Two more kdump reboots on 7.0.0-30-generic (2026-08-30 and 2026-09-01), then upgrade to 7.0.0-31 on 2026-09-04.
MGLRU mitigation remains applied on this host: /etc/tmpfiles.d/disable-mglru.conf cat /sys/kernel/mm/lru_gen/enabled -> 0x0000 (verified before and after 7.0.0-31 install) --- Recurrence #6: 2026-08-30 16:00 JST --- Kernel: 7.0.0-30-generic #30-Ubuntu SMP PREEMPT(lazy) Package: linux-image-7.0.0-30-generic 7.0.0-30.30 Oops: page fault (not-present page) at __page_cache_release.part.0+0xac/0x240 Comm: cursor (PID 15604, UID 1000) Tainted: G OE (nvidia and other OOT modules) Call trace (kernel, partial): folios_put_refs free_pages_and_swap_cache __tlb_batch_free_encoded_pages kdump: /var/crash/202608301600/ (dmesg excerpt attached) --- Recurrence #7: 2026-09-01 18:49 JST --- Kernel: 7.0.0-30-generic #30-Ubuntu SMP PREEMPT(lazy) Package: linux-image-7.0.0-30-generic 7.0.0-30.30 Oops: page fault (not-present page) at __handle_mm_fault+0x5b/0x720 Comm: resources (PID 25325, UID 1000) — Chromium/Electron thread name Tainted: G OE (nvidia and other OOT modules) Call trace (kernel, partial): handle_mm_fault do_user_addr_fault exc_page_fault kdump: /var/crash/202609011849/ (dmesg excerpt attached) Hardware unchanged: ASUS PRIME Z690M-PLUS D4, BIOS 3811, RTX 5060 Ti, 61 GiB RAM — not OOM at crash time. --- Kernel upgrade 2026-09-04 --- Upgraded linux-image-7.0.0-31-generic via unattended-upgrade (~11:51 JST). Reboot at 11:54 was orderly systemd-reboot (postinst), not kdump. Now running 7.0.0-31-generic. MGLRU still disabled (0x0000). Updated recurrence table: | Date (JST) | Kernel | RIP / path | Comm | |-------------------|----------|-------------------------------|-----------------| | 2026-08-03 17:25 | 7.0.0-28 | lru_gen_del_folio | ThreadPoolForeg | | 2026-08-09 16:39 | 7.0.0-29 | lru_gen_del_folio | kswapd0 | | 2026-08-13 14:14 | 7.0.0-29 | lru_gen_del_folio | node (Cursor) | | 2026-08-14 03:41 | 7.0.0-29 | lru_gen_del_folio | ThreadPoolForeg | | 2026-08-23 14:29 | 7.0.0-30 | lru_activate | libuv-worker | | 2026-08-30 16:00 | 7.0.0-30 | __page_cache_release.part.0 | cursor | | 2026-09-01 18:49 | 7.0.0-30 | __handle_mm_fault | resources | All faults remain in kernel memory management / page cache vicinity under heavy desktop I/O (Cursor, Chromium). Disabling MGLRU did not stop recurrences on 7.0.0-30. ** Attachment added: "launchpad_2162722_kdump_dmesg_20260830_20260901.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2162722/+attachment/5997304/+files/launchpad_2162722_kdump_dmesg_20260830_20260901.txt -- 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
