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Client crashes with SEGFAULT since 2.5.0 #893

HorstBort opened this Issue Nov 26, 2018 · 5 comments


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HorstBort commented Nov 26, 2018

Expected behaviour

The client should not SEGFAULT.

Actual behaviour

Client crashes after a few minutes since update to 2.5.0. Happens on two machines running Ubuntu 18.04 with Gnome Flashback. Seems to be triggered by compilation of a large LaTeX document. I have set an ignore list for most LaTeX auxiliary files as well as the underlying .git dir.
Happens with version from ppa as well as AppImage. I have also tried daily build from 2018-11-23.
It seems to be more stable with gdb attached.

Steps to reproduce

  1. Start client
  2. Work on LaTeX document and compile
  3. Repeat 2 until client eventually crashes

Client configuration

Client version:2.5.0-20181111.015125~bionic1

Operating system: Ubuntu 18.04 with Gnome Flashback Session

OS language: English

Qt version used by client package (Linux only, see also Settings dialog):

Client package (From Nextcloud or distro) (Linux only): ppa or AppImage

Installation path of client: /usr/bin/nextcloud

Server configuration

Operating system: Ubuntu 18.04 Server

Web server: Apache

Database: MySQL

PHP version: 7.2.10

Nextcloud version: 14.0.4

Storage backend (external storage): No


Please use Gist ( or a similar code paster for longer

  1. Client logfile:
    gdb backtrace:
    client log:

  2. Web server error log:

  3. Server logfile: nextcloud log (data/nextcloud.log):


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jkolo commented Nov 29, 2018

I have similar problem. Logs from kcrash:


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maxidorius commented Dec 5, 2018

Same problem with AppImage 2.5.0 on Latest Linux Mint 18, while 2.3.3 works. Also tried 2.5.1 in the download folder, but it also fails.


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HorstBort commented Dec 6, 2018

Same problem still with 2.5.1-20181204.111806~bionic1 from ppa.


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Iolaum commented Dec 6, 2018

Client crashes as well in Ubuntu Mate 18.04. Installed from the ppa

$ nextcloud --version
Nextcloud version 2.5.1git
Using Qt 5.9.5, built against Qt 5.9.5
Using 'OpenSSL 1.1.0g  2 Nov 2017'

I 've send more than 3 bug reports through the ubuntu prompt after the client crashed since last Sunday. And even more the weeks before that after the upgrade to 2.5.0

I 've also posted a comment there #838. Problems are probably related.


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bobafetthotmail commented Jan 5, 2019

Same issue on OpenSUSE Tumbleweed and client 2.5.1, while using 2.3.3 from flathub/flatpak repo works fine.

When it starts connecting to my server it crashes after I enter my user and password.

alby@openSUSE-xeon:~> nextcloud
[32554:32623:0105/] CERT_PKIXVerifyCert for failed err=-8179
Received signal 11 <unknown> 000000000000
#0 0x7f319733c0ce <unknown>
#1 0x7f319733af73 <unknown>
#2 0x7f319733c045 <unknown>
#3 0x7f3190556110 <unknown>
#4 0x7f3190d3c583 <unknown>
#5 0x7f31972f068a <unknown>
#6 0x7f31972f084f <unknown>
#7 0x7f3196c8749c <unknown>
#8 0x7f3196c875c5 <unknown>
#9 0x7f3196c87a6f <unknown>
#10 0x7f3196fbe47f <unknown>
#11 0x7f3196fcca6a <unknown>
#12 0x7f3196de9589 <unknown>
#13 0x7f3196de9751 <unknown>
#14 0x7f3196df0337 <unknown>
#15 0x7f3196df0551 <unknown>
#16 0x7f3196dd2191 <unknown>
#17 0x7f3196df4df4 <unknown>
#18 0x7f3196df4f59 <unknown>
#19 0x7f3196ec3f45 <unknown>
#20 0x7f319729ed33 <unknown>
#21 0x7f31972c52da <unknown>
#22 0x7f31972c599f <unknown>
#23 0x7f31972c5b28 <unknown>
#24 0x7f31957029a4 <unknown>
#25 0x7f31910c191b QObject::event()
#26 0x7f3191a88591 QApplicationPrivate::notify_helper()
#27 0x7f3191a8fb50 QApplication::notify()
#28 0x7f3191097359 QCoreApplication::notifyInternal2()
#29 0x7f319109a357 QCoreApplicationPrivate::sendPostedEvents()
#30 0x7f31910ec263 <unknown>
#31 0x7f319c3c6c15 g_main_context_dispatch
#32 0x7f319c3c6fd8 <unknown>
#33 0x7f319c3c706c g_main_context_iteration
#34 0x7f31910eb873 QEventDispatcherGlib::processEvents()
#35 0x7f319109602b QEventLoop::exec()
#36 0x7f319109e192 QCoreApplication::exec()
#37 0x55e4b89ea6bc main
#38 0x7f3190540feb __libc_start_main
#39 0x55e4b89eab7a _start
  r8: 0000000000000001  r9: 0000000000000003 r10: 0000000000000000 r11: 0000000000000000
 r12: 000055e4b96e6330 r13: 000055e4b98420b0 r14: 00007f319a6a1da0 r15: 00007ffd48841f28
  di: 000055e4b98420b0  si: 000055e4b96e6330  bp: 00007ffd48841eb0  bx: 000055e4b98420b0
  dx: 3ff0000000000000  ax: 3ff0000000000000  cx: 000055e4b8d4a020  sp: 00007ffd48841e98
  ip: 00007f3190d3c583 efl: 0000000000010206 cgf: 002b000000000033 erf: 0000000000000000
 trp: 000000000000000d msk: 0000000000000000 cr2: 0000000000000000
[end of stack trace]
Calling _exit(1). Core file will not be generated.
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