[PATCH] fsl_pci: Correct fsl_pci_mcheck_exception
From: Joakim Tjernlund <hidden>
Date: 2017-09-05 12:05:10
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <redacted> --- 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