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BUG: KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack

write to 0xffff888103585040 of 8 bytes by interrupt on cpu 1:
 ps2_handle_ack+0x1c5/0x330
 atkbd_interrupt+0xbe6/0xd80
 serio_interrupt+0x61/0xe0
 i8042_interrupt+0x3b3/0x780
 __handle_irq_event_percpu+0x91/0x490
 handle_irq_event+0x64/0xf0
 handle_edge_irq+0x17f/0x5a0
 __common_interrupt+0x64/0x100
 common_interrupt+0x49/0xc0
 asm_common_interrupt+0x26/0x40

read to 0xffff888103585040 of 8 bytes by task 3228 on cpu 0:
 ps2_do_sendbyte+0x190/0x380
 __ps2_command+0x353/0x910
 ps2_command+0x54/0x90
 atkbd_event_work+0x2c5/0x300
 process_one_work+0x3e6/0x750
 worker_thread+0x5ef/0xa10
 kthread+0x1ac/0x1e0
 ret_from_fork+0x1f/0x30

value changed: 0x0000000000000001 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3228 Comm: kworker/0:5 Tainted: G        W          6.2.0-rc7-syzkaller-00011-g05ecb680708a-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: events atkbd_event_work
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