Program received signal SIGSEGV, Segmentation fault.
SDL_UpperBlit_REAL (src=0xb1, srcrect=0x0, dst=0x76c7f30, dstrect=0xbbd4fc0) at /home/shadowm/src/SDL2/SDL/src/video/SDL_surface.c:533
533         if (src->locked || dst->locked) {
(gdb) bt
#0  SDL_UpperBlit_REAL (src=0xb1, srcrect=0x0, dst=0x76c7f30, dstrect=0xbbd4fc0) at /home/shadowm/src/SDL2/SDL/src/video/SDL_surface.c:533
#1  0x0000000000458d11 in sdl_blit (src=..., src_rect=0x0, dst=..., dst_rect=0xbbd4fc0) at src/sdl/utils.hpp:113
#2  0x0000000000d150ea in storyscreen::part_ui::render_floating_images (this=0xba5fe60) at src/storyscreen/render.cpp:385
#3  0x0000000000d15d64 in storyscreen::part_ui::render_story_box (this=0xba5fe60) at src/storyscreen/render.cpp:775
#4  0x0000000000d16a24 in storyscreen::part_ui::show (this=0xba5fe60) at src/storyscreen/render.cpp:978
#5  0x0000000000d0b2d8 in storyscreen::controller::show (this=0x7fffffffaf70, startpos=storyscreen::START_BEGINNING)
    at src/storyscreen/controller.cpp:197
#6  0x00000000006f5f05 in show_story (disp=..., scenario_name="Rooting Out a Mage", story=...) at src/storyscreen/interface.cpp:47
#7  0x0000000000645255 in playsingle_controller::play_scenario (this=0x7fffffffbf40, level=...) at src/playsingle_controller.cpp:211
#8  0x000000000063b23c in campaign_controller::playsingle_scenario (this=0x7fffffffc9a0, end_level=...)
    at src/game_initialization/playcampaign.cpp:198
#9  0x000000000063b734 in campaign_controller::play_game (this=0x7fffffffc9a0) at src/game_initialization/playcampaign.cpp:288
#10 0x00000000004b3944 in game_launcher::launch_game (this=0x1c00ce0, reload=game_launcher::NO_RELOAD_DATA) at src/game_launcher.cpp:1096
#11 0x0000000000428eee in do_gameloop (args=std::vector of length 1, capacity 1 = {...}) at src/wesnoth.cpp:864
#12 0x000000000042992b in main (argc=1, argv=0x7fffffffdf18) at src/wesnoth.cpp:1032