On 09/05/2017 04:59 AM, Joakim Tjernlund wrote:
> 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);
>
Leo,
Can you take a look, or assign it to someone who is familiar with this code?
York
