================================================================== BUG: KCSAN: data-race in __ps2_command / ps2_handle_response write to 0xffff88812d1f5250 of 8 bytes by interrupt on cpu 0: ps2_handle_response+0x98/0x140 drivers/input/serio/libps2.c:466 psmouse_interrupt+0x6d4/0x930 drivers/input/mouse/psmouse-base.c:369 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 kcsan_setup_watchpoint+0x8b/0x3e0 kernel/kcsan/core.c:437 virtqueue_detach_unused_buf_split drivers/virtio/virtio_ring.c:827 [inline] virtqueue_detach_unused_buf+0xd8/0x1f0 drivers/virtio/virtio_ring.c:2026 free_unused_bufs drivers/net/virtio_net.c:2742 [inline] remove_vq_common+0x469/0x980 drivers/net/virtio_net.c:3247 virtnet_freeze+0x3c7/0x3f0 drivers/net/virtio_net.c:3280 virtio_device_freeze+0xb8/0xe0 drivers/virtio/virtio.c:398 virtio_pci_freeze+0x1c/0x50 drivers/virtio/virtio_pci_common.c:466 pci_pm_suspend+0x1b8/0x3a0 drivers/pci/pci-driver.c:766 dpm_run_callback drivers/base/power/main.c:490 [inline] __device_suspend+0x647/0xfb0 drivers/base/power/main.c:1689 async_suspend+0x2b/0x1c0 drivers/base/power/main.c:1718 async_run_entry_fn+0x4a/0x170 kernel/async.c:127 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 read to 0xffff88812d1f5250 of 8 bytes by task 4921 on cpu 1: __ps2_command+0x39d/0xa40 drivers/input/serio/libps2.c:285 ps2_command+0x51/0x90 drivers/input/serio/libps2.c:332 ps2pp_detect+0x8f/0x900 drivers/input/mouse/logips2pp.c:372 psmouse_do_detect drivers/input/mouse/psmouse-base.c:1009 [inline] psmouse_try_protocol drivers/input/mouse/psmouse-base.c:1023 [inline] psmouse_extensions+0x1761/0x1790 drivers/input/mouse/psmouse-base.c:1183 __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: 0x0000000000000006 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4921 Comm: kworker/1:5 Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_long serio_handle_event ================================================================== ================================================================== BUG: KCSAN: data-race in __ps2_command / ps2_handle_response write to 0xffff88812d1f5250 of 8 bytes by interrupt on cpu 0: ps2_handle_response+0x98/0x140 drivers/input/serio/libps2.c:466 psmouse_interrupt+0x6d4/0x930 drivers/input/mouse/psmouse-base.c:369 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_kcov_mode kernel/kcov.c:163 [inline] write_comp_data kernel/kcov.c:218 [inline] __sanitizer_cov_trace_const_cmp4+0x2b/0xa0 kernel/kcov.c:284 __device_suspend+0x47/0xfb0 drivers/base/power/main.c:1598 device_suspend drivers/base/power/main.c:1732 [inline] dpm_suspend+0x16a/0x7a0 drivers/base/power/main.c:1759 dpm_suspend_start+0xcf/0x230 drivers/base/power/main.c:1933 suspend_devices_and_enter+0x180/0x500 kernel/power/suspend.c:495 enter_state+0x274/0x530 kernel/power/suspend.c:586 pm_suspend+0x4b/0x130 kernel/power/suspend.c:613 state_store+0x1f2/0x210 kernel/power/main.c:658 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 0xffff88812d1f5250 of 8 bytes by task 4921 on cpu 1: __ps2_command+0x411/0xa40 drivers/input/serio/libps2.c:285 ps2_command+0x51/0x90 drivers/input/serio/libps2.c:332 psmouse_reset drivers/input/mouse/psmouse-base.c:440 [inline] __psmouse_reconnect+0x211/0x620 drivers/input/mouse/psmouse-base.c:1723 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: 0x0000000000000006 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4921 Comm: kworker/1:5 Not tainted 5.13.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_long serio_handle_event ==================================================================