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BUG: KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack

write to 0xffff88810328f840 of 8 bytes by interrupt on cpu 1:
 ps2_handle_ack+0x1b3/0x320 drivers/input/serio/libps2.c:447
 atkbd_interrupt+0xa5b/0xc30 drivers/input/keyboard/atkbd.c:424
 serio_interrupt+0x5d/0xe0 drivers/input/serio/serio.c:998
 i8042_interrupt+0x380/0x710 drivers/input/serio/i8042.c:606
 __handle_irq_event_percpu+0x92/0x400 kernel/irq/handle.c:158
 handle_irq_event_percpu kernel/irq/handle.c:193 [inline]
 handle_irq_event+0x60/0xf0 kernel/irq/handle.c:210
 handle_edge_irq+0x17e/0x5a0 kernel/irq/chip.c:819
 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
 handle_irq arch/x86/kernel/irq.c:231 [inline]
 __common_interrupt+0x60/0x100 arch/x86/kernel/irq.c:250
 common_interrupt+0x9a/0xc0 arch/x86/kernel/irq.c:240
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:640
 arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
 arch_atomic_long_read include/linux/atomic/atomic-long.h:29 [inline]
 atomic_long_read include/linux/atomic/atomic-instrumented.h:1266 [inline]
 find_watchpoint kernel/kcsan/core.c:131 [inline]
 check_access kernel/kcsan/core.c:728 [inline]
 __tsan_read8+0x28/0x180 kernel/kcsan/core.c:1016
 insert_entry fs/proc/proc_sysctl.c:168 [inline]
 insert_header+0x5ba/0x8e0 fs/proc/proc_sysctl.c:252
 __register_sysctl_table+0xc77/0xce0 fs/proc/proc_sysctl.c:1372
 register_net_sysctl+0x1b1/0x1c0 net/sysctl_net.c:169
 __addrconf_sysctl_register+0x1bc/0x2b0 net/ipv6/addrconf.c:7083
 addrconf_sysctl_register+0xd8/0x110 net/ipv6/addrconf.c:7130
 ipv6_add_dev+0x8c9/0xa90 net/ipv6/addrconf.c:450
 addrconf_notify+0x3a2/0x9b0 net/ipv6/addrconf.c:3528
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0x53/0xb0 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:1944 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:1982 [inline]
 call_netdevice_notifiers+0xb8/0x120 net/core/dev.c:1996
 register_netdevice+0xca3/0xe10 net/core/dev.c:10078
 __ip_tunnel_create+0x1c5/0x260 net/ipv4/ip_tunnel.c:267
 ip_tunnel_init_net+0x18e/0x3d0 net/ipv4/ip_tunnel.c:1073
 erspan_init_net+0x31/0x40 net/ipv4/ip_gre.c:1709
 ops_init+0x201/0x2c0 net/core/net_namespace.c:135
 setup_net+0x39b/0x8e0 net/core/net_namespace.c:333
 copy_net_ns+0x29f/0x450 net/core/net_namespace.c:483
 create_new_namespaces+0x22c/0x450 kernel/nsproxy.c:110
 copy_namespaces+0x149/0x1a0 kernel/nsproxy.c:179
 copy_process+0xda6/0x2090 kernel/fork.c:2269
 kernel_clone+0x166/0x550 kernel/fork.c:2681
 __do_sys_clone kernel/fork.c:2822 [inline]
 __se_sys_clone kernel/fork.c:2806 [inline]
 __x64_sys_clone+0xc3/0xf0 kernel/fork.c:2806
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff88810328f840 of 8 bytes by task 35 on cpu 0:
 ps2_do_sendbyte+0x12e/0x380 drivers/input/serio/libps2.c:46
 __ps2_command+0x35e/0x8c0 drivers/input/serio/libps2.c:274
 ps2_command+0x51/0x90 drivers/input/serio/libps2.c:335
 atkbd_set_repeat_rate drivers/input/keyboard/atkbd.c:585 [inline]
 atkbd_event_work+0x2a8/0x2e0 drivers/input/keyboard/atkbd.c:639
 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289
 worker_thread+0x618/0xa70 kernel/workqueue.c:2436
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x0000000000000001 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 35 Comm: kworker/0:1 Not tainted 6.2.0-rc6-syzkaller-00011-gc0b67534c95c-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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