kfence: fix printk format for ptrdiff_t

Use %td for ptrdiff_t.

Link: https://lkml.kernel.org/r/3abbe4c9-16ad-c168-a90f-087978ccd8f7@csgroup.eu
Link: https://lkml.kernel.org/r/20210303121157.3430807-1-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Reported-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Dmitriy Vyukov <dvyukov@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/kfence/report.c b/mm/kfence/report.c
index ab83d5a..519f037 100644 (file)
--- a/mm/kfence/report.c
+++ b/mm/kfence/report.c
@@ -116,12 +116,12 @@ void kfence_print_object(struct seq_file *seq, const struct kfence_metadata *met
        lockdep_assert_held(&meta->lock);
 
        if (meta->state == KFENCE_OBJECT_UNUSED) {
-               seq_con_printf(seq, "kfence-#%zd unused\n", meta - kfence_metadata);
+               seq_con_printf(seq, "kfence-#%td unused\n", meta - kfence_metadata);
                return;
        }
 
        seq_con_printf(seq,
-                      "kfence-#%zd [0x%p-0x%p"
+                      "kfence-#%td [0x%p-0x%p"
                       ", size=%d, cache=%s] allocated by task %d:\n",
                       meta - kfence_metadata, (void *)start, (void *)(start + size - 1), size,
                       (cache && cache->name) ? cache->name : "<destroyed>", meta->alloc_track.pid);
@@ -204,7 +204,7 @@ void kfence_report_error(unsigned long address, bool is_write, struct pt_regs *r
 
                pr_err("BUG: KFENCE: out-of-bounds %s in %pS\n\n", get_access_type(is_write),
                       (void *)stack_entries[skipnr]);
-               pr_err("Out-of-bounds %s at 0x%p (%luB %s of kfence-#%zd):\n",
+               pr_err("Out-of-bounds %s at 0x%p (%luB %s of kfence-#%td):\n",
                       get_access_type(is_write), (void *)address,
                       left_of_object ? meta->addr - address : address - meta->addr,
                       left_of_object ? "left" : "right", object_index);
@@ -213,14 +213,14 @@ void kfence_report_error(unsigned long address, bool is_write, struct pt_regs *r
        case KFENCE_ERROR_UAF:
                pr_err("BUG: KFENCE: use-after-free %s in %pS\n\n", get_access_type(is_write),
                       (void *)stack_entries[skipnr]);
-               pr_err("Use-after-free %s at 0x%p (in kfence-#%zd):\n",
+               pr_err("Use-after-free %s at 0x%p (in kfence-#%td):\n",
                       get_access_type(is_write), (void *)address, object_index);
                break;
        case KFENCE_ERROR_CORRUPTION:
                pr_err("BUG: KFENCE: memory corruption in %pS\n\n", (void *)stack_entries[skipnr]);
                pr_err("Corrupted memory at 0x%p ", (void *)address);
                print_diff_canary(address, 16, meta);
-               pr_cont(" (in kfence-#%zd):\n", object_index);
+               pr_cont(" (in kfence-#%td):\n", object_index);
                break;
        case KFENCE_ERROR_INVALID:
                pr_err("BUG: KFENCE: invalid %s in %pS\n\n", get_access_type(is_write),
@@ -230,7 +230,7 @@ void kfence_report_error(unsigned long address, bool is_write, struct pt_regs *r
                break;
        case KFENCE_ERROR_INVALID_FREE:
                pr_err("BUG: KFENCE: invalid free in %pS\n\n", (void *)stack_entries[skipnr]);
-               pr_err("Invalid free of 0x%p (in kfence-#%zd):\n", (void *)address,
+               pr_err("Invalid free of 0x%p (in kfence-#%td):\n", (void *)address,
                       object_index);
                break;
        }