diff options
| author | Hans Zhang <18255117159@163.com> | 2026-05-22 00:18:22 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2026-06-18 11:50:55 -0500 |
| commit | 4e4f9745f016c1631d00a4035b06f6e75d449e01 (patch) | |
| tree | 9a0f2d56846c69b40ed17853e767f57cbdd09864 | |
| parent | a29812a55da8d0dbeb071b26ac428c338e3fc389 (diff) | |
PCI: plda: Protect root bus removal with rescan lock
Hold the pci_rescan_remove_lock lock while stopping and removing a root bus
to avoid racing with concurrent rescan or hotplug operations triggered via
sysfs. Such races may lead to use-after-free issues or system crashes.
Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
[bhelgaas: commit log]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://patch.msgid.link/20260521161822.132996-10-18255117159@163.com
| -rw-r--r-- | drivers/pci/controller/plda/pcie-plda-host.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/controller/plda/pcie-plda-host.c b/drivers/pci/controller/plda/pcie-plda-host.c index 3c2f68383010..f9a34f323ad8 100644 --- a/drivers/pci/controller/plda/pcie-plda-host.c +++ b/drivers/pci/controller/plda/pcie-plda-host.c @@ -640,8 +640,10 @@ EXPORT_SYMBOL_GPL(plda_pcie_host_init); void plda_pcie_host_deinit(struct plda_pcie_rp *port) { + pci_lock_rescan_remove(); pci_stop_root_bus(port->bridge->bus); pci_remove_root_bus(port->bridge->bus); + pci_unlock_rescan_remove(); plda_pcie_irq_domain_deinit(port); |