Le 28/03/2018 à 05:09, Balbir Singh a écrit :
New changes to %p cause the information printed at boot
about radix-mmu partition and process table opaque, if
we really want to protect those values, we should make
dmesg more secure using CONFIG_SECURITY_DMESG_RESTRICT

Before the patches:

radix-mmu: Partition table         (ptrval)
radix-mmu: Process table         (ptrval) and radix root for kernel:         
(ptrval)

After the patches

radix-mmu: Partition table c0000000ffff0000
radix-mmu: Process table c0000000fe000000 and radix root for kernel: 
c0000000015a0000

Signed-off-by: Balbir Singh <bsinghar...@gmail.com>


This patch was superseded by ec5b705c4836 ("powerpc/mm/radix: remove useless kernel messages")

---
  arch/powerpc/mm/pgtable-radix.c | 5 +++--
  1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c
index 2e10a964e290..3f676e89c3a6 100644
--- a/arch/powerpc/mm/pgtable-radix.c
+++ b/arch/powerpc/mm/pgtable-radix.c
@@ -329,7 +329,8 @@ static void __init radix_init_pgtable(void)
         * physical address here.
         */
        register_process_table(__pa(process_tb), 0, PRTB_SIZE_SHIFT - 12);
-       pr_info("Process table %p and radix root for kernel: %p\n", process_tb, 
init_mm.pgd);
+       pr_info("Process table %px and radix root for kernel: %px\n",
+                       process_tb, init_mm.pgd);
        asm volatile("ptesync" : : : "memory");
        asm volatile(PPC_TLBIE_5(%0,%1,2,1,1) : :
                     "r" (TLBIEL_INVAL_SET_LPID), "r" (0));
@@ -363,7 +364,7 @@ static void __init radix_init_partition_table(void)
        mmu_partition_table_set_entry(0, dw0, 0);
pr_info("Initializing Radix MMU\n");
-       pr_info("Partition table %p\n", partition_tb);
+       pr_info("Partition table %px\n", partition_tb);
  }
void __init radix_init_native(void)

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