In the Linux kernel, the following vulnerability has been resolved:
idpf: fix read_dev_clk_lock spinlock init in idpf_ptp_init()
In idpf_ptp_init(), read_dev_clk_lock is initialized after ptp_schedule_worker() had already been called (and after idpf_ptp_settime64() could reach the lock). The PTP aux worker fires immediately upon scheduling and can call into idpf_ptp_read_src_clk_reg_direct(), which takes spin_lock(&ptp->read_dev_clk_lock) on an uninitialized lock, triggering the lockdep "non-static key" warning:
[12973.796587] idpf 0000:83:00.0: Device HW Reset initiated [12974.094507] INFO: trying to register non-static key. ... [12974.097208] Call Trace: [12974.097213] <TASK> [12974.097218] dump_stack_lvl+0x93/0xe0 [12974.097234] register_lock_class+0x4c4/0x4e0 [12974.097249] ? __lock_acquire+0x427/0x2290 [12974.097259] __lock_acquire+0x98/0x2290 [12974.097272] lock_acquire+0xc6/0x310 [12974.097281] ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf] [12974.097311] ? lockdep_hardirqs_on_prepare+0xde/0x190 [12974.097318] ? finish_task_switch.isra.0+0xd2/0x350 [12974.097330] ? __pfx_ptp_aux_kworker+0x10/0x10 [ptp] [12974.097343] _raw_spin_lock+0x30/0x40 [12974.097353] ? idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf] [12974.097373] idpf_ptp_read_src_clk_reg+0xb7/0x150 [idpf] [12974.097391] ? kthread_worker_fn+0x88/0x3d0 [12974.097404] ? kthread_worker_fn+0x4e/0x3d0 [12974.097411] idpf_ptp_update_cached_phctime+0x26/0x120 [idpf] [12974.097428] ? _raw_spin_unlock_irq+0x28/0x50 [12974.097436] idpf_ptp_do_aux_work+0x15/0x20 [idpf] [12974.097454] ptp_aux_kworker+0x20/0x40 [ptp] [12974.097464] kthread_worker_fn+0xd5/0x3d0 [12974.097474] ? __pfx_kthread_worker_fn+0x10/0x10 [12974.097482] kthread+0xf4/0x130 [12974.097489] ? __pfx_kthread+0x10/0x10 [12974.097498] ret_from_fork+0x32c/0x410 [12974.097512] ? __pfx_kthread+0x10/0x10 [12974.097519] ret_from_fork_asm+0x1a/0x30 [12974.097540] </TASK>
Move the call to spin_lock_init() up a bit to make sure read_dev_clk_lock is not touched before it's been initialized.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade kernel-64k-debug-develUpgrade kernel-rt-64k-coreUpgrade kernel-debug-modules-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-64k-debug-modulesUpgrade kernel-64k-debug-modules-coreUpgrade kernel-coreUpgrade kernel-rt-modules-coreUpgrade kernel-debug-develUpgrade kernel-rt-64k-debug-modulesUpgrade kernel-abi-stablelistsUpgrade kernel-rt-64k-develUpgrade kernel-rt-64k-modules-coreUpgrade kernel-toolsUpgrade rvUpgrade kernel-rt-debug-coreUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-develUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-64k-modules-coreUpgrade kernel-rt-modulesUpgrade kernel-rt-debug-modulesUpgrade kernel-zfcpdump-develUpgrade kernel-64k-develUpgrade kernel-docUpgrade kernel-uki-virtUpgrade kernel-rt-debug-modules-coreUpgrade kernel-headersUpgrade kernel-zfcpdump-modulesUpgrade kernel-64k-debug-devel-matchedUpgrade rtlaUpgrade kernel-64k-coreUpgrade kernel-rt-debug-modules-extraUpgrade kernel-rt-64k-debug-modules-coreUpgrade kernel-modules-coreUpgrade kernel-debug-coreUpgrade kernel-modules-extraUpgrade kernel-tools-libsUpgrade kernel-zfcpdumpUpgrade kernel-rt-debugUpgrade kernel-modulesUpgrade kernel-debug-modulesUpgrade kernel-64k-debugUpgrade kernel-debug-uki-virtUpgrade kernel-debugUpgrade kernel-rt-develUpgrade kernel-rtUpgrade kernel-rt-modules-extraUpgrade kernel-rt-coreUpgrade kernel-64k-debug-modules-extraUpgrade kernel-64k-debug-coreUpgrade kernel-rt-64k-modulesUpgrade kernel-rt-64k-modules-extraUpgrade kernel-zfcpdump-coreUpgrade libperfUpgrade kernel-tools-libs-develUpgrade kernel-64kUpgrade kernel-rt-64k-debug-develUpgrade kernel-64k-modulesUpgrade kernel-devel-matchedUpgrade kernel-rt-64k-debugUpgrade python3-perfUpgrade kernel-64k-devel-matchedUpgrade perfUpgrade kernel-rt-64k-debug-coreUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-rt-64kUpgrade kernel-debug-devel-matchedUpgrade kernelUpgrade kernel-rt-64k-debug-modules-extraUpgrade kernel-64k-modules-extraUpgrade kernel-cross-headersUpgrade kernel-devel | Oct 14, 2026 | Oct 7, 2026 |
| Redhat_linux | — | No solution existsUpgrade kernel-rtUpgrade kernel | Jul 22, 2026 | Jul 19, 2026 |
| Rocky_linux | — | Upgrade kernel-coreUpgrade kernel-rt-debugUpgrade kernel-rt-develUpgrade kernel-debugUpgrade kernel-debug-coreUpgrade kernel-rt-modules-coreUpgrade kernel-debuginfo-common-x86_64Upgrade kernel-modules-extraUpgrade perf-debuginfoUpgrade kernel-zfcpdump-devel-matchedUpgrade kernel-tools-debuginfoUpgrade kernel-debug-devel-matchedUpgrade kernel-rt-debug-modules-coreUpgrade kernel-uki-virt-addonsUpgrade kernel-debug-debuginfoUpgrade kernel-debuginfo-common-s390xUpgrade kernel-zfcpdump-coreUpgrade kernel-debug-modulesUpgrade kernel-rt-debug-debuginfoUpgrade kernel-tools-libsUpgrade kernel-rt-modulesUpgrade kernel-zfcpdump-develUpgrade python3-perf-debuginfoUpgrade kernel-zfcpdump-modules-coreUpgrade kernel-rtUpgrade kernel-zfcpdump-modulesUpgrade kernel-zfcpdump-modules-extraUpgrade kernel-zfcpdumpUpgrade kernel-rt-debug-develUpgrade kernel-debug-modules-coreUpgrade kernel-debug-modules-extraUpgrade kernel-rt-debug-modules-extraUpgrade rvUpgrade kernel-uki-virtUpgrade kernel-toolsUpgrade kernel-modulesUpgrade kernel-rt-debug-modulesUpgrade kernel-rt-debuginfoUpgrade kernel-rt-coreUpgrade kernel-debug-develUpgrade kernel-debuginfoUpgrade kernel-rt-modules-extraUpgrade kernel-modules-coreUpgrade kernel-tools-libs-develUpgrade kernel-develUpgrade perfUpgrade kernel-zfcpdump-debuginfoUpgrade python3-perfUpgrade kernel-rt-debug-coreUpgrade kernelUpgrade libperf-debuginfoUpgrade libperfUpgrade kernel-debug-uki-virtUpgrade rtlaUpgrade kernel-devel-matched | Oct 15, 2026 | Oct 9, 2026 |
| Ubuntu | — | Upgrade linux-image-nvidia-64k-hwe-26.04Upgrade linux-image-gcp-64kUpgrade linux-image-7.0.0-1008-oracleUpgrade linux-image-7.0.0-1011-oracle-64kUpgrade linux-image-azure-7.0Upgrade linux-image-nvidia-bos-64kUpgrade linux-image-7.0.0-1011-gcp-64kUpgrade linux-image-gcpUpgrade linux-image-nvidia-64kUpgrade linux-image-raspi-realtime-7.0Upgrade linux-image-azureUpgrade linux-image-7.0.0-1016-nvidiaUpgrade linux-image-aws-7.0Upgrade linux-image-7.0.0-1016-nvidia-64kUpgrade linux-image-nvidia-hwe-26.04Upgrade linux-image-7.0.0-1015-raspiUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-raspi-7.0Upgrade linux-image-7.0.0-1014-azureUpgrade linux-image-awsUpgrade linux-image-nvidia-bos-64k-7.0Upgrade linux-image-oracle-7.0Upgrade linux-image-raspi-realtimeUpgrade linux-image-7.0.0-1010-azureUpgrade linux-image-7.0.0-1008-oracle-64kUpgrade linux-image-nvidia-bos-7.0Upgrade linux-image-aws-64k-7.0Upgrade linux-image-nvidiaUpgrade linux-image-gcp-7.0Upgrade linux-image-7.0.0-1015-raspi-realtimeUpgrade linux-image-7.0.0-1010-ibmUpgrade linux-image-7.0.0-1009-awsUpgrade linux-image-7.0.0-1011-gcpUpgrade linux-image-ibmUpgrade linux-image-nvidia-64k-7.0Upgrade linux-image-7.0.0-2016-nvidia-bos-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-ibm-7.0Upgrade linux-image-azure-fdeUpgrade linux-image-7.0.0-2016-nvidia-bosUpgrade linux-image-aws-64kUpgrade linux-image-azure-fde-7.0Upgrade linux-image-7.0.0-1011-oracleUpgrade linux-image-7.0.0-1009-azure-fdeUpgrade linux-image-oracleUpgrade linux-image-7.0.0-1009-aws-64kUpgrade linux-image-oracle-64kUpgrade linux-image-raspiUpgrade linux-image-nvidia-7.0Upgrade linux-image-nvidia-bos | Jul 21, 2026 | Jul 20, 2026 |
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