syzbot

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BUG: KCSAN: data-race in evdev_pass_values / evdev_poll

write to 0xffff888103dba808 of 4 bytes by task 8916 on cpu 0:
 __pass_event drivers/input/evdev.c:239 [inline]
 evdev_pass_values+0x3ac/0x510 drivers/input/evdev.c:278
 evdev_events+0x90/0xd0 drivers/input/evdev.c:306
 input_to_handler drivers/input/input.c:129 [inline]
 input_pass_values+0x309/0x790 drivers/input/input.c:161
 input_event_dispose+0x251/0x320 drivers/input/input.c:378
 input_handle_event+0xac4/0xb00 drivers/input/input.c:406
 input_inject_event+0xd1/0x100 drivers/input/input.c:465
 evdev_write+0x334/0x420 drivers/input/evdev.c:530
 vfs_write+0x28b/0x8e0 fs/read_write.c:588
 ksys_write+0xeb/0x1b0 fs/read_write.c:643
 __do_sys_write fs/read_write.c:655 [inline]
 __se_sys_write fs/read_write.c:652 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:652
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x72/0x7a

read to 0xffff888103dba808 of 4 bytes by task 2765 on cpu 1:
 evdev_poll+0xe4/0x120 drivers/input/evdev.c:623
 vfs_poll include/linux/poll.h:84 [inline]
 do_select+0x959/0xfa0 fs/select.c:538
 core_sys_select+0x362/0x530 fs/select.c:681
 do_pselect fs/select.c:763 [inline]
 __do_sys_pselect6 fs/select.c:804 [inline]
 __se_sys_pselect6+0x213/0x280 fs/select.c:795
 __x64_sys_pselect6+0x78/0x90 fs/select.c:795
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x72/0x7a

value changed: 0x00000007 -> 0x00000009

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 2765 Comm: acpid Tainted: G        W          6.9.0-rc1-syzkaller-00206-g4535e1a4174c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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