SIGABRT after trying to increase font size too much using Ctrl+ #271
Description
With both kmscon 9.3.0 and 9.3.1 at least on my Framework 13 with the 2256x1504 display and Intel Arc integrated graphics (part of the Intel Core Ultra 5 125H), running Arch Linux, after repeatedly pressing Ctrl + too often kmscon crashes with SIGABRT. coredumpctl gdb gives me the following output:
Thread 2 (Thread 0x7fc46af686c0 (LWP 2371)):
#0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1 0x00007fc46b81382e in g_cond_wait_impl (cond=0x55d134bf35b8, mutex=0x55d134bf35b0) at ../glib/glib/gthread-posix.c:1026
#2 g_cond_wait (cond=0x55d134bf35b8, mutex=0x55d134bf35b0) at ../glib/glib/gthread.c:1686
#3 0x00007fc46b7aa1cd in g_async_queue_pop_intern_unlocked (queue=0x55d134bf35b0, wait=1, end_time=-1) at ../glib/glib/gasyncqueue.c:376
#4 0x00007fc46b7aa23d in g_async_queue_pop (queue=queue@entry=0x55d134bf35b0) at ../glib/glib/gasyncqueue.c:410
#5 0x00007fc46bac351c in fc_thread_func (data=0x55d134bf35b0) at ../pango/pango/pangofc-fontmap.c:997
#6 0x00007fc46b81b8bc in g_thread_proxy (data=0x55d134bf36d0) at ../glib/glib/gthread.c:893
#7 0x00007fc46bca498b in start_thread (arg=<optimized out>) at pthread_create.c:448
#8 0x00007fc46bd28a0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78
Thread 1 (Thread 0x7fc46badc880 (LWP 2349)):
#0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#1 0x00007fc46bca69d3 in __pthread_kill_internal (threadid=<optimized out>, signo=6) at pthread_kill.c:89
#2 0x00007fc46bc4c3a0 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#3 0x00007fc46bc3357a in __GI_abort () at abort.c:77
#4 0x00007fc46bc34613 in __libc_message_impl (fmt=fmt@entry=0x7fc46bdc133d "%s\n") at ../sysdeps/posix/libc_fatal.c:138
#5 0x00007fc46bcb0d25 in malloc_printerr (str=str@entry=0x7fc46bdc4530 "free(): invalid next size (normal)") at malloc.c:5895
#6 0x00007fc46bcb2d0c in _int_free_merge_chunk (av=av@entry=0x7fc46bdf5ac0 <main_arena>, p=0x55d134e92a30, size=5024) at malloc.c:4787
#7 0x00007fc46bcb2f51 in _int_free_chunk (av=0x7fc46bdf5ac0 <main_arena>, p=<optimized out>, size=<optimized out>, have_lock=<optimized out>, have_lock@entry=0) at malloc.c:4729
#8 0x00007fc46bcb5ff4 in __GI___libc_free (mem=<optimized out>) at malloc.c:3571
#9 0x000055d1119f4e0b in bbulk_unset (txt=<optimized out>) at ../kmscon/src/text_bbulk.c:183
#10 0x000055d1119f4e7c in kmscon_text_unset (txt=0x55d134e8aea0) at ../kmscon/src/text.c:300
#11 kmscon_text_unset (txt=txt@entry=0x55d134e8aea0) at ../kmscon/src/text.c:294
#12 0x000055d1119f5042 in kmscon_text_set (txt=0x55d134e8aea0, font=font@entry=0x55d1350f89a0, bold_font=bold_font@entry=0x55d135116500, disp=0x55d134e89e20) at ../kmscon/src/text.c:262
#13 0x000055d1119fc753 in font_set (term=term@entry=0x55d134bf9680) at ../kmscon/src/kmscon_terminal.c:362
#14 0x000055d1119fce9d in input_event (input=<optimized out>, ev=0x55d134e8a418, data=0x55d134bf9680) at ../kmscon/src/kmscon_terminal.c:563
#15 input_event (input=<optimized out>, ev=0x55d134e8a418, data=0x55d134bf9680) at ../kmscon/src/kmscon_terminal.c:522
#16 0x000055d111a0bb9d in shl_hook_call (hook=0x55d134bbd3b0, parent=0x55d134bbd3e0, arg=0x55d134e8a418) at ../kmscon/src/shl_hook.h:216
#17 shl_hook_call (hook=0x55d134bbd3b0, parent=0x55d134bbd3e0, arg=0x55d134e8a418) at ../kmscon/src/shl_hook.h:200
#18 uxkb_dev_process (dev=<optimized out>, key_state=1, code=13) at ../kmscon/src/uterm_input_uxkb.c:491
#19 notify_event (dev=<optimized out>, type=<optimized out>, code=13, value=1) at ../kmscon/src/uterm_input.c:60
#20 input_data_dev (data=<optimized out>, mask=<optimized out>, fd=<optimized out>) at ../kmscon/src/uterm_input.c:104
#21 0x000055d111a043c7 in ev_eloop_dispatch (loop=loop@entry=0x55d134bbab10, timeout=timeout@entry=-1) at ../kmscon/src/eloop.c:854
#22 0x000055d111a04a83 in ev_eloop_run (loop=0x55d134bbab10, timeout=-1) at ../kmscon/src/eloop.c:908
#23 0x000055d1119f379b in main (argc=<optimized out>, argv=<optimized out>) at ../kmscon/src/kmscon_main.c:616
I can reproduce this even when just agetty is running, so before I login in the TTY at all. I also haven't changed any of kmscon's settings, so the file /etc/kmscon/kmscon.conf doesn't exist at all.