mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-07-01 17:11:41 +00:00
a53062ca0b
Adds ptrace_scope and timeout options to 17.1, tested working
Also adds hardened_malloc to 15.1, but failing to compile:
external/hardened_malloc/h_malloc.c:1688:18: error: use of undeclared identifier 'M_PURGE'
if (param == M_PURGE) {
^
external/hardened_malloc/h_malloc.c:1743:30: error: missing field 'ordblks' initializer [-Werror,-Wmissing-field-initializers]
struct mallinfo info = {0};
^
Signed-off-by: Tad <tad@spotco.us>
67 lines
2.2 KiB
Diff
67 lines
2.2 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Daniel Micay <danielmicay@gmail.com>
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Date: Thu, 28 May 2020 20:19:14 -0400
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Subject: [PATCH] workaround for audio service sorting bug
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---
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h_malloc.c | 15 ++++++++++++---
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1 file changed, 12 insertions(+), 3 deletions(-)
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diff --git a/h_malloc.c b/h_malloc.c
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index 8d15ab2..dbedbd4 100644
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--- a/h_malloc.c
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+++ b/h_malloc.c
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@@ -85,6 +85,7 @@ static union {
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bool zero_on_free;
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bool purge_slabs;
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bool region_quarantine_protect;
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+ bool slot_randomize;
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};
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char padding[PAGE_SIZE];
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} ro __attribute__((aligned(PAGE_SIZE)));
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@@ -355,7 +356,7 @@ static u64 get_mask(size_t slots) {
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}
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static size_t get_free_slot(struct random_state *rng, size_t slots, struct slab_metadata *metadata) {
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- if (SLOT_RANDOMIZE) {
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+ if (ro.slot_randomize) {
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// randomize start location for linear search (uniform random choice is too slow)
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unsigned random_index = get_random_u16_uniform(rng, slots);
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unsigned first_bitmap = random_index / 64;
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@@ -1061,17 +1062,24 @@ static inline void enforce_init(void) {
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}
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}
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-COLD static void handle_hal_bugs(void) {
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+COLD static void handle_bugs(void) {
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char path[256];
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if (readlink("/proc/self/exe", path, sizeof(path)) == -1) {
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return;
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}
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+
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const char camera_provider[] = "/vendor/bin/hw/android.hardware.camera.provider@2.4-service_64";
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if (strcmp(camera_provider, path) == 0) {
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ro.zero_on_free = false;
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ro.purge_slabs = false;
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ro.region_quarantine_protect = false;
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}
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+
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+ // DeviceDescriptor sorting wrongly relies on malloc addresses
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+ const char audio_service[] = "/system/bin/audioserver";
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+ if (strcmp(audio_service, path) == 0) {
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+ ro.slot_randomize = false;
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+ }
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}
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COLD static void init_slow_path(void) {
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@@ -1100,7 +1108,8 @@ COLD static void init_slow_path(void) {
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ro.purge_slabs = true;
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ro.zero_on_free = ZERO_ON_FREE;
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ro.region_quarantine_protect = true;
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- handle_hal_bugs();
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+ ro.slot_randomize = SLOT_RANDOMIZE;
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+ handle_bugs();
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if (sysconf(_SC_PAGESIZE) != PAGE_SIZE) {
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fatal_error("page size mismatch");
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