DivestOS/Patches/Linux_CVEs/CVE-2016-8402/3.10/0002.patch

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From de51c6f363b8ba7c513e8a5bbae3459571966bfd Mon Sep 17 00:00:00 2001
From: Nick Desaulniers <ndesaulniers@google.com>
Date: Fri, 7 Oct 2016 11:13:55 -0700
Subject: [PATCH] binder: blacklist %p kptr_restrict
Bug: 31495231
Change-Id: Iebc150f6bc939b56e021424ee44fb30ce8d732fd
---
drivers/staging/android/binder.c | 36 ++++++++++++++++++------------------
1 file changed, 18 insertions(+), 18 deletions(-)
diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 8c9945d071476..7340ef74433a5 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -534,7 +534,7 @@ static void binder_insert_free_buffer(struct binder_proc *proc,
new_buffer_size = binder_buffer_size(proc, new_buffer);
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: add free buffer, size %zd, at %p\n",
+ "%d: add free buffer, size %zd, at %pK\n",
proc->pid, new_buffer_size, new_buffer);
while (*p) {
@@ -613,7 +613,7 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
struct mm_struct *mm;
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: %s pages %p-%p\n", proc->pid,
+ "%d: %s pages %pK-%pK\n", proc->pid,
allocate ? "allocate" : "free", start, end);
if (end <= start)
@@ -655,7 +655,7 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
BUG_ON(*page);
*page = alloc_page(GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO);
if (*page == NULL) {
- pr_err("%d: binder_alloc_buf failed for page at %p\n",
+ pr_err("%d: binder_alloc_buf failed for page at %pK\n",
proc->pid, page_addr);
goto err_alloc_page_failed;
}
@@ -664,7 +664,7 @@ static int binder_update_page_range(struct binder_proc *proc, int allocate,
page_array_ptr = page;
ret = map_vm_area(&tmp_area, PAGE_KERNEL, &page_array_ptr);
if (ret) {
- pr_err("%d: binder_alloc_buf failed to map page at %p in kernel\n",
+ pr_err("%d: binder_alloc_buf failed to map page at %pK in kernel\n",
proc->pid, page_addr);
goto err_map_kernel_failed;
}
@@ -774,7 +774,7 @@ static struct binder_buffer *binder_alloc_buf(struct binder_proc *proc,
}
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: binder_alloc_buf size %zd got buffer %p size %zd\n",
+ "%d: binder_alloc_buf size %zd got buffer %pK size %zd\n",
proc->pid, size, buffer, buffer_size);
has_page_addr =
@@ -803,7 +803,7 @@ static struct binder_buffer *binder_alloc_buf(struct binder_proc *proc,
binder_insert_free_buffer(proc, new_buffer);
}
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: binder_alloc_buf size %zd got %p\n",
+ "%d: binder_alloc_buf size %zd got %pK\n",
proc->pid, size, buffer);
buffer->data_size = data_size;
buffer->offsets_size = offsets_size;
@@ -843,7 +843,7 @@ static void binder_delete_free_buffer(struct binder_proc *proc,
if (buffer_end_page(prev) == buffer_end_page(buffer))
free_page_end = 0;
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: merge free, buffer %p share page with %p\n",
+ "%d: merge free, buffer %pK share page with %pK\n",
proc->pid, buffer, prev);
}
@@ -856,14 +856,14 @@ static void binder_delete_free_buffer(struct binder_proc *proc,
buffer_start_page(buffer))
free_page_start = 0;
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: merge free, buffer %p share page with %p\n",
+ "%d: merge free, buffer %pK share page with %pK\n",
proc->pid, buffer, prev);
}
}
list_del(&buffer->entry);
if (free_page_start || free_page_end) {
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: merge free, buffer %p do not share page%s%s with %p or %p\n",
+ "%d: merge free, buffer %pK do not share page%s%s with %pK or %pK\n",
proc->pid, buffer, free_page_start ? "" : " end",
free_page_end ? "" : " start", prev, next);
binder_update_page_range(proc, 0, free_page_start ?
@@ -884,7 +884,7 @@ static void binder_free_buf(struct binder_proc *proc,
ALIGN(buffer->offsets_size, sizeof(void *));
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%d: binder_free_buf %p size %zd buffer_size %zd\n",
+ "%d: binder_free_buf %pK size %zd buffer_size %zd\n",
proc->pid, buffer, size, buffer_size);
BUG_ON(buffer->free);
@@ -1311,7 +1311,7 @@ static void binder_transaction_buffer_release(struct binder_proc *proc,
int debug_id = buffer->debug_id;
binder_debug(BINDER_DEBUG_TRANSACTION,
- "%d buffer release %d, size %zd-%zd, failed at %p\n",
+ "%d buffer release %d, size %zd-%zd, failed at %pK\n",
proc->pid, buffer->debug_id,
buffer->data_size, buffer->offsets_size, failed_at);
@@ -2159,7 +2159,7 @@ static int binder_thread_write(struct binder_proc *proc,
}
}
binder_debug(BINDER_DEBUG_DEAD_BINDER,
- "%d:%d BC_DEAD_BINDER_DONE %016llx found %p\n",
+ "%d:%d BC_DEAD_BINDER_DONE %016llx found %pK\n",
proc->pid, thread->pid, (u64)cookie, death);
if (death == NULL) {
binder_user_error("%d:%d BC_DEAD_BINDER_DONE %016llx not found\n",
@@ -2907,7 +2907,7 @@ static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
#ifdef CONFIG_CPU_CACHE_VIPT
if (cache_is_vipt_aliasing()) {
while (CACHE_COLOUR((vma->vm_start ^ (uint32_t)proc->buffer))) {
- pr_info("binder_mmap: %d %lx-%lx maps %p bad alignment\n", proc->pid, vma->vm_start, vma->vm_end, proc->buffer);
+ pr_info("binder_mmap: %d %lx-%lx maps %pK bad alignment\n", proc->pid, vma->vm_start, vma->vm_end, proc->buffer);
vma->vm_start += PAGE_SIZE;
}
}
@@ -2943,7 +2943,7 @@ static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
proc->vma = vma;
proc->vma_vm_mm = vma->vm_mm;
- /*pr_info("binder_mmap: %d %lx-%lx maps %p\n",
+ /*pr_info("binder_mmap: %d %lx-%lx maps %pK\n",
proc->pid, vma->vm_start, vma->vm_end, proc->buffer);*/
return 0;
@@ -3165,7 +3165,7 @@ static void binder_deferred_release(struct binder_proc *proc)
page_addr = proc->buffer + i * PAGE_SIZE;
binder_debug(BINDER_DEBUG_BUFFER_ALLOC,
- "%s: %d: page %d at %p not freed\n",
+ "%s: %d: page %d at %pK not freed\n",
__func__, proc->pid, i, page_addr);
unmap_kernel_range((unsigned long)page_addr, PAGE_SIZE);
__free_page(proc->pages[i]);
@@ -3249,7 +3249,7 @@ static void print_binder_transaction(struct seq_file *m, const char *prefix,
struct binder_transaction *t)
{
seq_printf(m,
- "%s %d: %p from %d:%d to %d:%d code %x flags %x pri %ld r%d",
+ "%s %d: %pK from %d:%d to %d:%d code %x flags %x pri %ld r%d",
prefix, t->debug_id, t,
t->from ? t->from->proc->pid : 0,
t->from ? t->from->pid : 0,
@@ -3263,7 +3263,7 @@ static void print_binder_transaction(struct seq_file *m, const char *prefix,
if (t->buffer->target_node)
seq_printf(m, " node %d",
t->buffer->target_node->debug_id);
- seq_printf(m, " size %zd:%zd data %p\n",
+ seq_printf(m, " size %zd:%zd data %pK\n",
t->buffer->data_size, t->buffer->offsets_size,
t->buffer->data);
}
@@ -3271,7 +3271,7 @@ static void print_binder_transaction(struct seq_file *m, const char *prefix,
static void print_binder_buffer(struct seq_file *m, const char *prefix,
struct binder_buffer *buffer)
{
- seq_printf(m, "%s %d: %p size %zd:%zd %s\n",
+ seq_printf(m, "%s %d: %pK size %zd:%zd %s\n",
prefix, buffer->debug_id, buffer->data,
buffer->data_size, buffer->offsets_size,
buffer->transaction ? "active" : "delivered");