================================================================== BUG: KCSAN: data-race in cypress_send_ext_cmd / psmouse_interrupt write to 0xffff88812f6176e1 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 do_arch_prctl_64+0x95/0x1c0 arch/x86/kernel/process_64.c:791 set_new_tls arch/x86/kernel/process.c:117 [inline] copy_thread+0x154/0x1f0 arch/x86/kernel/process.c:194 copy_process+0x1415/0x2e00 kernel/fork.c:2125 kernel_clone+0x14b/0x680 kernel/fork.c:2503 __do_sys_clone kernel/fork.c:2620 [inline] __se_sys_clone kernel/fork.c:2604 [inline] __x64_sys_clone+0xb4/0xe0 kernel/fork.c:2604 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88812f6176e1 of 1 bytes by task 10912 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 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 10912 Comm: kworker/1:4 Not tainted 5.13.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_long serio_handle_event ==================================================================