Bug 1525499
| Summary: | gnome-shell segfaults in g_type_check_instance_cast() from st_label_set_text() | ||||||||||
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| Product: | Red Hat Enterprise Linux 7 | Reporter: | Matěj Cepl <mcepl> | ||||||||
| Component: | gnome-shell | Assignee: | Florian Müllner <fmuellner> | ||||||||
| Status: | CLOSED ERRATA | QA Contact: | Desktop QE <desktop-qa-list> | ||||||||
| Severity: | unspecified | Docs Contact: | |||||||||
| Priority: | unspecified | ||||||||||
| Version: | 7.5 | CC: | klember, lmiksik, mcepl, ofourdan, tpelka | ||||||||
| Target Milestone: | rc | ||||||||||
| Target Release: | --- | ||||||||||
| Hardware: | x86_64 | ||||||||||
| OS: | Unspecified | ||||||||||
| Whiteboard: | abrt_hash:17c2b611b4c771b2d1160cbbc46c8b8493acbdb5 | ||||||||||
| Fixed In Version: | gjs-1.50.4-1.el7 mutter-3.26.2-7.el7 | Doc Type: | If docs needed, set a value | ||||||||
| Doc Text: | Story Points: | --- | |||||||||
| Clone Of: | Environment: | ||||||||||
| Last Closed: | 2018-04-10 13:08:48 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: | |||||||||||
| Bug Depends On: | 1517890 | ||||||||||
| Bug Blocks: | |||||||||||
| Attachments: |
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Description
Matěj Cepl
2017-12-13 12:51:21 UTC
Created attachment 1367329 [details]
File: backtrace
This is simply Xwayland telling your Wayland compositor (namely gnome-shell/mutter) has died. Basically, gnome-shell (now) runs Xwayland with “-core” which means that *any* FatalError() in Xwayland will dump a core file. xwl_read_events() triggers a FatalError() because the Wayland socket is unusable, and it's unusable because the Wayland compositor (the other side of the socket) has died, i.e. crashed most likely. The Wayland compositor is gnome-shell/mutter, so if you could please look into journalctl and coredumpctl to find a backtrace and/or generate one with coredumpctl and gdb. (In reply to Tomas Pelka from comment #3) > Most probably dup of bz1516408 Matěj said on irc he's using mutter-3.26.2-6 which contanis the fix for bug 1516408, so it's a different issue. We'll need the backtrace of gnome-shell for sure. Created attachment 1367436 [details]
output of journalctl -xb
coredumpctl is completely silent. Also: core.13028: ELF 64-bit LSB core file x86-64, version 1 (SYSV), too many program header sections (2128) core.13323: ELF 64-bit LSB core file x86-64, version 1 (SYSV), SVR4-style, from '/usr/bin/Xwayland :1 -rootless -terminate -core -listen 4 -listen 5 -displayfd', real uid: 1000, effective uid: 1000, real gid: 1000, effective gid: 1000, execfn: '/usr/bin/Xwayland', platform: 'x86_64' The second coredump is apparently the one we have backtrace from, but the other one is a myster (it has 1.1G, so it is by far not empty). From attachment 1367436 [details] :
Dec 13 13:27:50 mitmanek.ceplovi.cz kernel: traps: gnome-shell[13028] general protection ip:7f1d1f8f8bc0 sp:7fff91fcb1e0 error:0 in libgobject-2.0.so.0.5400.2[7f1d1f8c6000+4f000]
Dec 13 13:27:50 mitmanek.ceplovi.cz abrt-hook-ccpp[19713]: Process 13028 (gnome-shell) of user 1000 killed by SIGSEGV - dumping core
Dec 13 13:27:59 mitmanek.ceplovi.cz abrt-hook-ccpp[19713]: /var/spool/abrt is 5076597800 bytes (more than 1279MiB), deleting 'ccpp-2017-12-13-13:23:24-17860'
Dec 13 13:27:59 mitmanek.ceplovi.cz abrt-server[19742]: Package 'gnome-shell' isn't signed with proper key
Unfortunately, that doesn't tell us much on the root cause of the crash...
Created attachment 1367491 [details]
backtrace
Actually, gdb was able to decipher the other coredump and it was truly from gnome-shell.
Oh right! This seems to come from the JS part of gnome-shell, moving to gnome-shell then (apparently unrelated to Wayland). Backtrace is similar to https://bugzilla.gnome.org/show_bug.cgi?id=788931 (In reply to Olivier Fourdan from comment #11) > Backtrace is similar to https://bugzilla.gnome.org/show_bug.cgi?id=788931 gjs 1.50.4 should have fixes to avoid crashing in this case. I'd like to get the update into 7.5; it's a minor bug fix release that should help with several gnome-shell crashes. lmiksik, could you provide pm_ack and exception+ for this, please? gjs-1.50.4-1.el7 should fix the crash and turn it into a warning in system logs. We should still try to get the gnome-shell fix in though, if possible. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2018:0770 |