Hi, All. I've faced exactly with the same behaviour. And hardware is Asus as well.
uname -a Linux E402MA 6.8.0-100-generic #100-Ubuntu SMP PREEMPT_DYNAMIC Tue Jan 13 16:40:06 UTC 2026 x86_64 x86_64 x86_64 GNU/Linux 2026-02-23T21:46:56.583079+02:00 E402MA kernel: ------------[ cut here ]------------ 2026-02-23T21:46:56.583086+02:00 E402MA kernel: UBSAN: array-index-out-of-bounds in /build/linux-ylyFjh/linux-6.8.0/drivers/input/mouse/focaltech.c:222:17 2026-02-23T21:46:56.583093+02:00 E402MA kernel: index -1 is out of range for type 'focaltech_finger_state [5]' 2026-02-23T21:46:56.583502+02:00 E402MA kernel: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.8.0-100-generic #100-Ubuntu 2026-02-23T21:46:56.583519+02:00 E402MA kernel: Hardware name: ASUSTeK COMPUTER INC. E402MA/E402MA, BIOS E402MA.207 01/28/2016 2026-02-23T21:46:56.583528+02:00 E402MA kernel: Call Trace: 2026-02-23T21:46:56.583535+02:00 E402MA kernel: <IRQ> 2026-02-23T21:46:56.583543+02:00 E402MA kernel: dump_stack_lvl+0x76/0xa0 2026-02-23T21:46:56.583551+02:00 E402MA kernel: dump_stack+0x10/0x20 2026-02-23T21:46:56.583559+02:00 E402MA kernel: __ubsan_handle_out_of_bounds+0xc6/0x110 2026-02-23T21:46:56.583568+02:00 E402MA kernel: focaltech_process_packet+0x3f8/0x400 [psmouse] 2026-02-23T21:46:56.583575+02:00 E402MA kernel: focaltech_process_byte+0x23/0x30 [psmouse] 2026-02-23T21:46:56.583636+02:00 E402MA kernel: psmouse_handle_byte+0x19/0x130 [psmouse] 2026-02-23T21:46:56.583650+02:00 E402MA kernel: psmouse_receive_byte+0x91/0x300 [psmouse] 2026-02-23T21:46:56.583659+02:00 E402MA kernel: ps2_interrupt+0xb7/0x1b0 2026-02-23T21:46:56.583667+02:00 E402MA kernel: serio_interrupt+0x4c/0xa0 2026-02-23T21:46:56.583675+02:00 E402MA kernel: i8042_interrupt+0x196/0x4c0 2026-02-23T21:46:56.583682+02:00 E402MA kernel: __handle_irq_event_percpu+0x4f/0x1b0 2026-02-23T21:46:56.583690+02:00 E402MA kernel: handle_irq_event+0x39/0x80 2026-02-23T21:46:56.583697+02:00 E402MA kernel: handle_edge_irq+0x8c/0x250 2026-02-23T21:46:56.583705+02:00 E402MA kernel: __common_interrupt+0x51/0xf0 2026-02-23T21:46:56.583712+02:00 E402MA kernel: common_interrupt+0x9f/0xb0 2026-02-23T21:46:56.583720+02:00 E402MA kernel: </IRQ> 2026-02-23T21:46:56.583727+02:00 E402MA kernel: <TASK> 2026-02-23T21:46:56.583734+02:00 E402MA kernel: asm_common_interrupt+0x27/0x40 2026-02-23T21:46:56.583741+02:00 E402MA kernel: RIP: 0010:cpuidle_enter_state+0xda/0x730 2026-02-23T21:46:56.583749+02:00 E402MA kernel: Code: b5 f4 fe e8 38 ef ff ff 8b 53 04 49 89 c7 0f 1f 44 00 00 31 ff e8 46 44 f3 fe 80 7d d0 00 0f 85 61 02 00 00 fb 0f 1f 44 00 00 <45> 85 f6 0 f 88 f7 01 00 00 4d 63 ee 49 83 fd 0a 0f 83 17 05 00 00 2026-02-23T21 ... Now I've disabled internal pointing device in BIOS. Working via x2x. Regards, Max -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2125250 Title: UBSAN: array-index-out-of-bounds in /build/linux-1ylo5V/linux-6.8.0/drivers/input/mouse/focaltech.c:221:17 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2125250/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
