================================================================== BUG: KCSAN: data-race in __ps2_command / ps2_interrupt write to 0xffff888103ff1448 of 8 bytes by interrupt on cpu 0: ps2_handle_response drivers/input/serio/libps2.c:482 [inline] ps2_interrupt+0x273/0x550 drivers/input/serio/libps2.c:608 serio_interrupt+0x66/0xf0 drivers/input/serio/serio.c:967 i8042_handle_data+0x388/0x680 drivers/input/serio/i8042.c:598 i8042_interrupt+0x15/0x90 drivers/input/serio/i8042.c:605 __handle_irq_event_percpu+0x8b/0x480 kernel/irq/handle.c:209 handle_irq_event_percpu kernel/irq/handle.c:246 [inline] handle_irq_event+0x64/0xf0 kernel/irq/handle.c:263 handle_edge_irq+0x155/0x440 kernel/irq/chip.c:859 generic_handle_irq_desc include/linux/irqdesc.h:188 [inline] handle_irq arch/x86/kernel/irq.c:209 [inline] call_irq_handler arch/x86/kernel/irq.c:-1 [inline] __common_interrupt+0x60/0xb0 arch/x86/kernel/irq.c:280 common_interrupt+0x3e/0x90 arch/x86/kernel/irq.c:273 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:665 tcp_update_wl include/net/tcp.h:1675 [inline] tcp_ack_update_window net/ipv4/tcp_input.c:3963 [inline] tcp_ack+0x9f2/0x3d90 net/ipv4/tcp_input.c:4366 tcp_rcv_established+0x55d/0x1360 net/ipv4/tcp_input.c:6679 tcp_v4_do_rcv+0x3b1/0xa20 net/ipv4/tcp_ipv4.c:1854 tcp_v4_rcv+0x190e/0x1c50 net/ipv4/tcp_ipv4.c:2248 ip_protocol_deliver_rcu+0x38c/0x7a0 net/ipv4/ip_input.c:207 ip_local_deliver_finish+0x1f0/0x2e0 net/ipv4/ip_input.c:241 NF_HOOK include/linux/netfilter.h:325 [inline] ip_local_deliver+0xe8/0x1e0 net/ipv4/ip_input.c:262 dst_input include/net/dst.h:482 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:623 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:675 [inline] ip_sublist_rcv+0x587/0x680 net/ipv4/ip_input.c:683 ip_list_rcv+0x261/0x290 net/ipv4/ip_input.c:717 __netif_receive_skb_list_ptype net/core/dev.c:6309 [inline] __netif_receive_skb_list_core+0x4ef/0x520 net/core/dev.c:6355 __netif_receive_skb_list net/core/dev.c:6407 [inline] netif_receive_skb_list_internal+0x471/0x5e0 net/core/dev.c:6498 gro_normal_list include/net/gro.h:523 [inline] gro_flush_normal include/net/gro.h:531 [inline] napi_complete_done+0x19c/0x3f0 net/core/dev.c:6866 virtqueue_napi_complete drivers/net/virtio_net.c:740 [inline] virtnet_poll+0x1b16/0x1fb0 drivers/net/virtio_net.c:3027 __napi_poll+0x61/0x300 net/core/dev.c:7798 napi_poll net/core/dev.c:7861 [inline] net_rx_action+0x456/0x930 net/core/dev.c:8018 handle_softirqs+0xcc/0x2a0 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0x44/0xe0 kernel/softirq.c:758 common_interrupt+0x83/0x90 arch/x86/kernel/irq.c:273 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:665 preempt_schedule_irq+0x27/0x50 kernel/sched/core.c:7606 raw_irqentry_exit_cond_resched+0x49/0x60 kernel/entry/common.c:145 irqentry_exit_to_kernel_mode_preempt+0x2b/0x40 include/linux/irq-entry-common.h:468 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline] irqentry_exit+0x7d/0x610 kernel/entry/common.c:167 sysvec_apic_timer_interrupt+0x44/0x80 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 kcsan_setup_watchpoint+0x42b/0x4a0 kernel/kcsan/core.c:713 strcmp+0x16/0x50 lib/string.c:265 xt_find_table_lock+0xab/0x2c0 net/netfilter/x_tables.c:1338 xt_request_find_table_lock+0x24/0xa0 net/netfilter/x_tables.c:1378 get_info net/ipv6/netfilter/ip6_tables.c:982 [inline] do_ip6t_get_ctl+0x5ff/0xcb0 net/ipv6/netfilter/ip6_tables.c:1674 nf_getsockopt+0x190/0x1b0 net/netfilter/nf_sockopt.c:116 ipv6_getsockopt+0x170/0x1e0 net/ipv6/ipv6_sockglue.c:1464 tcp_getsockopt+0xad/0xe0 net/ipv4/tcp.c:4873 sock_common_getsockopt+0x60/0x70 net/core/sock.c:4028 do_sock_getsockopt+0x2f5/0x570 net/socket.c:2503 __sys_getsockopt net/socket.c:2534 [inline] __do_sys_getsockopt net/socket.c:2541 [inline] __se_sys_getsockopt net/socket.c:2538 [inline] __x64_sys_getsockopt+0x11d/0x1a0 net/socket.c:2538 x64_sys_call+0x1032/0x2550 arch/x86/include/generated/asm/syscalls_64.h:56 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888103ff1448 of 8 bytes by task 833 on cpu 1: __ps2_command+0x439/0xaa0 drivers/input/serio/libps2.c:341 ps2_command+0x52/0x90 drivers/input/serio/libps2.c:403 cypress_send_ext_cmd+0xba/0x550 drivers/input/mouse/cypress_ps2.c:142 cypress_detect+0x44/0x130 drivers/input/mouse/cypress_ps2.c:163 psmouse_do_detect drivers/input/mouse/psmouse-base.c:995 [inline] psmouse_try_protocol drivers/input/mouse/psmouse-base.c:1009 [inline] psmouse_extensions+0x547/0x960 drivers/input/mouse/psmouse-base.c:1132 __psmouse_reconnect+0x3dd/0x880 drivers/input/mouse/psmouse-base.c:1685 psmouse_reconnect+0x23/0x40 drivers/input/mouse/psmouse-base.c:1723 serio_reconnect_driver drivers/input/serio/serio.c:52 [inline] serio_reconnect_port drivers/input/serio/serio.c:558 [inline] serio_handle_event+0x1c7/0xac0 drivers/input/serio/serio.c:201 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x56a/0xa50 kernel/workqueue.c:3479 worker_thread+0x569/0x750 kernel/workqueue.c:3560 kthread+0x223/0x270 kernel/kthread.c:436 ret_from_fork+0x146/0x330 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 value changed: 0x0000000000000006 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 833 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_long serio_handle_event ================================================================== input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input11