[Bug 2061954] Re: filezilla crashed with SIGABRT in start_thread()

Fri May 24 22:03:18 UTC 2024

I also fixed the bug reference in the changelog, and feel free to modify
the test plan if you don't agree with my changes.

Sponsored for noble, thanks for the debdiff!

Uploading libfilezilla_0.46.0-3.1ubuntu0.1.dsc
Uploading libfilezilla_0.46.0-3.1ubuntu0.1.debian.tar.xz
Uploading libfilezilla_0.46.0-3.1ubuntu0.1_source.buildinfo
Uploading libfilezilla_0.46.0-3.1ubuntu0.1_source.changes

** Description changed:

  [ Impact ]

  File reading is not correctly performed and leaves the dependent package
  filezilla in a state where uploading of files causes error and crashes the
  application.

  [ Test Plan ]

  This test needs a graphical environment, so a VM is best. The
  instructions below assume such an environment for testing is at hand.
+ You can quickly get such a VM with noble desktop preinstalled with LXD:

+ lxc launch images:ubuntu/noble/desktop --vm -c limits.memory=3GiB
+ n-filezilla --console=vga

  * Create vanilla[1] Virtual Machines (VMs) - Ubuntu 24.04.

  * set a password for the ubuntu user, or some other user to test:

-   sudo passwd ubuntu
+   sudo passwd ubuntu

  * Install vsftpd and filezilla:

  sudo apt install vsftpd filezilla

  * Change configuration to allow uploads: change write_enable to YES in
  /etc/vsftpd.conf

  * restart vsftpd
  sudo systemctl restart vsftpd

  * create a simple file to upload in the home directory of the test user
  (ubuntu in this example)

  echo "Hello from ftp client" > /home/ubuntu/hello.txt

  To test the fix or reproduce the bug, launch filezilla as a user, and
  connect to localhost using the password specified earlier. It's best to
  launch it from a terminal:

-   filezilla ftp://ubuntu@localhost
+   filezilla ftp://ubuntu@localhost

  Use filezilla to upload the "hello.txt" file to the Desktop folder on
  the "remote" server (which is the same machine).

  With the bug, filezilla will crash as soon as the upload finishes, with an error like below:
  (...)
  wxD-Bus: CPowerManagementInhibitor: Request successful, cookie is 866151098
  wxD-Bus: CPowerManagementInhibitor: Requesting idle
  wxD-Bus: Reply with serial 8
  wxD-Bus: CPowerManagementInhibitor: Request successful
  wxD-Bus: CPowerManagementInhibitor: Requesting busy
  wxD-Bus: Reply with serial 9
  wxD-Bus: CPowerManagementInhibitor: Request successful, cookie is 1438183114
  Aborted (core dumped)

- 
- With the fixed packages, the upload will finish normally and filezilla will not crash.
- 
+ With the fixed packages, the upload will finish normally and filezilla
+ will not crash.

  [ Where problems could occur ]

  The patch allows for correct operation by changing the IO behaviour and alters
  no other operation of the application. The patch has negligible risk for the users of this library and the dependent package filezilla.

  Only filezilla consumes this library and there is no risk to any other
  library/application.

  [ Other Info ]

  None.

  [1] These are installations that have only Ubuntu repositories and no
  applications installed other than the default install ones and the
  package being test.

  [ Original Description ]

  filezilla crashes (core dump) while transferring file(s) when connected
  via SFTP.

  ProblemType: Crash
  DistroRelease: Ubuntu 24.04
  Package: filezilla 3.66.5-2build2
  ProcVersionSignature: Ubuntu 6.8.0-22.22-generic 6.8.1
  Uname: Linux 6.8.0-22-generic x86_64
  ApportVersion: 2.28.0-0ubuntu1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashCounter: 1
  CurrentDesktop: XFCE
  Date: Wed Apr 17 07:32:30 2024
  ExecutablePath: /usr/bin/filezilla
  InstallationDate: Installed on 2024-04-17 (0 days ago)
  InstallationMedia: Xubuntu 24.04 LTS "Noble Numbat" - Beta amd64 (20240417)
  JournalErrors: -- No entries --
  ProcCmdline: filezilla
  Signal: 6
  SignalName: SIGABRT
  SourcePackage: filezilla
  StacktraceTop:
   ?? () from /lib/x86_64-linux-gnu/libfilezilla.so.42
   ?? () from /lib/x86_64-linux-gnu/libfilezilla.so.42
   ?? () from /lib/x86_64-linux-gnu/libfilezilla.so.42
   ?? () from /lib/x86_64-linux-gnu/libstdc++.so.6
   start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
  Title: filezilla crashed with SIGABRT in start_thread()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sudo users
  separator:

-- 
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https://bugs.launchpad.net/bugs/2061954

Title:
  filezilla crashed with SIGABRT in start_thread()

Status in libfilezilla package in Ubuntu:
  Fix Released
Status in libfilezilla source package in Noble:
  New
Status in libfilezilla source package in Oracular:
  Fix Released

Bug description:
  [ Impact ]

  File reading is not correctly performed and leaves the dependent package
  filezilla in a state where uploading of files causes error and crashes the
  application.

  [ Test Plan ]

  This test needs a graphical environment, so a VM is best. The
  instructions below assume such an environment for testing is at hand.
  You can quickly get such a VM with noble desktop preinstalled with
  LXD:

  lxc launch images:ubuntu/noble/desktop --vm -c limits.memory=3GiB
  n-filezilla --console=vga

  * Create vanilla[1] Virtual Machines (VMs) - Ubuntu 24.04.

  * set a password for the ubuntu user, or some other user to test:

    sudo passwd ubuntu

  * Install vsftpd and filezilla:

  sudo apt install vsftpd filezilla

  * Change configuration to allow uploads: change write_enable to YES in
  /etc/vsftpd.conf

  * restart vsftpd
  sudo systemctl restart vsftpd

  * create a simple file to upload in the home directory of the test
  user (ubuntu in this example)

  echo "Hello from ftp client" > /home/ubuntu/hello.txt

  To test the fix or reproduce the bug, launch filezilla as a user, and
  connect to localhost using the password specified earlier. It's best
  to launch it from a terminal:

    filezilla ftp://ubuntu@localhost

  Use filezilla to upload the "hello.txt" file to the Desktop folder on
  the "remote" server (which is the same machine).

  With the bug, filezilla will crash as soon as the upload finishes, with an error like below:
  (...)
  wxD-Bus: CPowerManagementInhibitor: Request successful, cookie is 866151098
  wxD-Bus: CPowerManagementInhibitor: Requesting idle
  wxD-Bus: Reply with serial 8
  wxD-Bus: CPowerManagementInhibitor: Request successful
  wxD-Bus: CPowerManagementInhibitor: Requesting busy
  wxD-Bus: Reply with serial 9
  wxD-Bus: CPowerManagementInhibitor: Request successful, cookie is 1438183114
  Aborted (core dumped)

  With the fixed packages, the upload will finish normally and filezilla
  will not crash.

  [ Where problems could occur ]

  The patch allows for correct operation by changing the IO behaviour and alters
  no other operation of the application. The patch has negligible risk for the users of this library and the dependent package filezilla.

  Only filezilla consumes this library and there is no risk to any other
  library/application.

  [ Other Info ]

  None.

  [1] These are installations that have only Ubuntu repositories and no
  applications installed other than the default install ones and the
  package being test.

  [ Original Description ]

  filezilla crashes (core dump) while transferring file(s) when
  connected via SFTP.

  ProblemType: Crash
  DistroRelease: Ubuntu 24.04
  Package: filezilla 3.66.5-2build2
  ProcVersionSignature: Ubuntu 6.8.0-22.22-generic 6.8.1
  Uname: Linux 6.8.0-22-generic x86_64
  ApportVersion: 2.28.0-0ubuntu1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CrashCounter: 1
  CurrentDesktop: XFCE
  Date: Wed Apr 17 07:32:30 2024
  ExecutablePath: /usr/bin/filezilla
  InstallationDate: Installed on 2024-04-17 (0 days ago)
  InstallationMedia: Xubuntu 24.04 LTS "Noble Numbat" - Beta amd64 (20240417)
  JournalErrors: -- No entries --
  ProcCmdline: filezilla
  Signal: 6
  SignalName: SIGABRT
  SourcePackage: filezilla
  StacktraceTop:
   ?? () from /lib/x86_64-linux-gnu/libfilezilla.so.42
   ?? () from /lib/x86_64-linux-gnu/libfilezilla.so.42
   ?? () from /lib/x86_64-linux-gnu/libfilezilla.so.42
   ?? () from /lib/x86_64-linux-gnu/libstdc++.so.6
   start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
  Title: filezilla crashed with SIGABRT in start_thread()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sudo users
  separator:

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