$ gdbus call --session --dest org.a11y.Bus --object-path /org/a11y/bus --method org.a11y.Bus.GetAddress 

Which is supposed to return something like:

('unix:path=/run/user/1000/at-spi/bus',)

I think that paths under /root should never be returned when calling this method on the session bus, unless perhaps the session bus corresponds to the root user. But in this case, you're not running Epiphany as root, so it's strange to see this result. Maybe we need more safety checks to ensure the a11y bus doesn't get started as root?

I think this should be fatal and I don't think we can do any better error message than what is already printing, so I don't see any need to change WebKit's behavior here.

Comment 16 Pierre Ossman 2023-12-20 10:22:18 UTC
The message was just in a log, so it wasn't terribly helpful as a user, since I got no visible response clicking the Epiphany icon.

Would it be possible to start without accessibility and a warning? I would assume most users would be fine without those features.

Comment 17 Michael Catanzaro 2023-12-20 14:14:25 UTC
No, if the a11y bus socket is not readable, that's a serious error and we should refuse to start. Checking the system journal or running the app in a terminal is just what you need to do when an app fails to start.

Comment 18 Aoife Moloney 2024-05-31 09:10:30 UTC
Fedora Linux 38 entered end-of-life (EOL) status on 2024-05-21.

Fedora Linux 38 is no longer maintained, which means that it
will not receive any further security or bug fix updates. As a result we
are closing this bug.

If you can reproduce this bug against a currently maintained version of Fedora Linux
please feel free to reopen this bug against that version. Note that the version
field may be hidden. Click the "Show advanced fields" button if you do not see
the version field.

If you are unable to reopen this bug, please file a new report against an
active release.

Thank you for reporting this bug and we are sorry it could not be fixed.

Comment 19 Michael Catanzaro 2024-12-03 21:27:48 UTC

*** This bug has been marked as a duplicate of bug 2162351 ***