Wind River Support Network

Description

In the Linux kernel, the following vulnerability has been resolved:EOL][EOL]PCI: pnv_php: Clean up allocated IRQs on unplug[EOL][EOL]When the root of a nested PCIe bridge configuration is unplugged, the[EOL]pnv_php driver leaked the allocated IRQ resources for the child bridges'[EOL]hotplug event notifications, resulting in a panic.[EOL][EOL]Fix this by walking all child buses and deallocating all its IRQ resources[EOL]before calling pci_hp_remove_devices().[EOL][EOL]Also modify the lifetime of the workqueue at struct pnv_php_slot::wq so[EOL]that it is only destroyed in pnv_php_free_slot(), instead of[EOL]pnv_php_disable_irq(). This is required since pnv_php_disable_irq() will[EOL]now be called by workers triggered by hot unplug interrupts, so the[EOL]workqueue needs to stay allocated.[EOL][EOL]The abridged kernel panic that occurs without this patch is as follows:[EOL][EOL]  WARNING: CPU: 0 PID: 687 at kernel/irq/msi.c:292 msi_device_data_release+0x6c/0x9c[EOL]  CPU: 0 UID: 0 PID: 687 Comm: bash Not tainted 6.14.0-rc5+ #2[EOL]  Call Trace:[EOL]   msi_device_data_release+0x34/0x9c (unreliable)[EOL]   release_nodes+0x64/0x13c[EOL]   devres_release_all+0xc0/0x140[EOL]   device_del+0x2d4/0x46c[EOL]   pci_destroy_dev+0x5c/0x194[EOL]   pci_hp_remove_devices+0x90/0x128[EOL]   pci_hp_remove_devices+0x44/0x128[EOL]   pnv_php_disable_slot+0x54/0xd4[EOL]   power_write_file+0xf8/0x18c[EOL]   pci_slot_attr_store+0x40/0x5c[EOL]   sysfs_kf_write+0x64/0x78[EOL]   kernfs_fop_write_iter+0x1b0/0x290[EOL]   vfs_write+0x3bc/0x50c[EOL]   ksys_write+0x84/0x140[EOL]   system_call_exception+0x124/0x230[EOL]   system_call_vectored_common+0x15c/0x2ec[EOL][EOL][bhelgaas: tidy comments]

CREATE(Triage):(User=pbi-cn) [CVE-2025-38624 (https://nvd.nist.gov/vuln/detail/CVE-2025-38624)