powerpc/eeh: Fix wrong argument passed to eeh_rmv_device()

When calling eeh_rmv_device() in eeh_reset_device() for partial hotplug
case, @rmv_data instead of its address is the proper argument.
Otherwise, the stack frame is corrupted when writing to
@rmv_data (actually its address) in eeh_rmv_device(). It results in
kernel crash as observed.

This fixes the issue by passing @rmv_data, not its address to
eeh_rmv_device() in eeh_reset_device().

Fixes: 67086e32b564 ("powerpc/eeh: powerpc/eeh: Support error recovery for VF PE")
Reported-by: Pridhiviraj Paidipeddi <ppaidipe@in.ibm.com>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/eeh_driver.c b/arch/powerpc/kernel/eeh_driver.c
index b5f73cb5eeb6e34b43fd75d5054f867128e792f7..d70101e1e25c1ac902996b2ba29bb8aa6f3f335e 100644 (file)
--- a/arch/powerpc/kernel/eeh_driver.c
+++ b/arch/powerpc/kernel/eeh_driver.c
@@ -647,7 +647,7 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
                        pci_unlock_rescan_remove();
                }
        } else if (frozen_bus) {
-               eeh_pe_dev_traverse(pe, eeh_rmv_device, &rmv_data);
+               eeh_pe_dev_traverse(pe, eeh_rmv_device, rmv_data);
        }
 
        /*