Public bug reported:
DistroRelease: Ubuntu 26.04 LTS (resolute)
Package: linux-image-7.0.0-28-generic 7.0.0-28.28
Kernel: Linux 7.0.0-28-generic #28-Ubuntu SMP PREEMPT_DYNAMIC x86_64
Hardware: ASUS PRIME Z690M-PLUS D4, BIOS 3811
GPU: NVIDIA GeForce RTX 5060 Ti (driver 610.43.02, tainted OE)
Impact of the bug:
The entire system rebooted unexpectedly (kdump). Work in progress was lost.
What I expected to happen:
The desktop session should remain stable under normal application load.
What actually happened:
On 2026-08-03 ~17:25 JST, during heavy Electron/Chromium workload (Cursor IDE
agent/plan build), the kernel hit an Oops and kdump triggered an automatic
reboot.
kdump artifacts: /var/crash/202608031725/ (dmesg + vmcore)
Apport ticket: cb836c7a-8f1f-11f1-8811-9953c338e1ca
Kernel Oops (from kdump dmesg):
Oops: general protection fault, probably for non-canonical address
0xffff7127d16b6d48: 0000 [#1] SMP NOPTI
CPU: 6 PID: 80704 Comm: ThreadPoolForeg
Tainted: G OE (nvidia out-of-tree modules loaded)
RIP: lru_gen_del_folio.constprop.0+0x19a/0x380
Call Trace:
lru_gen_del_folio
__page_cache_release.part.0
folios_put_refs
free_pages_and_swap_cache
zap_pte_range
exit_mmap
do_exit
get_signal
Not OOM: 64 GB RAM, swap unused at time of crash.
Correlating load (not proven causal):
- GNOME localsearch indexing CIFS/rclone/SSHFS mounts under ~/drive and ~/mnt
- CIFS automount retries to unreachable //192.168.1.152/ (return code -113/-4)
Host mitigations already applied locally:
- localsearch ignored-directories: drive, mnt
- Disabled unreachable .152 CIFS fstab automount
Regression notes:
Similar sudden reboots were rare on Ubuntu 24.04 (6.8 kernel). This is the
first kdump on 26.04 / 7.0.0-28-generic on this machine.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-28-generic 7.0.0-28.28
ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12
Uname: Linux 7.0.0-28-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ytsubame 2780 F.... wireplumber
/dev/snd/controlC0: ytsubame 2780 F.... wireplumber
/dev/snd/seq: ytsubame 2696 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 3 18:39:40 2026
InstallationDate: Installed on 2026-07-13 (21 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
MachineType: ASUS System Product Name
PackageArchitecture: amd64
ProcEnviron:
LANG=ja_JP.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=dumb
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-28-generic
root=UUID=9061133c-3778-49ec-85ba-ecb208384534 ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
Title: general protection fault in lru_gen_del_folio during exit_mmap
(ThreadPoolForeg)
UpgradeStatus: No upgrade log present (probably fresh install)
_MarkForUpload: True
dmi.bios.date: 10/22/2025
dmi.bios.release: 38.11
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 3811
dmi.board.asset.tag: Default string
dmi.board.name: PRIME Z690M-PLUS D4
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr3811:bd10/22/2025:br38.11:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEZ690M-PLUSD4:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU:pfaTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: ASUS
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2162722
Title:
general protection fault in lru_gen_del_folio during exit_mmap
(ThreadPoolForeg)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2162722/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
