In the Linux kernel, the following vulnerability has been resolved: pagepool: avoid infinite loop to schedule delayed worker We noticed the kworker in pagepoolreleaseretry() was waken up repeatedly and infinitely in production because of the buggy driver causing the inflight less than 0 and warning us in pagepoolinflight()[1]. Since the inflight value goes negative, it means we should not expect the whole pagepool to get back to work normally. This patch mitigates the adverse effect by not rescheduling the kworker when detecting the inflight negative in pagepoolreleaseretry(). [1] [Mon Feb 10 20:36:11 2025] ------------[ cut here ]------------ [Mon Feb 10 20:36:11 2025] Negative(-51446) inflight packet-pages ... [Mon Feb 10 20:36:11 2025] Call Trace: [Mon Feb 10 20:36:11 2025] pagepoolreleaseretry+0x23/0x70 [Mon Feb 10 20:36:11 2025] processonework+0x1b1/0x370 [Mon Feb 10 20:36:11 2025] workerthread+0x37/0x3a0 [Mon Feb 10 20:36:11 2025] kthread+0x11a/0x140 [Mon Feb 10 20:36:11 2025] ? processonework+0x370/0x370 [Mon Feb 10 20:36:11 2025] ? _kthreadcancelwork+0x40/0x40 [Mon Feb 10 20:36:11 2025] retfromfork+0x35/0x40 [Mon Feb 10 20:36:11 2025] ---[ end trace ebffe800f33e7e34 ]--- Note: before this patch, the above calltrace would flood the dmesg due to repeated reschedule of releasedw kworker.
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-headers-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-image-unsigned-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-image-unsigned-6.14.0-1005-oem-dbgsym", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-ipu6-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-ipu7-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-iwlwifi-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-usbio-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-modules-vision-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-oem-6.14-headers-6.14.0-1005", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-oem-6.14-tools-6.14.0-1005", "binary_version": "6.14.0-1005.5" }, { "binary_name": "linux-tools-6.14.0-1005-oem", "binary_version": "6.14.0-1005.5" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "bpftool", "binary_version": "7.6.0+6.14.0-22.22" }, { "binary_name": "linux-bpf-dev", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-buildinfo-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-buildinfo-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-cloud-tools-6.14.0-22", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-cloud-tools-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-cloud-tools-common", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-doc", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-headers-6.14.0-22", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-headers-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-headers-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-6.14.0-22-generic-dbgsym", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic-64k-dbgsym", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-image-unsigned-6.14.0-22-generic-dbgsym", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-lib-rust-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-libc-dev", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-extra-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-ipu6-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-ipu7-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-iwlwifi-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-usbio-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-modules-vision-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-perf", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-source-6.14.0", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-6.14.0-22", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-6.14.0-22-generic", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-6.14.0-22-generic-64k", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-common", "binary_version": "6.14.0-22.22" }, { "binary_name": "linux-tools-host", "binary_version": "6.14.0-22.22" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-azure-cloud-tools-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-azure-headers-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-azure-tools-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-buildinfo-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-cloud-tools-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-headers-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-unsigned-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-unsigned-6.14.0-1007-azure-dbgsym", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-modules-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-modules-extra-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-tools-6.14.0-1007-azure", "binary_version": "6.14.0-1007.7" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-buildinfo-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-gcp-headers-6.14.0-1008", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-gcp-tools-6.14.0-1008", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-headers-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-headers-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp-64k-dbgsym", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-image-unsigned-6.14.0-1008-gcp-dbgsym", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-extra-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-modules-extra-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-tools-6.14.0-1008-gcp", "binary_version": "6.14.0-1008.8" }, { "binary_name": "linux-tools-6.14.0-1008-gcp-64k", "binary_version": "6.14.0-1008.8" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-headers-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-image-6.14.0-1007-raspi-dbgsym", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-modules-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-raspi-headers-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-raspi-tools-6.14.0-1007", "binary_version": "6.14.0-1007.7" }, { "binary_name": "linux-tools-6.14.0-1007-raspi", "binary_version": "6.14.0-1007.7" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-cloud-tools-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-headers-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-image-unsigned-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-image-unsigned-6.14.0-1004-realtime-dbgsym", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-modules-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-modules-extra-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-modules-iwlwifi-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-realtime-cloud-tools-6.14.0-1004", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-realtime-headers-6.14.0-1004", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-realtime-tools-6.14.0-1004", "binary_version": "6.14.0-1004.4" }, { "binary_name": "linux-tools-6.14.0-1004-realtime", "binary_version": "6.14.0-1004.4" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }
{ "binaries": [ { "binary_name": "linux-buildinfo-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-headers-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-image-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-image-6.14.0-22-generic-dbgsym", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-modules-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-riscv-headers-6.14.0-22", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-riscv-tools-6.14.0-22", "binary_version": "6.14.0-22.22.1" }, { "binary_name": "linux-tools-6.14.0-22-generic", "binary_version": "6.14.0-22.22.1" } ], "availability": "No subscription required", "ubuntu_priority": "medium" }