In the Linux kernel, the following vulnerability has been resolved:
mm: hugetlb: avoid soft lockup when mprotect to large memory area
When calling mprotect() to a large hugetlb memory area in our customer's workload (~300GB hugetlb memory), soft lockup was observed:
watchdog: BUG: soft lockup - CPU#98 stuck for 23s! [t2_new_sysv:126916]
CPU: 98 PID: 126916 Comm: t2_new_sysv Kdump: loaded Not tainted 6.17-rc7 Hardware name: GIGACOMPUTING R2A3-T40-AAV1/Jefferson CIO, BIOS 5.4.4.1 07/15/2025 pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : mte_clear_page_tags+0x14/0x24 lr : mte_sync_tags+0x1c0/0x240 sp : ffff80003150bb80 x29: ffff80003150bb80 x28: ffff00739e9705a8 x27: 0000ffd2d6a00000 x26: 0000ff8e4bc00000 x25: 00e80046cde00f45 x24: 0000000000022458 x23: 0000000000000000 x22: 0000000000000004 x21: 000000011b380000 x20: ffff000000000000 x19: 000000011b379f40 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : ffffc875e0aa5e2c x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : fffffc01ce7a5c00 x4 : 00000000046cde00 x3 : fffffc0000000000 x2 : 0000000000000004 x1 : 0000000000000040 x0 : ffff0046cde7c000
Call trace: mte_clear_page_tags+0x14/0x24 set_huge_pte_at+0x25c/0x280 hugetlb_change_protection+0x220/0x430 change_protection+0x5c/0x8c mprotect_fixup+0x10c/0x294 do_mprotect_pkey.constprop.0+0x2e0/0x3d4 __arm64_sys_mprotect+0x24/0x44 invoke_syscall+0x50/0x160 el0_svc_common+0x48/0x144 do_el0_svc+0x30/0xe0 el0_svc+0x30/0xf0 el0t_64_sync_handler+0xc4/0x148 el0t_64_sync+0x1a4/0x1a8
Soft lockup is not triggered with THP or base page because there is cond_resched() called for each PMD size.
Although the soft lockup was triggered by MTE, it should be not MTE specific. The other processing which takes long time in the loop may trigger soft lockup too.
So add cond_resched() for hugetlb to avoid soft lockup.
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade kernel-toolsUpgrade python-perfUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-develUpgrade perf-debuginfoUpgrade bpftoolUpgrade kernel-tools-develUpgrade kernelUpgrade kernel-tools-debuginfoUpgrade kernel-debuginfo-common-x86_64Upgrade python-perf-debuginfoUpgrade kernel-headersUpgrade kernel-livepatch-5.15.195-136.216Upgrade kernel-livepatch-5.10.247-246.989Upgrade kernel-debuginfoUpgrade bpftool-debuginfoUpgrade perf | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade kernel-modules-extra-commonUpgrade kernel-develUpgrade kernel-livepatch-6.1.156-177.286Upgrade kernel-toolsUpgrade kernel-libbpf-staticUpgrade kernel-livepatch-6.12.53-69.119Upgrade kernel6.12-debuginfoUpgrade kernel6.12-libbpfUpgrade python3-perfUpgrade kernel6.12-libbpf-develUpgrade python3-perf6.12-debuginfoUpgrade kernelUpgrade kernel6.12-libbpf-staticUpgrade kernel-libbpf-develUpgrade kernel6.12-toolsUpgrade python3-perf-debuginfoUpgrade kernel6.12-headersUpgrade kernel6.12-tools-debuginfoUpgrade perf6.12Upgrade bpftoolUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-tools-develUpgrade kernel6.12-develUpgrade kernel6.12-modules-extraUpgrade perfUpgrade kernel6.12-debuginfo-common-aarch64Upgrade kernel-tools-debuginfoUpgrade perf-debuginfoUpgrade kernel-debuginfo-common-aarch64Upgrade kernel-debuginfoUpgrade python3-perf6.12Upgrade bpftool6.12Upgrade kernel6.12Upgrade kernel-headersUpgrade kernel6.12-modules-extra-commonUpgrade bpftool6.12-debuginfoUpgrade kernel6.12-libbpf-debuginfoUpgrade kernel6.12-debuginfo-common-x86_64Upgrade kernel6.12-tools-develUpgrade perf6.12-debuginfoUpgrade kernel-modules-extraUpgrade kernel-libbpf-debuginfoUpgrade kernel-libbpfUpgrade bpftool-debuginfo | Dec 9, 2025 | Nov 12, 2025 |
| Debian | — | Upgrade linuxUpgrade linux-6.1 | Nov 13, 2025 | Nov 13, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade kernelUpgrade kernel-tools-libsUpgrade python3-perfUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-abi-stablelists | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp12 | — | Upgrade python3-perfUpgrade kernel-abi-stablelistsUpgrade kernelUpgrade bpftoolUpgrade kernel-toolsUpgrade kernel-tools-libs | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade kernelUpgrade python3-perfUpgrade bpftoolUpgrade kernel-tools-libsUpgrade kernel-abi-stablelistsUpgrade kernel-tools | Feb 3, 2026 | Feb 2, 2026 |
| Oracle_linux | — | Upgrade kernel-uek | Dec 15, 2025 | Nov 12, 2025 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Nov 12, 2025 |
| Ubuntu | — | Upgrade linux-image-6.8.0-1049-nvidia-64kUpgrade linux-image-6.8.0-1049-ibmUpgrade linux-image-6.8.0-1051-azureUpgrade linux-image-aws-fipsUpgrade linux-image-gcp-lts-22.04Upgrade linux-image-nvidia-64k-6.8Upgrade linux-image-nvidia-lowlatencyUpgrade linux-image-oem-20.04bUpgrade linux-image-lowlatency-64kUpgrade linux-image-lowlatency-64k-5.15Upgrade linux-image-nvidia-tegra-rtUpgrade linux-image-lowlatency-6.8Upgrade linux-image-ibm-5.15Upgrade linux-image-raspi-realtime-6.8Upgrade linux-image-azure-6.17Upgrade linux-image-oracleUpgrade linux-image-5.15.0-170-generic-lpaeUpgrade linux-image-oracle-64k-6.17Upgrade linux-image-5.15.0-1109-azureUpgrade linux-image-oracle-6.17Upgrade linux-image-5.15.0-1100-gcp-fipsUpgrade linux-image-nvidia-64k-hwe-22.04Upgrade linux-image-oem-22.04aUpgrade linux-image-6.17.0-1008-raspiUpgrade linux-image-gcp-fipsUpgrade linux-image-lowlatency-64k-6.8Upgrade linux-image-6.8.0-1048-gkeUpgrade linux-image-generic-lpae-5.15Upgrade linux-image-5.15.0-170-lowlatencyUpgrade linux-image-gcp-5.15Upgrade linux-image-6.17.0-1011-oemUpgrade linux-image-6.8.0-1047-oracle-64kUpgrade linux-image-intel-iotg-5.15Upgrade linux-image-lowlatencyUpgrade linux-image-oracle-lts-24.04Upgrade linux-image-oracle-64k-6.8Upgrade linux-image-6.8.0-1029-xilinxUpgrade linux-image-lowlatency-hwe-22.04Upgrade linux-image-5.15.0-170-fipsUpgrade linux-image-gcp-64k-6.17Upgrade linux-image-aws-64k-lts-24.04Upgrade linux-image-gke-64kUpgrade linux-image-nvidia-tegra-igx-rt-5.15Upgrade linux-image-nvidia-6.8Upgrade linux-image-6.17.0-1007-aws-64kUpgrade linux-image-6.17.0-1007-gcpUpgrade linux-image-6.17.0-14-genericUpgrade linux-image-gcp-6.8Upgrade linux-image-gcp-64k-6.8Upgrade linux-image-gcp-fips-5.15Upgrade linux-image-generic-64k-6.17Upgrade linux-image-raspi-nolpaeUpgrade linux-image-5.15.0-1092-intel-iot-realtimeUpgrade linux-image-azure-fips-5.15Upgrade linux-image-aws-fips-5.15Upgrade linux-image-azure-cvmUpgrade linux-image-aws-64k-6.17Upgrade linux-image-5.15.0-1041-nvidia-tegra-igxUpgrade linux-image-6.8.0-1050-raspiUpgrade linux-image-ibmUpgrade linux-image-nvidia-lowlatency-64kUpgrade linux-image-nvidia-tegra-igxUpgrade linux-image-lowlatency-5.15Upgrade linux-image-xilinx-zynqmp-5.15Upgrade linux-image-generic-64k-5.15Upgrade linux-image-generic-64k-hwe-20.04Upgrade linux-image-gke-5.15Upgrade linux-image-6.17.0-14-generic-64kUpgrade linux-image-realtimeUpgrade linux-image-nvidia-tegra-5.15Upgrade linux-image-nvidia-lowlatency-6.8Upgrade linux-image-oem-22.04Upgrade linux-image-generic-64k-6.8Upgrade linux-image-nvidia-hwe-22.04Upgrade linux-image-5.15.0-170-generic-64kUpgrade linux-image-6.8.0-1050-aws-64kUpgrade linux-image-fipsUpgrade linux-image-gcp-64k-lts-24.04Upgrade linux-image-6.8.0-1052-gcp-fipsUpgrade linux-image-generic-5.15Upgrade linux-image-oracle-64k-lts-24.04Upgrade linux-image-awsUpgrade linux-image-virtual-6.8Upgrade linux-image-lowlatency-hwe-20.04Upgrade linux-image-aws-64k-5.15Upgrade linux-image-gkeop-6.8Upgrade linux-image-6.8.0-1049-nvidiaUpgrade linux-image-6.17.0-1007-awsUpgrade linux-image-6.8.1-1045-realtimeUpgrade linux-image-generic-lpaeUpgrade linux-image-aws-5.15Upgrade linux-image-generic-6.17Upgrade linux-image-nvidia-lowlatency-5.15Upgrade linux-image-6.17.0-1007-gcp-64kUpgrade linux-image-nvidiaUpgrade linux-image-6.17.0-1008-azureUpgrade linux-image-6.8.0-106-lowlatencyUpgrade linux-image-lowlatency-64k-hwe-20.04Upgrade linux-image-5.15.0-1092-kvmUpgrade linux-image-5.15.0-1052-nvidia-tegraUpgrade linux-image-xilinx-zynqmpUpgrade linux-image-6.8.0-1052-gcpUpgrade linux-image-genericUpgrade linux-image-6.8.0-1035-gkeopUpgrade linux-image-5.15.0-1094-ibmUpgrade linux-image-nvidia-64kUpgrade linux-image-generic-6.8Upgrade linux-image-5.15.0-1083-gkeopUpgrade linux-image-5.15.0-1100-aws-fipsUpgrade linux-image-kvm-5.15Upgrade linux-image-gkeop-5.15Upgrade linux-image-generic-lpae-hwe-20.04Upgrade linux-image-kvmUpgrade linux-image-6.8.0-1050-awsUpgrade linux-image-gcpUpgrade linux-image-5.15.0-1100-gcpUpgrade linux-image-nvidia-tegraUpgrade linux-image-gkeopUpgrade linux-image-gke-64k-6.8Upgrade linux-image-6.8.0-106-generic-64kUpgrade linux-image-oem-22.04bUpgrade linux-image-5.15.0-1110-azureUpgrade linux-image-5.15.0-1100-aws-64kUpgrade linux-image-5.15.0-1064-xilinx-zynqmpUpgrade linux-image-oem-6.17Upgrade linux-image-azure-5.15Upgrade linux-image-5.15.0-170-genericUpgrade linux-image-raspi-6.8Upgrade linux-image-oracle-lts-22.04Upgrade linux-image-azure-fips-6.8Upgrade linux-image-realtime-6.17Upgrade linux-image-aws-6.8Upgrade linux-image-azure-6.8Upgrade linux-image-6.17.0-1007-oracle-64kUpgrade linux-image-oem-20.04cUpgrade linux-image-nvidia-tegra-igx-rtUpgrade linux-image-intel-iot-realtime-5.15Upgrade linux-image-ibm-classicUpgrade linux-image-gcp-lts-24.04Upgrade linux-image-aws-lts-22.04Upgrade linux-image-aws-64kUpgrade linux-image-5.15.0-1097-oracleUpgrade linux-image-5.15.0-1041-nvidia-tegra-igx-rtUpgrade linux-image-azureUpgrade linux-image-6.8.0-106-lowlatency-64kUpgrade linux-image-6.8.0-1047-oracleUpgrade linux-image-5.15.0-1096-gkeUpgrade linux-image-5.15.0-1095-nvidia-lowlatencyUpgrade linux-image-oem-20.04dUpgrade linux-image-nvidia-tegra-rt-5.15Upgrade linux-image-nvidia-tegra-igx-5.15Upgrade linux-image-intelUpgrade linux-image-6.17.0-1006-realtimeUpgrade linux-image-5.15.0-1052-nvidia-tegra-rtUpgrade linux-image-virtual-hwe-20.04Upgrade linux-image-virtual-5.15Upgrade linux-image-raspi-realtimeUpgrade linux-image-oem-20.04Upgrade linux-image-ibm-lts-24.04Upgrade linux-image-6.17.0-1007-oracleUpgrade linux-image-5.15.0-1100-awsUpgrade linux-image-xilinxUpgrade linux-image-oracle-6.8Upgrade linux-image-6.8.0-106-genericUpgrade linux-image-6.8.0-1049-nvidia-lowlatency-64kUpgrade linux-image-aws-6.17Upgrade linux-image-6.8.0-2040-raspi-realtimeUpgrade linux-image-5.15.0-1095-intel-iotgUpgrade linux-image-virtual-6.17Upgrade linux-image-virtualUpgrade linux-image-azure-lts-24.04Upgrade linux-image-6.8.0-1050-aws-fipsUpgrade linux-image-6.8.0-1048-gke-64kUpgrade linux-image-fips-5.15Upgrade linux-image-lowlatency-64k-hwe-22.04Upgrade linux-image-gcp-fips-6.8Upgrade linux-image-raspi-5.15Upgrade linux-image-gkeUpgrade linux-image-generic-hwe-20.04Upgrade linux-image-gke-6.8Upgrade linux-image-6.8.0-106-fipsUpgrade linux-image-aws-fips-6.8Upgrade linux-image-gcp-6.17Upgrade linux-image-oracle-64kUpgrade linux-image-azure-fipsUpgrade linux-image-aws-64k-lts-22.04Upgrade linux-image-aws-64k-6.8Upgrade linux-image-6.8.0-1052-gcp-64kUpgrade linux-image-5.15.0-170-lowlatency-64kUpgrade linux-image-6.8.0-1052-azure-fipsUpgrade linux-image-intel-iotgUpgrade linux-image-intel-iot-realtimeUpgrade linux-image-5.15.0-1095-nvidiaUpgrade linux-image-oem-22.04dUpgrade linux-image-raspiUpgrade linux-image-nvidia-lowlatency-64k-6.8Upgrade linux-image-nvidia-5.15Upgrade linux-image-ibm-6.8Upgrade linux-image-generic-hwe-22.04Upgrade linux-image-generic-64kUpgrade linux-image-azure-lts-22.04Upgrade linux-image-aws-lts-24.04Upgrade linux-image-xilinx-6.8Upgrade linux-image-virtual-hwe-22.04Upgrade linux-image-realtime-hwe-22.04Upgrade linux-image-realtime-6.8.1Upgrade linux-image-realtime-5.15Upgrade linux-image-raspi-6.17Upgrade linux-image-5.15.0-1097-raspiUpgrade linux-image-generic-64k-hwe-22.04Upgrade linux-image-gcp-64kUpgrade linux-image-fips-6.8Upgrade linux-image-6.8.0-1049-nvidia-lowlatencyUpgrade linux-image-5.15.0-1109-azure-fipsUpgrade linux-image-5.15.0-1099-realtimeUpgrade linux-image-oracle-5.15Upgrade linux-image-oem-22.04c | Feb 13, 2026 | Feb 12, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Nov 12, 2025 |
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