================================================================== BUG: KCSAN: data-race in ps2_do_sendbyte / ps2_handle_ack write to 0xffff888103815840 of 8 bytes by interrupt on cpu 1: ps2_handle_ack+0x1b3/0x320 drivers/input/serio/libps2.c:444 atkbd_interrupt+0xa5b/0xc30 drivers/input/keyboard/atkbd.c:422 serio_interrupt+0x5d/0xe0 drivers/input/serio/serio.c:1001 i8042_interrupt+0x380/0x710 drivers/input/serio/i8042.c:606 __handle_irq_event_percpu+0x92/0x400 kernel/irq/handle.c:158 handle_irq_event_percpu kernel/irq/handle.c:193 [inline] handle_irq_event+0x60/0xf0 kernel/irq/handle.c:210 handle_edge_irq+0x17e/0x5a0 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+0x60/0x100 arch/x86/kernel/irq.c:250 common_interrupt+0x9a/0xc0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x22/0x40 is_atomic kernel/kcsan/core.c:247 [inline] should_watch kernel/kcsan/core.c:275 [inline] check_access kernel/kcsan/core.c:741 [inline] __tsan_read8+0x11f/0x180 kernel/kcsan/core.c:1014 folio_memcg_kmem include/linux/memcontrol.h:560 [inline] folio_memcg include/linux/memcontrol.h:453 [inline] folio_memcg_unlock mm/memcontrol.c:2107 [inline] unlock_page_memcg+0x2d/0x110 mm/memcontrol.c:2112 page_add_file_rmap+0x5e/0x1b0 mm/rmap.c:1334 do_set_pte+0x258/0x500 mm/memory.c:4317 filemap_map_pages+0x595/0xae0 mm/filemap.c:3373 do_fault_around mm/memory.c:4487 [inline] do_read_fault mm/memory.c:4513 [inline] do_fault+0x433/0xb20 mm/memory.c:4647 handle_pte_fault mm/memory.c:4911 [inline] __handle_mm_fault mm/memory.c:5053 [inline] handle_mm_fault+0x889/0xa90 mm/memory.c:5151 do_user_addr_fault+0x4a1/0x980 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1488 [inline] exc_page_fault+0x60/0x160 arch/x86/mm/fault.c:1544 asm_exc_page_fault+0x22/0x30 read to 0xffff888103815840 of 8 bytes by task 11456 on cpu 0: ps2_do_sendbyte+0x1ae/0x380 drivers/input/serio/libps2.c:45 __ps2_command+0x35e/0x8c0 drivers/input/serio/libps2.c:273 ps2_command+0x51/0x90 drivers/input/serio/libps2.c:332 atkbd_set_repeat_rate drivers/input/keyboard/atkbd.c:583 [inline] atkbd_event_work+0x2a8/0x2e0 drivers/input/keyboard/atkbd.c:637 process_one_work+0x3d3/0x720 kernel/workqueue.c:2289 worker_thread+0x618/0xa70 kernel/workqueue.c:2436 kthread+0x1a9/0x1e0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 value changed: 0x0000000000000001 -> 0x0000000000000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11456 Comm: kworker/0:3 Not tainted 5.19.0-syzkaller-13616-gf41445645ab5-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: events atkbd_event_work ==================================================================