syzbot

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BUG: KCSAN: data-race in evdev_pass_values / evdev_read

write to 0xffff888103f41008 of 4 bytes by task 23703 on cpu 0:
 __pass_event drivers/input/evdev.c:239 [inline]
 evdev_pass_values+0x3b7/0x510 drivers/input/evdev.c:278
 evdev_events+0x91/0xd0 drivers/input/evdev.c:306
 input_to_handler drivers/input/input.c:126 [inline]
 input_pass_values+0x37a/0x8f0 drivers/input/input.c:156
 input_handle_event+0x8d4/0xd50 drivers/input/input.c:415
 input_inject_event+0xbc/0xe0 drivers/input/input.c:487
 evdev_write+0x326/0x400 drivers/input/evdev.c:530
 vfs_write+0x26d/0x890 fs/read_write.c:589
 ksys_write+0xe8/0x1a0 fs/read_write.c:644
 __do_sys_write fs/read_write.c:656 [inline]
 __se_sys_write fs/read_write.c:653 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:653
 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+0x46/0xb0

read to 0xffff888103f41008 of 4 bytes by task 1426 on cpu 1:
 evdev_read+0x1c5/0x7a0 drivers/input/evdev.c:574
 vfs_read+0x1a1/0x6a0 fs/read_write.c:480
 ksys_read+0xe8/0x1a0 fs/read_write.c:620
 __do_sys_read fs/read_write.c:630 [inline]
 __se_sys_read fs/read_write.c:628 [inline]
 __x64_sys_read+0x3e/0x50 fs/read_write.c:628
 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+0x46/0xb0

value changed: 0x00000022 -> 0x00000024

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 1426 Comm: acpid Not tainted 5.19.0-rc4-syzkaller-00036-gd9b2ba67917c-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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