Bugzilla – Bug 904525
plasma-desktom: Random crashes with SIGBUS
Last modified: 2014-12-03 18:20:40 UTC
When running KDE, sometimes plasma-desktop crashes with signal 7, SIGBUS.
The crashes appear random and after a couple of hours of running KDE. When the crash occurs, restarting plasma-desktop does not work, keeps crashing over and over again. Best fix right now: restart KDE.
No special actions preceding the crash.
This could be a kernel issue with btrfs, which is supposed to be fixed in 3.17.2. More information at the KDE bug https://bugs.kde.org/show_bug.cgi?id=340657
You are at least right that I am running on btrfs... did the same on 13.1 with same issue :)
Thanks for the follow-up and pointer to the other bug report, will update my findings when the 3.17.2 kernel hits Tumbleweed.
This just happened to me on a fresh suse 13.2 install; it crashed, and then on every login;
update to kernel 3.16.7 from Kernel:/openSUSE-13.2 got me back in working mode.
let's watch what our kernel masters will say ;-)
*** This bug has been marked as a duplicate of bug 905832 ***
For the record, the crash is not caused by btrfs. The applications crash when using string functions that are implemented using the SSE instructions.
David, then it would be SIGILL (illegal instruction), not SIGBUS (bus error). The crash is caused by a bug in btrfs not correctly handling mappings of sparse files. We also get this crash on 64 bit systems, which certainly handle all SSE instructions.