VM boots slowly with large-BAR GPU Passthrough due to pci/probe.c redundancy

Upstream patch submitted to kernel-team list with subject [SRU][N/O][PATCH 0/1] PCI: Batch BAR sizing operations

This bug is awaiting verification that the linux/6.8.0-56.58 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux' to 'verification-done-noble-linux'. If the problem still exists, change the tag 'verification-needed-noble-linux' to 'verification-failed-noble-linux'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

-proposed kernel verified to fix bug on DGX H100

This bug is awaiting verification that the linux/6.11.0-21.21 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-oracular-linux' to 'verification-done-oracular-linux'. If the problem still exists, change the tag 'verification-needed-oracular-linux' to 'verification-failed-oracular-linux'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

oracular-proposed kernel verified to fix bug on DGX H100

This bug is awaiting verification that the linux-intel/6.11.0-1008.8 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-oracular-linux-intel' to 'verification-done-oracular-linux-intel'. If the problem still exists, change the tag 'verification-needed-oracular-linux-intel' to 'verification-failed-oracular-linux-intel'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-nvidia-tegra/6.8.0-1004.4 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-nvidia-tegra' to 'verification-done-noble-linux-nvidia-tegra'. If the problem still exists, change the tag 'verification-needed-noble-linux-nvidia-tegra' to 'verification-failed-noble-linux-nvidia-tegra'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-nvidia-tegra-pvw/6.8.0-1005.5 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-nvidia-tegra-pvw' to 'verification-done-noble-linux-nvidia-tegra-pvw'. If the problem still exists, change the tag 'verification-needed-noble-linux-nvidia-tegra-pvw' to 'verification-failed-noble-linux-nvidia-tegra-pvw'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug was fixed in the package linux - 6.8.0-56.58

---------------
linux (6.8.0-56.58) noble; urgency=medium

  * noble/linux: 6.8.0-56.58 -proposed tracker (LP: #2098244)

  * Noble update: upstream stable patchset 2024-07-19 (LP: #2073603)
    - Revert "drm: Make drivers depends on DRM_DW_HDMI"
    - Revert "UBUNTU: [Config] Drivers now depend on DRM_DW_HDMI"

  * drm/amd/display: Add check for granularity in dml ceil/floor helpers
    (LP: #2098080)
    - drm/amd/display: Add check for granularity in dml ceil/floor helpers

  * optimized default EPP for GNR family (LP: #2097554)
    - cpufreq: intel_pstate: Update Balance-performance EPP for Granite Rapids

  * Incorrect LAPIC/x2APIC parsing order (LP: #2097455)
    - x86/acpi: Fix LAPIC/x2APIC parsing order

  * MGLRU: page allocation failure on NUMA-enabled systems (LP: #2097214)
    - mm/vmscan: wake up flushers conditionally to avoid cgroup OOM

  * Upstream commit 65357e2c164a: "RDMA/mana_ib: set node_guid" applied
    incorrectly (LP: #2096885)
    - Revert "RDMA/mana_ib: set node_guid"

  * AppArmor early policy load not funcitoning (LP: #2095370)
    - SAUCE: Revert "UBUNTU: SAUCE: apparmor4.0.0 [67/90]: userns - add the
      ability to reference a global variable for a feature value"

  * apparmor unconfined profile blocks pivot_root (LP: #2067900)
    - SAUCE: Revert "UBUNTU: SAUCE: apparmor4.0.0 [81/90]: apparmor: convert easy
      uses of unconfined() to label_mediates()"

  * CVE-2024-50117
    - drm/amd: Guard against bad data for ATIF ACPI method

  * CVE-2024-56582
    - btrfs: fix use-after-free in btrfs_encoded_read_endio()

  * CVE-2024-53165
    - sh: intc: Fix use-after-free bug in register_intc_controller()

  * CVE-2024-53156
    - wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service()

  * CVE-2024-56663
    - wifi: nl80211: fix NL80211_ATTR_MLO_LINK_ID off-by-one

  * CVE-2024-56614
    - xsk: fix OOB map writes when deleting elements

  * VM boots slowly with large-BAR GPU Passthrough due to pci/probe.c redundancy
    (LP: #2097389)
    - PCI: Batch BAR sizing operations

  * Noble update: upstream stable patchset 2025-02-04 (LP: #2097393)
    - Revert "PCI/MSI: Provide stubs for IMS functions"
    - gfs2: Revert "introduce qd_bh_get_or_undo"
    - gfs2: qd_check_sync cleanups
    - gfs2: Revert "ignore negated quota changes"
    - Revert "powerpc/ps3_defconfig: Disable PPC64_BIG_ENDIAN_ELF_ABI_V2"
    - tracing: Have saved_cmdlines arrays all in one allocation
    - spi: spi-fsl-lpspi: remove redundant spi_controller_put call
    - ata: ahci: Add mask_port_map module parameter
    - ASoC: tas2781: mark dvc_tlv with __maybe_unused
    - scsi: sd: Do not repeat the starting disk message
    - bootconfig: Fix the kerneldoc of _xbc_exit()
    - perf sched: Move start_work_mutex and work_done_wait_mutex initialization to
      perf_sched__replay()
    - perf sched: Fix memory leak in perf_sched__map()
    - perf sched: Move curr_thread initialization to perf_sched__map()
    - perf sched: Move curr_pid and cpu_last_switched initialization to
      perf_sched__{lat|map|replay}()
    - libsubcmd: Don't free the usage string
    - selftests: Introd...

This bug was fixed in the package linux - 6.11.0-21.21

---------------
linux (6.11.0-21.21) oracular; urgency=medium

  * oracular/linux: 6.11.0-21.21 -proposed tracker (LP: #2098763)

  * Processes crash when attaching uretprobes to processes running in Docker
    (LP: #2098759)
    - seccomp: passthrough uretprobe systemcall without filtering

linux (6.11.0-20.20) oracular; urgency=medium

  * oracular/linux: 6.11.0-20.20 -proposed tracker (LP: #2098205)

  * drm/amd/display: Add check for granularity in dml ceil/floor helpers
    (LP: #2098080)
    - drm/amd/display: Add check for granularity in dml ceil/floor helpers

  * optimized default EPP for GNR family (LP: #2097554)
    - cpufreq: intel_pstate: Update Balance-performance EPP for Granite Rapids

  * Incorrect LAPIC/x2APIC parsing order (LP: #2097455)
    - x86/acpi: Fix LAPIC/x2APIC parsing order

  * MGLRU: page allocation failure on NUMA-enabled systems (LP: #2097214)
    - mm/vmscan: wake up flushers conditionally to avoid cgroup OOM

  * AppArmor early policy load not funcitoning (LP: #2095370)
    - SAUCE: Revert "UBUNTU: SAUCE: apparmor4.0.0 [66/99]: userns - add the
      ability to reference a global variable for a feature value"

  * apparmor unconfined profile blocks pivot_root (LP: #2067900)
    - SAUCE: Revert "UBUNTU: SAUCE: apparmor4.0.0 [80/99]: apparmor: convert easy
      uses of unconfined() to label_mediates()"

  * Oracular update: upstream stable patchset 2025-02-13 (LP: #2098165)
    - memblock: make memblock_set_node() also warn about use of MAX_NUMNODES
    - jbd2: increase IO priority for writing revoke records
    - jbd2: flush filesystem device before updating tail sequence
    - dm array: fix unreleased btree blocks on closing a faulty array cursor
    - dm array: fix cursor index when skipping across block boundaries
    - exfat: fix the infinite loop in __exfat_free_cluster()
    - ASoC: rt722: add delay time to wait for the calibration procedure
    - ASoC: mediatek: disable buffer pre-allocation
    - selftests/alsa: Fix circular dependency involving global-timer
    - ieee802154: ca8210: Add missing check for kfifo_alloc() in ca8210_probe()
    - net: 802: LLC+SNAP OID:PID lookup on start of skb data
    - tcp/dccp: allow a connection when sk_max_ack_backlog is zero
    - net: libwx: fix firmware mailbox abnormal return
    - pds_core: limit loop over fw name list
    - bnxt_en: Fix possible memory leak when hwrm_req_replace fails
    - cxgb4: Avoid removal of uninserted tid
    - ice: fix incorrect PHY settings for 100 GB/s
    - igc: return early when failing to read EECD register
    - tls: Fix tls_sw_sendmsg error handling
    - eth: gve: use appropriate helper to set xdp_features
    - Bluetooth: hci_sync: Fix not setting Random Address when required
    - Bluetooth: MGMT: Fix Add Device to responding before completing
    - Bluetooth: btnxpuart: Fix driver sending truncated data
    - Bluetooth: btnxpuart: Fix glitches seen in dual A2DP streaming
    - tcp: Annotate data-race around sk->sk_mark in tcp_v4_send_reset
    - netfilter: nf_tables: imbalance in flowtable binding
    - drm/mediatek: stop selecting foreign drivers
    - [Config] updat...

This bug is awaiting verification that the linux-nvidia-6.11/6.11.0-1005.5 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-nvidia-6.11' to 'verification-done-noble-linux-nvidia-6.11'. If the problem still exists, change the tag 'verification-needed-noble-linux-nvidia-6.11' to 'verification-failed-noble-linux-nvidia-6.11'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-azure-nvidia/6.8.0-1014.15 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-azure-nvidia' to 'verification-done-noble-linux-azure-nvidia'. If the problem still exists, change the tag 'verification-needed-noble-linux-azure-nvidia' to 'verification-failed-noble-linux-azure-nvidia'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-aws-6.11/6.11.0-1013.14~24.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-aws-6.11' to 'verification-done-noble-linux-aws-6.11'. If the problem still exists, change the tag 'verification-needed-noble-linux-aws-6.11' to 'verification-failed-noble-linux-aws-6.11'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-raspi/6.8.0-1028.32 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-raspi' to 'verification-done-noble-linux-raspi'. If the problem still exists, change the tag 'verification-needed-noble-linux-raspi' to 'verification-failed-noble-linux-raspi'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux/5.15.0-142.152 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-jammy-linux' to 'verification-done-jammy-linux'. If the problem still exists, change the tag 'verification-needed-jammy-linux' to 'verification-failed-jammy-linux'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

jammy-proposed kernel verified to fix bug on DGX H100:

I am seeing the boot time improvement on 2/2 tests (the time between virsh start finishing and the boot reaching Host and Network Name Lookups is down to 1:30, from 2:30 on the old kernel), GPU driver works, and the timing of the console outputs where the BARs are being mapped are such that it looks like the expected 'batching' behavior is happening

This bug was fixed in the package linux - 5.15.0-142.152

---------------
linux (5.15.0-142.152) jammy; urgency=medium

  * jammy/linux: 5.15.0-142.152 -proposed tracker (LP: #2110829)

  * Rotate the Canonical Livepatch key (LP: #2111244)
    - [Config] Prepare for Canonical Livepatch key rotation

  * Jammy generic-64k fails to initialize gVNIC devices (LP: #2109537)
    - gve: Perform adminq allocations through a dma_pool.
    - gve: Deprecate adminq_pfn for pci revision 0x1.
    - gve: Remove obsolete checks that rely on page size.
    - gve: Add page size register to the register_page_list command.
    - gve: Remove dependency on 4k page size.

  * CVE-2025-2312 cifs.upcall could access incorrect kerberos credentials cache
    (LP: #2099914) // CVE-2025-2312
    - CIFS: New mount option for cifs.upcall namespace resolution

  * [UBUNTU 22.04] net/smc: fix neighbour and rtable leak in smc_ib_find_route()
    (LP: #2109601) // CVE-2024-36945
    - net/smc: fix neighbour and rtable leak in smc_ib_find_route()

  * Jammy update: v5.15.180 upstream stable release (LP: #2109355)
    - clockevents/drivers/i8253: Fix stop sequence for timer 0
    - sched/isolation: Prevent boot crash when the boot CPU is nohz_full
    - fbdev: hyperv_fb: iounmap() the correct memory when removing a device
    - pinctrl: bcm281xx: Fix incorrect regmap max_registers value
    - netfilter: nft_ct: Use __refcount_inc() for per-CPU nft_ct_pcpu_template.
    - net: dsa: mv88e6xxx: Verify after ATU Load ops
    - netpoll: hold rcu read lock in __netpoll_send_skb()
    - Drivers: hv: vmbus: Don't release fb_mmio resource in vmbus_free_mmio()
    - ipvs: prevent integer overflow in do_ip_vs_get_ctl()
    - netfilter: nft_exthdr: fix offset with ipv4_find_option()
    - gre: Fix IPv6 link-local address generation.
    - slab: clean up function prototypes
    - slab: Introduce kmalloc_size_roundup()
    - openvswitch: Use kmalloc_size_roundup() to match ksize() usage
    - net: openvswitch: remove misbehaving actions length check
    - net/mlx5e: Prevent bridge link show failure for non-eswitch-allowed devices
    - nvme-fc: go straight to connecting state when initializing
    - hrtimers: Mark is_migration_base() with __always_inline
    - powercap: call put_device() on an error path in
      powercap_register_control_type()
    - scsi: core: Use GFP_NOIO to avoid circular locking dependency
    - ACPI: resource: IRQ override for Eluktronics MECH-17
    - alpha/elf: Fix misc/setarch test of util-linux by removing 32bit support
    - vboxsf: fix building with GCC 15
    - HID: intel-ish-hid: fix the length of MNG_SYNC_FW_CLOCK in doorbell
    - sched: Clarify wake_up_q()'s write to task->wake_q.next
    - s390/cio: Fix CHPID "configure" attribute caching
    - thermal/cpufreq_cooling: Remove structure member documentation
    - ASoC: rsnd: don't indicate warning on rsnd_kctrl_accept_runtime()
    - ASoC: arizona/madera: use fsleep() in up/down DAPM event delays.
    - ASoC: SOF: Intel: hda: add softdep pre to snd-hda-codec-hdmi module
    - net: wwan: mhi_wwan_mbim: Silence sequence number glitch errors
    - nvmet-rdma: recheck queue state is LIVE in state lock in recv do...

This bug is awaiting verification that the linux-intel-iotg-5.15/5.15.0-1083.89~20.04.1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal-linux-intel-iotg-5.15' to 'verification-done-focal-linux-intel-iotg-5.15'. If the problem still exists, change the tag 'verification-needed-focal-linux-intel-iotg-5.15' to 'verification-failed-focal-linux-intel-iotg-5.15'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-fips/6.8.0-72.72+fips1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-fips' to 'verification-done-noble-linux-fips'. If the problem still exists, change the tag 'verification-needed-noble-linux-fips' to 'verification-failed-noble-linux-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-aws-fips/6.8.0-1034.36+fips1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-aws-fips' to 'verification-done-noble-linux-aws-fips'. If the problem still exists, change the tag 'verification-needed-noble-linux-aws-fips' to 'verification-failed-noble-linux-aws-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-gcp-fips/6.8.0-1035.37+fips1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-gcp-fips' to 'verification-done-noble-linux-gcp-fips'. If the problem still exists, change the tag 'verification-needed-noble-linux-gcp-fips' to 'verification-failed-noble-linux-gcp-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-xilinx/6.8.0-1017.18 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-xilinx' to 'verification-done-noble-linux-xilinx'. If the problem still exists, change the tag 'verification-needed-noble-linux-xilinx' to 'verification-failed-noble-linux-xilinx'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the linux-azure-fips/6.8.0-1034.39+fips1 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-noble-linux-azure-fips' to 'verification-done-noble-linux-azure-fips'. If the problem still exists, change the tag 'verification-needed-noble-linux-azure-fips' to 'verification-failed-noble-linux-azure-fips'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!