[BUG] general protection fault in input_unregister_device

Xianying Wang wangxianying546 at gmail.com
Tue Nov 18 19:51:49 AEDT 2025

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Hi,

I am running syzkaller on a KASAN-enabled x86_64 kernel based on Linux
6.17.0/6.18-rc2, and I hit a reproducible general protection fault in
input_unregister_device() which seems to be triggered by concurrent
writes to the dev.mac_hid.mouse_button_emulation sysctl.

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