Public bug reported:
laptop ASUS UX303LNB, kernel 7.0.0-38-generic
- Error appeared after recent update
- Touchpad is working normally
[ 49.388437] UBSAN: array-index-out-of-bounds in
/build/linux-hwe-7.0-29AqNB/linux-hwe-7.0-7.0.0/drivers/input/mouse/focaltech.c:222:17
[ 49.388439] index -1 is out of range for type 'focaltech_finger_state [5]'
[ 49.388441] CPU: 2 UID: 0 PID: 0 Comm: swapper/2 Tainted: P OE
7.0.0-38-generic #38~24.04.4-Ubuntu PREEMPT(lazy)
[ 49.388443] Tainted: [P]=PROPRIETARY_MODULE, [O]=OOT_MODULE,
[E]=UNSIGNED_MODULE
[ 49.388444] Hardware name: ASUSTeK COMPUTER INC. UX303LNB/UX303LNB, BIOS
UX303LNB.203 12/10/2014
[ 49.388445] Call Trace:
[ 49.388445] <IRQ>
[ 49.388446] dump_stack_lvl+0x76/0xa0
[ 49.388449] dump_stack+0x10/0x20
[ 49.388451] __ubsan_handle_out_of_bounds+0xdd/0x120
[ 49.388454] focaltech_process_packet+0x3e4/0x400 [psmouse]
[ 49.388464] focaltech_process_byte+0x23/0x30 [psmouse]
[ 49.388474] psmouse_handle_byte+0x19/0x130 [psmouse]
[ 49.388485] psmouse_receive_byte+0x91/0x300 [psmouse]
[ 49.388494] ? wakeup_preempt+0x61/0xa0
[ 49.388496] ps2_interrupt+0xa5/0xf0
[ 49.388499] serio_interrupt+0x4c/0xb0
[ 49.388502] i8042_handle_data+0x16c/0x4b0
[ 49.388505] i8042_interrupt+0x13/0x70
[ 49.388508] __handle_irq_event_percpu+0x58/0x280
[ 49.388512] handle_irq_event+0x39/0x80
[ 49.388516] handle_edge_irq+0xb2/0x1b0
[ 49.388519] __common_interrupt+0x53/0x150
[ 49.388522] common_interrupt+0xb1/0xe0
[ 49.388524] </IRQ>
[ 49.388524] <TASK>
[ 49.388525] asm_common_interrupt+0x27/0x40
[ 49.388527] RIP: 0010:cpuidle_enter_state+0xda/0x720
[ 49.388528] Code: 53 db fe e8 b8 ed ff ff 8b 53 04 49 89 c7 0f 1f 44 00 00
31 ff e8 16 33 d9 fe 80 7d d0 00 0f 85 ce 01 00 00 fb 0f 1f 44 00 00 <45> 85 f6
0f 88 4d 02 00 00 4d 63 ee 49 83 fd 0a 0f 83 35 05 00 00
[ 49.388530] RSP: 0018:ffffd3d1800fbe00 EFLAGS: 00000246
[ 49.388531] RAX: 0000000000000000 RBX: ffff8c7d22d3d680 RCX: 0000000000000000
[ 49.388532] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
[ 49.388533] RBP: ffffd3d1800fbe50 R08: 0000000000000000 R09: 0000000000000000
[ 49.388534] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8ed54cc0
[ 49.388535] R13: 0000000000000008 R14: 0000000000000008 R15: 0000000b7fc0ac83
[ 49.388537] ? tick_nohz_stop_tick+0x63/0x270
[ 49.388540] ? raw_spin_rq_unlock+0x14/0x50
[ 49.388543] cpuidle_enter+0x2e/0x50
[ 49.388545] call_cpuidle+0x21/0x50
[ 49.388547] cpuidle_idle_call+0x173/0x200
[ 49.388549] do_idle+0x90/0xf0
[ 49.388551] cpu_startup_entry+0x29/0x30
[ 49.388553] start_secondary+0x128/0x170
[ 49.388556] common_startup_64+0x13e/0x141
[ 49.388559] </TASK>
[ 49.388559] ---[ end trace ]---
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38~24.04.4
ProcVersionSignature: Ubuntu 7.0.0-38.38~24.04.4-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.3-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mss 2275 F.... wireplumber
/dev/snd/controlC0: mss 2275 F.... wireplumber
/dev/snd/seq: mss 2270 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct 6 05:50:21 2026
InstallationDate: Installed on 2026-02-04 (244 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 064e:9700 Suyin Corp. Asus Integrated Webcam
Bus 001 Device 003: ID 8087:0a2a Intel Corp. Bluetooth wireless interface
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX303LNB
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-38-generic
root=UUID=cdf3f19a-f57c-441d-bad9-f95fb2217444 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-7.0.0-38-generic N/A
linux-backports-modules-7.0.0-38-generic N/A
linux-firmware 20240318.git3b128b60.0ubuntu3.1
SourcePackage: linux-hwe-7.0
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/10/2014
dmi.bios.release: 5.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX303LNB.203
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX303LNB
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrUX303LNB.203:bd12/10/2014:br5.6:svnASUSTeKCOMPUTERINC.:pnUX303LNB:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LNB:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:skuASUS-NotebookSKU:pfaUX:
dmi.product.family: UX
dmi.product.name: UX303LNB
dmi.product.sku: ASUS-NotebookSKU
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
** Affects: linux-hwe-7.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2169656
Title:
focaltech: UBSAN array-index-out-of-bounds in focaltech_process_packet
(index -1)
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