Comment # 4 on bug 1201384 from Michal Suchanek

Broken on rpi3 as well

Linux ogama 6.1.3-1-default #1 SMP PREEMPT_DYNAMIC Wed Jan  4 11:03:53 UTC 2023
(a5315fb) aarch64 aarch64 aarch64 GNU/Linux

cat /proc/2267/stack 
[<0>] tty_port_block_til_ready+0x120/0x384
[<0>] tty_port_open+0xc4/0x14c
[<0>] uart_open+0x24/0x40
[<0>] tty_open+0x138/0x6dc
[<0>] chrdev_open+0xc8/0x210
[<0>] do_dentry_open+0x1bc/0x490
[<0>] vfs_open+0x34/0x40
[<0>] path_openat+0xa4c/0x102c
[<0>] do_filp_open+0x88/0x13c
[<0>] do_sys_openat2+0xbc/0x174
[<0>] __arm64_sys_openat+0x6c/0xb0
[<0>] invoke_syscall+0x78/0x100
[<0>] el0_svc_common.constprop.0+0x58/0x190
[<0>] do_el0_svc+0x34/0xd0
[<0>] el0_svc+0x34/0x140
[<0>] el0t_64_sync_handler+0xf4/0x120
[<0>] el0t_64_sync+0x1a0/0x1a4

Note that with upgrade the terminal settings broke which necessitated terminal
reset to fix them which in turn triggers this.