Bug 1581197

Description of problem:
[abrt] plymouth: plymouthd killed by SIGSEGV
reason:         plymouthd killed by SIGSEGV
package:        plymouth-0.8.9-0.28.20140113.el7
pkg_vendor:     Red Hat, Inc.
cmdline:        @usr/sbin/plymouthd --mode=boot --pid-file=/var/run/plymouth/pid --attach-to-session
executable:     /usr/sbin/plymouthd

Core was generated by `@usr/sbin/plymouthd --mode=boot --pid-file=/var/run/plymouth/pid --attach-to-se'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f80179ed82c in ply_boot_splash_update_progress (splash=0x55a86040dbb0) at ply-boot-splash.c:448
448	  if (splash->plugin_interface->on_boot_progress != NULL)
(gdb) bt
#0  0x00007f80179ed82c in ply_boot_splash_update_progress (splash=0x55a86040dbb0) at ply-boot-splash.c:448
#1  0x00007f8017bfc632 in ply_event_loop_handle_timeouts (loop=0x55a860402150) at ply-event-loop.c:1234
#2  ply_event_loop_process_pending_events (loop=loop@entry=0x55a860402150) at ply-event-loop.c:1303
#3  0x00007f8017bfcf90 in ply_event_loop_run (loop=0x55a860402150) at ply-event-loop.c:1368
#4  0x000055a85fab64d5 in main (argc=<optimized out>, argv=<optimized out>) at main.c:2443
(gdb) l
443	    {
444	      percentage = ply_progress_get_percentage(splash->progress);
445	      time = ply_progress_get_time(splash->progress);
446	    }
447	
448	  if (splash->plugin_interface->on_boot_progress != NULL)
449	    splash->plugin_interface->on_boot_progress (splash->plugin,
450	                                                time,
451	                                                percentage);
452	
(gdb) p *splash
$1 = {loop = 0x7f80172c97b8 <main_arena+88>, module_handle = 0x55a860407ef0, plugin_interface = 0x0, plugin = 0x0, mode = PLY_BOOT_SPLASH_MODE_BOOT_UP, boot_buffer = 0x55a860404de0, idle_trigger = 0x0, 
  keyboard = 0x0, pixel_displays = 0x55a86040dc80, text_displays = 0x55a86040dca0, theme_path = 0x55a86040dc40 "\360\334@`\250U", plugin_dir = 0x55a86040dc60 "0\334@`\250U", status = 0x0, 
  progress = 0x55a860407760, idle_handler = 0x0, idle_handler_user_data = 0x0, is_loaded = 0, should_force_text_mode = 0}
(gdb)
(gdb) p splash->plugin_interface
$2 = (const ply_boot_splash_plugin_interface_t *) 0x0
(gdb)

splash->plugin_interface is seen as a NULL pointer.


Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux 7.4
plymouth-0.8.9-0.28.20140113.el7.x86_64

$ lspci | grep -i VGA\ 
00:02.0 VGA compatible controller [0300]: Red Hat, Inc. QXL paravirtual graphic card [1b36:0100] (rev 04) (prog-if 00 [VGA controller])

How reproducible:
Happened only once and not able to reproduce.

Steps to Reproduce:
1. Plymouthd crashed once at boot.
2.
3.

Actual results:
Apr 24 13:11:25 localhost systemd[1]: Received SIGRTMIN+21 from PID 264 (plymouthd).
Apr 24 13:11:26 localhost abrt-hook-ccpp[1911]: File '/usr/sbin/plymouthd' seems to be deleted
Apr 24 13:11:26 localhost abrt-hook-ccpp[1911]: Process 264 (plymouthd) of user 0 killed by SIGSEGV - dumping core
Apr 24 13:11:26 localhost systemd[1]: plymouth-start.service: main process exited, code=dumped, status=11/SEGV
Apr 24 13:11:26 localhost systemd[1]: Unit plymouth-start.service entered failed state.
Apr 24 13:11:26 localhost systemd[1]: plymouth-start.service failed.
Apr 24 13:11:26 localhost systemd[1]: Started Wait for Plymouth Boot Screen to Quit.

Expected results:
No plymouthd crashes.

Additional info:
This seems to be https://bugs.freedesktop.org/show_bug.cgi?id=91590