Created attachment 7249 fix (see bug desc) Analyzing the coredump I assume this happened due to invalid access to job->thumbnailer. I guess the _thunar_return_if_fail() checks a few lines down should happen earlier. Unfortunately, I don't have a reliable way of reproducing the issue in order to check whether the attached patch is a valid fix. Cheers Daniel
Thanks for the patch and sorry for the late reply ! Looks like these "return_if_fail" checks really are misplaced. So even if this should not fix the SIGSEGV, imo it is a good idea to apply the patch. I will do so for master and xfce-4.12 branch
Daniel Reichelt referenced this bugreport in commit 67102a81fd87d9fc32c6e457fe0a5fc23a97f31d SIGSEGV when thumbnailer is under heavy load after opening many tabs (bug #13756) https://git.xfce.org/xfce/thunar/commit?id=67102a81fd87d9fc32c6e457fe0a5fc23a97f31d
Daniel Reichelt referenced this bugreport in commit 31b96783edc74b9e716ce1c9d63cb0ede0a4300d SIGSEGV when thumbnailer is under heavy load after opening many tabs (bug #13756) https://git.xfce.org/xfce/thunar/commit?id=31b96783edc74b9e716ce1c9d63cb0ede0a4300d