Re: [bisected][mainline]Kernel OOPs at msi_desc_to_pci_dev

Venkat Rao Bagalkote [off-list ref] writes:

quoted

IBM CI has reported a kernel crash while running module load and unload
testing on lpfc driver.

Thanks for the report.

I trust the below patch should fix the issue?

diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index 825f9432e03d..a82aaa786e9e 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c

@@ -443,8 +443,7 @@ static int pseries_msi_ops_prepare(struct irq_domain *domain, struct device *dev
   */
  static void pseries_msi_ops_teardown(struct irq_domain *domain, msi_alloc_info_t *arg)
  {
-	struct msi_desc *desc = arg->desc;
-	struct pci_dev *pdev = msi_desc_to_pci_dev(desc);
+	struct pci_dev *pdev = to_pci_dev(domain->dev);
  
  	rtas_disable_msi(pdev);
  }