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BUG: KCSAN: data-race in cypress_send_ext_cmd / psmouse_interrupt

write to 0xffff888102a538e1 of 1 bytes by interrupt on cpu 0:
 psmouse_interrupt+0x33c/0x930 drivers/input/mouse/psmouse-base.c:387
 serio_interrupt+0x5d/0xe0 drivers/input/serio/serio.c:1002
 i8042_interrupt+0x39e/0x720 drivers/input/serio/i8042.c:602
 __handle_irq_event_percpu+0x93/0x3f0 kernel/irq/handle.c:156
 handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
 handle_irq_event+0xb0/0x160 kernel/irq/handle.c:213
 handle_edge_irq+0x17e/0x600 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+0x38/0xb0 arch/x86/kernel/irq.c:250
 common_interrupt+0x73/0x90 arch/x86/kernel/irq.c:240
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:638
 check_access kernel/kcsan/core.c:623 [inline]
 __tsan_unaligned_write8+0x161/0x190 kernel/kcsan/core.c:834
 memory_bm_find_bit+0x2d0/0x330 kernel/power/snapshot.c:800
 memory_bm_set_bit kernel/power/snapshot.c:812 [inline]
 preallocate_image_pages kernel/power/snapshot.c:1572 [inline]
 preallocate_image_memory+0x18a/0x250 kernel/power/snapshot.c:1596
 hibernate_preallocate_memory+0xb1a/0xb60 kernel/power/snapshot.c:1802
 hibernation_snapshot+0x86/0x3a0 kernel/power/hibernate.c:374
 hibernate+0x156/0x490 kernel/power/hibernate.c:742
 state_store+0x1ba/0x210 kernel/power/main.c:660
 kobj_attr_store+0x40/0x60 lib/kobject.c:856
 sysfs_kf_write+0xa6/0xc0 fs/sysfs/file.c:139
 kernfs_fop_write_iter+0x1d3/0x2d0 fs/kernfs/file.c:296
 call_write_iter include/linux/fs.h:2114 [inline]
 do_iter_readv_writev+0x2cb/0x360 fs/read_write.c:740
 do_iter_write+0x112/0x4c0 fs/read_write.c:866
 vfs_iter_write+0x4c/0x70 fs/read_write.c:907
 iter_file_splice_write+0x40a/0x750 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0x80/0xa0 fs/splice.c:936
 splice_direct_to_actor+0x345/0x650 fs/splice.c:891
 do_splice_direct+0xf5/0x170 fs/splice.c:979
 do_sendfile+0x773/0xda0 fs/read_write.c:1260
 __do_sys_sendfile64 fs/read_write.c:1319 [inline]
 __se_sys_sendfile64 fs/read_write.c:1311 [inline]
 __x64_sys_sendfile64+0xa9/0x130 fs/read_write.c:1311
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff888102a538e1 of 1 bytes by task 1016 on cpu 1:
 cypress_ps2_read_cmd_status drivers/input/mouse/cypress_ps2.c:120 [inline]
 cypress_send_ext_cmd+0x1f2/0x490 drivers/input/mouse/cypress_ps2.c:189
 cypress_detect+0x32/0x100 drivers/input/mouse/cypress_ps2.c:205
 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1009 [inline]
 psmouse_try_protocol drivers/input/mouse/psmouse-base.c:1023 [inline]
 psmouse_extensions+0xa03/0x1790 drivers/input/mouse/psmouse-base.c:1146
 __psmouse_reconnect+0x31e/0x620 drivers/input/mouse/psmouse-base.c:1728
 psmouse_reconnect+0x13/0x20 drivers/input/mouse/psmouse-base.c:1766
 serio_reconnect_driver drivers/input/serio/serio.c:59 [inline]
 serio_reconnect_port drivers/input/serio/serio.c:588 [inline]
 serio_handle_event+0x6be/0xc20 drivers/input/serio/serio.c:214
 process_one_work+0x3e9/0x8f0 kernel/workqueue.c:2276
 worker_thread+0x636/0xae0 kernel/workqueue.c:2422
 kthread+0x1d0/0x1f0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

value changed: 0x00 -> 0x01

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1016 Comm: kworker/1:3 Not tainted 5.13.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_long serio_handle_event
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