https://bugs.kde.org/show_bug.cgi?id=408553
--- Comment #3 from Matt Fagnani <matthew.fagn...@utoronto.ca> --- Created attachment 121409 --> https://bugs.kde.org/attachment.cgi?id=121409&action=edit coredumpctl gdb output of segmentation fault in powerdevil when logging of Plasma on Wayland Thanks Christoph. I think that if the segmentation faults in powerdevil were fixed then the aborts of drkonqi and the restarted powerdevil after the Wayland compositor connection was broken wouldn't happen. I saw another segmentation fault in powerdevil when I logged out of Plasma 5.15.5 on Wayland. sddm didn't show up and the screen stayed blank which I've seen many times before when logging out of Plasma on Wayland. I pressed sysrq+alt+e , sysrq+alt+i which terminated then killed most of the userspace processes. sddm restarted after that. This segmentation fault occurred at about the same time that the screen went blank. coredumpctl gdb showed that tc_victim->fd in _int_malloc at malloc.c:3623 was an inaccessible address. Core was generated by `/usr/libexec/org_kde_powerdevil'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f0d44dcadac in _int_malloc (av=av@entry=0x7f0d2c000020, bytes=bytes@entry=65) at malloc.c:3622 3622 if (SINGLE_THREAD_P) [Current thread is 1 (Thread 0x7f0d33b86700 (LWP 1559))] (gdb) list 3617 3618 /* While bin not empty and tcache not full, copy chunks. */ 3619 while (tcache->counts[tc_idx] < mp_.tcache_count 3620 && (tc_victim = *fb) != NULL) 3621 { 3622 if (SINGLE_THREAD_P) 3623 *fb = tc_victim->fd; 3624 else 3625 { 3626 REMOVE_FB (fb, pp, tc_victim); (gdb) p tc_victim->fd Cannot access memory at address 0xa10000556b (gdb) p tc_victim $2 = (mchunkptr) 0xa10000555b A signal indicating a crash appeared after #13 in tcache_get at malloc.c:2952. KCrash::defaultCrashHandler in #11 showed errors like "Cannot access memory at address 0x7" which might indicate memory corruption. Qt string conversions involving "org.kde.kglobalaccel" happened at #16-19. I've seen many aborts of kglobalaccel5 when logging out of Plasma on Wayland and X as reported at https://bugzilla.redhat.com/show_bug.cgi?id=1701485 I've attached the coredumpctl gdb output of the crash with the full backtrace of all threads etc. I reported this crash in more detail at https://bugzilla.redhat.com/show_bug.cgi?id=1727470 Should I create a new report on bugs.kde.org since the trace is different? -- You are receiving this mail because: You are watching all bug changes.
