(gdb) bt
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007ffff66ee42a in __GI_abort () at abort.c:89
#2  0x00007ffff672ac00 in __libc_message (do_abort=do_abort@entry=2, fmt=fmt@entry=0x7ffff681ffd0 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#3  0x00007ffff6730fc6 in malloc_printerr (action=3, str=0x7ffff6820048 "double free or corruption (!prev)", ptr=<optimized out>, ar_ptr=<optimized out>) at malloc.c:5049
#4  0x00007ffff673180e in _int_free (av=0x7ffff6a53b00 <main_arena>, p=0x555555b96e30, have_lock=0) at malloc.c:3905
#5  0x000055555561382c in V_FreeScreen (scrn=<optimized out>) at v_video.c:1215
#6  V_FreeScreens () at v_video.c:1227
#7  0x00005555556328fe in I_InitScreenResolution () at i_video.c:1022
#8  0x0000555555632c0c in I_UpdateVideoMode () at i_video.c:1155
#9  0x0000555555614529 in V_ChangeScreenResolution () at v_video.c:1842
#10 0x00005555555d806d in M_Responder (ev=ev@entry=0x7fffffffe7f0) at m_menu.c:5046
#11 0x00005555555bc75b in D_PostEvent (ev=ev@entry=0x7fffffffe7f0) at d_main.c:201
#12 0x0000555555631eba in I_GetEvent () at i_video.c:295
#13 I_StartTic () at i_video.c:377
#14 0x00005555556187e9 in NetUpdate () at d_client.c:339
#15 0x0000555555618f6f in NetUpdate () at d_client.c:269
#16 0x00005555556066c7 in R_RenderPlayerView (player=0x5555558de700 <players>) at r_main.c:1130
#17 0x00005555555bcb1a in D_Display (frac=<optimized out>) at d_main.c:360
#18 0x00005555555bec9c in D_DoomLoop () at d_main.c:496
#19 D_DoomMain () at d_main.c:1979
#20 0x000055555557b1ba in main (argc=<optimized out>, argv=<optimized out>) at i_main.c:576