get_user() had it args reversed causing NIP to be NULL:ed instead of fixing up the PCI access.
Note: This still hangs my P1020 Freescale CPU hard, but at least I get a NIP now. Signed-off-by: Joakim Tjernlund <joakim.tjernl...@infinera.com> --- arch/powerpc/sysdev/fsl_pci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c index 7c8b779c329a..9e64c12dff6a 100644 --- a/arch/powerpc/sysdev/fsl_pci.c +++ b/arch/powerpc/sysdev/fsl_pci.c @@ -996,7 +996,7 @@ int fsl_pci_mcheck_exception(struct pt_regs *regs) if (is_in_pci_mem_space(addr)) { if (user_mode(regs)) { pagefault_disable(); - ret = get_user(regs->nip, &inst); + ret = get_user(inst, (__u32 __user *)regs->nip); pagefault_enable(); } else { ret = probe_kernel_address(regs->nip, inst); -- 2.13.5