Public bug reported:
After upgrading from 24.04 to 26.04 (kernel 7.0.0-38-generic), the system
panicked
almost daily ("Fatal exception in interrupt").
kdump analysis:
- Repeated WARNING at kernel/workqueue.c:2351 (__queue_work, called from
delayed_work_timer_fn) every 5-7 s, followed by:
"Oops: general protection fault, probably for non-canonical address
0xdead00000000012a" with RIP at __run_timers+0x1e0.
- The delayed_work involved has func = audit_cache_work_function and lives in
the apparmor_auditcache slab cache. The timer entry contains LIST_POISON2
(0xdead000000000122).
Trigger: a user systemd service (onedrive.service) in a restart loop (~every
5-20 s). Each start produced:
apparmor="DENIED" operation="capable" profile="unprivileged_userns"
comm="(onedrive)" capname="sys_admin"
Stopping the restart loop stopped the warnings.
Hardware: Lenovo 83EM, BIOS LTCN33WW, Intel Raptor Lake.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-38-generic 7.0.0-38.38
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: jernej 5837 F.... wireplumber
/dev/snd/seq: jernej 5820 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Fri Oct 16 22:08:21 2026
InstallationDate: Installed on 2025-06-17 (486 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
MachineType: LENOVO 83EM
ProcEnviron:
LANG=sl_SI.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=08602c01-12af-4ad1-b334-b334114d36af ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/19/2024
dmi.bios.release: 1.33
dmi.bios.vendor: LENOVO
dmi.bios.version: LTCN33WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: NO DPK
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: IdeaPad Slim 3 15IRH8
dmi.ec.firmware.release: 1.33
dmi.modalias:
dmi:bvnLENOVO:bvrLTCN33WW:bd03/19/2024:br1.33:efr1.33:svnLENOVO:pn83EM:pvrIdeaPadSlim315IRH8:rvnLENOVO:rnLNVNB161216:rvrNODPK:cvnLENOVO:ct10:cvrIdeaPadSlim315IRH8:skuLENOVO_MT_83EM_BU_idea_FM_IdeaPadSlim315IRH8:pfaIdeaPadSlim315IRH8:
dmi.product.family: IdeaPad Slim 3 15IRH8
dmi.product.name: 83EM
dmi.product.sku: LENOVO_MT_83EM_BU_idea_FM_IdeaPad Slim 3 15IRH8
dmi.product.version: IdeaPad Slim 3 15IRH8
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2171189
Title:
GPF in __run_timers caused by corrupted apparmor audit_cache
delayed_work (7.0.0-38-generic)
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